CN107011778B - Antibacterial water paint for plastic toys - Google Patents
Antibacterial water paint for plastic toys Download PDFInfo
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- CN107011778B CN107011778B CN201710150632.XA CN201710150632A CN107011778B CN 107011778 B CN107011778 B CN 107011778B CN 201710150632 A CN201710150632 A CN 201710150632A CN 107011778 B CN107011778 B CN 107011778B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000003973 paint Substances 0.000 title claims abstract description 36
- 229920003023 plastic Polymers 0.000 title claims abstract description 36
- 239000004033 plastic Substances 0.000 title claims abstract description 36
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 33
- 239000012948 isocyanate Substances 0.000 claims description 32
- 150000002513 isocyanates Chemical class 0.000 claims description 32
- 229920002635 polyurethane Polymers 0.000 claims description 31
- 239000004814 polyurethane Substances 0.000 claims description 31
- 239000003242 anti bacterial agent Substances 0.000 claims description 30
- 239000006184 cosolvent Substances 0.000 claims description 28
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 21
- 229920005749 polyurethane resin Polymers 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 239000002562 thickening agent Substances 0.000 claims description 15
- 239000000080 wetting agent Substances 0.000 claims description 15
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 12
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 230000003472 neutralizing effect Effects 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000013530 defoamer Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000007865 diluting Methods 0.000 claims description 5
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 4
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 4
- 229960002887 deanol Drugs 0.000 claims description 4
- 239000012972 dimethylethanolamine Substances 0.000 claims description 4
- 239000003899 bactericide agent Substances 0.000 claims description 3
- 238000011012 sanitization Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 description 17
- 239000000243 solution Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 10
- 241001506371 Kadsura Species 0.000 description 6
- UYAAVKFHBMJOJZ-UHFFFAOYSA-N diimidazo[1,3-b:1',3'-e]pyrazine-5,10-dione Chemical group O=C1C2=CN=CN2C(=O)C2=CN=CN12 UYAAVKFHBMJOJZ-UHFFFAOYSA-N 0.000 description 6
- 229940116423 propylene glycol diacetate Drugs 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000004599 antimicrobial Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 241000233805 Phoenix Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention relates to the technical field of coatings, in particular to the technical field of water-based coatings, and particularly discloses an antibacterial plastic toy water paint.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to the technical field of water-based coatings.
Background
China is a big toy export country, plastic toys occupy a large share of the market, the plastic toys are mainly coated by solvent-based coatings at present, the water-based plastic toy coatings account for a small share, and the water-based toy coatings with the functions of antibiosis, high wear resistance and the like are the phoenix hair unicorn.
The solvent-based paint contains high content of Volatile Organic Compounds (VOC), so that the problems of air pollution, flammability, potential safety hazard, poor environmental protection and the like exist in use, and the water-based plastic toy paint is a necessary trend in the future to replace the solvent-based paint.
However, the following problems still exist in the further application of the water-based plastic toy coating:
1. the plastic toy has more types of base materials, covers various base materials such as ABS, PS, HIPS, PET, PVC and the like, has mature solvent-based technology, needs to be improved in the adhesive force of the water-based paint, and needs to be researched more;
2. the plastic toy requires that the limit of harmful substances such as heavy metal and the like must meet the specific requirements of the state or imported countries such as European Union, United states and the like, so the water-based paint has certain limitations in the aspects of improving the performance, increasing the antibacterial function and the like;
3. the overall physical and chemical performance index of the water-based paint is different from that of the solvent.
Disclosure of Invention
The invention aims to solve the technical problem of providing the antibacterial plastic toy water paint, which has the physical and chemical properties reaching the standards of solvent type products, good adhesive force, high after tack resistance and water resistance, low content of toxic and harmful substances such as heavy metal and the like, safety, environmental protection and good construction property.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an antibacterial plastic toy water paint is composed of a component A and a component B according to a weight ratio of 2.9-3.1: 1, preferably 3:1, and is prepared by mixing the component A and the component B when in use;
the component A comprises the following components in parts by weight: 65-75 parts of polyurethane resin; 5-8 parts of an environment-friendly solvent, 2-3 parts of a neutralizing agent, 0.1-0.2 part of a defoaming agent, 0.1-0.2 part of a flatting agent, 0.1-0.2 part of a wetting agent, 2-3 parts of an antibacterial agent solution, 15-18 parts of deionized water and 0.1-0.2 part of a thickening agent;
the polyurethane resin is obtained by mixing two kinds of waterborne polyurethane with different hydroxyl values;
the component B comprises two isocyanate curing agents with different NCO contents and a cosolvent, wherein the isocyanate with high NCO content accounts for 60-65 parts, the isocyanate with low NCO content accounts for 5-15 parts, and the cosolvent accounts for 25-30 parts.
