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Crystal coating material for automobile lacquer and hubs, and preparation method of crystal coating material

A technology for automotive paint and wheel hubs, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor toughness, high price, and poor reliability of the film layer, achieve good adhesion, maintain film formation stability, and solve The effect of toughness and smoothness problems

Inactive Publication Date: 2019-06-11
江苏炫智新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardness of polysilazane coating material has been greatly improved, but the toughness of the film layer is poor after film formation. Although thermoplastic TPU has good toughness and can self-heal scratches to a certain extent, it cannot resist due to hardness problems. Deep scratches, and the resistance to reliability is inferior to that of crystal plating, and the price is expensive
Therefore, in the current existing paint protection technology, it is impossible to effectively take into account the appearance, feel, scratch resistance and reliability

Method used

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  • Crystal coating material for automobile lacquer and hubs, and preparation method of crystal coating material

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Experimental program
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Effect test

Embodiment 1

[0020] The crystal plating material of the present invention comprises the following components by volume: 1 part of toluene diisocyanate, 4.5 parts of hydroxy silicone oil, 0.03 part of dibutyltin dilaurate, 47 parts of organopolysilazane, 48 parts of ethyl acetate, leveling agent 0.9 part, 1 part of antistatic agent, and the hydroxyl value of the hydroxy silicone oil is 63 mg KOH / g.

[0021] The preparation method comprises the following steps:

[0022] S1: Mix toluene diisocyanate, hydroxy silicone oil, dibutyltin dilaurate, and ethyl acetate in a reaction vessel, and then react at 60°C for 3 hours;

[0023] S2: After the temperature of the reactants in step S1 is lowered to 20°C, add 20 parts of organopolysilazane and mix evenly, and react at this temperature range for 1 hour;

[0024] S3: leave the solution after the reaction in step S2 to mature at room temperature for 11 hours;

[0025] S4: Add the remaining 27 parts of organopolysilazane to the solution left standing...

Embodiment 2

[0027] The crystal plating material of the present invention comprises the following components by volume: 1.1 parts of diphenylmethane diisocyanate, 5 parts of hydroxyl silicone oil, 0.05 parts of triethylamine, 50 parts of organopolysilazane, 50 parts of butyl acetate, leveling agent 1 part, 0.9 part of antistatic agent, and the hydroxyl value of the hydroxy silicone oil is 85 mg KOH / g.

[0028] The preparation method comprises the following steps:

[0029] S1: Mix diphenylmethane diisocyanate, hydroxy silicone oil, triethylamine, and butyl acetate in a reaction vessel, and then react at 60°C for 3.5 hours;

[0030] S2: After the temperature of the reactant in step S1 is lowered to 30°C, add 20 parts of organopolysilazane and mix evenly, and react at this temperature range for 1.5h;

[0031] S3: leave the solution after the reaction in step S2 to mature at room temperature for 12 hours;

[0032] S4: Add the remaining 30 parts of organopolysilazane, the leveling agent and t...

Embodiment 3

[0034] The crystal plating material of the present invention comprises the following components by volume: 1.2 parts of isophorone diisocyanate, 5.5 parts of hydroxyl silicone oil, 0.06 parts of triethylamine, 52 parts of organopolysilazane, 51 parts of butyl acetate, leveling 1 part of antistatic agent, 1.1 parts of antistatic agent, and the hydroxyl value of the hydroxy silicone oil is 97mg KOH / g.

[0035] The preparation method comprises the following steps:

[0036] S1: Mix diphenylmethane diisocyanate, hydroxy silicone oil, triethylamine, and cyclohexane in a reaction vessel, and then react at 80°C for 4 hours;

[0037] S2: After the temperature of the reactants in step S1 is lowered to 40°C, add 20 parts of organopolysilazane and mix evenly, and react at this temperature range for 2 hours;

[0038] S3: leave the solution after the reaction in step S2 to mature at room temperature for 13 hours;

[0039] S4: Add the remaining 32 parts of organopolysilazane, the leveling ...

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Abstract

The invention discloses a crystal coating material for automobile lacquer and hubs, and a preparation method of the crystal coating material. The crystal material comprises the following components inparts by volume: 1-1.2 parts of isocyanate, 4.5-5.5 parts of hydroxyl silicone oil, 0.03-0.06 part of a catalyst, 47-52 parts of organic polysilazane, 48-51 parts of an organic solvent and 1.8-2.1 parts of an assistant. The preparation method comprises the following steps: uniformly mixing the isocyanate, the hydroxyl silicone oil, the catalyst and the organic solvent, and then carrying out a reaction at 60-80 DEG C for 3-4 hours, adding 20 parts of the organic polysilazane after the temperature of the reaction is reduced to 20-40 DEG C, uniformly carrying out mixing, carrying out a reactionfor 1-2 hours at the temperature interval, carrying out standing and curing on the solution obtained after the reaction at room temperature for 11-13 hours, adding residual organic polysilazane and the assistant into the solution subjected to standing, and carrying out mixing for 0.5-1 hour by stirring until the solution is uniformly dispersed, so as to obtain the crystal coating material. The prepared crystal coating material has high brightness, high hardness, certain toughness and good scratch resistance.

Description

technical field [0001] The invention relates to the technical field of automobile surface protection materials, in particular to a crystal plating material used for automobile paint surfaces and wheel hubs and a preparation method thereof. Background technique [0002] Automobile paint surface is mainly composed of primer, topcoat and varnish. The main resins in automobile paint are mainly traditional resins such as epoxy resin, acrylic resin, polyurethane resin, etc. Due to the poor aging resistance of organic resins, the paint surface will be damaged for a long time. Without maintenance, the paint surface will be severely damaged due to sunlight and ultraviolet radiation, acid rain and bird droppings erosion in the atmosphere, dust and gravel friction in the air, etc., making the surface of the car paint dull and losing its original luster, which seriously affects the car. beautiful. In the existing protection technology of automobile paint surface, waxing, sealing glaze,...

Claims

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Application Information

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IPC IPC(8): C09D183/16C09D175/04C08G18/76C08G18/75C08G18/61
Inventor 陈磊杨新耕刘炎宇邵捷
Owner 江苏炫智新材料科技有限公司
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