CN118652494B

CN118652494B - A PP lunch box recycled material for carpet fibers and its preparation method

Info

Publication number: CN118652494B
Application number: CN202410893997.1A
Authority: CN
Inventors: 石传捷; 石传兴; 高一铭
Original assignee: Dongguan Yujie Industry Investment Co ltd
Current assignee: Dongguan Yujie Industry Investment Co ltd
Priority date: 2024-07-04
Filing date: 2024-07-04
Publication date: 2025-10-28
Anticipated expiration: 2044-07-04
Also published as: CN118652494A

Abstract

The application relates to the field, in particular to a recycled PP cutlery box material for carpet fibers and a preparation method thereof. The plastic-coated PP lunch box comprises the following raw materials, by weight, 100 parts of PP lunch box reclaimed materials, 1-5 parts of lubricants, 1-10 parts of plasticizers, 0.2-2 parts of anti-aging agents and 10-30 parts of modifying agents, wherein the modifying agents comprise toughening compatilizers, nano whisker and silicone master batches in a weight ratio of 1 (2.25-3) to 0.4-1. The obtained modifier has better toughening and anti-fouling effects through compounding the toughening compatilizer, the nano whisker and the silicone master batch, is blended and modified with the recycled PP cutlery box material, and has better anti-fouling property, flexibility, elasticity and the like after spinning carpet fibers under the auxiliary action of the plasticizer, the anti-aging agent and the lubricant, so that the possibility of abrasion, stain generation and the like of the produced carpet is reduced, and the durability and the anti-fouling property of the carpet are improved.

Description

PP cutlery box recycling material for carpet fibers and preparation method thereof

Technical Field

The application relates to the field of reclaimed material modification, in particular to a reclaimed material of a PP cutlery box for carpet fibers and a preparation method thereof.

Background

PP is often used for producing disposable cutlery boxes due to the advantages of no toxicity and smell, heat resistance, impact resistance, easiness in processing and the like, and along with the rapid development of the fast food industry, various prefabricated dishes and catering industry are increasingly increased, and the demand for disposable cutlery boxes is also increased. Therefore, a large number of discarded PP cutlery boxes are generated, and after most cutlery boxes are discarded, the cutlery boxes are usually burned as garbage, so that the environmental impact is easy to occur, and a small part of PP cutlery boxes are recycled.

The carpet fiber is a main raw material for producing carpets, and the carpets produced by adopting the PP carpet fiber have the advantages of better wear resistance, elasticity, easy cleaning, low water absorption and the like, and are commonly used in occasions such as automobiles, houses, offices, commercial spaces and the like. However, the physical properties of the recycled materials are reduced, so that the application range of recycled materials of the PP cutlery box is limited.

At present, the recycled materials are recycled by the PP cutlery box, and PA, PET, glass fibers and the like are added for blending modification, so that the physical properties of the recycled materials can be further improved, but the carpet fibers obtained by spinning the recycled materials are recycled by the PP cutlery box, and the carpet manufactured by the spinning process is easy to abrade, generate dirt and the like in the use process, and reduce the durability of the carpet, so that further research is needed.

Disclosure of Invention

The application provides a PP cutlery box recycling material for carpet fibers and a preparation method thereof, aiming at solving the technical problems that carpet is easy to abrade and is easy to pollute dirt.

In a first aspect, the application provides a recycled PP cutlery box material for carpet fibers, which comprises the following raw materials in parts by weight:

100 parts of PP cutlery box reclaimed material

1-5 Parts of lubricant

1-10 Parts of plasticizer

0.2-2 Parts of anti-aging agent

10-30 Parts of modifier;

the modifier consists of toughening compatilizer, nano whisker and silicone master batch in a weight ratio of 1 (2.25-3) to 0.4-1.

In the scheme, the toughening compatilizer has the toughening effect, and the compatibility of nano whisker and silicone master batch in a raw material system of the recycled and regenerated PP cutlery box material is further improved, so that the recycled and regenerated PP cutlery box material has better dirt resistance and toughness, and further the carpet fiber prepared from the recycled and regenerated PP cutlery box material has better elasticity, wear resistance and dirt resistance.

