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Environment-friendly organosilicone sealant and manufacturing method thereof

A manufacturing method and sealant technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of storage stability that are not mentioned, and achieve the effect of convenient use

Inactive Publication Date: 2013-04-03
CHENGDU GUIBAO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN200710044303.3 involves a novel dealcoholized silicone potting compound with hydroxylamine as a catalyst, but does not mention its storage stability, and it is a two-component

Method used

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  • Environment-friendly organosilicone sealant and manufacturing method thereof
  • Environment-friendly organosilicone sealant and manufacturing method thereof
  • Environment-friendly organosilicone sealant and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 100 kg of α, ω-dihydroxypolydimethylsiloxane and 50 kg of filler were dehydrated and blended for 240 minutes in a vacuum kneader at 120° C. and a vacuum degree of 0.099 MPa to obtain a base material. Take 100 parts of base material, 3 parts of α, ω-dimethyl polydimethylsiloxane, and 1 part of tetrabutylketoxime silane and add them into the disperser. The structural formula is 0.5 kg of curing accelerator, vacuumize and stir for 30 minutes under a vacuum degree of 0.06MPa, then add 10 kg of phenyl tributylketoxime silane and 4 kg of vinyl tributylketoxime silane, and continue to mix under a vacuum degree of 0.06MPa After vacuum stirring for 20 minutes, add 0.5 kg of γ-aminopropylmethyldiethoxysilane, 0.5 kg of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, dimethyl dineodecanoate Tin 0.1 kg, vacuumize and stir for 20 minutes under vacuum degree of 0.06MPa, add 3 kg of fumed white carbon black, stir for 3 minutes, continue to vacuumize and stir under vacuum degree of 0.06MP...

Embodiment 2

[0031] 100 kg of α, ω-dihydroxypolydimethylsiloxane and 100 kg of filler were dehydrated and blended for 180 min in a vacuum kneader at 150° C. and a vacuum of 0.08 MPa to obtain a base material. Get 100 kilograms of base materials, α, 5 kilograms of omega-dimethylpolydimethylsiloxane, 2 kilograms of tetrabutylketoxime base silanes, and the structural formula is Add 0.1 kg of curing accelerator to the disperser, vacuumize and stir for 30 minutes at a vacuum of 0.08 MPa, then add 5 kg of phenyltributylketoximosilane, 5 kg of vinyltrimethylisobutylketoximosilane kg, continue vacuuming and stirring for 30 minutes at a vacuum degree of 0.08MPa, then add 0.4 kg of N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane, γ-methacryloxypropyltrimethoxy 0.4 kg of base silane, 0.2 kg of bismuth neodecanoate, Bi(C 7 h 15 COO) 3 After 0.1 kg was vacuumed and stirred for 30 minutes at a vacuum of 0.08 MPa, 2 kg of fumed white carbon black was added and stirred for 3 minutes. After shoveling, ...

Embodiment 3

[0033]100 kg of α, ω-dihydroxypolydimethylsiloxane and 120 kg of filler were dehydrated and blended for 200 minutes in a vacuum kneader at 140° C. and a vacuum degree of 0.09 MPa to obtain a base material. Get 100 kilograms of base materials, α, 8 kilograms of omega-dimethylpolydimethylsiloxane, 1 kilogram of tetramethylketoxime base silane, and 1 kilogram of tetramethylisobutylketoxime base silane, and the structural formula is:

[0034] Add 0.2 kg of curing accelerator to the extension machine, vacuumize and stir for 30 minutes at a vacuum degree of 0.09 MPa, then add 4 kg of vinyl trimethoxyisobutyl ketoximino silane, methyl trimethyl isobutyl ketoximino silane 4 kg of silane silane, continue vacuuming and stirring for 30 minutes at a vacuum degree of 0.09 MPa, add 0.3 kg of γ-aminopropyltriethoxysilane, 0.5 kg of zinc neodecanoate, and vacuumize and stir for 20 minutes at a vacuum degree of 0.09 MPa , add 2 kg of fumed white carbon black, stir for 3 minutes, continue vac...

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Abstract

The invention discloses an environment-friendly organosilicone sealant which is characterized in that 100 parts by mass of alpha,omega-dyhydroxyl polydimethylsiloxane and 50-150 parts by mass of packing are added into a vacuum kneader for dehydration and blending for 120-240min at 120-170 DEG C and at the vacuum degree of 0.06-0.099MPa, and a base stock is obtained. 100 parts by mass of base stock, 3-10 parts by mass of alpha,omega-dimethyl polydimethylsiloxane, 5-15 parts by mass of cross-linking agent, 0.3-1.0 parts by mass of coupling agent, 0.1-0.5 parts by mass of dimethylbis [(1-oxoneodecyl) oxy] stannane, neodecanoic acid zinc and organic bismuth, 0.1-0.5 parts by mass of curing accelerator and 1-3 parts by mass of fumed silica are added into a dispersion machine for vacuum mixing for 20-4040 at a room temperature and at the vacuum degree of 0.06-0.099MPa, and the environment-friendly organosilicone sealant is obtained. Various performances of the environment-friendly organosilicone sealant meet requirements of building sealants, and can be widely applied to the field of buildings.

Description

technical field [0001] The invention relates to an environment-friendly silicone sealant and a manufacturing method thereof, belonging to the field of polymer material manufacturing. Background technique [0002] Silicone sealants are widely used in construction, electronic appliances, automobiles, lighting, machinery, new energy and other industries due to their excellent high and low temperature resistance, excellent UV resistance and weather aging resistance, and good hydrophobic properties. Most of the commonly used catalysts for condensation-type silicone sealants are organotin catalysts. The literature Markromal chem., 1980, 181: 2541-2548 reported that silicone rubber prepared with organotin as a catalyst has good storage stability. At this stage, organotin catalysts commonly used in silicone sealants include dibutyltin dilaurate, dibutyltin diacetate, etc., but the LD50 of dibutyltin dilaurate is 175 mg / kg, and the LD50 of dibutyltin diacetate is 32 mg / kg, these cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J183/04C09J11/06C09J11/04
Inventor 熊婷雷震汪云川王有治袁素兰李步春
Owner CHENGDU GUIBAO SCI & TECH
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