CN104087140B - Children special-purpose environmental protection dull finishing coat with antibacterial functions and preparation method thereof - Google Patents
Children special-purpose environmental protection dull finishing coat with antibacterial functions and preparation method thereof Download PDFInfo
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- CN104087140B CN104087140B CN201410292777.XA CN201410292777A CN104087140B CN 104087140 B CN104087140 B CN 104087140B CN 201410292777 A CN201410292777 A CN 201410292777A CN 104087140 B CN104087140 B CN 104087140B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 28
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- 230000007613 environmental effect Effects 0.000 title claims abstract description 8
- 230000006870 function Effects 0.000 title abstract description 14
- 239000003973 paint Substances 0.000 claims abstract description 80
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 41
- 239000012046 mixed solvent Substances 0.000 claims abstract description 20
- -1 aldehyde ketone Chemical class 0.000 claims abstract description 18
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- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 30
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 26
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 24
- 239000003085 diluting agent Substances 0.000 claims description 22
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 claims description 22
- 229920001228 polyisocyanate Polymers 0.000 claims description 22
- 239000005056 polyisocyanate Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 18
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- 238000004806 packaging method and process Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 14
- 125000001931 aliphatic group Chemical group 0.000 claims description 11
- 125000003118 aryl group Chemical group 0.000 claims description 11
- 239000013638 trimer Substances 0.000 claims description 10
- 150000002148 esters Chemical class 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 235000019864 coconut oil Nutrition 0.000 claims description 8
- 239000003240 coconut oil Substances 0.000 claims description 8
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 8
- 239000000194 fatty acid Substances 0.000 claims description 8
- 229930195729 fatty acid Natural products 0.000 claims description 8
- 150000004665 fatty acids Chemical class 0.000 claims description 8
- 150000004702 methyl esters Chemical class 0.000 claims description 8
- 229920000058 polyacrylate Polymers 0.000 claims description 8
- QYMFNZIUDRQRSA-UHFFFAOYSA-N dimethyl butanedioate;dimethyl hexanedioate;dimethyl pentanedioate Chemical compound COC(=O)CCC(=O)OC.COC(=O)CCCC(=O)OC.COC(=O)CCCCC(=O)OC QYMFNZIUDRQRSA-UHFFFAOYSA-N 0.000 claims description 7
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 6
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 230000008033 biological extinction Effects 0.000 claims description 2
- 239000006224 matting agent Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 13
- 238000000576 coating method Methods 0.000 abstract description 13
- 230000036541 health Effects 0.000 abstract description 11
- 239000002023 wood Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 3
- 235000013162 Cocos nucifera Nutrition 0.000 abstract 1
- 244000060011 Cocos nucifera Species 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 238000007665 sagging Methods 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
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- 241000894006 Bacteria Species 0.000 description 4
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- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
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- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention is more particularly directed to a kind of children special-purpose environmental protection dull finishing coat and preparation method thereof with antibacterial functions.The mian paint of the paint is formulated by following raw material by following weight proportion：10 30 parts of aldehyde ketone resin solution, 0.1 1 parts of antifoaming agent, 0.5 2 parts of levelling agent, 0.2 1 parts of wetting agent, 19 parts of delustering agent, 0.5 2 parts of wax powder, 0.5 1 parts of high oxidation state nano-silver ionic solution, 0.1 0.3 parts of drier, environmentally friendly 5 15 parts of the mixed solvent of 40 70 parts of synthctic fat acid resin, 10 20 parts of coconut alkyd resin, solid content 60% 80%；The paint not only environment protection health avoids generating the harmful substance of children's torso health, and can form the functional coating of antibacterial in coated article surface energy after application, prevent secondary pollution；In addition, the paint can also be directly used on solid wood base material, it not will produce paint film and shrink sagging phenomenon, and hardness and the performances such as wear-resisting are all good.
Description
Technical Field
The invention relates to an environment-friendly finish paint with an antibacterial function special for children and a preparation method thereof, in particular to an environment-friendly matte finish paint with an antibacterial function special for children and a preparation method thereof.
