CN112982017A - Coating, modified paper, and preparation method and application thereof - Google Patents

Coating, modified paper, and preparation method and application thereof Download PDF

Info

Publication number
CN112982017A
CN112982017A CN202110272413.5A CN202110272413A CN112982017A CN 112982017 A CN112982017 A CN 112982017A CN 202110272413 A CN202110272413 A CN 202110272413A CN 112982017 A CN112982017 A CN 112982017A
Authority
CN
China
Prior art keywords
coating
parts
paper
oxidized starch
mixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110272413.5A
Other languages
Chinese (zh)
Inventor
林楠凯
潘海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202110272413.5A priority Critical patent/CN112982017A/en
Publication of CN112982017A publication Critical patent/CN112982017A/en
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/52—Cellulose; Derivatives thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/46—Non-macromolecular organic compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/54—Starch
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering

Landscapes

  • Paper (AREA)

Abstract

The invention provides a coating, modified paper, and a preparation method and application thereof. The coating comprises the following raw material components in parts by weight: 0.1-2 parts of cellulose, 0.3-0.6 part of dihydric alcohol, 0.3-1 part of polyalcohol and 10-30 parts of oxidized starch. The preparation method of the coating comprises the following steps: (1) mixing cellulose, dihydric alcohol, polyalcohol, water and optional pH regulator to obtain a mixed solution; (2) and (2) mixing the mixed solution obtained in the step (1) with oxidized starch to obtain the coating. And (3) coating the coating on any surface of paper and then drying to obtain the modified paper. The modified paper provided by the invention has good aging resistance and good silicon oil bearing capacity, is degradable, pollution-free and environment-friendly, meets the use requirement of 'no plastic', and is suitable for being used as an environment-friendly packaging material.