The nanometer whisker and the silicone master batch have better toughness and dirt resistance, and interact with a toughening compatilizer to further improve the flexibility, wear resistance and dirt resistance of the recycled PP cutlery box material, so that the carpet fiber obtained by spinning recycled PP cutlery box recycled materials is used for carpet production, and has better buffering property, flexibility and dirt resistance. When the carpet walks on the surface of the carpet for a long time, the phenomenon of abrasion is reduced, meanwhile, the carpet is not easy to be polluted, and the durability and the dirt resistance of the carpet are further improved.

Compared with the PP cutlery box reclaimed material modified by blending PA, PET and glass fibers, the PP cutlery box reclaimed material prepared by the application has better softness, dirt resistance, wear resistance and elongation, so that the prepared carpet is easy to clean and easy to process and install.

The PP cutlery box reclaimed material is obtained by recycling waste PP cutlery boxes, cleaning, drying, crushing and other recycling processes.

In conclusion, the obtained modifier has better toughening and anti-fouling effects through compounding the toughening compatilizer, the nano whisker and the silicone master batch, is blended and modified with the recycled PP cutlery box material, and has better anti-fouling property, flexibility, elasticity and the like under the auxiliary action of the plasticizer, the anti-aging agent and the lubricant, so that the carpet fiber produced by the recycled PP cutlery box material is reduced in possibility of abrasion, stains and the like of the produced carpet, and the durability and the anti-fouling property of the carpet are improved.

Preferably, the nano whisker is one or more of mullite whisker, aluminum borate whisker and SiC whisker.

The mullite whisker, the aluminum borate whisker and the SiC whisker can be matched with silicone master batch and toughening compatilizer, so that the recycled and regenerated material of the PP cutlery box has better toughness, elasticity and dirt resistance, and the carpet produced by the obtained carpet fiber has better abrasion resistance and dirt resistance.

Specifically, the mullite whisker and the aluminum borate whisker have higher strength and elongation, so that the carpet fiber has better flexibility and wear resistance, and has low surface energy and water absorption, reduces dirt adsorption, water adsorption and the like, and improves the anti-fouling property of the carpet.

The SiC whisker has better strength and wear resistance, and can further improve the wear resistance and strength of carpet fibers.

When the application adopts mullite whisker, aluminum borate whisker and SiC whisker in the weight ratio of (1-3) (1.2-1.8): 1 to perform the compounding, the application plays a better role, plays a better synergistic effect, and cooperates with a toughening compatilizer to ensure that the prepared recycled and regenerated PP cutlery box material is used for carpet fiber, plays better roles of toughening, wear resistance and dirt resistance, and ensures that the prepared carpet has better wear resistance and dirt resistance.

Preferably, the toughening compatilizer is a maleic anhydride compatilizer and/or a silane-based anti-fouling compatilizer.

The maleic anhydride compatilizer and/or the silane-based anti-fouling compatilizer are adopted to achieve the effects of compatibility and toughening, and the nanometer whisker and the silicone master batch are matched to achieve a better synergistic effect on the recycled materials of the PP cutlery box, so that the obtained carpet has better wear resistance and anti-fouling property.

Preferably, the maleic anhydride compatilizer is maleic anhydride grafted POE and/or vinyl chloride-vinyl acetate-maleic anhydride ternary copolymer resin.

The maleic anhydride grafted POE and/or the vinyl chloride-vinyl acetate-maleic anhydride ternary copolymer resin plays a role in promoting dispersion of nano whisker and silicone master batch, and improves the compatibility of the nano whisker and silicone master batch in a raw material system of recycled materials of the PP cutlery box, so that the recycled materials of the PP cutlery box have better toughening and elongation, and the toughness, the elasticity and the like of carpet fibers obtained by the recycled materials of the PP cutlery box are improved, and further the wear resistance and the anti-fouling property of the carpet are improved.

Preferably, the silane-based anti-fouling compatilizer is prepared from 2-isopropyl-2-adamantyl methacrylate, tetraethyleneglycol di-2-methacrylate, long-chain alkyl acrylate,

The silicon-based acrylic ester monomer, an initiator and a solvent.

Preferably, the modifier is prepared by the following method:

According to the weight portions, 0.1 to 0.5 portion of 2-isopropyl-2-adamantyl methacrylate, 0.2 to 0.8 portion of tetraethyleneglycol di-2-methacrylate, 0.1 to 0.5 portion of long-chain alkyl acrylate, 1.1 to 1.7 portions of silane-based acrylate monomer, 0.01 to 0.03 portion of initiator and 1 to 3 portions of solvent are weighed and uniformly mixed, heated to 62 to 75 ℃, reacted for 2 to 3 hours and neutralized to obtain a silane-based anti-fouling compatilizer, then maleic anhydride compatilizer and silane-based anti-fouling compatilizer are added, and uniformly stirred, then nano whisker and silicone master batch are added, and the solvent is removed under reduced pressure and cooled to obtain the modifier.