Further, the polyurethane resin is obtained by mixing aqueous low hydroxyl value polyurethane and aqueous high hydroxyl value polyurethane according to the weight ratio of 2: 1.
Wherein the aqueous low-hydroxyl-value polyurethane is one or two of Bayhydrol XP2470 and Bayhydrol A2646 which are made by Costa; the waterborne high hydroxyl value polyurethane is Bayhydrol XP 2695 produced by Costa.
The isocyanate with high NCO content is Bayhydur XP2655 manufactured by Costa, the isocyanate with low NCO content is Bayhydur 401-70 manufactured by Costa, and the cosolvent is propylene glycol diacetate PGDA.
Furthermore, the antibacterial agent solution is obtained by diluting an antibacterial agent with deionized water, wherein the content of the antibacterial agent is 10 wt%, and the antibacterial agent is one or two of silver ion bactericides JMAC L P-10 and Sanitized T25-25 of Craine.
Specifically, the environment-friendly cosolvent is one or two of propylene glycol butyl ether and propylene glycol methyl ether, the neutralizing agent is one or two of dimethylethanolamine and triethylamine, the defoaming agent is one or two of Tego Airex901w and Tego Airex902w in Germany Digao, the leveling agent is one or two of PW 336 and BYK-331 in Beck chemistry created first, the wetting agent is one or two of Tego Wet K L270 and Tego Wet K L245 in Germany Digao, and the thickening agent is one or two of ACRYSO L RM-8W, ACRYSO L RM-2020NPR in Tao.
Further, the component A is prepared by the following method:
according to the raw material proportion of the component A, firstly mixing and stirring the two waterborne polyurethanes with different hydroxyl values, then sequentially adding the environment-friendly solvent, the neutralizer, the defoamer, the flatting agent, the wetting agent, the antibacterial agent solution and the thickener into a material preparation pot, and uniformly stirring to obtain the polyurethane.
Preferably, the two waterborne polyurethanes with different hydroxyl values are mixed and stirred for 5 minutes at the speed of 500 r/min; adding the environment-friendly solvent, the neutralizer, the defoaming agent, the flatting agent, the wetting agent, the antibacterial agent solution and the thickening agent into a material preparation pot, and stirring at the speed of 700r/min for 20 minutes to obtain the antibacterial agent.
Further, the component B is prepared by the following method:
according to the raw material proportion of the component B, firstly adding isocyanate with low NCO content into a material preparation pot, adding isocyanate with high NCO content under a stirring state, finally adding a cosolvent, and uniformly stirring to obtain the high-performance polyurethane adhesive.
Preferably, the isocyanate with low NCO content is added with the isocyanate with high NCO content at the stirring speed of 500r/min, and after 5min, the cosolvent is added and stirred for 10 min.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the water-based polyurethane system is selected for the antibacterial plastic toy water paint, and the product performance of the solvent-based paint is achieved through the mixed splicing of different resins and different curing agents, so that the adhesive force, the anti-tack property and the water resistance are good; the antibacterial agent solution is selected to achieve the antibacterial effect, avoid the influence on an emulsion system, simultaneously, not increase other organic and inorganic toxic substances, and meet the limit requirements of toxic and harmful substances such as heavy metal and the like of the plastic toy paint.
Detailed Description
Aiming at the defects of the plastic toy coating in the prior art, the invention provides the antibacterial plastic toy water paint which has good paint film adhesion, excellent physical and chemical properties, can reach the product performance of a solvent type coating, has lower VOC content and heavy metal content, is safe and environment-friendly, and is easy to construct.
The invention is further illustrated by the following examples.
Example 1
An antibacterial water paint for plastic toys is composed of a component A and a component B.
The component A is prepared by mixing water-based resin and an auxiliary agent, and comprises the following components in parts by weight: 75 parts of polyurethane resin, 5 parts of environment-friendly solvent, 2 parts of neutralizing agent, 0.2 part of defoaming agent, 0.2 part of flatting agent, 0.2 part of wetting agent, 3 parts of antibacterial agent solution, 14.2 parts of deionized water and 0.2 part of thickening agent.
The polyurethane resin in the component A is obtained by mixing water-based low hydroxyl value polyurethane and water-based high hydroxyl value polyurethane according to the weight ratio of 2: 1.
The antibacterial agent solution in the component A is obtained by diluting a silver ion antibacterial agent with water, and 90 parts of deionized water is added into 10 parts of the silver ion antibacterial agent by weight.
