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An acidic silicone sealant

A technology of sealant and acid silicon, which is applied in the direction of adhesives, adhesive additives, and other chemical processes, can solve the problem of discoloration of titanium-based catalysts, and achieve the effect of fast curing speed and stable storage

Inactive Publication Date: 2011-12-14
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

[0004] In order to solve the above problems, some studies have used titanium-based catalysts in acidic silicone sealants, but titanium-based catalysts have the following disadvantages: 1) titanium-based catalysts are slower than tin-based catalysts; 2) titanium-based catalysts are easy to form complexes and discoloration

Method used

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  • An acidic silicone sealant
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Examples

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Embodiment Construction

[0025] In order to understand the present invention in depth, the present invention will be described in detail below in conjunction with specific examples.

[0026] In the following examples, all viscosities are measured at 25°C, and the examples are operated at room temperature unless otherwise specified, and all ratios are weight ratios unless otherwise specified.

[0027] Components in the paste in table 1 and the distribution ratio of each component

[0028]

[0029] Add the components in the ratio shown in Table 1 into a high-speed disperser, stir and mix for 90-150 minutes under the condition that the vacuum degree is not less than -0.08MPa, and obtain a uniformly dispersed paste.

[0030] According to the catalyzer shown in Table 2 and the usage amount, add the catalyzer to the paste. Catalyst was added on a paste to 100 basis.

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Abstract

The invention discloses a tin-free catalytic acidic silicone sealant and belongs to the technical field of silicone sealing. The sealant comprises the following components in parts by weight: 50-80 parts of dyhydroxy end capping alpha-omega-polysiloxane, 2-10 parts of cross linking agent, 2-15 parts of filler, 0.1-0.2 part of catalyst, 1-20 parts of plasticizer and 0-5 parts of conglutination accelerant. The acidic silicone sealant has the advantages of stable storage and high curing speed.

Description

technical field [0001] The invention relates to the technical field of silicone sealant, in particular to a tin-free catalytic acidic silicone sealant. Background technique [0002] Silicone sealant is a new type of elastic sealing building material developed in recent years. It is used as on-site filling and bonding joints to cure at room temperature. With the continuous development of the modernization process of urban buildings, the continuous improvement of urban architectural design and construction technology, and the continuous improvement of building decoration grades, the consumption of silicone sealants in the process of building construction and home decoration continues to increase, and its industrialization has also been recognized by the state. encouragement and support. [0003] The Chinese patent whose publication number is CN1733841A discloses a low-cost RTV silicone rubber, the Chinese patent whose publication number is CN101982516A discloses a high-perfor...

Claims

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Application Information

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