Description

Coating, modified paper, and preparation method and application thereof
Technical Field
The invention belongs to the technical field of environment-friendly packaging materials, and particularly relates to a coating, modified paper, and a preparation method and application thereof.
Background
With the development of social economy and the improvement of living standard of people, environmental pollution is more and more serious, wherein white pollution is more serious. White pollution is an image name of people for the phenomenon that plastic garbage (multi-finger plastic bags) which is difficult to degrade pollutes the environment, and is the phenomenon that various domestic plastic products made of high molecular compounds such as polystyrene, polypropylene, polyvinyl chloride and the like are discarded into solid waste after being used, and the environment is always seriously polluted because the domestic plastic products are randomly thrown and are difficult to degrade. Because the use of plastic products has the problems of difficult degradation and serious environmental pollution, and the paper is the most ideal scheme at present to replace part of the plastic products (such as plastic films), the film coated paper is produced by transportation.
The laminated paper is also called as impervious paper, and is a composite material prepared by coating plastic particles on the surface of paper through a casting machine by high-temperature melting, and then performing processes such as pressing, cooling, rolling and the like. For example, CN103469678A discloses a preparation method of recyclable laminating paper. The preparation method comprises the following steps: (1) uniformly mixing polyvinyl alcohol powder, a compound plasticizer and an auxiliary additive by using a high-speed mixer to form a mixed laminating material; (2) and (3) coating the prepared coating material on the surface of the base material to form the coated paper. The PVA layer in the laminating paper provided by the technical scheme can be removed through water washing, so that the aim of recycling the paper is fulfilled.
CN108634745A discloses a disposable laminated paper straw. The disposable film-coated paper straw is characterized in that a sheet is rolled into a tubular shape, the sheet is a film-coated paper tape made of film-coated paper, the film-coated paper comprises a paper base layer and a film coating layer, and the film coating layer is at least positioned on the outer side of the paper base layer in the straw; the straw is provided with an interface edge, and the interface edge is formed by joining the overlapped parts of two side edges of the laminating paper tape along the longitudinal direction. In the technical scheme, the PE film layer is made of biodegradable PE film resin, and the biodegradable PE film resin is petroleum-based PE film resin or bio-based PE film resin. The petroleum-based laminating resin is PE/PP containing photo-oxygen biodegradable additive; the bio-based laminating resin comprises PLA, PHA, PBS and the like.
CN105295408A discloses a preparation process of environment-friendly laminating paper. The preparation process comprises the following steps: (1) preparing raw materials: crushing and granulating sugarcane and straw in a crusher, and mixing the crushed and granulated sugarcane and straw with a certain amount of polyethylene and degradable plasticizing resin, wherein the mass fractions of the sugarcane, the straw, the polyethylene and the degradable plasticizing resin are 70-75%, 15-20%, 8-9% and 1-2% respectively; (2) and (3) extrusion molding: mixing the raw materials prepared in the step (1) with auxiliary materials prepared in advance to prepare a laminating material, and carrying out a melting reaction in a double-screw extruder to prepare the laminating paper, wherein the double-screw extruder comprises a feeding area, a screw extrusion area, a filtering area and a die head area, the temperature of the feeding area is 90-100 ℃, the temperature of the screw extrusion area is 260-380 ℃, and the temperature of the die head area is 240-360 ℃.
In conclusion, in the prior art, when the coated paper is prepared, the polymer resin is still required to be used for preparing the coated material, so that the prepared coated paper can not meet the use requirement of 'no plastic' although the coated paper meets the requirement of 'plastic reduction', and the polymer resin in the coated paper is difficult to degrade and can still cause environmental pollution. Therefore, how to provide an environment-friendly modified paper meeting the requirement of "no plastic" to replace part of plastic products has become a technical problem to be solved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a coating, modified paper, and a preparation method and application thereof. According to the invention, through the design of the components of the coating, and further through the matching use of the dihydric alcohol and the polyhydric alcohol, the prepared coating has excellent environmental protection and degradability, and the modified paper prepared by the method has good aging resistance, is degradable, pollution-free and environment-friendly, and meets the use requirement of 'no plastic'.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
