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Manufacturing method of mildew-free sealant

A manufacturing method and sealant technology, applied in the directions of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of blackening of the surface of the sealant, affecting the appearance, environmental impact, etc. Fast vulcanization and environmentally friendly results

Inactive Publication Date: 2018-03-23
浙江久而久化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its heat resistance, cold resistance, aging resistance, moisture resistance and easy use, it has become an indispensable material in the sealing of kitchens, bathrooms, etc. However, there is a disadvantage of greenhouse vulcanized silicone sealant, that is, if it is cured Long-term exposure to hot and humid environment is easy to breed various molds, manifested as obvious blackening of the surface of the sealant, which not only affects the appearance, but also affects the environment and further endangers people's health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] In parts by weight, add 100 parts of hydroxyl-terminated polysiloxane and 15 parts of fumed silica into a planetary mixer and stir for 2 hours; add 2 parts of per(heptadecane)fluorodecyltrimethoxysilane, 0.04 parts of 3-Dicyclohexyl-1,1,3,3-tetrakis[(norbornen-2-yl)ethyldimethylsiloxy]disiloxane, 4 parts poly-4-methyl-1- Pentene, 1 part bis(acetylacetonate)(ethoxyethylpropoxy) titanate, stirred for 2 hours to make a mildew-free sealant.

Embodiment 2

[0015] Add 100 parts of hydroxyl-terminated polysiloxane and 5 parts of fumed silica into a planetary mixer and stir for 1 hour; add 1 part of per(17)fluorodecyltrimethoxysilane, 0.01 part of Hexyl-1,1,3,3-tetrakis[(norbornen-2-yl)ethyldimethylsiloxy]disiloxane, 1 part poly-4-methyl-1-pentene, 0.5 Parts of bis(acetylacetonate)(ethoxyethylpropoxy) titanate and stirred for 1 hour to prepare mold-free sealant.

Embodiment 3

[0017] Add 100 parts of hydroxyl-terminated polysiloxane and 20 parts of fumed silica into a planetary mixer and stir for 5 hours; add 5 parts of per(17)fluorodecyltrimethoxysilane, 0.1 part of 1,3-bicyclic Hexyl-1,1,3,3-tetrakis[(norbornen-2-yl)ethyldimethylsiloxy]disiloxane, 5 parts poly-4-methyl-1-pentene, 2 Parts of bis(acetylacetonate)(ethoxyethylpropoxy) titanate were stirred for 5 hours to obtain mold-free sealant.

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PUM

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Abstract

The invention relates to a manufacturing method of a mildew-free sealant. The manufacturing method comprises the following steps: adding 100 parts of hydroxyl-terminated polysiloxane and 5 to 20 partsof gas-phase silicon dioxide into a planetary stirring machine to obtain a mixture and stirring the mixture for 1 to 5 hours; adding 1 to 5 parts of perfluoro (heptadecafluoro) decyl-trimethoxy silane, 0.01 to 0.1 part of 1,3-dicyclohexyl-1,1,3,3-tetra[(norborene-2-yl) ethyl dimethylsiloxy] disiloxane, 1 to 5 parts of poly-4-methyl-1-pentene and 0.5 to 2 parts of bis(acetylacetone) (ethoxy ethoxypropyl) titanate; performing stirring for 1 to 5 hours to obtain the mildew-free sealant.

Description

technical field [0001] The invention relates to a method for manufacturing a mildew-free sealant. Background technique [0002] Silicone sealant is a paste made of polydimethylsiloxane as the main raw material, supplemented with crosslinking agent, filler, plasticizer, coupling agent, and catalyst in a vacuum state. Exposure to water in the air should cure to form an elastic silicone rubber. Due to its heat resistance, cold resistance, aging resistance, moisture resistance and easy use, it has become an indispensable material in the sealing of kitchens, bathrooms, etc. However, there is a disadvantage of greenhouse vulcanized silicone sealant, that is, if it is cured Long-term exposure to hot and humid environment is easy to breed various molds, manifested as obvious blackening of the surface of the sealant, which not only affects the appearance, but also affects the environment and further endangers people's health. [0003] CN201510255904.3 discloses a special mold-proof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J183/08C09J11/04C09J11/06C09J11/08
CPCC08L2205/03C09J11/04C09J11/06C09J11/08C09J183/04C08L83/08C08L23/20C08K3/36C08K5/10
Inventor 尚才宝陈金才
Owner 浙江久而久化学有限公司
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