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Double-component silicone structural sealant

A sealant, two-component technology, applied in the field of sealant, to achieve good aging resistance, good adhesion effect

Active Publication Date: 2012-02-15
山东宝龙达实业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent with the publication number CN1810907A discloses a silicone sealant with low water vapor transmission rate for insulating glass and its manufacturing method. The silicone sealant can ensure low water vapor transmission, but does not involve aging resistance and adhesion. Nodal

Method used

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  • Double-component silicone structural sealant
  • Double-component silicone structural sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Component A: 100 parts of α-ω-dihydroxy-terminated polysiloxane with a viscosity of 80,000 cp, 15 parts of alkyl-terminated dimethyl polysiloxane with a viscosity of 500 cp, and 5 parts of hydrophobic fumed silica, Add 70 parts of nano-active calcium carbonate to the planetary mixer and mix well.

[0029] B component: 50 parts of alkyl-terminated dimethyl polysiloxane with a viscosity of 500cp, 8 parts of carbon black, 10 parts of ethyl orthosilicate, 10 parts of polymethyltriethoxysilane, γ- 15 parts of aminopropyltriethoxysilane, 0.5 parts of ethyl diacetoacetate diisopropyl titanate, 1 part of dibutyl tin dilaurate, and 0.05 parts of ultraviolet absorber are added to the planetary mixer at negative pressure -0.08MPa Stir evenly.

[0030] At room temperature, the components A and B are mixed according to the weight ratio A:B=12:1 to obtain a two-component silicone structural sealant.

Embodiment 2

[0032] A component: 100 parts of α-ω-dihydroxy-terminated polysiloxane with a viscosity of 50000cp, 10 parts of alkyl-terminated dimethylpolysiloxane with a viscosity of 800cp, 8 parts of hydrophobic fumed silica, Add 80 parts of nano-active calcium carbonate to the planetary mixer and mix well.

[0033] B component: 50 parts of alkyl-terminated dimethyl polysiloxane with a viscosity of 800cp, 8 parts of carbon black, 10 parts of propyl orthosilicate, 10 parts of polymethyltriethoxysilane, γ- (2.3-Glycidoxy) 15 parts of propyltrimethoxysilane, 0.5 parts of ethyl diacetoacetate diisopropyl titanate, 1.5 parts of dibutyl tin dilaurate, 0.1 part of UV absorber added to the planetary mixer Stir evenly under negative pressure -0.08MPa.

[0034] At room temperature, the components A and B are mixed according to the weight ratio A:B=12:1 to obtain a two-component silicone structural sealant.

Embodiment 3

[0036] Component A: 100 parts of α-ω-dihydroxy-terminated polysiloxane with a viscosity of 80,000 cp, 10 parts of alkyl-terminated dimethyl polysiloxane with a viscosity of 100 cp, and 5 parts of hydrophobic fumed silica, Add 72 parts of nano-active calcium carbonate to the planetary mixer and stir evenly.

[0037] B component: 50 parts of alkyl-terminated dimethyl polysiloxane with a viscosity of 100 cp, 10 parts of carbon black, 10 parts of methyl trimethoxysilane, 10 parts of polymethyl triethoxy silane, N- Add 15 parts of β-(aminoethyl)-γ-aminopropyl trimethoxysilane, 0.5 parts of ethyl diacetoacetate diisopropyl titanate, 1.5 parts of dibutyl tin dilaurate, and 0.1 part of ultraviolet absorber. Stir evenly in the planetary mixer under negative pressure -0.08MPa.

[0038] At room temperature, the components A and B are mixed according to the weight ratio A:B=12:1 to obtain a two-component silicone structural sealant.

[0039] Through the verification test, it is known that the ...

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Abstract

The invention discloses a double-component silicone structural sealant for sealing insulating glass, and belongs to the technical field of sealants. The sealant provided by the invention comprises a component A and a component B, wherein the component A contains the following ingredients of: by weight, 100 parts of alpha-omega-dihydroxyl-terminated polysiloxane, 10-15 parts of alkyl-terminated dimethyl polysiloxane and 75-88 parts of a filler; the component B contains the following ingredients of: by weight, 50 parts of alkyl-terminated dimethyl polysiloxane, 8 parts of carbon black, 20 parts of an alkoxysilane crosslinking agent, 15.5 parts of a coupling agent, 1-1.5 parts of a catalyst and 0.05-1 part of an ultraviolet absorbent. The double-component silicone structural sealant has good aging resistance and bonding performance.

Description

Technical field [0001] The invention relates to the technical field of sealants, in particular to a two-component silicone structural sealant for sealing hollow glass. Background technique [0002] Insulating glass is generally recognized as an energy-saving and environmentally friendly product due to its heat insulation, heat preservation, sound insulation, and anti-condensation characteristics. The sealing performance and structural stability of the insulating glass system are related to the sealant used. At present, most of the cementing processes in the production of insulating glass use two-pass sealing technology. Among them, the first seal is the inner seal, using butyl glue with low water vapor permeability; apply the butyl glue to both sides of the hollow glass partition frame by using a hot melt gluer, and the butyl glue can Block moisture, dry gas cavity, and can play a role in sealing and pre-setting the glass. The second seal is the outer seal, usually three types...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J183/04C09J11/04C09J11/06C09K3/10C03C27/10
Inventor 曾庆铭
Owner 山东宝龙达实业集团有限公司
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