in a first aspect, the invention provides a coating, which comprises the following components in parts by weight: 0.1-2 parts of cellulose, 0.3-0.6 part of dihydric alcohol, 0.3-1 part of polyalcohol and 10-30 parts of oxidized starch.
According to the invention, through the design of the components of the coating, and further through the matching use of the dihydric alcohol and the polyhydric alcohol, the prepared coating has excellent environmental protection and degradability, and the coating prepared in the invention does not need to add a polymer resin component, so that the prepared modified paper has better aging resistance, is degradable, pollution-free and environment-friendly, and meets the use requirement of 'no plastic'.
In the invention, by controlling the weight part of the oxidized starch within a specific range, the prepared coating has better silicon oil bearing capacity and better aging resistance. If the weight part of the oxidized starch in the coating is too small or too large, the prepared modified paper has poor bearing capacity and ageing resistance to the silicone oil, and does not meet the use requirements.
In the present invention, the cellulose may be present in an amount of 0.1 part, 0.2 part, 0.4 part, 0.6 part, 0.8 part, 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, or the like by weight.
The weight portion of the dihydric alcohol may be 0.3 parts, 0.33 parts, 0.36 parts, 0.39 parts, 0.42 parts, 0.45 parts, 0.48 parts, 0.51 parts, 0.54 parts, 0.57 parts, 0.6 parts, or the like.
The weight portion of the polyol may be 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part, or the like.
The parts by weight of the oxidized starch may be 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, or the like.
The following is a preferred technical solution of the present invention, but not a limitation to the technical solution provided by the present invention, and the object and advantageous effects of the present invention can be better achieved and achieved by the following preferred technical solution.
In a preferred embodiment of the present invention, the cellulose is selected from any one or a combination of at least two of sodium carboxymethyl cellulose, calcium carboxymethyl cellulose, and hydroxypropyl methyl cellulose.
Preferably, the dihydric alcohol is selected from any one of ethylene glycol, diethylene glycol ether, propylene glycol, butylene glycol, isobutylene glycol or pentanediol or a combination of at least two thereof.
Preferably, the polyol is a triol.
Preferably, the triol is selected from glycerol and/or 1,1, 1-trimethylolpropane.
The mass ratio of the diol to the polyol is preferably 1 (1-2), and may be, for example, 1:1, 1:1.1, 1:1.2, 1:1.3, 1:1.4, 1:1.5, 1:1.6, 1:1.7, 1:1.8, 1:1.9, or 1: 2.
In the invention, the dihydric alcohol and the polyhydric alcohol have a synergistic effect, and the mass ratio of the dihydric alcohol to the polyhydric alcohol is further controlled within a specific proportion range by using the dihydric alcohol and the polyhydric alcohol in a matching way, so that the prepared paint has better aging resistance and better silicon oil bearing capacity. If the mass ratio of the dihydric alcohol to the polyhydric alcohol is too large or too small, the ageing resistance of the coating is poor, the ageing resistance of the modified paper prepared by the method is poor, and the silicon oil bearing capacity is poor, so that the modified paper does not meet the use requirement.
Preferably, the oxidized starch is selected from any one of or a combination of at least two of tapioca oxidized starch, corn oxidized starch or wheat oxidized starch.
In a preferred embodiment of the present invention, the coating material further comprises 0.4 to 1 part of a pH adjuster, for example, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, or 1 part.
Preferably, the pH adjuster is selected from any one of sodium hydroxide, citric acid, potassium hydroxide, or acetic acid or a combination of at least two thereof, and further preferably a combination of sodium hydroxide and citric acid.
Preferably, the coating also comprises 67-88 parts of water, such as 67 parts, 68 parts, 70 parts, 72 parts, 74 parts, 76 parts, 78 parts, 80 parts, 82 parts, 84 parts, 86 parts or 88 parts.
In a preferred embodiment of the present invention, the viscosity of the coating material is 80 to 200cps, and may be, for example, 80cps, 90cps, 100cps, 110cps, 120cps, 130cps, 140cps, 150cps, 160cps, 170cps, 180cps, 190cps, or 200 cps.
Preferably, the solid content of the coating is 18-36%, for example, 18%, 20%, 22%, 24%, 26%, 28%, 30%, 32%, 34%, 36%, etc.
In a second aspect, the present invention provides a method for preparing the coating material according to the first aspect, comprising the steps of:
(1) mixing cellulose, dihydric alcohol, polyalcohol, water and optional pH regulator to obtain a mixed solution;
(2) and (2) mixing the mixed solution obtained in the step (1) with oxidized starch to obtain the coating.