Background
The technical regulation of ' universal technical conditions for children ' furniture ' is formally implemented in China in 8 months in 2012, which is the special furniture industrial regulation for children to leave the platform for the first time in China. On this basis, the paint used as an important component of furniture is the first to come, and the requirements including properties and some special effects make it necessary to develop special paint for children's furniture specialties. According to the statistics of the international organization, indoor air pollutants harmful to health are found in 30% of newly built and rebuilt buildings in the world, and 68% of diseases are caused by indoor air pollution. Every year, 10 million people worldwide die from asthma, aplastic anemia, leukemia due to indoor air pollution, and 35% of them are children. In the prior art, formaldehyde, benzene, VOC (volatile organic compounds) and free TDI (free toluene diisocyanate) generated from furniture coating paint are main pollutants thereof. In addition, due to the fact that the furniture is used for a long time, the cleaning degree is not thorough and the environment is affected, a large number of pathogenic bacteria are bred on the surface of the furniture, especially children with weak immunity are prone to symptoms such as headache, fever and rhinorrhea and cold caused by bacterial infection, and the body health of the children is seriously affected. In addition, the existing environment-friendly coating has great limitations in application, such as obvious defects in the aspects of hardness, hand feeling, wear resistance and the like; and generally, the paint can only be used on solid-color base materials, and if the paint is used on the solid-color base materials, the phenomenon that a paint film shrinks, sinks and loses gloss can be generated after a certain time because the wood grain conduits of the solid-color base materials are relatively deep.
Disclosure of Invention
The invention aims to provide the special environment-friendly matte finish paint with the antibacterial function for children, which is used for solving the problems in the prior art, is environment-friendly and healthy, avoids the generation of substances harmful to the health of children, can form an antibacterial functional coating on the surface of a coated object after coating, avoids secondary pollution and protects the health of children; in addition, the paint can be directly used on a solid wood substrate, the phenomenon that a paint film shrinks and sinks can not be generated, and the performances such as hardness and wear resistance are good.
The invention also aims to provide a preparation method of the special environment-friendly matte finishing paint for children.
The invention provides an environment-friendly matte finish paint with an antibacterial function special for children, which is prepared from a main paint, a curing agent and a diluent in a weight ratio of 0.8-1.2:0.8-1.2: 0.2-0.4; wherein,
the main paint is prepared from the following raw materials in parts by weight:
the environment-friendly mixed solvent is prepared by mixing butyl acetate, propylene glycol methyl ether acetate and dibasic acid ester according to the following weight ratio: 4-6 parts of butyl acetate, 4-5 parts of propylene glycol methyl ether acetate and 1-3 parts of dibasic ester;
the curing agent is prepared from the following raw materials in parts by weight:
40-70 parts of aliphatic polyisocyanate with the average molecular weight of 168-260, 20-40 parts of aromatic polyisocyanate trimer based on Toluene Diisocyanate (TDI), 15-30 parts of dehydrated butyl acetate and 5-10 parts of propylene glycol monomethyl ether acetate;
the mass percentage concentration of the aliphatic polyisocyanate with the average molecular weight of 168-260 is 40-50 percent, and the mass percentage concentration of the aromatic polyisocyanate trimer based on the Toluene Diisocyanate (TDI) is 60-75 percent;
the diluent is prepared from the following raw materials in parts by weight: 50-80 parts of butyl acetate; 15-25 parts of propylene glycol methyl ether acetate; 5-10 parts of dibasic ester; 1-10 parts of mixed acid methyl ester;
the defoaming agent is a special polyurethane defoaming agent which mainly comprises a foam breaking polymer and a siloxane solution;
the matting agent adopts matting powder of which the main component is silicon dioxide with the average fineness of 4 mu m
The wax powder adopts the wax powder which mainly comprises polyethylene and polytetrafluoroethylene wax, wherein D99/mum is less than or equal to 10, and D50/mum is less than or equal to 7;
the leveling agent adopts a leveling agent mainly comprising polyacrylate copolymer and fluorocarbon modified polyacrylate;
the wetting agent is a wetting agent of which the main component is polyether modified dimethyl siloxane copolymer solution;
the drier adopts a drier with the main components of organic ammonium and organic tin compound solution.
Further, the special polyurethane defoaming agent with the main components of the foam breaking polymer and the siloxane solution adopts BYK-066N of BAYER company;
the extinction powder of which the main component is silicon dioxide with the average fineness of 4 mu m adopts ED-2 of GRACE company;
the main components are polyethylene and polytetrafluoroethylene wax, and the wax powder with D99/mum being less than or equal to 10 and D50/mum being less than or equal to 7 adopts BYK-996 of BYK company;
the leveling agent mainly comprising the polyacrylate copolymer and the fluorocarbon modified polyacrylate adopts glide450 of degussa.tego company;
the main component is wetting agent of polyether modified dimethyl siloxane copolymer solution, BYK-333 of BAYER company is adopted;
the drier mainly comprising organic ammonium and organic tin compound solution is prepared by mixing dibutyltin dilaurate and butyl acetate according to the weight ratio of 0.08-0.12: 0.08-0.12;
the high oxidation state nano silver ion solution is the high oxidation state nano silver ion solution with silver ion concentration of more than 10000ppm and particle size of less than or equal to 0.5 nm.
