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Mildew-proof and yellowing-resistant silane modified transparent adhesive and preparation method thereof

A technology of changing silane and transparent glue, which is applied in the direction of botanical equipment and methods, chemical instruments and methods, adhesives, etc., can solve the problems of poor anti-mildew effect of transparent sealants, and achieve good UV and high temperature resistance and good performance Effect

Active Publication Date: 2021-11-02
CHENGDU GUIBAO SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a mildew-proof and anti-yellowing silane-modified transparent adhesive to solve the technical problem that the existing transparent sealants have poor anti-mildew effect

Method used

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  • Mildew-proof and yellowing-resistant silane modified transparent adhesive and preparation method thereof
  • Mildew-proof and yellowing-resistant silane modified transparent adhesive and preparation method thereof
  • Mildew-proof and yellowing-resistant silane modified transparent adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The raw material of a kind of anti-mildew and anti-yellowing silane modified transparent glue of this program is as follows (in parts by weight):

[0031] 100-150 parts of silyl-terminated polyether, 30-60 parts of plasticizer, 10-35 parts of fumed silica, 0.5-2 parts of ultraviolet absorber, 0.5-2 parts of light stabilizer, 0.5-2 parts of antioxidant, 0.3-2 parts of antifungal agent, 3-7 parts of water-removing agent, 2-6 parts of coupling agent, 0.1-1 part of catalyst, and 0.01-0.5 parts of anti-yellowing additive.

[0032] The preparation method of a kind of anti-mildew anti-yellowing silane modified transparent glue of this program is as follows:

[0033] S1: Add silane-terminated polyether, plasticizer, water remover part A (3 to 7 parts of water remover need to be divided into water remover part A and water remover part B, which are added in steps S1 and S4 respectively), Mix antifungal agent, ultraviolet absorber, light stabilizer, antioxidant and anti-yellowing...

experiment example

[0083]Carry out performance test to the product that embodiment and comparative example make, wherein, the test method of the tensile strength of sealant and elongation at break refers to GB / T 528-2009; The light transmittance test method of sealant refers to GB / T 2410-2008, the thickness is 1mm; the mold resistance test method of sealant refers to GB / T 1741; the yellowing test method of sealant: dry / water UV 500h and outdoor exposure 3000h. The test results are shown in Table 5. The test results show that the anti-mildew grades of Examples 1-5 are higher than those of Comparative Examples 1-6. After 500 hours of dry / water UV aging, or 3000 hours of outdoor exposure, the appearance of Examples 1-5 is basically There was no change, and the comparative examples 1-6 all produced different degrees of yellowing. Therefore, the transparent glue prepared according to the present invention has the characteristics of excellent anti-mildew and anti-yellowing properties. In Comparative ...

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Abstract

The invention belongs to the technical field of adhesives, and particularly relates to a mildew-proof and yellowing-resistant silane modified transparent adhesive and a preparation method thereof. The mildew-proof and yellowing-resistant silane modified transparent adhesive is prepared from the following raw materials: 100 to 150 parts of silane-terminated polyether, 30 to 60 parts of a plasticizer, 10 to 35 parts of fumed silica, 0.5 to 2 parts of an ultraviolet light absorber, 0.5 to 2 parts of a light stabilizer, 0.5 to 2 parts of an antioxidant, 3 to 7 parts of a water removal agent, 2 to 6 parts of a coupling agent, 0.1 to 1 part of a catalyst, 0.3 to 2 parts of a mildew-proof agent and 0.01 to 0.5 part of an anti-yellowing aid. According to the scheme, the novel mildew-proof agent is added, so that the technical problem of poor mildew-proof effect of an existing transparent sealant is solved. The silane modified transparent adhesive is good in thixotropy, high in transparency, good in yellowing resistance, good in environmental protection property and good in adhesion, long-acting mildew prevention is achieved by adding the mildew-proof agent, the mildew-proof grade is grade 0, and the silane modified transparent adhesive is suitable for adhesion and sealing of kitchen and bath products or facilities.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an anti-mildew and anti-yellowing silane-modified transparent adhesive and a preparation method thereof. Background technique [0002] Transparent sealant products are mainly used for joint or bonding sealing of glass lighting roof, bathroom glass, home decoration kitchen and bathroom, etc. Due to the long-term exposure of transparent sealant products to relatively humid and indoor and outdoor light environments, relatively high requirements are placed on the appearance and mildew resistance of the sealant. The sealant not only needs to have excellent weather resistance, but also needs to have high mildew resistance. and anti-yellowing properties. [0003] The transparent sealants on the market are mainly silicone sealants. Silicone transparent sealants are often white mist with low transparency and are easy to contaminate the substrate. Since the silicone rubber i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J171/00C09J11/06C07F7/18A01N55/10A01P3/00
CPCC09J171/00C09J11/06C07F7/1804A01N55/00C08K5/5477
Inventor 王有治张文焕罗芳严聪张明黄强
Owner CHENGDU GUIBAO SCI & TECH
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