In a preferred embodiment of the present invention, the temperature of the mixing in the step (1) is 15 to 25 ℃, and may be, for example, 15 ℃, 16 ℃, 17 ℃, 18 ℃, 19 ℃, 20 ℃, 21 ℃, 22 ℃, 23 ℃, 24 ℃ or 25 ℃.
Preferably, the pH of the mixed solution in the step (1) is 7 to 8, and may be, for example, 7, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, or 8.
Preferably, the solid content of the mixed solution obtained in step (1) is 3 to 5%, and may be, for example, 3%, 3.2%, 3.4%, 3.6%, 3.8%, 4%, 4.2%, 4.4%, 4.6%, 4.8%, or 5%.
Preferably, the step (1) further comprises a pretreatment step before the mixing.
Preferably, the pretreatment method comprises the following steps: cellulose, glycol, polyol and water are mixed.
Preferably, the temperature of the pre-treatment of the mixture is 60 to 80 ℃, for example, 60 ℃, 62 ℃, 64 ℃, 66 ℃, 68 ℃, 70 ℃, 72 ℃, 74 ℃, 76 ℃, 78 ℃ or 80 ℃.
Preferably, the method of pre-treating the mixing is stirring.
Preferably, the rotation speed of the stirring is 100-500 rpm, for example, 100rpm, 120rpm, 150rpm, 180rpm, 200rpm, 230rpm, 250rpm, 270rpm, 300rpm, 330rpm, 360rpm, 400rpm, 420rpm, 460rpm, 500rpm, or the like.
As a preferred technical scheme of the invention, the preparation method specifically comprises the following steps:
(1) uniformly mixing cellulose, dihydric alcohol, polyhydric alcohol and water at the temperature of 60-80 ℃ and the rotating speed of 100-500 rpm, cooling to 15-25 ℃, adding a pH regulator into the mixture, and uniformly mixing to obtain a mixed solution with the pH of 7-8;
(2) and (2) uniformly mixing the mixed solution obtained in the step (1) with oxidized starch to obtain the coating.
In a third aspect, the present invention provides a modified paper, which is prepared by the following method:
coating a coating on any surface of the paper and then drying to obtain the modified paper;
the coating comprises a coating as described in the first aspect.
In a preferred embodiment of the present invention, the coating weight of the coating is 0.5 to 3g/m2For example, it may be 0.5g/m2、0.8g/m2、1g/m2、1.2g/m2、1.5g/m2、1.8g/m2、2g/m2、2.3g/m2、2.5g/m2、2.7g/m2Or 3g/m2。
Preferably, the drying temperature is 80-120 ℃, for example, 80 ℃, 84 ℃, 88 ℃, 92 ℃, 96 ℃, 100 ℃, 104 ℃, 108 ℃, 112 ℃, 116 ℃ or 120 ℃.
In a fourth aspect, the present invention provides a use of the modified paper according to the third aspect in a packaging material.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, through the design of the components of the coating and the synergistic interaction of the dihydric alcohol and the polyhydric alcohol, the mass ratio of the dihydric alcohol to the polyhydric alcohol is further controlled within a specific proportion range, and the content of oxidized starch is controlled within a specific range, so that the prepared coating has excellent environmental-friendly and degradable performances, the viscosity of the coating is 80-200 cps, and the coating is easy to coat; the modified paper further prepared has good aging resistance and silicone oil bearing capacity, the aging resistance is (80 +/-2-85 +/-1.2)%, and the modified paper has excellent silicone oil bearing capacity, and meanwhile, the modified paper provided by the invention is degradable, pollution-free and environment-friendly, meets the use requirement of 'plastic-free' and is suitable for being used as an environment-friendly packaging material.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The invention provides a coating and modified paper, wherein the coating comprises the following components in parts by weight: 1 part of sodium carboxymethylcellulose, 0.4 part of ethylene glycol, 0.6 part of glycerol, 0.1 part of sodium hydroxide, 0.3 part of citric acid, 20 parts of corn oxidized starch and 77.2 parts of water.
The preparation method of the coating comprises the following steps:
(1) uniformly mixing sodium carboxymethylcellulose, ethylene glycol, glycerol and water at the rotation speed of 300rpm at 65 ℃, cooling to 20 ℃, adding sodium hydroxide and citric acid, and uniformly mixing to obtain a mixed solution with the pH of 7.5;
(2) and (2) uniformly mixing the mixed solution obtained in the step (1) with the corn oxidized starch to obtain the coating.
The modified paper is prepared by adopting the following method:
coating the coating on any surface of paper, and drying at 100 ℃ to obtain the modified paper; the coating dry weight of the coating is 1.5g/m2。
Example 2
The invention provides a coating and modified paper, wherein the coating comprises the following components in parts by weight: 0.1 part of calcium carboxymethyl cellulose, 0.3 part of diethylene glycol ether, 0.3 part of 1,1, 1-trimethylolpropane, 0.3 part of potassium hydroxide, 0.7 part of acetic acid, 27 parts of wheat oxidized starch and 71.3 parts of water.
The preparation method of the coating comprises the following steps:
(1) uniformly mixing carboxymethylcellulose calcium, diethylene glycol ether, 1,1, 1-trimethylolpropane and water at the rotation speed of 100rpm at the temperature of 60 ℃, cooling to 15 ℃, adding potassium hydroxide and acetic acid, and uniformly mixing to obtain a mixed solution with the pH of 8;