The combination of the components and the weight proportion of the components are determined by a large number of tests, and the combination and the weight proportion ensure that the surface of a coating formed by the special environment-friendly matte finishing coat with the antibacterial function for children has excellent balance of antibacterial performance, environment-friendly performance and other technical performance.
The method for preparing the special environment-friendly matte finishing paint with the antibacterial function for children comprises the following steps:
the main paint is prepared according to the following preparation method: after 40-70 parts of synthetic fatty acid resin, 10-20 parts of coconut oil modified alkyd resin, 10-30 parts of aldehyde ketone resin solution with solid content of 60-80%, 0.2-1 part of wetting agent and 3-10 parts of environment-friendly mixed solvent are mixed, the mixture is dispersed for 8-10 minutes at the speed of 600-800 r/min; adding 1-9 parts of flatting agent and 0.5-2 parts of wax powder while dispersing, and dispersing for 10-15 minutes at the speed of 1200-1500 rpm until the fineness is less than or equal to 25 um; then 0.1-1 part of defoaming agent, 0.5-2 parts of flatting agent, 0.5-1 part of high oxidation state nano silver ion solution, 0.1-0.3 part of drier and 2-5 parts of environment-friendly mixed solvent are added while dispersing; then dispersing for 10-15 minutes at the speed of 800-1000 rpm until the paint liquid is uniform;
the curing agent is prepared according to the following preparation method: 40-70 parts of aliphatic polyisocyanate with the average molecular weight of 168-260 and the mass percentage concentration of 40-50%, 20-40 parts of aromatic polyisocyanate trimer based on Toluene Diisocyanate (TDI), 15-30 parts of dehydrated butyl acetate and 5-10 parts of propylene glycol monomethyl ether acetate are mixed and then dispersed for 10-15 minutes at the speed of 800-1000 rpm until the mixed liquid is uniform;
the diluent is prepared according to the following preparation method: 50-80 parts of butyl acetate, 15-25 parts of propylene glycol methyl ether acetate, 5-10 parts of dibasic acid ester and 1-10 parts of mixed acid methyl ester are mixed and dispersed for 10-15 minutes at the speed of 500-1000 rpm until the mixed liquid is uniform.
And after the preparation of the main paint is finished, a 400-plus 600-mesh filter screen is used for filtering and packaging, after the preparation of the diluent is finished, a 800-plus 1000-mesh filter screen is used for filtering and packaging, and after the preparation of the curing agent is finished, a 800-plus 1000-mesh filter screen is used for filtering and packaging.
The invention is a finish paint developed for the furniture specially used for children in the current furniture market, various material combinations are screened out from the most advanced and latest chemical raw materials in the world through a large amount of experiments, the components and the mass ratio thereof are determined by adopting a multi-factor experiment design method and an orthogonal experiment design method, and compared with the prior art, the finish paint adopting the formula has the following advantages:
1) the synthetic fatty acid resin, the coconut oil modified alkyd resin, the aldehyde ketone resin, the wax powder and the flatting agent in the formula adopt the most appropriate proportion, have good gloss and color retention performance, are not easy to yellow, have stable gloss and high cost performance, meet the requirements of environmental protection and health, can be directly used on a solid wood substrate, do not generate the phenomenon of paint film shrinkage and sinking, and have the characteristics of good construction performance, difficult foaming of thick coating, strong adhesion with a primer, high fullness, high transparency, good hand feeling and the like; the coating has better coating quality, good wear resistance and scratch resistance and better performance by matching with aliphatic polyisocyanate with the average molecular weight of 168-260 and aromatic polyisocyanate tripolymer based on Toluene Diisocyanate (TDI) in the curing agent.
2) The paint film after complete crosslinking and curing has high hardness, weather resistance and wear resistance, and the paint film has low residual smell after drying, thereby being suitable for household environment.
3) The color paste has good compatibility with color paste, can be prepared into any bright color, increases the sense pleasure degree and is suitable for the aesthetic perception of children.
