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Peroxidated heat-vulcanized silicone rubber resistant to irradiation and preparation method thereof

A thermally vulcanized silicone rubber, radiation-resistant technology, applied in the field of thermally vulcanized silicone rubber, high-strength peroxidized thermally vulcanized silicone rubber and its preparation, can solve the problems of cumbersome preparation process and complex rubber components, and achieve environmental adaptation Strong performance, good social and economic benefits, and good γ-ray absorption performance

Active Publication Date: 2011-08-24
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rubber components described in this patent are complex and the preparation process is cumbersome

Method used

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  • Peroxidated heat-vulcanized silicone rubber resistant to irradiation and preparation method thereof
  • Peroxidated heat-vulcanized silicone rubber resistant to irradiation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh the following components in parts by weight (kg): 100 parts of silicone rubber raw rubber (methyl vinyl silicone rubber, whose vinyl content is 0.01%-0.1% by weight, molecular weight above 500,000), anti- 20 parts of irradiation agent (cerium oxide), 60 parts of fumed silica (TS530 produced by Cabot Corporation of the United States), concentrated crosslinking agent (viscosity 1500mm 2 / s, 2.5 parts of polyvinyl silicone oil with Vi weight ratio content of 11.5%, 1.5 parts of vulcanizing agent (2,5-dimethyl-2,5-di-tert-butylperoxyhexane).

[0028] Firstly add the raw silicone rubber, fumed white carbon black and anti-radiation agent in the amount of components to the mixer in sequence, mix at room temperature for 30 minutes, then heat-treat the mixed material at 160°C for 1 hour, Then cool it down to room temperature, add the concentrated cross-linking agent and vulcanizing agent of the component amount, and then knead evenly to obtain a peroxidized heat-vulcanized...

Embodiment 2

[0030] The specific operation method is the same as that of Example 1, except that cerium oxide is replaced by yttrium oxide in the distribution ratio of the radiation-resistant agent components.

Embodiment 3

[0032] The specific operation method is the same as that of Example 1, except that cerium oxide is replaced by gadolinium oxide in terms of the ratio of the radiation-resistant agent components.

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Abstract

The invention discloses a peroxidated heat-vulcanized silicone rubber resistant to irradiation and a preparation method thereof. The peroxidated heat-vulcanized silicone rubber comprises 100 parts of silicon rubber, 10-60 parts of anti-irradiation agent, 40-70 parts of gaseous white carbon black, 2-7 parts of concentrated crosslinker and 0.5-2.5 parts of vulcanizing agent according to parts by weight, and which is characterized in that the anti-irradiation agent is rare earth oxide. The peroxidated heat-vulcanized silicone rubber resistant to irradiation is prepared from a main material of methyl vinyl silicon rubber by modification; the rubber has strong environmental suitability, and the stretch strength reaches more than 6MPa and the tear strength reaches more than 20KN / m after 500KGy of irradiation; the rubber can be used for producing various rubber products resistant to irradiation such as rubber cushions, sealing parts, buffer elements, distance sleeves, diaphragms, and can be widely applied to the conditions abundant in high-energy irradiation such as aerospace, nuclear industry, electronic communication, chemical industry, medicine and ship; thus, the rubber has very good economic benefit and promotional value.

Description

technical field [0001] The invention relates to a thermally vulcanized silicone rubber, in particular to a high-strength peroxidized thermally vulcanized silicone rubber with radiation resistance and a preparation method thereof, belonging to the technical field of rubber production. Background technique [0002] The existing rubber is exposed to high-energy radiation, which will cause a series of structural changes such as chain scission or cross-linking reactions in rubber macromolecules. The increase in the number of changes and the acceleration of the degree of change will further lead to various aging phenomena. , thus failing. Recently, with major aircraft manufacturing companies vigorously developing military and civilian aircraft, the demand for rubber products and rubber parts suitable for high-altitude environments has increased, but the existing rubber production technology can no longer meet people's needs for radiation-resistant rubber. . [0003] Silicone rub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L83/07C08K3/22
Inventor 冯圣玉卢海峰刁屾
Owner SHANDONG UNIV
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