(2) and (2) uniformly mixing the mixed solution obtained in the step (1) with wheat oxidized starch to obtain the coating.
The modified paper is prepared by adopting the following method:
coating the coating on any surface of paper, and drying at 80 ℃ to obtain the modified paper; the coating has a dry coating weight of 2g/m2。
Example 3
The invention provides a coating and modified paper, wherein the coating comprises the following components in parts by weight: 2 parts of hydroxypropyl methyl cellulose, 0.6 part of 1, 2-propylene glycol, 1 part of glycerol, 0.1 part of sodium hydroxide, 0.3 part of citric acid, 25 parts of cassava oxidized starch and 70.5 parts of water.
The preparation method of the coating comprises the following steps:
(1) uniformly mixing hydroxypropyl methyl cellulose, 1, 2-propylene glycol, glycerol and water at the rotation speed of 500rpm at the temperature of 80 ℃, then cooling to 25 ℃, adding sodium hydroxide and citric acid into the mixture, and uniformly mixing to obtain a mixed solution with the pH value of 7;
(2) and (2) uniformly mixing the mixed solution obtained in the step (1) with cassava oxidized starch to obtain the coating.
The modified paper is prepared by adopting the following method:
coating the coating on any surface of paper, and drying at 120 ℃ to obtain the modified paper; the coating dry weight of the coating is 1.5g/m2。
Example 4
The invention provides a coating and modified paper, wherein the coating comprises the following components in parts by weight: 1.2 parts of sodium carboxymethylcellulose, 0.45 part of 1, 3-butanediol, 0.9 part of glycerol, 0.25 part of sodium hydroxide, 0.5 part of citric acid, 10 parts of corn oxidized starch and 86.4 parts of water.
The preparation method of the coating comprises the following steps:
(1) uniformly mixing sodium carboxymethylcellulose, 1, 3-butanediol, glycerol and water at the rotation speed of 200rpm at 70 ℃, cooling to 18 ℃, adding sodium hydroxide and citric acid, and uniformly mixing to obtain a mixed solution with the pH of 7.2;
(2) and (2) uniformly mixing the mixed solution obtained in the step (1) with the corn oxidized starch to obtain the coating.
The modified paper is prepared by adopting the following method:
coating the coating on any surface of paper, and drying at 90 ℃ to obtain the modified paper; the coating has a dry coating weight of 3g/m2。
Example 5
The embodiment provides a coating and modified paper, and the difference from the embodiment 1 is only that the weight part of xylitol in the coating is 0.5 part, and the weight part of propylene glycol is 0.5 part; other conditions were the same as in example 1.
Example 6
The embodiment provides a coating and modified paper, and the difference from the embodiment 1 is only that the weight part of xylitol in the coating is 0.33 part, and the weight part of propylene glycol is 0.67 part; other conditions were the same as in example 1.
Example 7
The embodiment provides a coating and modified paper, which are different from the embodiment 1 only in that the coating comprises 0.57 part by weight of xylitol and 0.43 part by weight of propylene glycol; other conditions were the same as in example 1.
Example 8
The embodiment provides a coating and modified paper, and the difference from the embodiment 1 is only that the weight part of xylitol in the coating is 0.3 part, and the weight part of propylene glycol is 0.7 part; other conditions were the same as in example 1.
Example 9
The embodiment provides a coating and modified paper, and the difference from the embodiment 1 is only that the weight part of the corn oxidized starch in the coating is 10 parts, and the weight part of the water in the coating is 87.2 parts; other conditions were the same as in example 1.
Example 10
The embodiment provides a coating and modified paper, and the difference from the embodiment 1 is only that the weight part of the corn oxidized starch in the coating is 30 parts, and the weight part of the water is 67.2 parts; other conditions were the same as in example 1.
Comparative example 1
The comparative example provides a coating and modified paper, and is different from example 1 only in that the coating comprises 5 parts by weight of corn oxidized starch and 92.2 parts by weight of water; other conditions were the same as in example 1.
Comparative example 2
The comparative example provides a coating and modified paper, and is different from example 1 only in that the coating comprises 40 parts by weight of corn oxidized starch and 57.2 parts by weight of water; other conditions were the same as in example 1.
Comparative example 3
The comparative example provides a coating and modified paper, which are different from example 1 only in that the coating does not contain xylitol, and the weight part of propylene glycol is 1.4 parts; other conditions were the same as in example 1.
Comparative example 4
The comparative example provides a coating and modified paper, which are different from example 1 only in that propylene glycol is not contained in the coating, and the weight part of xylitol is 1.4 parts; other conditions were the same as in example 1.
