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High-transmittance mildew-proof glass and preparation method thereof

A mildew-proof and glass-proof technology, applied in the direction of coating, etc., can solve the problems of affecting the use of transparent glass, reducing the light transmittance of glass, and low connection strength, so as to ensure mildew resistance, light transmittance, compactness and transmittance Excellent light efficiency, improved durability and light transmittance

Pending Publication Date: 2022-06-24
JIANGSU XIUQIANG GLASSWORK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, on the one hand, silica particles are directly coated on the glass surface, and the connection strength between the two solids is low, so the durability is poor; It will significantly reduce the light transmittance of the glass and affect the use of the glass

Method used

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  • High-transmittance mildew-proof glass and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0027] Preferably, 3-piperazinylpropylmethyldimethoxysilane is included in the silicone resin. The preparation method of the organosilicon resin comprises: firstly hydrolyzing methyltriethoxysilane under acidic conditions for 1-2 hours, and then adding 3-piperazinylpropylmethyldimethoxysilane to continue hydrolysis under acidic conditions for 1-2 hours. -2h, to obtain a silicone resin whose edge of the network structure is dominated by 3-piperazinylpropylmethyldimethoxysilane. The mass ratio of methyltriethoxysilane and 3-piperazinylpropylmethyldimethoxysilane was (70%:30%)-(90%:10%).

[0028] In this way, methyltriethoxysilane is hydrolyzed for a certain period of time to form a certain cross-linked resin network, and then 3-piperazinylpropylmethyldimethoxysilane is added, so that its main hydrolysis condensation exists in the The edge of the network structure; and because the amount of 3-piperazinylpropylmethyldimethoxysilane added is less than that of methyltriethoxysilane...

Embodiment 1

[0036] A kind of high light-transmitting and mildew-proof glass is prepared through the following steps:

[0037] S1. The hydrophobically modified SiO 2 The nanoparticles are dispersed in a mixed solvent composed of n-butanol and water (volume ratio of 85%: 15%), then add silicone resin, hardener and curing agent, and mix evenly to obtain a barrier and anti-mildew coating;

[0038] Among them, the hydrophobically modified SiO in the barrier anti-mildew coating 2 The mass content of nanoparticles is 30%, the content of silicone resin is 15%, and the total solid content is 50%. Hydrophobically modified SiO 2 Nanoparticles are 3-piperazinylpropylmethyldimethoxysilane-modified SiO 2 Nanoparticles; Silicone resins are prepared by the following steps:

[0039] Methyltriethoxysilane was first hydrolyzed under acidic conditions for 1 h, and then 3-piperazinylpropylmethyldimethoxysilane was added to continue hydrolysis under acidic conditions for 2 h to obtain the edge of the netwo...

Embodiment 2-5

[0042] A kind of high light transmission and mildew proof glass, compared with Example 1, the difference is that the hydrophobically modified SiO 2 The contents of nanoparticles and silicone resin are shown in Table 1.

[0043] Test for mildew resistance according to standard GBT 1741-2007.

[0044] Preparation conditions and test results of Table 1 Examples 1-5

[0045]

[0046] As can be seen from Table 1, the present invention obtains a coating with low porosity and high density barrier property by controlling the content and ratio of silica and silicone resin, thereby improving the light transmittance and mildew resistance of the glass.

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Abstract

The invention provides high-transmittance mildew-proof glass and a preparation method thereof. The high-transmittance mildew-proof glass comprises a glass base layer and a barrier mildew-proof coating coated on the surface layer of the glass base layer, the barrier mildew-proof coating comprises hydrophobic modified SiO2 nanoparticles and organic silicon resin in a mass ratio of (1.5-3): 1; the number of functional groups of the organic silicon resin is greater than 2, and the organic silicon resin is used for realizing chemical connection between the SiO2 nanoparticles and the glass base layer. According to the invention, a layer of compact barrier coating is prepared on the surface of glass through high-content hydrophobic modified silicon dioxide, so that efficient barrier mildew prevention is realized, meanwhile, the durability and light transmittance of the coating are improved through modified organic silicon resin, and the problem that the light transmittance is reduced due to the compact coating is prevented.

Description

technical field [0001] The invention relates to the technical field of functional glass, in particular to a high-light-transmitting mildew-proof glass and a preparation method thereof. Background technique [0002] Water or moisture is easily adsorbed on the glass surface. Subsequently, water or moisture diffuses into the glass. Soluble silicates in the surface layer are hydrolyzed and destroyed. The first is that sodium silicate and potassium silicate are hydrolyzed and destroyed. Formation of caustic soda (NaOH) and separation of SiO 2 . Separated SiO 2 Silica gel is formed, forming a protective film on the glass surface, which prevents further erosion. The caustic soda formed by hydrolysis reacts with carbon dioxide in the air to form sodium carbonate, which accumulates on the glass surface to form soluble salts in the surface film. Due to its strong hygroscopicity, it absorbs water and deliquesces, and finally forms small droplets of lye. When the surrounding tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00
CPCC03C17/009C03C2217/78C03C2218/112
Inventor 张新利赵庆忠梁海潮毛庆刚李岩张赛赛
Owner JIANGSU XIUQIANG GLASSWORK CO LTD