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High-density room temperature vulcanization two-component silicone sealant used in nuclear power station and preparation process thereof

A technology of silicone sealant and room temperature vulcanization, which is applied in the direction of adhesives, other chemical processes, chemical instruments and methods, etc., can solve the problems of lack of radiation resistance, achieve short preparation time, excellent radiation resistance, and simple preparation process Effect

Active Publication Date: 2014-06-18
镇江亿致能源科技孵化器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the silicone rubber currently used is basically used in construction and other fields, and does not have strong radiation resistance.

Method used

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  • High-density room temperature vulcanization two-component silicone sealant used in nuclear power station and preparation process thereof
  • High-density room temperature vulcanization two-component silicone sealant used in nuclear power station and preparation process thereof
  • High-density room temperature vulcanization two-component silicone sealant used in nuclear power station and preparation process thereof

Examples

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Embodiment Construction

[0067] The present invention will be further described below in conjunction with the examples, but the protection scope of the present invention is not limited by the examples.

[0068] The high-density room temperature vulcanizing two-component silicone sealant used in nuclear power plants in this embodiment includes component A and component B, wherein the specific composition of component A and component B is shown in Table 1 in parts by weight. .

[0069] Table 1 The ratio of component A and component B in this example

[0070]

[0071] Under the component distribution ratio of above-mentioned table 1, research is carried out for each component of this embodiment:

[0072] (1) Base rubber The base rubber of the high-density RTV two-component silicone sealant prepared in this example uses vinyl-terminated polydimethylsiloxane (ie, vinyl silicone oil) as the base material, and its molecular structure is :

[0073]

[0074] The molecular structure o...

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Abstract

The invention discloses a high-density room temperature vulcanization two-component silicone sealant used in a nuclear power station and a preparation process thereof. The two-component silicone sealant comprises a component A and a component B, wherein the component A comprises 200 to 280 weight parts of vinyl silicone oil with the viscosity of 1,000 to 10,000mPa.s, 15 to 35 weight parts of vinyl phenyl silicone oil with the viscosity of 200 to 2,000mPa.s, 210 to 300 weight parts of 300 to 1,000-mesh quartz sand, 450 to 600 weight parts of 300 to 1,000-mesh iron powder and 0.3 to 1 weight part of Pt catalyst; the component B comprises 180 to 250 weight parts of vinyl silicon oil with the viscosity of 1,000 to 10,000mPa.s, 210 to 300 weight parts of 300 to 1,000-mesh quartz sand, 450 to 600 weight parts of 300 to 1,000-mesh iron powder, 5 to 20 weight parts of hydrogen-containing silicone oil containing 1.0 to 1.5 percent hydrogen and 22 to 35 weight parts of hydrogen-containing silicone oil containing 0.2 percent hydrogen; and during use, the mass ratio of the component A to the component B is 1:0.9-1.1. The preparation process is simple and practical; and tests prove that various kinds of performance such as fireproof performance and irradiation-resisting performance of the two-component silicone sealant meets using standards of the nuclear power station.

Description

technical field [0001] The invention relates to a high-density room temperature vulcanized two-component silicone sealant for nuclear power plants and a preparation process thereof. Background technique [0002] Silicone polymer materials have many unique and valuable properties, such as high and low temperature resistance, weather resistance, aging resistance, electrical insulation, ozone resistance, hydrophobicity, flame retardancy, etc., which cannot be compared and replaced by other organic polymer materials, so It has been widely used in aerospace, electronics, light industry, chemical industry, textile, machinery, construction, agriculture, transportation, medical and health, people's daily life and so on. [0003] Silicone polymer is a semi-inorganic polymer compound whose main chain is composed of silicon-oxygen bonds alternately, and its side chain is composed of silicon and organic groups. Due to its special structure, it has many excellent properties that other m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C09J183/05C09J11/04C09K3/10
Inventor 江波葛巨龙苟渊戴金华
Owner 镇江亿致能源科技孵化器有限公司