The coatings and modified papers provided in the above examples and comparative examples were tested for their performance according to the following test criteria:
viscosity: ASTM D2196-2018;
aging resistance: FINAT FTM 11;
the silicon oil bearing capacity: testing according to FINAT FTM10, and observing whether the silicone oil permeates to the side of the coated modified paper far away from the silicone oil;
wherein X represents that the silicone oil is not permeated, and O represents that the silicone oil is permeated and the modified paper is soaked.
The modified papers provided in the above examples and comparative examples have the following properties as measured in table 1:
TABLE 1
Viscosity (cps) Aging resistance (%) Silicon oil carrying capacity
Example 1 150 82±1.5 X
Example 2 80 85±1.2 X
Example 3 200 83±1.3 X
Example 4 170 80±2 X
Example 5 100 80±1.5 X
Example 6 110 83±1.2 X
Example 7 120 60±2.1 O
Example 8 130 50±3.2 O
Example 9 170 80±1.2 X
Example 10 150 83±1.3 X
Comparative example 1 160 57±1.2 O
Comparative example 2 170 36±2.3 O
Comparative example 3 100 32±1 O
Comparative example 4 110 40±1 O
As can be seen from Table 1, through the design of the components of the coating and the synergistic interaction of the dihydric alcohol and the polyhydric alcohol, the mass ratio of the dihydric alcohol to the polyhydric alcohol is further controlled within a specific proportion range, and the content of oxidized starch is controlled within a specific range, so that the prepared coating has excellent environmental-friendly and degradable performances, the viscosity of the coating is 80-200 cps, and the coating is easy to coat; the modified paper further prepared has good aging resistance and silicone oil bearing capacity, the aging resistance is (80 +/-2-85 +/-1.2)%, and the modified paper has excellent silicone oil bearing capacity, and meanwhile, the modified paper provided by the invention is degradable, pollution-free and environment-friendly, meets the use requirement of 'plastic-free' and is suitable for being used as an environment-friendly packaging material.
Compared with example 1, if the mass ratio of the dihydric alcohol to the polyhydric alcohol is relatively large (example 7), the aging resistance of the prepared modified paper is poor, namely (60 +/-2.1)%, and the capability of bearing silicone oil is poor; if the mass of the dihydric alcohol and the polyhydric alcohol is relatively small (example 8), the aging resistance of the modified paper prepared is (50 ± 3.2)%, and the ability to carry silicone oil is poor. Therefore, the modified paper prepared by controlling the mass ratio of the dihydric alcohol to the polyhydric alcohol within a specific proportion range has good aging resistance and good silicon oil bearing capacity, and meets the use requirements.
Compared with example 1, if the content of oxidized starch in the coating is small (comparative example 1), the prepared modified paper has poor aging resistance of (57 +/-1.2)%, and poor capability of bearing silicone oil; if the content of oxidized starch in the coating is large (comparative example 2), the prepared modified paper has poor aging resistance of (36 +/-2.3)%, and poor ability to carry silicone oil. Therefore, when the addition amount of the oxidized starch is too small or too large, the prepared modified paper has poor ageing resistance and poor silicon oil bearing capacity, and does not meet the use requirements.
Compared with example 1, if the coating does not contain dihydric alcohol (comparative example 3), the prepared modified paper has poor aging resistance which is (32 +/-1)%, and poor capability of bearing silicone oil; if the coating does not contain the polyol (comparative example 4), the prepared modified paper has poor aging resistance of (40 +/-1)%, and has poor capability of bearing silicone oil, thus not meeting the use requirement. Therefore, the dihydric alcohol and the polyhydric alcohol have a synergistic effect, and when the dihydric alcohol and the polyhydric alcohol are used in a matched mode, the prepared modified paper has good ageing resistance and good silicon oil bearing capacity, and meets the use requirements.
In conclusion, through the design of the components of the coating, the synergistic interaction of the dihydric alcohol and the polyhydric alcohol, the mass ratio of the dihydric alcohol to the polyhydric alcohol is further controlled within a specific proportion range, and the content of the oxidized starch is controlled within a specific range, so that the prepared coating has excellent environmental-friendly, degradable and easy-coating performances, and the modified paper prepared further has better aging resistance and silicon oil bearing capacity.
The applicant states that the present invention is illustrated by the detailed process flow of the present invention through the above examples, but the present invention is not limited to the above detailed process flow, that is, it does not mean that the present invention must rely on the above detailed process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims (10)