The silane-based anti-fouling compatilizer with good compatibility, good toughness and good anti-fouling property is obtained by compounding and copolymerizing 2-isopropyl-2-adamantyl methyl propylene, tetraethylene glycol di-2-methyl acrylate, long-chain alkyl acrylate and silane-based acrylate monomers, and after the silane-based anti-fouling compatilizer is matched with maleic anhydride compatilizer, the silane-based anti-fouling compatilizer plays a better role in synergy, and then is matched with nano whisker and silicone master batch, so that the obtained modifier can fully be compatible with recycled materials of PP cutlery boxes and the like, plays a better role in synergy, and enables the obtained carpet fiber to have better toughness, elasticity and anti-fouling property, and plays better wear resistance and anti-fouling property when the silane-based anti-fouling agent is applied to carpets, and the durability of carpets is improved.

Preferably, the long chain alkyl acrylate is myristyl acrylate and/or oil-based methacrylate.

Adopting acrylic myristyl ester and/or oil-based methacrylate, then matching with 2-isopropyl-2-adamantyl methacrylate, tetraethylene glycol di-2-methacrylate and alkyl acrylate monomer for compound copolymerization, the obtained silicane-based anti-fouling compatilizer has better compatibility and toughening effect, and further improves the toughness and the extensibility of recycled materials of the PP cutlery box after being compounded with nano whisker and silicone master batch.

Preferably, the silyl acrylate monomer is 3- (methacryloxy) propyl trimethoxysilane and/or 1, 3-bis (3-methacryloxypropyl) tetra (trimethylsiloxy) disiloxane.

When 3- (methacryloyloxy) propyl trimethoxysilane and/or 1, 3-bis (3-methacryloyloxy) propyl) tetra (trimethylsiloxy) disiloxane are used as the silane-based acrylate monomers, the material system of the silane-based anti-fouling compatilizer is matched, so that a better synergistic effect is achieved. And further, after the recycled materials of the PP cutlery box are recycled, the obtained carpet has better wear resistance and dirt resistance.

In a second aspect, the application provides a method for preparing recycled materials of PP cutlery boxes for carpet fibers, which adopts the following technical scheme:

weighing the toughening compatilizer, the nano whisker and the silicone master batch according to the weight parts, and uniformly mixing to obtain the modifier.

And weighing the recycled PP cutlery box material, the lubricant, the plasticizer, the anti-aging agent and the modifier according to parts by weight, uniformly mixing, extruding, cooling, drying and granulating to obtain the recycled PP cutlery box material.

In summary, the application has the following beneficial effects:

1. The obtained modifier has better toughening effect and anti-fouling effect through compounding the toughening compatilizer, nano whisker and silicone master batch, is blended and modified with the recycled PP cutlery box material, and has better anti-fouling property, flexibility, elasticity and the like under the auxiliary effect of the plasticizer, the anti-aging agent and the lubricant, so that the carpet fiber produced by the recycled PP cutlery box recycled material is reduced in possibility of abrasion, stain generation and the like of the produced carpet, and the durability and the anti-fouling property of the carpet are improved.

2. The silane-based anti-fouling compatilizer with good compatibility, good toughness and good anti-fouling property is obtained by compounding and copolymerizing 2-isopropyl-2-adamantyl methyl propylene, tetraethylene glycol di-2-methyl acrylate, long-chain alkyl acrylate and silane-based acrylate monomers, and after the silane-based anti-fouling compatilizer is matched with maleic anhydride compatilizer, the silane-based anti-fouling compatilizer plays a better role in synergy, and then is matched with nano whisker and silicone master batch, so that the obtained modifier can fully be compatible with recycled materials of PP cutlery boxes and the like, plays a better role in synergy, and enables the obtained carpet fiber to have better toughness, elasticity and anti-fouling property, and plays better wear resistance and anti-fouling property when the silane-based anti-fouling agent is applied to carpets, and the durability of carpets is improved.

Detailed Description

The present application will be described in further detail with reference to examples.