4) The silver ion bactericidal coating of the high oxidation state active complex can be formed on the surface of the coating, so that harmful bacteria can be effectively killed, the coating is non-toxic and harmless, and the health of children is protected. The silver ion compound of the high oxidation state active complex compound synthesized by the most advanced technology in the world has strong sterilization capability, high efficiency and long duration, can kill more than 90 percent of harmful bacteria on a coated object, and has the sterilization effective period of more than 3 to 5 years.
5) The most advanced auxiliary agents such as the antifoaming agent, the flatting agent, the wetting agent and the like in the world are adopted, and the production and construction requirements of the PU transparent clear finish are met.
6) The adopted environment-friendly solvent has low toxicity, little smell and no toxicity, can be completely biodegraded, has no benzene absolutely, and has VOC (volatile organic compounds) content meeting the health requirement.
7) The curing agent comprises the following components: the content of TDI (free toluene diisocyanate) as a curing agent is less than 0.2 percent, reaches the European Union standard and is higher than the national GB18581-2009 industrial standard.
Detailed Description
The invention is further illustrated by the following examples:
in the following examples, the experimental results were tested according to the GB/T23997-2009 and GB18581-2009 standards and the paint shrinkage was tested over time after the paint film had completely dried.
Example 1
Preparation method of main paint
The main paint is prepared by the following steps:
(1) mixing butyl acetate, propylene glycol methyl ether acetate and dibasic ester according to the weight ratio of 50:45:20 to form an environment-friendly mixed solvent;
(2) mixing dibutyltin dilaurate and butyl acetate according to the weight ratio of 1:1 to form a drier;
(3) after 57 parts of synthetic fatty acid resin, 20 parts of coconut oil modified alkyd resin, 12 parts of aldehyde ketone resin solution with solid content of 70% and 3 parts of environment-friendly mixed solvent are mixed, dispersing for 9 minutes at the speed of 700 r/min; while dispersing, adding 0.5 part by weight of BYK-996 and 1 part by weight of ED-2, dispersing for 15 minutes at the speed of 1500 revolutions per minute until the fineness is less than or equal to 25um, and then sequentially adding 0.5 part by weight of BYK-066N, 1.2 parts by weight of glide450, 0.5 part by weight of BYK-333, 0.5 part by weight of high oxidation state nano silver ion solution, 0.1 part by weight of drier and 3.7 parts by weight of environment-friendly mixed solvent; then dispersing for 10 minutes at the speed of 900 revolutions per minute until the paint liquid is uniform;
(4) and filtering and packaging the main paint by using a 500-mesh filter screen after the main paint is prepared.
Preparation method of curing agent
The curing agent is prepared by the following steps:
(1) 55 parts of aliphatic polyisocyanate with the average molecular weight of 168-260 and the mass percentage concentration of 40 percent, 28 parts of aromatic polyisocyanate trimer based on Toluene Diisocyanate (TDI) and the mass percentage concentration of 60 percent, 12 parts of dehydrated butyl acetate and 5 parts of propylene glycol monomethyl ether acetate are mixed and then dispersed for 12 minutes at the speed of 900 revolutions per minute until the mixed liquid is uniform;
(2) filtering and packaging with 900 mesh filter screen after the curing agent is prepared.
Process for preparing diluent
The diluent is prepared by the following steps:
(1) 72 parts of butyl acetate, 18 parts of propylene glycol methyl ether acetate, 6 parts of dibasic acid ester and 4 parts of mixed methyl ester are mixed and dispersed for 12 minutes at the speed of 750 revolutions per minute until the mixed liquid is uniform;
(2) filtering and packaging with 900 mesh filter screen after the diluent is prepared.
EXAMPLE 2 (preferred embodiment)
Preparation method of main paint
The main paint is prepared by the following steps:
(1) mixing butyl acetate, propylene glycol methyl ether acetate and dibasic ester according to the weight ratio of 50:45:20 to form an environment-friendly mixed solvent;
(2) mixing dibutyltin dilaurate and butyl acetate according to the weight ratio of 1:1 to form a drier;
(3) mixing 56.2 parts of synthetic fatty acid resin, 10 parts of coconut oil modified alkyd resin, 13 parts of aldehyde ketone resin solution with solid content of 70% and 6 parts of environment-friendly mixed solvent, and dispersing for 9 minutes at the speed of 700 revolutions per minute; adding 2 parts by weight of BYK-996 and 4.5 parts by weight of ED-2 while dispersing, dispersing for 15 minutes at the speed of 1500 revolutions per minute until the fineness is less than or equal to 25um, and then sequentially adding 0.5 part by weight of BYK-066N, 1 part by weight of glide450, 0.8 part by weight of BYK-333, 1 part by weight of high-oxidation state nano silver ion solution, 0.2 part by weight of drier and 4.8 parts by weight of environment-friendly mixed solvent; then dispersing for 10 minutes at the speed of 900 revolutions per minute until the paint liquid is uniform;
(4) and filtering and packaging the main paint by using a 500-mesh filter screen after the main paint is prepared.
