Dealcoholized condensed dual-component room-temperature vulcanized silicone rubber building sealant and preparation method thereof

A room temperature vulcanization, dealcohol condensation technology, applied in chemical instruments and methods, adhesives, adhesive additives, etc. Good operation stability, good water-resistant immersion bonding performance, and the effect of improving hot-water-resistant bonding performance

Inactive Publication Date: 2017-06-20
JIANGSU TIANCHEN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional one-component silicone rubber building sealant has poor hot water resistance and bonding performance to aluminum and glass, is greatly affected by the season, and has poor construction operation stability.

Method used

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  • Dealcoholized condensed dual-component room-temperature vulcanized silicone rubber building sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of preparation method of dealcohol condensation type two-component room temperature vulcanized silicone rubber building sealant, its preparation method is as follows:

[0031] (1) 40 parts of 80000 mPa.s α, ω-dihydroxy polydimethylsiloxane, 60 parts of 20000 mPa.s α, ω-dihydroxy polydimethylsiloxane, 100 parts by mass Add 25 parts of mPa.s simethicone oil and 80 parts of calcium carbonate into a high-speed planetary mixer, and stir for 2.5 hours under a vacuum of -0.05MPa to prepare component A;

[0032] (2) In parts by mass, 100 parts of 100 mPa.s dimethyl silicone oil, 50 parts of ethyl orthosilicate, 25 parts of propyl orthosilicate, γ-(2,3-epoxypropoxy)propane Add 15 parts of trimethoxysiloxane, 18 parts of γ-aminopropyltriethoxysilane, and 1.5 parts of dibutyltin dilaurate into a high-speed planetary mixer, and stir for 2 hours under a vacuum of -0.05MPa. Component B is obtained;

[0033] (3) Mix component A and component B uniformly at a mass ratio of 10:...

Embodiment 2

[0035] A kind of preparation method of dealcohol condensation type two-component room temperature vulcanized silicone rubber building sealant, its preparation method is as follows:

[0036] (1) Add 80 parts by mass of 80000 mPa.s α, ω-dihydroxypolydimethylsiloxane, 30 parts of methylphenyl silicone oil and 60 parts of quartz powder into a high-speed planetary mixer, Under -0.1MPa, stir for 2.5h to obtain component A;

[0037] (2) In parts by mass, 80 parts of simethicone, 50 parts of propyl orthosilicate, 10 parts of polyethyl silicate, 15 parts of γ-aminopropyltriethoxysilane and isopropyl titanate Add 0.5 parts into a high-speed planetary mixer, and stir for 2 hours under a vacuum of -0.05MPa to prepare component B;

[0038] (3) Mix component A and component B uniformly at a mass ratio of 25:2.

Embodiment 3

[0040] A kind of preparation method of dealcohol condensation type two-component room temperature vulcanized silicone rubber building sealant, its preparation method is as follows:

[0041] (1) Add 60 parts of 80000 mPa.s α, ω-dihydroxypolydimethylsiloxane, 10 parts of dimethyl silicone oil, 20 parts of methylphenyl silicone oil and 80 parts of diatomaceous earth in parts by mass In a high-speed planetary mixer, under a vacuum of -0.05MPa, stir for 2 hours to prepare component A;

[0042] (2) In parts by mass, 70 parts of simethicone, 50 parts of ethyl orthosilicate, 25 parts of propyl orthosilicate, N-(β-aminoethyl)-γ-aminopropyltrimethoxy Add 20 parts of silane and 0.1 part of dibutyltin diacetate into a high-speed planetary mixer, and stir for 2.5 hours under a vacuum of -0.06MPa to prepare component B;

[0043] (3) Mix component A and component B uniformly at a mass ratio of 100:9.

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Abstract

The invention relates to a dealcoholized condensed dual-component room-temperature vulcanized silicone rubber building sealant and a preparation method thereof. The sealant comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100:(10-8), the component A includes a basic polymer, a plasticizer and a filling material, and the component B includes dimethicone oil, a cross-linking agent, a coupling agent and a catalyst. The sealant is improved in hot-water-resistant bonding performance on aluminium products and glass, is not affected by seasons, and high in construction operation stability.

Description

technical field [0001] The invention relates to a dealcoholization condensation type two-component room temperature vulcanized silicone rubber building sealant and a preparation method thereof, belonging to the technical field of silicone rubber materials. Background technique [0002] There are many types of silicone sealants, and different types of silicone sealants have great differences in temperature resistance, waterproof performance, insulation performance, optical performance, adhesion to different materials, and hardness. [0003] The mainstream varieties of sealants in the prior art are high and medium modulus structural sealants with sealing and bonding functions, which are used for structural bonding and sealing of glass, stone, aluminum curtain walls, glass daylighting roofs and metal structural engineering. Secondary bonding and sealing of central control glass and other bonding and sealing. However, the traditional one-component silicone rubber building seala...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J183/04C09J11/04C09J11/06C09K3/10
Inventor 阚新宇郭澄徐文俊王栋葆
Owner JIANGSU TIANCHEN NEW MATERIALS
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