Introducing partial materials;

Table 1 section introduction to materials

Examples

Example 1

The preparation method of the recycled material of the PP cutlery box for carpet fiber comprises the following steps:

2kg of toughening compatilizer (maleic anhydride compatilizer, specifically maleic anhydride grafted POE), 6kg of nano whisker (mullite whisker) and 2kg of silicone master batch are weighed, put into a heating and stirring device, heated to 120 ℃, stirred for 10min at the rotating speed of 150r/min, fully and uniformly mixed, and cooled to 35 ℃ to obtain the modifier.

Weighing 100kgPP lunch box reclaimed materials, 1kg of lubricant, 1kg of plasticizer, 0.2kg of anti-aging agent and 10kg of modifier, putting into a high-speed mixer, stirring for 10min at the rotating speed of 150r/min, transferring into a double-screw extruder, extruding, cooling to 40 ℃ by a cooling device, drying by a drying device, wherein the drying temperature is 100 ℃ and the drying time is 30s, granulating in a granulator, and obtaining PP lunch box reclaimed materials.

Table 2 temperature setting of twin screw extruder

Example 2

Example 2 differs from example 1 in the amount used, in particular:

5kg of toughening compatilizer (maleic anhydride compatilizer, specifically maleic anhydride grafted POE), 8kg of nano whisker (mullite whisker), 2kg of silicone master batch, 100kgPP of cutlery box reclaimed materials, 3kg of lubricant, 5kg of plasticizer and 1kg of anti-aging agent.

Example 3

Example 3 differs from example 1 in the amount used, in particular:

8kg of toughening compatilizer (maleic anhydride compatilizer, specifically maleic anhydride grafted POE), 18kg of nano whisker (mullite whisker), 4kg of silicone master batch, 100kgPP kg of cutlery box reclaimed materials, 5kg of lubricant, 10kg of plasticizer and 2kg of anti-aging agent.

Example 4

Example 4 differs from example 2 in that the nanowhisker consists of 4kg mullite whisker, 4kg aluminum borate whisker.

Example 5

Example 5 differs from example 2 in that the nanowhisker consists of 4kg aluminium borate whisker and 4kgSiC whisker.

Example 6

Example 6 differs from example 2 in that the nanowhisker consists of 4kg mullite whisker, 3kg aluminum borate whisker, 1kgSiC whisker.

Example 7

Example 7 differs from example 6 in that the maleic anhydride-based compatibilizer is a vinyl chloride-vinyl acetate-maleic anhydride terpolymer resin.

Example 8

Example 8 differs from example 6 in that the maleic anhydride-based compatibilizer consists of 3kg of maleic anhydride grafted POE and 2kg of vinyl chloride-vinyl acetate-maleic anhydride terpolymer resin.

Example 9

The difference between the embodiment 9 and the embodiment 8 is that the toughening compatilizer consists of maleic anhydride grafted POE, vinyl chloride-vinyl acetate-maleic anhydride ternary copolymer resin and alkyl anti-fouling compatilizer, and the preparation process of the modifier is different, specifically, 0.1kg of 2-isopropyl-2-adamantyl methacrylate, 0.8kg of tetraethyleneglycol di-2-methacrylate, 0.5kg of long-chain alkyl acrylate (myristyl acrylate), 1.1kg of long-chain silane acrylate (3- (methacryloyloxy) propyl trimethoxysilane), 0.01kg of initiator (tert-butyl peroxybenzoate) and 1kg of ethyl acetate are weighed, stirred for 5min at the rotating speed of 50r/min, fully and uniformly mixed, heated to 62 ℃, reacted for 2h under the stirring state, the PH value is adjusted to 7, 1.5kg of maleic anhydride grafted POE, 1kg of vinyl chloride-vinyl acetate-maleic anhydride ternary copolymer resin and silane-based anti-fouling compatilizer are further added, stirred for 30 kg of long-chain alkyl acrylate, the silicone is further stirred for 8kg, the silicone is distilled to be cooled to be uniform, the temperature is reduced, the silicone is obtained, the silicone is subjected to 35 ℃, and the modified particles are subjected to cooling to uniform cooling.