1.一种涂料，其特征在于，所述涂料包括如下重量份数的组分：纤维素0.1～2份、二元醇0.3～0.6份、多元醇0.3～1份和氧化淀粉10～30份。1. a coating, it is characterised in that the coating comprises the following components by weight: 0.1-2 parts of cellulose, 0.3-0.6 parts of dihydric alcohols, 0.3-1 parts of polyols and 10-30 parts of oxidized starch . 2.根据权利要求1所述的涂料，其特征在于，所述纤维素选自羧甲基纤维素钠、羧甲基纤维素钙或羟丙基甲基纤维素中的任意一种或至少两种的组合；2. coating according to claim 1 is characterized in that, described cellulose is selected from any one or at least two in sodium carboxymethyl cellulose, calcium carboxymethyl cellulose or hydroxypropyl methyl cellulose. a combination of species; 优选地，所述二元醇选自乙二醇、二乙二醇醚、丙二醇、丁二醇、异丁二醇或戊二醇中的任意一种或至少两种的组合；Preferably, the glycol is selected from any one or a combination of at least two of ethylene glycol, diethylene glycol ether, propylene glycol, butylene glycol, isobutylene glycol or pentylene glycol; 优选地，所述多元醇为三元醇；Preferably, the polyol is a triol; 优选地，所述三元醇选自甘油和/或1,1,1-三羟甲基丙烷；Preferably, the trihydric alcohol is selected from glycerol and/or 1,1,1-trimethylolpropane; 优选地，所述二元醇和多元醇的质量比为1:(1～2)；Preferably, the mass ratio of the dihydric alcohol and the polyhydric alcohol is 1:(1～2); 优选地，所述氧化淀粉选自木薯氧化淀粉、玉米氧化淀粉或小麦氧化淀粉中的任意一种或至少两种的组合。Preferably, the oxidized starch is selected from any one or a combination of at least two of tapioca oxidized starch, corn oxidized starch or wheat oxidized starch. 3.根据权利要求1或2所述的涂料，其特征在于，所述涂料中还包括pH调节剂0.4～1份；3. The coating according to claim 1 or 2, characterized in that, the coating further comprises 0.4 to 1 part of a pH adjuster; 优选地，所述pH调节剂选自氢氧化钠、柠檬酸、氢氧化钾或乙酸中的任意一种或至少两种的组合，进一步优选为氢氧化钠和柠檬酸的组合；Preferably, the pH adjusting agent is selected from any one or a combination of at least two of sodium hydroxide, citric acid, potassium hydroxide or acetic acid, more preferably a combination of sodium hydroxide and citric acid; 优选地，所述涂料中还包括水67～88份。Preferably, the coating also includes 67-88 parts of water. 4.根据权利要求1-3任一项所述的涂料，其特征在于，所述涂料的黏度为80～200cps；4. The coating according to any one of claims 1-3, wherein the coating has a viscosity of 80-200 cps; 优选地，所述涂料的固含量为18～36％。Preferably, the solid content of the coating is 18-36%. 5.一种如权利要求1-4任一项所述的涂料的制备方法，其特征在于，所述制备方法包括如下步骤：5. a preparation method of coating as described in any one of claim 1-4, is characterized in that, described preparation method comprises the steps: (1)将纤维素、二元醇、多元醇、水和任选的pH调节剂混合，得到混合液；(1) mixing cellulose, dihydric alcohol, polyhydric alcohol, water and optional pH adjusting agent to obtain a mixed solution; (2)将步骤(1)得到的混合液和氧化淀粉混合，得到所述涂料。(2) mixing the mixed solution obtained in step (1) and oxidized starch to obtain the coating. 6.根据权利要求5所述的制备方法，其特征在于，步骤(1)所述混合的温度为15～25℃；6. The preparation method according to claim 5, wherein the temperature of the mixing in step (1) is 15-25°C; 优选地，步骤(1)所述混合液的pH为7～8；Preferably, the pH of the mixed solution in step (1) is 7-8; 优选地，步骤(1)所述混合液的固含量为3～5％；Preferably, the solid content of the mixed solution in step (1) is 3-5%; 优选地，步骤(1)所述混合前还包括预处理的步骤；Preferably, before the mixing in step (1), the step of preprocessing is also included; 优选地，所述预处理的方法为：将纤维素、二元醇、多元醇和水混合；Preferably, the method of the pretreatment is: mixing cellulose, dihydric alcohol, polyhydric alcohol and water; 优选地，预处理所述混合的温度为60～80℃；Preferably, the temperature of the pretreatment of the mixing is 60-80°C; 优选地，预处理所述混合的方法为搅拌；Preferably, the method of pretreating the mixing is stirring; 优选地，所述搅拌的转速为100～500rpm。Preferably, the rotational speed of the stirring is 100-500 rpm. 7.根据权利要求5或6所述的制备方法，其特征在于，所述制备方法具体包括如下步骤：7. preparation method according to claim 5 or 6, is characterized in that, described preparation method specifically comprises the steps: (1)在60～80℃下，将纤维素、二元醇、多元醇和水在转速为100～500rpm的条件下，混合均匀，然后降温至15～25℃，向其中加入pH调节剂并混合均匀，得到pH为7～8的混合液；(1) Under the condition of 60～80℃, cellulose, dihydric alcohol, polyhydric alcohol and water are mixed evenly under the condition that the rotating speed is 100～500rpm, then the temperature is lowered to 15～25℃, pH adjuster is added and mixed uniform, to obtain a mixed solution with a pH of 7 to 8; (2)将步骤(1)得到的混合液和氧化淀粉混合均匀，得到所述涂料。(2) uniformly mixing the mixed solution obtained in step (1) and oxidized starch to obtain the coating. 8.一种改性纸，其特征在于，所述改性纸采用如下方法制备得到：8. A modified paper, characterized in that, the modified paper is prepared by the following method: 在纸张的任意一面涂布涂料后干燥，得到所述改性纸；After coating any side of the paper, the coating is dried to obtain the modified paper; 所述涂料包括如权利要求1-4任一项所述的涂料。The coating comprises the coating of any one of claims 1-4. 9.根据权利要求8所述的改性纸，其特征在于，所述涂布的涂布干量为0.5～3g/m2；9 . The modified paper according to claim 8 , wherein the coating dry weight of the coating is 0.5˜3 g/m 2 ; 10 . 优选地，所述干燥的温度为80～120℃。Preferably, the drying temperature is 80-120°C. 10.一种如权利要求8或9所述的改性纸在包装材料中的应用。10. An application of the modified paper as claimed in claim 8 or 9 in packaging materials.
CN202110272413.5A 2021-03-12 2021-03-12 Coating, modified paper, and preparation method and application thereof Pending CN112982017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110272413.5A CN112982017A (en) 2021-03-12 2021-03-12 Coating, modified paper, and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110272413.5A CN112982017A (en) 2021-03-12 2021-03-12 Coating, modified paper, and preparation method and application thereof

