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Preparation method of high-toughness UV varnish

A glossy varnish, high toughness technology, applied in coatings and other directions, can solve the problems of poor mechanical properties, insufficient impact resistance and toughness of coating materials, achieve uniform sol network structure, improve mechanical properties and bonding strength, Reducing the effect of insufficient uniformity of stress

Inactive Publication Date: 2020-11-24
太仓康源化建医药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to make the UV varnish coating improve the poor mechanical properties of the overall coating, the impact resistance of the coating material and the defects of toughness, the application provides a method for preparing a high-toughness UV varnish, the specific preparation steps It is: S1. According to the mass ratio of 1:3~5:10~15, stir and mix deionized water, methanol and tetramethoxysilane and add hydrochloric acid dropwise. After heat preservation reaction, concentrate by rotary evaporation and collect the rotary evaporation liquid. Then according to the mass ratio of 1:2 to 3:10, add the rotary steaming liquid and ammonia water to the dispersion solvent for gel treatment, and then dry to prepare dry airgel; S2, stir and mix the dry airgel and nano-titanium dioxide particles and grind and sieve, after activation treatment, collect the activated particles and perform hydrophobic modification treatment, collect the reaction solution and centrifuge to collect the lower layer precipitate, and wash to obtain a mixed gel solution; S3, use butyl acrylate, acrylic acid, methyl methacrylate It is a monomer, mixed with the mixed gel solution and free-radically polymerized to obtain a modified polyacrylate; S4, in parts by weight, weigh 25-30 parts of UV acrylate and 55-60 parts of modified polyacrylate , 15-20 parts of ethyl acetate, 15-20 parts of butyl acetate, 5-10 parts of methyl isobutyl ketone, 3-5 parts of diisobutyl ketone, 2-5 parts of photoinitiator and 0.5-1.5 parts of fluid Leveling agent, added step by step and stirred and mixed several times, can prepare the described high toughness UV varnish

Method used

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Examples

Experimental program
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Embodiment 1

[0033]In terms of parts by weight, weigh 45 parts of tetramethoxysilane, 15 parts of methanol and 6 parts of deionized water respectively and place them in a Erlenmeyer flask, stir and mix and add 1 mol / L hydrochloric acid of 1 / 100 of the quality of deionized water, After insulated reaction at 78°C for 20 hours, the mixed liquid was collected and treated by rotary evaporation. After the rotary evaporation reached 1 / 5 of the original volume, the rotary evaporated liquid was collected and the mass ratio was 1:2:10. Add a fraction of 8% ammonia water to N, N-dimethylformamide, stir and mix and place at room temperature for gelation treatment, collect the gel liquid and place it in a drying kettle, dry it under pressure at 8MPa and collect dry air condensation Glue particles;

[0034] According to the mass ratio of 1:5, the dry airgel particles and nano-titanium dioxide particles were stirred and mixed and ground through a 2000 mesh sieve, the sieved particles were collected and p...

Embodiment 2

[0038] In terms of parts by weight, weigh 47 parts of tetramethoxysilane, 17 parts of methanol and 7 parts of deionized water respectively and place them in a Erlenmeyer flask, stir and mix and add 1 mol / L hydrochloric acid of 1 / 100 of the quality of deionized water, After insulated reaction at 84°C for 22 hours, the mixed liquid was collected and treated by rotary evaporation. After the rotary evaporation reached 1 / 5 of the original volume, the rotary evaporated liquid was collected and the mass ratio was 1:2:10. Add a fraction of 8% ammonia water to N,N-dimethylformamide, stir and mix and place at room temperature for gelation treatment, collect the gel liquid and place it in a drying kettle, dry it under pressure at 9MPa and collect dry air condensation Glue particles;

[0039] According to the mass ratio of 1:5, the dry airgel particles and nano-titanium dioxide particles were stirred and mixed and ground through a 2000 mesh sieve, the sieved particles were collected and p...

Embodiment 3

[0043] In terms of parts by weight, weigh 50 parts of tetramethoxysilane, 20 parts of methanol and 8 parts of deionized water respectively and place them in a Erlenmeyer flask, stir and mix and add 1 mol / L hydrochloric acid of 1 / 100 of the quality of deionized water, After insulated reaction at 95°C for 24 hours, the mixed liquid was collected and treated by rotary evaporation. After the rotary evaporation reached 1 / 5 of the original volume, the rotary evaporated liquid was collected and the mass ratio was 1:2:10. Add a fraction of 8% ammonia water to N,N-dimethylformamide, stir and mix and place at room temperature for gelation treatment, collect the gel liquid and place it in a drying kettle, dry it under pressure at 10MPa and collect dry air condensation Glue particles;

[0044] According to the mass ratio of 1:5, the dry airgel particles and nano-titanium dioxide particles were stirred and mixed and ground through a 2000 mesh sieve, the sieved particles were collected and ...

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Abstract

The application relates to the field of coatings, and specifically discloses a preparation method of a high-toughness UV varnish. The specific preparation steps of the preparation method of the high-toughness UV varnish are as follows: S1, stirring and mixing deionized water, methanol and tetramethoxysilane and adding hydrochloric acid dropwise, and performing rotary evaporation, concentration andgelling to obtain a modified aerogel; S2, stirring and mixing the dry aerogel and titanium dioxide and performing grinding and sieving, and performing hydrophobic modification treatment to obtain a mixed gel solution; S3, using butyl acrylate, acrylic acid and methyl methacrylate as monomers to obtain modified polyacrylate by radical polymerization; and S4, separately weighing UV acrylate, the modified polyacrylate, ethyl acetate, butyl acetate, methyl isobutyl ketone, diisobutyl ketone, a photo-initiator and a leveling agent, and performing stirring and mixing to obtain the high-toughness UVvarnish. The high-toughness UV varnish of the application can be used as an electronic material mobile phone or computer flat paint, a paint film is improved by aerogel and gel modification, and thetoughness strength of a coating layer is effectively improved.

Description

technical field [0001] The application relates to the field of coatings, more specifically, it relates to a preparation method of high-toughness UV varnish. Background technique [0002] In the electronics industry, by coating the surface of electronic products or materials with varnish to improve the impact resistance, decoration, corrosion resistance and aging resistance of materials, it has good effects and significant effects, so now electronic In the coating process of products, the demand for clear varnish is increasing day by day. [0003] For a long time, varnishes have been mainly solvent-based. In recent years, with the strengthening of environmental protection awareness, the emission of volatile organic compounds has been restricted in the existing coating processing process. The market demand for water-based coatings continues to grow. At the same time, for To reduce VOC emissions, solvent-based varnishes are commonly used with water-based compact short processe...

Claims

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Application Information

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IPC IPC(8): C09D4/06C09D4/02C09D7/62C09D7/80
CPCC09D4/06C09D7/62C09D7/70C09D7/80
Inventor 王屹皓马明华邵香民王霖龙
Owner 太仓康源化建医药有限公司
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