Preparation method of curing agent
The curing agent is prepared by the following steps:
(1) 40 parts of aliphatic polyisocyanate with the average molecular weight of 168-260 and the mass percentage concentration of 50 percent, 30 parts of aromatic polyisocyanate trimer based on Toluene Diisocyanate (TDI) and the mass percentage concentration of 75 percent, 22 parts of dehydrated butyl acetate and 8 parts of propylene glycol monomethyl ether acetate are mixed and then dispersed for 12 minutes at the speed of 900 revolutions per minute until the mixed liquid is uniform;
(2) filtering and packaging with 900 mesh filter screen after the curing agent is prepared.
Process for preparing diluent
The diluent is prepared by the following steps:
(1) 72 parts of butyl acetate, 18 parts of propylene glycol methyl ether acetate, 6 parts of dibasic acid ester and 4 parts of mixed methyl ester are mixed and dispersed for 12 minutes at the speed of 750 revolutions per minute until the mixed liquid is uniform;
(2) filtering and packaging with 900 mesh filter screen after the diluent is prepared.
Example 3
Preparation method of main paint
The main paint is prepared by the following steps:
(1) mixing butyl acetate, propylene glycol methyl ether acetate and dibasic acid ester according to the weight ratio of 10:9:4 to form an environment-friendly mixed solvent;
(2) mixing dibutyltin dilaurate and butyl acetate according to the weight ratio of 1:1 to form a drier;
(3) after 48 parts of synthetic fatty acid resin, 15 parts of coconut oil modified alkyd resin, 15 parts of aldehyde ketone resin solution with solid content of 70% and 7 parts of environment-friendly mixed solvent are mixed, dispersing for 9 minutes at the speed of 700 r/min; while dispersing, adding 1 part of BYK-996 and 6.5 parts of ED-2, dispersing for 15 minutes at the speed of 1500 revolutions per minute until the fineness is less than or equal to 25um, and then sequentially adding 1 part of BYK-066N, 1.5 parts of glide450, 0.5 part of BYK-333, 1 part of high-oxidation state nano silver ion solution, 0.1 part of drier and 3.4 parts of environment-friendly mixed solvent; then dispersing for 10 minutes at the speed of 900 revolutions per minute until the paint liquid is uniform;
(4) and filtering and packaging the main paint by using a 500-mesh filter screen after the main paint is prepared.
Preparation method of curing agent
The curing agent is prepared by the following steps:
(1) 50 parts of aliphatic polyisocyanate with the average molecular weight of 168-260 and the mass percentage concentration of 40 percent, 25 parts of aromatic polyisocyanate trimer based on Toluene Diisocyanate (TDI) and the mass percentage concentration of 75 percent, 20 parts of dehydrated butyl acetate and 5 parts of propylene glycol monomethyl ether acetate are mixed and then dispersed for 12 minutes at the speed of 900 revolutions per minute until the mixed liquid is uniform;
(2) filtering and packaging with 900 mesh filter screen after the curing agent is prepared.
Process for preparing diluent
The diluent is prepared by the following steps:
(1) 72 parts of butyl acetate, 18 parts of propylene glycol methyl ether acetate, 6 parts of dibasic acid ester and 4 parts of mixed methyl ester are mixed and dispersed for 12 minutes at the speed of 750 revolutions per minute until the mixed liquid is uniform;
(2) filtering and packaging with 900 mesh filter screen after the diluent is prepared.
