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Fireproof and irradiation-resisting room temperature vulcanization two-component silicone foam sealant used in nuclear power station and preparation process thereof

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

Active Publication Date: 2013-05-29
HAILONG EMERSON ZHENJIANG ENERGY TECH
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  • 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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  • Fireproof and irradiation-resisting room temperature vulcanization two-component silicone foam sealant used in nuclear power station and preparation process thereof
  • Fireproof and irradiation-resisting room temperature vulcanization two-component silicone foam sealant used in nuclear power station and preparation process thereof
  • Fireproof and irradiation-resisting room temperature vulcanization two-component silicone foam 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 two-component silicone foam 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 specific proportions of component A and component B in this example

[0070]

[0071] The radiation-resistant sealing foam prepared in this example is a microporous spongy foam formed by foaming and vulcanizing at room temperature with hydroxyl silicone oil as the base material, vinyl silicone oil as the auxiliary, and hydrogen-containing silicone oil as the foaming agent. Elastic foam. Its reaction formula is as follows:

[0072]

[0073] Under the component distribution ratio of above-mentioned table 1, research is carried out for each...

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Abstract

The invention discloses a fireproof and irradiation-resisting room temperature vulcanization two-component silicone foam sealant used in a nuclear power station and a preparation process thereof. The two-component silicone foam sealant comprises a component A and a component B, wherein the component A comprises 560 to 700 weight parts of hydroxyl silicone oil with the viscosity of 1,000 to 10,000mPa.s, 210 to 300 weight parts of 300 to 2,000-mesh quartz sand, 1 to 50 weight parts of carbon black and 1 to 4 weight parts of Pt catalyst; the component B comprises 230 to 340 weight parts of high-viscosity hydroxyl silicone oil with the viscosity of 5,000 to 15,000mPa.s, 210 to 260 weight parts of vinyl silicone oil with the viscosity of 1,000 to 10,000mPa.s, 40 to 55 weight parts of vinyl phenyl silicone oil with the viscosity of 200 to 2,000mPa.s, 90 to 120 weight parts of hydrogen-containing silicone oil containing 1.0 to 2.5 percent hydrogen, 0 to 34 weight parts of auxiliary foaming agent, 260 to 330 weight parts of 300 to 2,000-mesh quartz sand; and during use, the mass ratio of the component A to the component B is 1:0.9-1.1. The preparation process is relatively simple; and tests prove that various kinds of performance such as fireproof performance and irradiation-resisting performance of the two-component silicone foam sealant meets using standards of the nuclear power station.

Description

technical field [0001] The invention relates to a fireproof and radiation-resistant room temperature vulcanized two-component silicone foam sealant for nuclear power plants and a preparation process thereof. Background technique [0002] Silicone polymer is a semi-inorganic polymer compound whose main chain is composed of silicon-oxygen bonds alternately, and its side chains are composed of silicon and organic groups. Due to its special structure, it has many excellent properties that other materials cannot have at the same time, such as excellent high temperature resistance and low temperature resistance, excellent electrical insulation and chemical stability, good aging resistance, and outstanding surface Active, hydrophobic and moisture-proof and physiologically inert, etc. Silicone foam combines the characteristics of silicone polymer and foam plastic, so it not only has the excellent characteristics of the above-mentioned silicone polymer, but also has good physical pr...

Claims

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Application Information

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IPC IPC(8): C08L83/06C08L83/07C08L83/05C08K3/36C08K3/04C08J9/06C09K3/10
Inventor 江波葛巨龙苟渊戴金华
Owner HAILONG EMERSON ZHENJIANG ENERGY TECH
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