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Antistatic organic silicon transparent hard coating layer material and preparation method thereof

A hard coating, silicone technology, applied in conductive coatings, coatings and other directions, can solve the problems of antistatic performance decline with time and humidity, antistatic performance retention time is short, antistatic performance decline, etc., to achieve excellent antistatic performance. Excellent electrostatic properties, excellent scratch resistance and low production cost

Inactive Publication Date: 2021-06-01
CAPITAL NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S. Patent No. 5,091,213 discloses a process for improving antistatic properties on the surface of plastic substrates. The antistatic performance of plastics obtained by this method has a short retention time, and when the ambient humidity becomes low, the antistatic performance of the material decreases significantly.
Chinese patent CN102199305B discloses a method for improving the antistatic properties of plastic surfaces. Although the plastics treated by this method have good antistatic properties, the processing methods are complicated and pollute the environment.
[0005] At present, the reported methods for improving the antistatic properties of plastic surfaces are complicated, and the antistatic properties decrease significantly with time and humidity.

Method used

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  • Antistatic organic silicon transparent hard coating layer material and preparation method thereof
  • Antistatic organic silicon transparent hard coating layer material and preparation method thereof

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Effect test

Embodiment 1

[0025] Methyl orthosilicate, methyltrimethoxysilane, dimethyldimethoxysilane, γ-(2,3-glycidoxy)-propyltrimethoxysilane and N,N-dimethyl -N-octadecylaminopropyltrimethoxysilane quaternary ammonium salt was stirred evenly in methanol, added 0.1% formic acid by mass fraction, reacted at 30°C for 4h; added 0.1% by mass fraction of cobalt acetylacetonate, and obtained Layer material solution; spray the above material solution on the surface of the plastic substrate, and after the surface is dry, cure at 80°C for 0.5h to obtain an antistatic silicone transparent hard coating. The hardness of the coating is 9H, the adhesion is 5B, the light transmittance is 88%, and the surface resistance value is 2.9×10 9 Ω. (Such as figure 1 shown)

Embodiment 2

[0027] Methyl orthosilicate, methyltriethoxysilane, diethyldimethoxysilane, γ-(2,3-glycidoxy)propylmethyldiethoxysilane and N,N- Dimethyl-N-dodecylaminopropyl trimethoxysilyl ammonium chloride was stirred evenly in butyl acetate, added nitric acid with a mass fraction of 0.3%, and reacted at 50°C for 5 hours; manganese acetone to obtain a coating material solution; spray the above material solution on the surface of the plastic substrate, and after the surface is dry, cure at 120°C for 0.8h to obtain an antistatic silicone transparent hard coating. The hardness of the coating is 9H, the adhesion is 5B, the light transmittance is 90%, and the surface resistance value is 3.0×10 9 Ω. (Such as figure 2 shown)

Embodiment 3

[0029] Ethyl orthosilicate, ethyltrimethoxysilane, dimethyldiethoxysilane, 2-(3,4-epoxycyclohexylethyl)trimethoxysilane and N,N-dimethyl- Stir N-dodecylaminopropyltrimethoxysilyl ammonium chloride in n-butanol evenly, add hydrochloric acid with a mass fraction of 1%, and react at 40°C for 7 hours; add aluminum acetylacetonate with a mass fraction of 0.5%, to obtain Coating material liquid: Spray the above material liquid on the surface of the plastic substrate, and after the surface is dry, cure at 110°C for 0.9h to obtain an antistatic silicone transparent hard coating. The hardness of the coating is 9H, the adhesion is 5B, the light transmittance is 89%, and the surface resistance value is 2.9×10 9 Ω.

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Abstract

The invention discloses an antistatic organic silicon transparent hard coating layer and a preparation method thereof. The method comprises the following steps: adding a curing agent into a hydrolysate composed of tetrafunctional silane, trifunctional silane, bifunctional silane, a silane coupling agent, an antistatic agent, a catalyst and a solvent, uniformly stirring, and spraying on the surface of a plastic substrate; and after the surface is dried, curing at 80-150 DEG C for 0.5-2 hours to obtain the antistatic transparent hard coating. According to the invention, the prepared coating layer not only has excellent antistatic performance, but also has good transparency, the hardness is as high as 9H, the adhesive force is 5B level, the visible light transmittance is 85% or above, and the scratch resistance is excellent; and the method is simple in preparation process, low in production cost and beneficial to industrial production.

Description

technical field [0001] The invention relates to a coating, in particular to an antistatic organic silicon transparent hard coating material suitable for surface protection of plastic substrates and a preparation method thereof. Background technique [0002] Plastic refers to a material that uses resin (or direct polymerization of monomers during processing) as the main component, plasticizers, fillers, lubricants, colorants and other additives as auxiliary components, and can be flow-formed during processing. Due to the advantages of good processing characteristics, light weight, low cost, high specific strength, small thermal conductivity and good chemical stability, plastics are widely used in people's production and life. [0003] However, at present, plastics have a small dielectric constant and are generally non-conductors with high insulation performance. Therefore, the generation of static electricity cannot be avoided. Due to the accumulation of electrostatic charge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/00C08G77/14C09D183/06C09D7/63C09D5/24C08J7/046C08J7/044
CPCC08G77/14C08K2201/017C09D4/00C09D5/24C09D183/06C09D7/63C08J7/0427C08J7/044C08J7/046C08K5/544
Inventor 孟祥福李祥谢岱君
Owner CAPITAL NORMAL UNIVERSITY
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