Publications (1)

Publication Number Publication Date
CN112982017A true CN112982017A (en) 2021-06-18

Family

ID=76335161

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110272413.5A Pending CN112982017A (en) 2021-03-12 2021-03-12 Coating, modified paper, and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN112982017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115262286A (en) * 2022-08-12 2022-11-01 山东润佳新材料有限公司 Silicone oil paper for food steamer and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979343A (en) * 1972-09-22 1976-09-07 Reed International Limited Surface coating compositions containing pigment coated with a polymeric organic polyol
JP2000219777A (en) * 1999-02-01 2000-08-08 Oji Paper Co Ltd Thermoplastic cellulose derivative composition and molded article using the same
WO2015044293A1 (en) * 2013-09-27 2015-04-02 Thueringisches Institut Fuer Textil- Und Kunststoff-Forschung E.V. Compositions for multifunctional coating films which can be applied in liquid form
JP2016075012A (en) * 2014-10-09 2016-05-12 サンノプコ株式会社 Paper durability enhancing agent and manufacturing method of paper durability enhancing agent and paper durability enhancing paper
US20160230342A1 (en) * 2013-09-18 2016-08-11 Innogel Ag Packaging material comprising a starch-based barrier coating and coating composition and process for producing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979343A (en) * 1972-09-22 1976-09-07 Reed International Limited Surface coating compositions containing pigment coated with a polymeric organic polyol
JP2000219777A (en) * 1999-02-01 2000-08-08 Oji Paper Co Ltd Thermoplastic cellulose derivative composition and molded article using the same
US20160230342A1 (en) * 2013-09-18 2016-08-11 Innogel Ag Packaging material comprising a starch-based barrier coating and coating composition and process for producing the same
WO2015044293A1 (en) * 2013-09-27 2015-04-02 Thueringisches Institut Fuer Textil- Und Kunststoff-Forschung E.V. Compositions for multifunctional coating films which can be applied in liquid form
JP2016075012A (en) * 2014-10-09 2016-05-12 サンノプコ株式会社 Paper durability enhancing agent and manufacturing method of paper durability enhancing agent and paper durability enhancing paper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115262286A (en) * 2022-08-12 2022-11-01 山东润佳新材料有限公司 Silicone oil paper for food steamer and preparation method thereof

Similar Documents

Publication Publication Date Title
CN101797999B (en) Packaging film for natural cellulose cigarette with heat sealing layer-coated surface and its preparation method
CN102241862A (en) Preparation of water resistant polyvinyl alcohol biodegradable film through melt extrusion method
CN106700134B (en) Degradable casting films of starch-based bio and preparation method thereof
CN109627703B (en) Preparation method of biodegradable self-sealing strip
CN102304260A (en) Polyvinyl alcohol foaming material and manufacture method thereof
CN103113698A (en) Plasticizer formula for hot melting process of partially alcoholized polyvinyl alcohol and process
CN111621239B (en) Full-biodegradable adhesive tape and preparation method thereof
CN111576090B (en) Degradable paper cup and preparation method thereof
CN104592730B (en) A kind of polylactic acid/polyester alloy and preparation method thereof
CN111087775A (en) Biodegradable composite material, preparation method and biodegradable container bottom plate
CN102391555A (en) Calcium plastic starch resin sheets
CN120645531A (en) High-barrier environment-friendly packaging film with antibacterial function
CN112982017A (en) Coating, modified paper, and preparation method and application thereof
CN110105732A (en) A kind of powdered rice hulls/polylactic acid biodegradable composite and preparation method thereof
EP0781807B1 (en) Biodegradable composition, a process and equipment for preparing the same
CN101864184B (en) Thermoplastic vegetable fiber/starch blending material and preparation method thereof
CN101824228A (en) Thermoplastic plant fiber/polyhydroxyalkanoates blending material and preparation method thereof
CN102838769B (en) Preparation method of moisture absorption packaging film
CN112796167A (en) Biodegradable low-temperature-resistant laminating paper and preparation method thereof
JP2000327891A (en) Resin composition for calendering
CN115260662A (en) High-toughness bio-based plastic/polypropylene composite material and preparation method thereof
CN103865107B (en) The preparation method of complete biodegradable resin prepared by non-staple food grain complex denaturation hydrophobic starch and preparation facilities thereof
CN109161058B (en) Starch-based material with cold water solubility characteristic and preparation and application thereof
CN103469678A (en) Preparation method of recyclable coated paper
CN102443240A (en) High-elastic waterproof cloth material and manufacturing method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210618