The component B is prepared by mixing a curing agent and a cosolvent, and comprises the following components in parts by weight: 65 parts of isocyanate with high NCO content, 15 parts of isocyanate with low NCO content and 20 parts of cosolvent.
Specifically, the aqueous low hydroxyl number polyurethane used in component A in this example was Bayhydrol A2646 from Coresi, the aqueous high hydroxyl number polyurethane used was Bayhydrol XP 2695 from Coresi, the environmentally friendly co-solvent used was propylene glycol methyl ether, the neutralizing agent used was triethylamine, the defoamer used was Tego Airex902w from Degao, Germany, the leveling agent used was BYK-331 from Pico, Tego Wet K L245 from TEGO as the wetting agent, the antimicrobial agent used was Sanitized T25-25, and the thickener used was ACRYSO L RM-2020NPR from Dow.
In this example, the high NCO content isocyanate used in component B was Kadsura Bayhydur XP2655, the low NCO content isocyanate used was Kadsura Bayhydur 401-70, and the cosolvent used was PGDA (propylene glycol diacetate).
The preparation method of the antibacterial plastic toy water paint comprises the following steps:
step a, preparation of a component A: according to the raw material ratio, firstly mixing the two waterborne polyurethane resins, and stirring at the speed of 500r/min for 5 minutes; then sequentially adding an environment-friendly solvent, a neutralizer, a defoaming agent, a leveling agent, a wetting agent, an antibacterial agent (a pre-diluted 10% aqueous solution) and a thickening agent into a material preparation pot, and stirring at the speed of 700r/min for 20 minutes; and (5) packaging after detecting that the appearance, the fineness, the viscosity, the luster and the like are qualified.
Step B, preparation of the component B: according to the raw material proportion, firstly adding isocyanate with low NCO content, adding isocyanate with high NCO content at the stirring speed of 500r/min, adding cosolvent after 5min, stirring for 10min, and packaging after detecting that the fineness, the appearance and the viscosity are qualified.
When the antibacterial plastic toy water paint prepared by the embodiment is used, the antibacterial plastic toy water paint is prepared by mixing the component A and the component B according to the weight ratio of 2.9-3.1: 1. The component A and the component B are preferably mixed and used according to the weight ratio of 3: 1.
Example 2
An antibacterial water paint for plastic toys is composed of a component A and a component B.
The component A is prepared by mixing water-based resin and an auxiliary agent, and comprises the following components in parts by weight: 70 parts of polyurethane resin, 8 parts of environment-friendly solvent, 3 parts of neutralizing agent, 0.1 part of defoaming agent, 0.1 part of flatting agent, 0.1 part of wetting agent, 2 parts of antibacterial agent solution, 16.6 parts of deionized water and 0.1 part of thickening agent.
The polyurethane resin in the component A is obtained by mixing water-based low hydroxyl value polyurethane and water-based high hydroxyl value polyurethane according to the weight ratio of 2: 1.
The antibacterial agent solution in the component A is obtained by diluting a silver ion antibacterial agent with water, and 90 parts of deionized water is added into 10 parts of the silver ion antibacterial agent by weight.
The component B is prepared by mixing a curing agent and a cosolvent, and comprises the following components in parts by weight: the isocyanate with high NCO content is 60 parts, the isocyanate with low NCO content is 5 parts, and the cosolvent is 35 parts.
Specifically, the aqueous low hydroxyl value polyurethane used in the component A in this example is Bayhydrol XP2470 from Costa, the aqueous high hydroxyl value polyurethane used is Bayhydrol XP 2695 from Costa, the environmentally friendly cosolvent used is propylene glycol butyl ether, the neutralizing agent used is dimethylethanolamine, the defoamer used is Tego Airex901W from Dedi height, the leveling agent used is PW 336 from Pratio chemical, the wetting agent used is Tego Wet K L270 from German height, the antimicrobial agent used is the silver ion bactericide JMAC L P-10 from Colaine, and the thickener used is YSO L RM-8W from Dow.
In this example, the high NCO content isocyanate used in component B was Kadsura Bayhydur XP2655, the low NCO content isocyanate used was Kadsura Bayhydur 401-70, and the cosolvent used was PGDA.
The preparation method and the using method of the antibacterial plastic toy water paint are the same as those of the embodiment 1.
Example 3
An antibacterial water paint for plastic toys is composed of a component A and a component B.
