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High-wear-resistance hydrophilic resin, high-wear-resistance solvent-free anti-fog coating and preparation method and application thereof

A technology of hydrophilic resin and anti-fog coating, applied in the field of coatings, can solve the problems of difficult to obtain wear-resistant anti-fog performance coating, unfavorable green sustainable development, difficult unblocking reaction, etc., and achieve continuous hydrophilic anti-fog performance , Excellent anti-fog effect, good water resistance effect

Active Publication Date: 2021-11-05
武汉中科先进材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: CN106752623B has synthesized the polyacrylic acid ester that main chain contains silane coupling agent (MPS), glycidyl methacrylate (GMA) and sulfonic acid group hydrophilic monomer (AMPS), adopts orthoethyl silicate (TEOS) and triethylenetetramine as curing agent, respectively react with main chain siloxane groups and epoxy groups to improve crosslink density and wear resistance; CN101591494B uses aziridine crosslinking agent to react with carboxyl groups on polyacrylate main chain Improve the degree of crosslinking and the wear resistance of the coating; however, the above system needs to be applied to the substrate such as transparent glass or plastic substrate shortly after mixing, the gel time is short, and it is inconvenient to use
CN102086348B uses blocked polyurethane to extend the gel reaction time, but the preparation method is complicated, and the unblocking reaction is difficult to completely carry out, which affects the performance of the coating
However, organic solvents will cause harm to the environment and organisms, which is not conducive to green and sustainable development
In summary, the existing reports are difficult to obtain a solvent-free coating with good wear resistance and excellent anti-fog performance.

Method used

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  • High-wear-resistance hydrophilic resin, high-wear-resistance solvent-free anti-fog coating and preparation method and application thereof
  • High-wear-resistance hydrophilic resin, high-wear-resistance solvent-free anti-fog coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of high wear-resistant hydrophilic resin:

[0033] (a) Add 8.46g (0.02mol) isocyanurate triacrylate and 4.2g (0.04mol) diethanolamine to a 100mL three-necked flask, start stirring and raise the temperature to 65°C for 2 hours to obtain a hydrophilic modified prepolymer 1;

[0034](b) Take another 100mL three-neck flask, add 17.78g (0.08mol) isophorone diisocyanate and 0.021g (0.05wt%) dibutyltin dilaurate and start stirring; another 0.11g (0.262wt%) is weighed in turn p-Hydroxyanisole, 0.22g (0.525wt%) 2,6-di-tert-butyl-4-methylphenol and 24.0g (0.04mol) polyethylene glycol monomethyl ether 600 and 11.92g (0.04mol) pentaerythritol Triacrylate (PETA), fully mixed until completely dissolved, transferred to a constant pressure dropping funnel, and slowly added dropwise to the above-mentioned three-necked flask at room temperature (the reaction is violently exothermic, control the dropping speed to avoid local overheating), drop it After continuing to react...

Embodiment 2

[0040] 1. Preparation of high wear-resistant hydrophilic resin:

[0041] (a) Add 40.11g (0.03mol) glycidyl etheroxypropyl caged polysilsesquioxane and 25.23g (0.24mol) diethanolamine to a 250mL three-necked flask, start stirring and raise the temperature to 65°C for 2 hours to obtain the Water-modified prepolymer 1;

[0042] (b) Take another 500mL three-necked flask, add 125.92g (0.48mol) dicyclohexylmethane diisocyanate and 0.13g (0.05wt%) dibutyltin dilaurate and start stirring; another 0.695g (0.262wt%) p-Hydroxyanisole, 1.39g (0.525wt%) 2,6-di-tert-butyl-4-methylphenol and 64.6g (0.1mol) octylphenol ethoxylate (OP-10), 40g (0.08 mol) polyethylene glycol monomethyl ether 500 and 34.83g (0.3mol) hydroxyethyl acrylate, fully mixed until completely dissolved, transferred to a constant pressure dropping funnel, and slowly added dropwise to the above-mentioned three-necked flask at room temperature (the The reaction is violently exothermic, control the drop rate to avoid local...

Embodiment 3

[0047] 1. Preparation of high wear-resistant hydrophilic resin:

[0048] (a) Add 17.35 g (0.03 mol) of dipentaerythritol hexaacrylate and 9.46 g (0.09 mol) of diethanolamine into a 100 mL three-necked flask, start stirring and raise the temperature to 65 ° C for 2 h to obtain a hydrophilic modified prepolymer 1;

[0049] (b) Take another 250mL three-necked flask, add 40.01g (0.18mol) isophorone diisocyanate and 0.055g (0.05wt%) dibutyltin dilaurate and start stirring; another 0.29g (0.262wt%) is weighed in turn p-Hydroxyanisole, 0.58g (0.525wt%) 2,6-di-tert-butyl-4-methylphenol and 59.4g (0.09mol) nonylphenol ethoxylate (TX-10) and 11.71g ( 0.09mol) of hydroxypropyl acrylate, fully mixed until completely dissolved, transferred to a constant pressure dropping funnel, and slowly added dropwise to the above-mentioned three-necked flask at room temperature (the reaction is violently exothermic, control the drop rate to avoid local overheating), drop After continuing the reaction ...

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Abstract

The invention discloses high-wear-resistance hydrophilic resin, a high-wear-resistance solvent-free anti-fog coating and a preparation method and application thereof. The anti-fog coating comprises the following components: the high-wear-resistance hydrophilic resin, hydrophobic resin, a reactive diluent, a photoinitiator and an auxiliary agent, the hydrophilic resin is a UV-curable hydrophilic polymer designed by the invention. The hydrophilic resin with high wear resistance is designed and applied to an antifogging formula to obtain the high-wear-resistance solvent-free antifogging coating, and the coating is safe and non-toxic, can form a film on various types of base materials, can be rapidly cured under ultraviolet irradiation, has high bonding strength with the base materials, yhe formed coating has good transparency, wear resistance and chemical resistance, and has excellent antifogging performance.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a high wear-resistant hydrophilic resin, a high wear-resistant solvent-free anti-fog coating and a preparation method and application thereof. Background technique [0002] Highly transparent materials are indispensable materials in our daily production, but they are prone to fogging during use, which reduces the light transmittance on the surface of the material, affects the line of sight, brings a lot of inconvenience to life, and even causes serious harm . In recent years, anti-fog technology has gradually attracted people's attention. The research and development of hydrophilic anti-fog coatings has made the fastest progress, and a series of advanced technologies and relatively mature products have been formed, such as optical lenses, automotive display screens, goggles, Face shields, helmet panels, etc. Hydrophilic anti-fog coating is a functional material. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/12C08G18/66C08G18/48C08G18/67C08G18/61C08G18/32C09D175/16
CPCC08G18/12C08G18/6666C08G18/6688C08G18/4833C08G18/672C08G18/4804C08G18/4009C09D175/16C08G2150/00C08G18/3853C08G18/61C08G18/3278
Inventor 康翼鸿喻学锋程文杰杨新耕吴列
Owner 武汉中科先进材料科技有限公司
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