Example 10

Example 10 differs from example 9 in that the amounts of the raw materials in the modifier are different, and the specific steps are as follows:

Weighing 0.3kg of 2-isopropyl-2-adamantyl methacrylate, 0.5kg of tetraethyleneglycol di-2-methacrylate, 0.3kg of long-chain alkyl acrylate (myristyl acrylate), 1.4kg of long-chain silane acrylate (3- (methacryloyloxy) propyl trimethoxysilane), 0.02kg of initiator and 2kg of ethyl acetate, stirring for 5min at the rotating speed of 50r/min, fully and uniformly mixing, heating to 70 ℃, reacting for 3h in a stirring state to obtain a silane-based anti-fouling compatilizer, adding 1.5kg of maleic anhydride grafted POE and 1kg of vinyl chloride-vinyl acetate-maleic anhydride ternary copolymer resin and a silane-based anti-fouling compatilizer, continuously stirring for 30min, adding 8kg of nano whisker and 2kg of silicone master batch, stirring uniformly, heating to 105 ℃, distilling under reduced pressure to remove ethyl acetate, and cooling to 35 ℃ to obtain the modifier.

Example 11

Example 11 differs from example 9 in the amount of each raw material used in the modifier, and is specifically as follows:

weighing 0.5kg of 2-isopropyl-2-adamantyl methacrylate, 0.2kg of tetraethyleneglycol di-2-methacrylate, 0.1kg of long-chain alkyl acrylate (myristyl acrylate), 1.7kg of long-chain silane acrylate (3- (methacryloyloxy) propyl trimethoxysilane), 0.03kg of initiator and 3kg of ethyl acetate, stirring for 5min at the rotating speed of 50r/min, fully and uniformly mixing, heating to 75 ℃, reacting for 2h in a stirring state to obtain a silane-based anti-fouling compatilizer, adding 1.5kg of maleic anhydride grafted POE and 1kg of vinyl chloride-vinyl acetate-maleic anhydride ternary copolymer resin and a silane-based anti-fouling compatilizer, continuously stirring for 30min, adding 8kg of nano whisker and 2kg of silicone master batch, stirring uniformly, heating to 105 ℃, distilling under reduced pressure to remove ethyl acetate, and cooling to 35 ℃ to obtain the modifier.

Example 12

Example 12 differs from example 10 in that the long chain alkyl acrylate is an oil-based methacrylate.

Example 13

Example 13 differs from example 10 in that the long chain alkyl acrylate consists of 0.2kg of myristyl acrylate and 0.1kg of oil-based methacrylate.

Example 14

Example 14 differs from example 13 in that the long chain silyl acrylate is 1, 3-bis (3-methacryloxypropyl) tetra (trimethylsiloxy) disiloxane.

Example 15

Example 15 differs from example 13 in that the long-chain silane-based acrylate consists of 1.0kg of 3- (methacryloyloxy) propyl trimethoxysilane and 0.4kg of 1, 3-bis (3-methacryloxypropyl) tetrakis (trimethylsiloxy) disiloxane.

Example 16

Example 16 differs from example 9 in that 2-isopropyl-2-adamantyl methacrylate is replaced by tetraethyleneglycol di-2-methacrylate in equal amounts.

Example 17

Example 17 differs from example 9 in that tetraethyleneglycol di-2-methacrylate is replaced by 2-isopropyl-2-adamantyl methacrylate in equal amounts.

Example 18

Example 18 differs from example 9 in that the long-chain alkyl acrylate is replaced by an equivalent amount of a silyl acrylate monomer.

Example 19

Example 19 differs from example 9 in that 2-isopropyl-2-adamantyl methacrylate, tetraethyleneglycol di-2-methacrylate are equally substituted for the long-chain alkyl acrylate.

Comparative example

Comparative example 1

Comparative example 1 differs from example 1 in that the modifier was replaced with PET in equal amounts, and the temperature in the third zone of the twin-screw extruder was set at 210, the temperature in the fourth zone was set at 235 ℃, the temperature in the fifth zone was set at 255 ℃, the temperature in the sixth zone was set at 225 ℃, and the remaining parameters were unchanged.

Comparative example 2

Comparative example 2 differs from example 1 in that the modifier was replaced with PA in equal amounts, and the temperature in the third zone of the twin-screw extruder was set to 200, the temperature in the fourth zone was set to 215 ℃, the temperature in the fifth zone was set to 235 ℃, the temperature in the sixth zone was set to 205 ℃, and the remaining parameters were unchanged.