The component A is prepared by mixing water-based resin and an auxiliary agent, and comprises the following components in parts by weight: 73 parts of polyurethane resin, 7 parts of environment-friendly solvent, 2.5 parts of neutralizing agent, 0.1 part of defoaming agent, 0.1 part of flatting agent, 0.1 part of wetting agent, 2.5 parts of antibacterial agent solution, 14.6 parts of deionized water and 0.1 part of thickening agent.
The polyurethane resin in the component A is obtained by mixing water-based low hydroxyl value polyurethane and water-based high hydroxyl value polyurethane according to the weight ratio of 2: 1.
The antibacterial agent solution in the component A is obtained by diluting a silver ion antibacterial agent with water, and 90 parts of deionized water is added into 10 parts of the silver ion antibacterial agent by weight.
The component B is prepared by mixing a curing agent and a cosolvent, and comprises the following components in parts by weight: the isocyanate with a high NCO content is 63 parts, the isocyanate with a low NCO content is 11 parts, and the cosolvent is 27 parts.
Specifically, the aqueous low hydroxyl value polyurethane used in the component A in this example was Bayhydrol XP2470 and Bayhydrol A2646 from Corcisco at a weight ratio of 1:1, the aqueous high hydroxyl value polyurethane used was Bayhydrol XP 2695 from Corcisco at a weight ratio of 1:1, the environmentally friendly co-solvent used was propylene glycol butyl ether and propylene glycol methyl ether mixed at a weight ratio of 1:1, the neutralizing agent used was dimethylethanolamine and triethylamine mixed at a weight ratio of 1:1, the defoamer used was Dedi's Tego Airex901W and Teairex 902W mixed at a weight ratio of 1:1, the leveling agent used was PW 336 from Corcisco at a weight ratio of 1:1, the bisec chemical BYK-331 from a weight ratio of 1:1, the wetting agent used was Dedi's Tego T WeK 36270 and Tego WetK L from Germany at a weight ratio of 1:1, the antimicrobial agent used was Jerm L from Kescone and the thickener Nox 25 mixed at a weight ratio of 1: 1.
In this example, the high NCO content isocyanate used in component B was Kadsura Bayhydur XP2655, the low NCO content isocyanate used was Kadsura Bayhydur 401-70, and the cosolvent used was PGDA.
The preparation method and the using method of the antibacterial plastic toy water paint are the same as those of the embodiment 1.
The performance of the antibacterial plastic toy water paint prepared in the above examples 1-3 is compared with the performance of the solvent type plastic paint on the market, as shown in the following table.
As seen from the above table, the antibacterial plastic toy water paint has physical and chemical properties reaching the standards of solvent type products, good adhesive force, anti-tack property and water resistance, lower contents of toxic and harmful substances such as heavy metal and the like, safety and environmental protection.
The embodiment of the invention selects two polyurethane resins with different hydroxyl values, different reaction speeds and different film flexibility for blending, when the polyurethane resin is coated on a plastic toy, the coating is baked for 25min at 70 ℃, the toy packaging operation can be carried out after the coating is cooled to the temperature lower than 35 ℃, and the adhesion force of the film is tested to be 0 grade and the anti-back adhesion is tested to be 1 grade after the coating is cooled for 24 hours.
According to the embodiment of the invention, two isocyanate curing agents with different NCO contents are selected for blending, and meanwhile, a cosolvent with a proper volatilization rate is added, so that the reaction speed and the curing time can be controlled, and the good workability is achieved, and after the A, B components are mixed, the isocyanate curing agents are not crosslinked and cured within 4 hours at normal temperature.
According to the embodiment of the invention, the silver ion antibacterial auxiliary is selected, and in the water paint production process, the silver ion antibacterial auxiliary is diluted firstly, so that the influence of the silver ion antibacterial auxiliary on an emulsion system can be prevented, and the antibacterial grade of a final product can reach the antibacterial grade
And (4) stages.
While the invention has been described in detail and with reference to specific examples thereof, it will be apparent to one skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. An antibacterial plastic toy water paint is characterized in that: the coating is composed of a component A and a component B according to the weight ratio of 2.9-3.1: 1, and the coating is prepared by mixing the component A and the component B when in use;
the component A comprises the following components in parts by weight: 65-75 parts of polyurethane resin; 5-8 parts of an environment-friendly cosolvent, 2-3 parts of a neutralizing agent, 0.1-0.2 part of a defoaming agent, 0.1-0.2 part of a flatting agent, 0.1-0.2 part of a wetting agent, 2-3 parts of an antibacterial agent solution, 15-18 parts of deionized water and 0.1-0.2 part of a thickening agent; the neutralizing agent is one or two of dimethylethanolamine and triethylamine;
the polyurethane resin is obtained by mixing two kinds of waterborne polyurethane with different hydroxyl values; the polyurethane resin is obtained by mixing aqueous low-hydroxyl-value polyurethane and aqueous high-hydroxyl-value polyurethane according to the weight ratio of 2:1, wherein the aqueous low-hydroxyl-value polyurethane is one or two of Bayhydrol XP2470 and Bayhydrol A2646 of Corsik; the waterborne high hydroxyl value polyurethane is Bayhydrol XP 2695 produced by Costa;
the component B comprises two isocyanate curing agents with different NCO contents and a cosolvent, wherein the isocyanate with high NCO content is 60-65 parts by weight, the isocyanate with low NCO content is 5-15 parts by weight, the cosolvent is 25-30 parts by weight, the isocyanate with high NCO content is Bayhydur XP2655 produced by Coxie, and the isocyanate with low NCO content is Bayhydur 401-70 produced by Coxie.