Example 4
Preparation method of main paint
The main paint is prepared by the following steps:
(1) mixing butyl acetate, propylene glycol methyl ether acetate and dibasic acid ester according to the weight ratio of 4:4:1 to form an environment-friendly mixed solvent;
(2) mixing dibutyltin dilaurate and butyl acetate according to the weight ratio of 1.2:0.8 to form a drier;
(3) mixing 51 parts of synthetic fatty acid resin, 10 parts of coconut oil modified alkyd resin, 10 parts of aldehyde ketone resin solution with solid content of 70% and 10 parts of environment-friendly mixed solvent, and dispersing for 9 minutes at the speed of 700 revolutions per minute; while dispersing, adding 1 part of BYK-996 and 9 parts of ED-2, dispersing for 15 minutes at the speed of 1500 revolutions per minute until the fineness is less than or equal to 25um, and then sequentially adding 0.5 part of BYK-066N, 1 part of glide450, 1 part of BYK-333, 1 part of high oxidation state nano silver ion solution, 0.1 part of drier and 5.4 parts of environment-friendly mixed solvent; then dispersing for 10 minutes at the speed of 900 revolutions per minute until the paint liquid is uniform;
(4) and filtering and packaging the main paint by using a 400-mesh filter screen after the main paint is prepared.
Preparation method of curing agent
The curing agent is prepared by the following steps:
(1) 40 parts of aliphatic polyisocyanate with the average molecular weight of 168-260 and the mass percentage concentration of 50 percent, 35 parts of aromatic polyisocyanate trimer based on Toluene Diisocyanate (TDI) and the mass percentage concentration of 60 percent, 15 parts of dehydrated butyl acetate and 10 parts of propylene glycol monomethyl ether acetate are mixed and then dispersed for 12 minutes at the speed of 900 revolutions per minute until the mixed liquid is uniform;
(2) and filtering and packaging the curing agent by using a 800-mesh filter screen after the curing agent is prepared.
Process for preparing diluent
The diluent is prepared by the following steps:
(1) 50 parts of butyl acetate, 15 parts of propylene glycol methyl ether acetate, 5 parts of dibasic ester and 1 part of mixed methyl ester are mixed and dispersed for 10 minutes at the speed of 500 revolutions per minute until the mixed liquid is uniform;
(2) and filtering and packaging the diluent by using a 800-mesh filter screen after the diluent is prepared. Through the tests of the embodiments, the technical performance data, the environmental protection data, the antibacterial data and the test results of the coating on the solid wood substrate of the special environment-friendly matte finishing paint with the antibacterial function for children are shown in the following tables:
TABLE I-Performance index of environmental protection matte cabinet paint with self-sterilization function special for children
As is apparent from the table I, all the properties of the invention reach or are higher than the national standard, and particularly, the hardness and the wear resistance of a paint film are good.
TABLE II-technical requirement of the environmental protection matte cabinet paint with self-sterilization function special for children
Curing agent component
Diluent component
| Item | Technical requirements | Example 1 | Example 2 | Example 3 | Example 4 |
| Benzene content | ≤0.1％ | Conform to | Conform to | Conform to | Conform to |
| Appearance of the product | Clear and transparent | Conform to | Conform to | Conform to | Conform to |
| Toluene and xylene contents | ≤0.1％ | Conform to | Conform to | Conform to | Conform to |
| Dissolving power | High strength | Conform to | Conform to | Conform to | Conform to |
The second technical requirement shows that the VOC (volatile organic compound) content and the TDI (free Toluene Diisocyanate (TDI)) content reach or are superior to the GB18581-2009 standard, the requirements of environmental protection and health are met, and the use is safe and reliable.
Table three-antibacterial experimental data of the child-specific environment-friendly matte cabinet paint with self-sterilization function:
as is apparent from the third table, the embodiment of the invention can quickly kill the harmful bacteria, continuously inhibit the growth of the harmful bacteria and protect the health of children.
TABLE IV-experimental data of sag resistance of children's specialized eco-friendly matte cabinet paint with self-sterilization function coated on solid wood substrate
The test method comprises the following steps: coating test is carried out on the pipe (the fraxinus mandshurica base material) with equal depth under the same experimental condition, and the shrinkage rate of the paint film is respectively tested 1 week and 1 month after the paint film is completely dried.
As is apparent from the table IV, the sag resistance of each embodiment of the invention reaches or is better than the value specified by the technical requirements, and the shrinkage rate of the paint film 1 week to 1 month after the paint film is completely dried meets the specific requirement of sag resistance, so that the paint film can be directly used on a solid wood substrate.
The above embodiments are merely to explain the technical solutions of the present invention in detail, and the present invention is not limited to the above embodiments, and it should be understood by those skilled in the art that all modifications and substitutions based on the above principles and spirit of the present invention should be within the protection scope of the present invention.