Comparative example 3

Comparative example 3 differs from example 1 in that the equal amount of nanowhisker and silicone masterbatch was replaced with glass fiber.

Comparative example 4

Comparative example 4 differs from example 1 in that the toughening compatibilizer was replaced by a silicone masterbatch in equal amounts.

Comparative example 5

Comparative example 5 differs from example 1 in that the nanowhisker is replaced by a silicone masterbatch in equal amount.

Comparative example 6

Comparative example 6 differs from example 1 in that the silicone master batch was replaced with nanowhiskers in equal amounts.

Performance test

The recycled PP cutlery box material and recycled PP cutlery box material obtained in examples 1 to 19 and comparative examples 1 to 6 were injection molded into a plurality of test samples, and the following performance tests were performed.

Detection method/test method

Mechanical properties (one)

Notched impact strength is measured with reference to ASTM D256-2006;

Tensile elongation at yield is measured with reference to ASTM D-638;

Detecting for 3 times in the experiment, taking an average value, and reserving a decimal point;

TABLE 3 Experimental data for examples 1-19 and comparative examples 1-6

As can be seen from the combination of the example 1 and the comparative examples 1-3 and the Table 2, the notch impact strength and the elongation at break of the comparative examples 1-3 are lower than those of the example 1, which shows that the modifier consisting of the toughening compatilizer, the nano whisker and the silicone master batch is adopted to perform better blending modification, so that the impact strength and the elongation of the recycled materials of the PP cutlery box are better, and the carpet fiber produced by the recycled materials of the PP cutlery box has better flexibility and wear resistance.

As can be seen from the combination of the example 1 and the comparative examples 4-6 and the Table 2, the notched impact strength and the elongation at break of the comparative examples 4-6 are lower than those of the example 1, which shows that the toughening compatibility agent, the nano whisker and the silicone master batch are adopted for compounding to play a better role in toughening, so that the impact strength and the elongation of the recycled materials of the PP cutlery box are better, and the carpet fiber produced by the recycled materials of the PP cutlery box has better flexibility and wear resistance.

As can be seen from the combination of example 2 and example 6 and the combination of table 2, the notched impact strength and the elongation at break of example 2 are lower than those of example 6, which indicates that mullite whiskers, aluminum borate whiskers and SiC whiskers have better synergistic effect, so that the prepared carpet fiber has better toughness and reduced possibility of fracture, abrasion and the like.

(II) anti-fouling test:

Recycling the recycled materials of the PP cutlery boxes obtained in examples 1-19 and comparative examples 1-6, and carrying out melt spinning through a spinning device, wherein the melt spinning temperature is controlled at 230 ℃, so as to obtain carpet fibers;

And (3) passing the carpet fibers through a textile mechanism, and adopting a carpet textile process to obtain the carpet.

Wherein, the count is 3.5, the Z direction is 600 twists/m, the pile height is 10mm, the density is 90 knots/foot in each transverse and vertical direction, the carpet thickness is 15mm, the technical standard is national standard GB/T15050-94, the carpet weight is 3150 g/square meter, and the yarn weight is 2100 g/square meter;

First layer cloth bottom, pure cotton cloth bottom

Warp 10S/2 cotton yarn, 26 singles yarns per inch, weft 10S/2 cotton yarn, 26 singles yarns per inch, weight 3.3 pounds per yard.

The two-layer bottom pure cotton mesh has 12S/1 cotton yarns per inch of warp, 12S/2 cotton yarns per inch of weft, 5.5 yarns per inch, a weave leno weave, and a weight of about 0.3 lbs per yard.

Detecting the stain resistance of the carpet prepared by the method with reference to QB/T2999-2008, calculating the average color difference delta E between an original detection sample and a polluted detection sample, wherein the observation of the color is limited to the front surface of the carpet, and when the delta E is larger, the stain resistance is poorer;

The abrasion resistance tester for the RC149 carpet is used for detecting the abrasion resistance of the front surface of the carpet under the action of the running pressure of the pedal wheel 4 foot. The method meets the standards of QBT 2998-2008, wherein the linear speed of the pedal wheel is 0.28m/sec, the circumferential speed of the pedal wheel is 0.336m/sec, the secondary stroke performance is about 7min, the diameter of the pedal wheel is 225mm, the width of the pedal wheel is 55mm, the load of the pedal wheel is 15kg, the test slip is 18%, the test times are 20000 times and 50000 times respectively, and the surface abrasion degree is slightly, moderately and severely.

