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Nano-composite coating material

A nano-composite coating and deionized water technology, applied in the direction of coating, can solve the problems of poor hardness, adhesion, wear resistance, etc., and achieve the goals of optimizing the curing process, improving gas-liquid barrier performance, and improving hardness and adhesion Effect

Inactive Publication Date: 2019-08-23
LANZHOU CITY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the coating materials used in automobile sunroofs, fixed windows, and door sliding windows generally have the defects of poor hardness, adhesion, and wear resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A nano composite coating material prepared by the following steps:

[0021] S1. Mix 1mol of γ-(2,3-glycidoxy)propyltrimethoxysilane with 5mol of deionized water and stir at room temperature for 0.5h at high speed to obtain hydrolyzed organosiloxane; add 0.2mol of aluminum isopropoxide and 15mol Deionized water, heated to 80°C under stirring conditions, continued stirring for 13 hours, and cooled naturally to obtain composite sol;

[0022] S2. Slowly add 0.01 mol of nitric acid dropwise to the mixed solution of 1 mol of ethyl orthosilicate, 14 mol of deionized water and 6 mol of ethanol, and stir at room temperature until it becomes clear to obtain the ethyl orthosilicate hydrolysate;

[0023] S3. Take 100g of composite sol and 25g of ethyl orthosilicate hydrolysate and mix, stir evenly at room temperature to obtain composite glue;

[0024] S4. Mix deionized water and butanediol at a molar ratio of 1:0.3 to obtain a butanediol / water mixture;

[0025] Add molybdenum disulfide powd...

Embodiment 2

[0029] A nano composite coating material prepared by the following steps:

[0030] S1. Mix 1 mol of vinyl tris (β-methoxyethoxy) silane, 5 mol of deionized water and 0.01 mol of nitric acid, and stir at room temperature at high speed for 3 hours to obtain hydrolyzed organosiloxane; add 0.175 mol of aluminum isopropoxide and 13 mol With deionized water, the temperature is raised to 75°C under stirring, the stirring is continued for 15 hours, and the mixture is naturally cooled to obtain a composite sol.

[0031] S2. Slowly add 0.01 mol of nitric acid dropwise to the mixed solution of 1 mol of ethyl orthosilicate, 14 mol of deionized water and 6 mol of ethanol, and stir at room temperature until it becomes clear to obtain the ethyl orthosilicate hydrolysate;

[0032] S3. Take 100g of composite sol and 15g of ethyl orthosilicate hydrolysate and mix, stir evenly at room temperature to obtain composite glue;

[0033] S4. Mix deionized water and butanediol at a molar ratio of 1:1.8 to obtai...

Embodiment 3

[0038] A nano composite coating material prepared by the following steps:

[0039] S1, 1mol N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 6mol deionized water mixed with 0.01mol acetic acid, stirred at room temperature at high speed for 2h to obtain hydrolyzed organosiloxane; add 0.15mol isopropyl Aluminum alkoxide and 18 mol deionized water are heated to 85° C. under stirring, and the stirring is continued for 10 hours, and the mixture is naturally cooled to obtain a composite sol.

[0040] S2. Slowly add 0.01 mol of nitric acid dropwise to the mixed solution of 1 mol of ethyl orthosilicate, 14 mol of deionized water and 6 mol of ethanol, and stir at room temperature until it becomes clear to obtain the ethyl orthosilicate hydrolysate;

[0041] S3. Take 100g of composite sol and 20g of ethyl orthosilicate hydrolysate and mix, stir evenly at room temperature to obtain composite glue;

[0042] S4. Mix deionized water and butanediol at a molar ratio of 1:1.05 to obtain a butanediol / wa...

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PUM

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Abstract

The invention discloses a nano-composite coating material. The nano-composite coating material is prepared by taking aluminium isopropoxide (AIP) and siloxane with relatively low price are used as main raw materials, and the composite coating is prepared with combination of a sol-gel method, wherein pencil hardness of the composite coating on polycarbonate (PC) and polymethyl methacrylate (PMMA) reaches 6H or above, and adhesive force reaches 2. According to the invention, firstly, a composite coating is modified by tetraethyl orthosilicate (TEOS), and the research shows that through additionof a tetraethyl orthosilicate hydrolysis product, a polycondensation reaction between AIP hydrolysis products and organosiloxane hydrolysis products is further promoted, so that curing process of thecomposite coating can be optimized, and hardness and adhesive force of the coating can be improved; and then, the composite coating is modified by an alcohol-water mixture of the graphene-like molybdenum disulfide, so that wear resistance of the coating can be improved, and gas-liquid barrier performance of the coating can be improved.

Description

Technical field [0001] The invention relates to the field of nano material preparation, in particular to a nano composite coating material. Background technique [0002] At present, the coating materials used for car sunroofs, fixed windows, and door moving windows generally have the defects of poor hardness, adhesion, and wear resistance. Summary of the invention [0003] In order to solve the above problems, the present invention provides a nanocomposite coating material. The coating prepared by the material has the advantages of high hardness, strong wear resistance, strong adhesion and the like. [0004] In order to achieve the above objectives, the technical solutions adopted by the present invention are: [0005] A nano composite coating material prepared by the following steps: [0006] S1. Mix organosiloxane, deionized water and inorganic acid at a molar ratio of 1:5~7:0~0.01, and stir at room temperature at high speed for 0.5~3h to obtain hydrolyzed organosiloxane; Add alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/61
CPCC08K2003/3009C09D7/61C09D183/04C08K3/30C08K3/042
Inventor 郑小平陈奎张天云刘广桥
Owner LANZHOU CITY UNIV
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