Claims (8)
1. The utility model provides a special environmental protection matt finish paint of children with antibacterial function which characterized in that: it is prepared by main paint, curing agent and diluent according to the weight ratio of 0.8-1.2:0.8-1.2: 0.2-0.4; wherein,
the main paint is prepared from the following raw materials in parts by weight:
40-70 parts of synthetic fatty acid resin
10-20 parts of coconut oil modified alkyd resin
10-30 parts of aldehyde ketone resin solution with solid content of 60-80%
0.1 to 1 portion of defoaming agent
0.5-2 parts of flatting agent
0.2 to 1 portion of wetting agent
1-9 parts of flatting agent
0.5-2 parts of wax powder
0.5-1 part of high oxidation state nano silver ion solution
0.1 to 0.3 portion of drier
5-15 parts of an environment-friendly mixed solvent,
the environment-friendly mixed solvent is prepared by mixing butyl acetate, propylene glycol methyl ether acetate and dibasic acid ester according to the following weight ratio: 4-6 parts of butyl acetate, 4-5 parts of propylene glycol methyl ether acetate and 1-3 parts of dibasic ester; the matting agent adopts matting powder of which the main component is silicon dioxide with the average fineness of 4 mu m; the wax powder adopts the wax powder which mainly comprises polyethylene and polytetrafluoroethylene wax, wherein D99/mum is less than or equal to 10, and D50/mum is less than or equal to 7;
the drier is prepared by mixing dibutyltin dilaurate and butyl acetate according to the weight ratio of 0.08-0.12: 0.08-0.12;
the curing agent is prepared from the following raw materials in parts by weight:
40-70 parts of aliphatic polyisocyanate with the average molecular weight of 168-260, 20-40 parts of aromatic polyisocyanate trimer based on toluene diisocyanate, 15-30 parts of dehydrated butyl acetate and 5-10 parts of propylene glycol methyl ether acetate;
the mass percentage concentration of the aliphatic polyisocyanate with the average molecular weight of 168-260 is 40-50 percent, and the mass percentage concentration of the aromatic polyisocyanate trimer based on the toluene diisocyanate is 60-75 percent;
the diluent is prepared from the following raw materials in parts by weight: 50-80 parts of butyl acetate, 15-25 parts of propylene glycol methyl ether acetate, 5-10 parts of dibasic ester and 1-10 parts of mixed acid methyl ester.
2. The environment-friendly matte finishing paint with antibacterial function for children according to claim 1, wherein the finishing paint comprises the following components in parts by weight:
the defoaming agent is a special polyurethane defoaming agent which mainly comprises a foam breaking polymer and a siloxane solution;
the leveling agent adopts a leveling agent mainly comprising polyacrylate copolymer and fluorocarbon modified polyacrylate;
the wetting agent is a wetting agent of which the main component is polyether modified dimethyl siloxane copolymer solution.
3. The environment-friendly matte finishing paint with antibacterial function for children according to claim 2, wherein the finishing paint comprises the following components in parts by weight:
the special polyurethane defoaming agent mainly comprising the foam breaking polymer and the siloxane solution adopts BYK-066N of BAYER company;
the extinction powder of which the main component is silicon dioxide with the average fineness of 4 mu m adopts ED-2 of GRACE company;
the main components are polyethylene and polytetrafluoroethylene wax, and BYK-996 of BYK company is adopted as the wax powder with D99/mum being less than or equal to 10 and D50/mum being less than or equal to 7.
4. The environment-friendly matte finishing paint with antibacterial function for children according to claim 2, wherein the finishing paint comprises the following components in parts by weight: the leveling agent mainly comprising the polyacrylate copolymer and the fluorocarbon modified polyacrylate adopts glide450 of degussa.
5. The environment-friendly matte finishing paint with antibacterial function for children according to claim 2, wherein the finishing paint comprises the following components in parts by weight: the wetting agent of which the main component is polyether modified dimethyl siloxane copolymer solution adopts BYK-333 of BAYER company.
6. The environment-friendly matte finishing paint with antibacterial function for children according to claim 1, wherein the finishing paint comprises the following components in parts by weight: the high oxidation state nano silver ion solution is the high oxidation state nano silver ion solution with silver ion concentration of more than 10000ppm and particle size of less than or equal to 0.5 nm.