The above experiment results are shown in table 4;

TABLE 4 Experimental data for examples 1-19 and comparative examples 1-6

As can be seen from comparative examples 1 and comparative examples 1 to 6, the ΔE of comparative examples 1 to 6 is larger than that of example 1, and the abrasion degree is more serious than that of example 1 after abrasion test, which indicates that the modifier obtained by compounding the toughening compatilizer, nano whisker and silicone master batch has better abrasion resistance and anti-fouling property, thus reducing the possibility of abrasion and the like of carpets.

As can be seen from comparative examples 8 and 9, Δe of example 9 is smaller than Δe of example 1, and abrasion degree of example 9 is better than that of example 8, which indicates that silane-based anti-fouling compatilizer prepared by using 2-isopropyl-2-adamantyl methacrylate, tetraethylene glycol di-2-methacrylate, long-chain alkyl acrylate, silane-based acrylate monomer, initiator and solvent is compounded with maleic anhydride compatilizer, so that the toughening compatilizer has better toughening effect, anti-fouling effect and the like, and when compounded with nano whisker and silicone master batch, the obtained modifier carries out blending modification on recycled PP cutlery box material, thereby playing a role in better toughening and anti-fouling effects, reducing possibility of abrasion and pollution after the prepared carpet fiber is used for producing carpet, and improving durability and practicability of the carpet.

The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.

Claims

1. A PP lunch box recycled material for carpet fiber, characterized by comprising the following raw materials in parts by weight:

100 PP lunch box recycled materials

1-5 parts lubricant

1-10 parts plasticizer

0.2-2 parts of anti-aging agent

10-30 parts of modifier;

The modifier is composed of a toughening compatibilizer, nano whiskers, and silicone masterbatch in a weight ratio of 1: (2.25-3): (0.4-1);

The nano whiskers are composed of one or more of mullite whiskers, aluminum borate whiskers, and SiC whiskers;

The toughening compatibilizer is a maleic anhydride compatibilizer and/or a silane-based antifouling compatibilizer;

The maleic anhydride compatibilizer is maleic anhydride grafted POE and/or vinyl chloride-vinyl acetate-maleic anhydride terpolymer resin;

The silane-based antifouling compatibilizer is prepared from 2-isopropyl-2-adamantyl methacrylate, tetraethylene glycol di-2-methacrylate, long-chain alkyl acrylate, silane-based acrylate monomer, initiator, and solvent;

The long-chain alkyl acrylate is myristyl acrylate and/or oleyl methacrylate;

The silyl acrylate monomer is 3-(methacryloyloxy)propyltrimethoxysilane and/or 1,3-bis(3-methacryloyloxypropyl)tetrakis(trimethylsiloxy)disiloxane;

The modifier is prepared by the following method:

According to weight parts, weigh 0.1-0.5 parts of 2-isopropyl-2-adamantyl methacrylate, 0.2-0.8 parts of tetraethylene glycol di-2-methacrylate, 0.1-0.5 parts of long-chain alkyl acrylate, 1.1-1.7 parts of silyl acrylate monomer, 0.01-0.03 parts of initiator, and 1-3 parts of solvent, mix well, heat to 62-75°C, react for 2-3 hours, and neutralize to obtain a silyl anti-fouling compatibilizer;

Then add maleic anhydride compatibilizer and silane-based antifouling compatibilizer and stir evenly, then add nano whiskers and silicone masterbatch, continue stirring evenly, remove the solvent under reduced pressure, cool, and obtain a modifier.

2. The PP lunch box recycled material for carpet fibers according to claim 1, characterized in that the plasticizer is an environmentally friendly plasticizer, and the anti-aging agent is one or more of antioxidant 1010, antioxidant 1076, antioxidant 264, antioxidant 2246, antioxidant 168, UV770, UV-P, UV531, and UV-327.

3. A method for preparing PP lunch box recycled materials for carpet fibers according to claim 1 or 2, characterized in that it comprises the following steps:

Weigh the toughening compatibilizer, nanowhiskers, and silicone masterbatch in parts by weight and mix them evenly to obtain a modifier;

According to parts by weight, PP lunch box recycled material, lubricant, plasticizer, anti-aging agent and modifier are weighed and mixed evenly, extruded, cooled, dried and granulated to obtain PP lunch box recycled material.