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High-elasticity-recovery-rate silicone elastic sealant for hollow glass and preparation method of silicone elastic sealant

An elastic sealing and high-elasticity technology, applied in the field of sealants, can solve problems such as lack of satisfaction, and achieve the effects of low volatility, good weather resistance, and improved elasticity and strength

Active Publication Date: 2016-09-21
GUANGZHOU JOINTAS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current standard "JG / T 471 Elastic Sealant for Hollow Glass for Architectural Doors, Windows and Curtain Walls" stipulates that the elastic recovery rate of insulating glass silicone glue for doors, windows and curtain walls should be greater than 95%, but the current market, especially domestic manufacturers, hardly meets this requirement. standard product

Method used

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  • High-elasticity-recovery-rate silicone elastic sealant for hollow glass and preparation method of silicone elastic sealant
  • High-elasticity-recovery-rate silicone elastic sealant for hollow glass and preparation method of silicone elastic sealant
  • High-elasticity-recovery-rate silicone elastic sealant for hollow glass and preparation method of silicone elastic sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A high elastic recovery rate silicone sealant for insulating glass, which is composed of the following raw materials in parts by weight:

[0044] Component A: 30 parts of α,ω-dihydroxypolydimethylsiloxane with a viscosity of 80000mmPa.s at 25°C and α,ω-dihydroxypolydimethylsiloxane with a viscosity of 5000mmPa.s at 25°C 60 parts, the viscosity is 350mm 2 / s 20 parts of simethicone oil and 150 parts of calcium carbonate were added into a high-speed planetary mixer and stirred evenly.

[0045] Component B: 90 parts of silane crosslinking agent oligomers containing formula I and formula II, 40 parts of organosilane coupling agent containing formula III, formula IV and formula V, 0.5 parts of dibutyltin dilaurate, Viscosity is 350mm 2 / s 30 parts of simethicone oil and 130 parts of carbon black are added to the planetary mixer at a vacuum of 0.08MPa and stirred evenly.

[0046] At room temperature, mix the two components A and B according to the mass ratio A:B=15:1 befor...

Embodiment 2

[0056] A high elastic recovery rate silicone sealant for insulating glass, which is prepared from the following raw materials in parts by weight:

[0057] Component A: 40 parts of α,ω-dihydroxypolydimethylsiloxane with a viscosity of 80000mmPa.s at 25°C, and α,ω-dihydroxypolydimethylsiloxane with a viscosity of 5000mmPa.s at 25°C 70 parts, the viscosity is 350mm 2 / s 30 parts of simethicone oil and 180 parts of calcium carbonate were added into a high-speed planetary mixer and stirred evenly.

[0058] Component B: 100 parts of silane crosslinking agent oligomers containing formula I and formula II, 50 parts of organosilane coupling agent containing formula III, formula IV and formula V, 0.8 parts of dibutyltin dilaurate, Viscosity is 350mm 2 / s 38 parts of simethicone oil and 135 parts of carbon black were added into the planetary mixer at a vacuum of 0.095 MPa and stirred evenly.

[0059] At room temperature, mix the two components A and B according to the mass ratio A:B=1...

Embodiment 3

[0069] A high elastic recovery rate silicone sealant for insulating glass, which is prepared from the following raw materials in parts by weight:

[0070] Component A: 35 parts of α,ω-dihydroxypolydimethylsiloxane with a viscosity of 80000mmPa.s at 25°C, and α,ω-dihydroxypolydimethylsiloxane with a viscosity of 5000mmPa.s at 25°C 65 parts, the viscosity is 350mm 2 / s 25 parts of simethicone oil and 200 parts of calcium carbonate were added into a high-speed planetary mixer and stirred evenly.

[0071] Component B: 95 parts of silane crosslinking agent oligomers containing formula I and formula II, 45 parts of organosilane coupling agent containing formula III, formula IV and formula V, 0.6 parts of dibutyltin dilaurate, Viscosity is 350mm 2 / s 35 parts of simethicone oil and 133 parts of carbon black are added into the planetary mixer at a vacuum of 0.09MPa and stirred evenly.

[0072] At room temperature, mix the two components A and B according to the mass ratio A:B=18:1 ...

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Abstract

The invention discloses a high-elasticity-recovery-rate silicone elastic sealant for hollow glass and a preparation method of the silicone elastic sealant. The silicone elastic sealant is mainly used for secondary sealing of the hollow glass. The silicone elastic sealant is characterized by containing a component A and a component B, wherein the mass ratio of A to B is (15-18):1. The preparation process comprises the following steps that alpha,omega-dyhydroxyl polydimethylsiloxane, inorganic filler and dimethicone are stirred to be uniform in a high-speed planetary stirring mechanism, and the component A is obtained; the component B is prepared from dimethicone, inorganic filler, an organosilicone cross-linking agent, a silane coupling agent, dibutyltin dilaurate and a titanium complex. In the using process, the component A and the component B are mixed to be uniform at room temperature according to the mass ratio. The silicone elastic sealant has good strength, elasticity and adhesion and excellent aging resistance, the elasticity recovery rate of the silicone elastic sealant is as high as 96%, and the service life of the hollow glass sealant can be greatly prolonged.

Description

technical field [0001] The invention relates to a sealant, in particular to a silicone elastic sealant with a high elastic recovery rate and a preparation method thereof, belonging to the technical field of sealants, and the sealant is mainly used for bonding and sealing of building doors, windows and curtain walls. Background technique [0002] With the prefabrication, high-rise, light weight of the construction industry, the adoption of full-view systems and large-scale frame hanging panels, and the requirements for high-quality bonding and sealing of component joints and expansion joints in various industrial fields, it is increasingly shown The significance and function of medium and high-grade elastic sealants. [0003] As a new type of building material, insulating glass is expected to have an annual domestic output of 90 million square meters in the middle of this century, and the market demand for related sealants will increase by 5-7 times. [0004] The development...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J183/04C09J11/04C09J11/06C09K3/10
CPCC08L2205/02C08L2205/025C08L2205/035C09J11/04C09J11/06C09J183/06C09K3/10C09K2003/1053C08L83/06C08L83/04C08K13/02C08K2003/265C08K5/5419C08K3/04C08K5/544
Inventor 谢丽莎林坤华陈中华
Owner GUANGZHOU JOINTAS CHEM
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