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Nano-silica/alcoholic hydroxyl containing poly(methyl)acrylate paint

A technology of nano-silica and acrylate, applied in the direction of coating, etc., can solve the problems of difficult coating removal and complicated process, and achieve the effects of stable storage, simple preparation process and convenient removal

Active Publication Date: 2015-09-16
董春珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patents all use coupling agents in the process of using nano-silica particles, or require high-temperature reactions, or require multi-step production processes, the process is complicated, and because the coupling agents inevitably form chemical bonds, resulting in chemical cross-linked structures, making Coatings are difficult to remove from substrate surfaces

Method used

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  • Nano-silica/alcoholic hydroxyl containing poly(methyl)acrylate paint
  • Nano-silica/alcoholic hydroxyl containing poly(methyl)acrylate paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve 10g of ethyl acrylate and 1.3g of hydroxyethyl acrylate in 100ml of absolute ethanol, add 100mg of azobisisobutyronitrile under nitrogen protection, and react at 65°C for 36 hours to obtain a polymer with an average molecular weight of 72000g / mol. Ethyl Acrylate - Hydroxyethyl Acrylate.

Embodiment 2

[0020] Dissolve 10g of ethyl acrylate and 1.3g of hydroxypropyl acrylate in 100ml of absolute ethanol, add 100mg of azobisisobutyronitrile under nitrogen protection, and react at 65°C for 36 hours to obtain a polymer with an average molecular weight of 58000g / mol. Ethyl Acrylate - Hydroxypropyl Acrylate.

Embodiment 3

[0022] Take an appropriate amount of acidic ethanol-based silica sol, dissolve it in absolute ethanol, and prepare 100 ml of a solution with a concentration of 10% by mass of nano silicon dioxide, then add 3 g of the polymer obtained in Example 1, 0.2 g of apple essence, and stir evenly for 30 The nano-silicon dioxide / poly(meth)acrylate coating containing alcoholic hydroxyl groups is prepared in minutes.

[0023] Take 0.5ml of the above-mentioned paint and spread it evenly on 100cm 2 On the clean car paint, the contact angle of the test coating surface is 82° after 5 days at normal room temperature, and the surface hardness is 4H according to the ASTMD3363 pencil hardness test method. After the test, the coating is easily removed with a non-woven cloth dampened with alcohol.

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Abstract

The invention discloses a nano-silica / alcoholic hydroxyl containing poly(methyl)acrylate paint, which comprises the following components: 5-45 mass% of nano-silica, 1-5 mass% of alcoholic hydroxyl containing poly(methyl)acrylate, 0.1-1 mass% of essence, and the balance solvent. The paint provided by the invention has the characteristics of simple production process, stable formula storage, high film hardness, lasting adhesion to the substrate surface, no cross-linking structure and easy removal of coating. The paint provided by the invention can be widely applied to automobile, glass, plastic and other surface protection, and has the advantages of water resistance and scratch prevention, etc.

Description

technical field [0001] The invention relates to a nano-silica paint, which is coated on the surface of glass and buildings and has the functions of waterproofing, scratch-proofing and surface protection. Background technique [0002] Nanoparticles have a large specific surface area and high surface activity. After mixing with polymers, it is easy to produce strong physical or chemical effects, which can increase the hardness and strength of the mixture. The disadvantage of relatively weak surface adhesion. Therefore, nanoparticles are widely used in the modification of polymers. However, due to the relatively poor polarity of the polymer, the compatibility between the nano-silica particles and the polymer is relatively poor, and the nanoparticles are easy to agglomerate, which affects the modification effect. [0003] Currently, silane-containing coupling agents are mainly used to modify the surface of nanoparticles to increase the compatibility of nanoparticles and polyme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D7/12
Inventor 董春珍
Owner 董春珍