7. A preparation method for preparing the antibacterial children special environment-friendly matte finishing paint with the antibacterial function, which is characterized by comprising the following steps of:
the main paint is prepared according to the following preparation method: mixing 40-70 parts of synthetic fatty acid resin, 10-20 parts of coconut oil modified alkyd resin, 10-30 parts of aldehyde ketone resin solution with solid content of 60-80% and 3-10 parts of environment-friendly mixed solvent, and dispersing for 8-10 minutes at the speed of 600-800 rpm; adding 1-9 parts of flatting agent and 0.5-2 parts of wax powder while dispersing, and dispersing for 10-15 minutes at the speed of 1200-1500 rpm until the fineness is less than or equal to 25 um; then adding 0.1-1 part of defoaming agent, 0.5-2 parts of flatting agent, 0.2-1 part of wetting agent, 0.5-1 part of high oxidation state nano silver ion solution, 0.1-0.3 part of drier and 2-5 parts of environment-friendly mixed solvent while dispersing; then dispersing for 10-15 minutes at the speed of 800-1000 rpm until the paint liquid is uniform;
the curing agent is prepared according to the following preparation method: 40-70 parts of aliphatic polyisocyanate with the average molecular weight of 168-260, 20-40 parts of aromatic polyisocyanate trimer based on toluene diisocyanate, 15-30 parts of dehydrated butyl acetate and 5-10 parts of propylene glycol monomethyl ether acetate are mixed and then dispersed for 10-15 minutes at the speed of 800-1000 revolutions per minute until the mixed liquid is uniform;
the diluent is prepared according to the following preparation method: 50-80 parts of butyl acetate, 15-25 parts of propylene glycol methyl ether acetate, 5-10 parts of dibasic acid ester and 1-10 parts of mixed acid methyl ester are mixed and dispersed for 10-15 minutes at the speed of 500-1000 rpm until the mixed liquid is uniform.
8. The preparation method of the antibacterial environmentally-friendly matte finish paint special for children according to claim 7, characterized by comprising the following steps: and after the preparation of the main paint is finished, a 400-plus 600-mesh filter screen is used for filtering and packaging, after the preparation of the diluent is finished, a 800-plus 1000-mesh filter screen is used for filtering and packaging, and after the preparation of the curing agent is finished, a 800-plus 1000-mesh filter screen is used for filtering and packaging.
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| CN104592873A (en) * | 2014-12-30 | 2015-05-06 | 英德市雅家涂料有限公司 | Miliaria-preventing transparent PU priming paint and manufacturing process thereof |
| CN104559707A (en) * | 2015-01-20 | 2015-04-29 | 芜湖县双宝建材有限公司 | High-adhesion high-performance corrosion-resistant decontaminable paint |
| CN105062352A (en) * | 2015-08-28 | 2015-11-18 | 三棵树涂料股份有限公司 | Environmentally friendly poly urethane (PU) transparent matt finish paint and preparation method thereof |
| CN107344165B (en) * | 2017-06-29 | 2021-03-02 | 濮阳展辰新材料有限公司 | Coating method of technical wood |
| CN114214844A (en) * | 2021-12-21 | 2022-03-22 | 深圳市光科全息技术有限公司 | A kind of composition and its antibacterial layer and antibacterial screen |
| CN117247732A (en) * | 2023-08-21 | 2023-12-19 | 紫荆花涂料（上海）有限公司 | A kind of polyurethane bright varnish and its preparation method and application |
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| US5955063A (en) * | 1997-01-03 | 1999-09-21 | Brody; Donald E. | Water-based fingernail coating |
| CN102757715A (en) * | 2011-04-28 | 2012-10-31 | 广东华兹卜化学工业有限公司 | An anti-scratch nano-silver aldehyde-removing children's wood varnish |
| CN103483999A (en) * | 2013-08-20 | 2014-01-01 | 三棵树涂料股份有限公司 | Special environment-friendly bright finishing coat with anti-bacterial function for children as well as preparation method thereof |
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| US5955063A (en) * | 1997-01-03 | 1999-09-21 | Brody; Donald E. | Water-based fingernail coating |
| CN102757715A (en) * | 2011-04-28 | 2012-10-31 | 广东华兹卜化学工业有限公司 | An anti-scratch nano-silver aldehyde-removing children's wood varnish |
| CN103483999A (en) * | 2013-08-20 | 2014-01-01 | 三棵树涂料股份有限公司 | Special environment-friendly bright finishing coat with anti-bacterial function for children as well as preparation method thereof |
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