2. The antibacterial plastic toy water paint according to claim 1, wherein the cosolvent is PGDA.
3. The antibacterial plastic toy water paint as claimed in claim 1, wherein the antibacterial agent solution is obtained by diluting an antibacterial agent with deionized water, wherein the content of the antibacterial agent is 10 wt%, and the antibacterial agent is one or two of silver ion bactericides JMAC L P-10 and Sanitized T25-25 of Craine.
4. The antibacterial plastic toy water paint as claimed in claim 1, wherein the environment-friendly cosolvent is one or two of propylene glycol butyl ether and propylene glycol methyl ether, the defoamer is one or two of Tego Airex901w and Tego Airex902w of Germany Digao, the leveling agent is one or two of PW 336 and BYK-331 of Bike chemistry, the wetting agent is one or two of Tego Wet K L270 and Tego Wet K L245 of Germany Digao, and the thickener is one or two of ACRYSO L RM-8W, ACRYSO L RM-2020NPR of Dow.
5. The antibacterial plastic toy water paint as claimed in claim 1, which is composed of a component A and a component B in a weight ratio of 3: 1.
6. The antibacterial plastic toy water paint according to any one of claims 1 to 5, characterized in that the component A is prepared by the following method:
according to the raw material proportion of the component A, firstly mixing the two waterborne polyurethanes with different hydroxyl values, stirring, then sequentially adding the environment-friendly cosolvent, the neutralizer, the defoamer, the flatting agent, the wetting agent, the antibacterial agent solution and the thickening agent into a material preparation pot, and uniformly stirring to obtain the polyurethane.
7. The antibacterial plastic toy water paint as claimed in claim 6, wherein the two kinds of waterborne polyurethane with different hydroxyl values are mixed and stirred at a speed of 500r/min for 5 minutes; adding the environment-friendly cosolvent, the neutralizer, the defoaming agent, the flatting agent, the wetting agent, the antibacterial agent solution and the thickening agent into a material preparation pot, and stirring at the speed of 700r/min for 20 minutes to obtain the antibacterial agent.
8. The antibacterial plastic toy water paint according to any one of claims 1 to 5, characterized in that the component B is prepared by the following method:
according to the raw material proportion of the component B, firstly adding isocyanate with low NCO content into a material preparation pot, adding isocyanate with high NCO content under a stirring state, finally adding a cosolvent, and uniformly stirring to obtain the high-performance polyurethane adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710150632.XA CN107011778B (en) | 2017-03-14 | 2017-03-14 | Antibacterial water paint for plastic toys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710150632.XA CN107011778B (en) | 2017-03-14 | 2017-03-14 | Antibacterial water paint for plastic toys |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107011778A CN107011778A (en) | 2017-08-04 |
| CN107011778B true CN107011778B (en) | 2020-07-28 |
Family
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Family Applications (1)
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| US5594065A (en) * | 1995-05-09 | 1997-01-14 | Air Products And Chemicals, Inc. | Two component waterborne crosslinkable polyurethane/acrylate-hybrid systems |
| CN100509975C (en) * | 2007-03-29 | 2009-07-08 | 上海大学 | Water polyacrylic acid composite coating |
| CN101469247B (en) * | 2007-12-29 | 2011-12-14 | 比亚迪股份有限公司 | Bicomponent polyurethane coating composition, preparation and coating method thereof |
| CN105295697A (en) * | 2015-11-23 | 2016-02-03 | 佛山市南海彤粤高分子材料有限公司 | Aqueous PU self-curing paint and preparation method thereof |
| CN106221541B (en) * | 2016-08-25 | 2018-06-22 | 北京建筑材料科学研究总院有限公司 | A kind of aqueous dual-component woodwork coating and preparation method thereof |
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