Silicone rubber composition and preparation method thereof

A technology of silicone rubber composition and methyl vinyl silicone raw rubber, which is applied in the field of silicone rubber composition and its preparation, can solve the problems of not being resistant to ozone, difficult to protect materials, low toughness, etc., and achieve good weather resistance, good The effect of the shielding effect

Inactive Publication Date: 2017-07-07
成都德信安创新医疗技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patents CN86100457 and CN201310335803 disclose lead-containing X-ray protective materials. By adding lead or lead-containing compounds to the materials, the protective materials can be endowed with shielding properties for X-rays, but lead and its compounds have biological toxicity and environmental hazards. In addition, The lead-containing material has a large specificity, and the protective material prepared from it is heavy and will bring a great body load to the wearer
Chinese patents CN200410096790, CN200710175789, CN 200910059052, CN200910060849, CN200910086453, CN201010202804, CN201310364822, etc. all provide protective materials with good shielding effect on X-rays, but these materials such as butadiene rubber, styrene-butadiene rubber, and nitrile rubber are selected from natural, Acrylate rubber, ethylene propylene rubber, etc. are used as the base

Method used

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  • Silicone rubber composition and preparation method thereof
  • Silicone rubber composition and preparation method thereof
  • Silicone rubber composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] The silicone rubber composition of the present invention includes the following components by weight: 100 parts of methyl vinyl silicone rubber; 25-60 parts of reinforcing filler; 100-400 parts of X-ray absorber; 2-20 parts of treatment agent; 0.2 to 3 parts of crosslinking agent. In this embodiment, the silicone rubber composition uses 100 parts of methyl vinyl silicone rubber, 60 parts of reinforcing filler, 100 parts of X-ray absorber, 2 parts of treatment agent and 3 parts of crosslinking agent. composition.

[0028] Wherein, the molecular weight of the methyl vinyl silicone rubber is 200,000 to 800,000, and the vinyl content is 0.03% to 5%, and the methyl vinyl silicone rubber is used as the base material of the silicone rubber composition. In this embodiment, the molecular weight of the methyl vinyl silicone rubber is 400,000, and the vinyl content is 1.5%.

[0029] The reinforcing filler is one or more of silica powder, precipitation method white c...

Example Embodiment

[0034] Example 2

[0035] This embodiment is basically the same as embodiment 1, but the difference is that the silicone rubber composition uses 100 parts of methyl vinyl silicone rubber, 50 parts of reinforcing filler, 180 parts of X-ray absorber, 8 parts of The treatment agent and 2.3 parts of crosslinking agent. Wherein, the molecular weight of the methyl vinyl silicone rubber is 200,000, and the vinyl content is 3%. The reinforcing filler is a composition composed of fine silicon powder, aluminum hydroxide, calcium carbonate and diatomaceous earth, and the X-ray absorber is a composition composed of zinc oxide, neodymium oxide, praseodymium oxide, and barium sulfate, The treatment agent is realized by dimethyldiethoxy silane, and the crosslinking agent is realized by benzoyl peroxide and 2,4-dichlorobenzoyl peroxide.

[0036] When preparing the silicone rubber composition of the present invention, in the process of kneading, the kneading is performed at room temperature for 1...

Example Embodiment

[0037] Example 3

[0038] This example is basically the same as Example 1, but the difference is that the silicone rubber composition uses 100 parts of methyl vinyl silicone rubber, 40 parts of reinforcing filler, 260 parts of X-ray absorber, 12 parts of The treatment agent and 1.5 parts of crosslinking agent. Wherein, the molecular weight of the methyl vinyl silicone rubber is 500,000, and the vinyl content is 0.5%. The reinforcing filler is kaolin, the X-ray absorber is molybdenum disulfide, and the treatment agent is composed of hexamethyldisilazane, diphenylsiliconediol and dimethyldimethoxysilane In the composition, the crosslinking agent is a composition composed of tert-butyl peroxybenzoate, di-tert-butyl peroxide and dicumyl peroxide.

[0039] When preparing the silicone rubber composition of the present invention, during the kneading process, the kneading is first at room temperature for 2 hours, and then heated to 190°C and kneaded for 1 hour.

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Abstract

The invention discloses a silicone rubber composition. The silicone rubber composition is prepared from the following components in parts by weight: 100 parts of methyl vinyl silicone rubber; 25 to 60 parts of reinforcement filler; 100 to 400 parts of X-ray absorbent; 2 to 20 parts of processing agent; and 0.2 to 3 parts of cross-linking agent. The silicone rubber composition adopts the methyl vinyl silicone rubber as a base material to be combined with the reinforcement filler, the X-ray absorbent, the processing agent and the cross-linking agent to generate the silicone rubber composition, after being cured, the silicone rubber composition has good shielding and protective effect for X-rays, also has good weather resistance, mechanical strength and toughness, is conveniently made into various types of protective products and is suitable for being popularized to use.

Description

technical field [0001] The invention relates to a silicone rubber composition, in particular to a silicone rubber composition and a preparation method thereof. Background technique [0002] X-ray is an indispensable technical means in modern medical imaging examination, especially in interventional radiology procedures such as cardiovascular angiography and angioplasty and fine surgery. Obtain imaging data in patients in trauma situations. [0003] When X-rays irradiate the human body, they will interact with the body's cells, tissues, body fluids, etc., directly destroy some macromolecular structures in the body, and even directly damage the cell structure. In addition, X-rays can ionize water molecules in the body to form some free radicals, and damage the body through the indirect action of these free radicals. For patients, it is relatively safe and harmless to be exposed to X-ray radiation for a short time during treatment; but for medical staff, they need to be expos...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08K13/02C08K3/36C08K3/22C08K3/26C08K3/34C08K3/30C08K3/04
CPCC08K13/02C08K3/04C08K3/22C08K3/26C08K3/30C08K3/34C08K3/346C08K3/36C08K2003/221C08K2003/2227C08K2003/2296C08K2003/265C08K2003/3009C08K2003/3045C08K2201/014C08L2201/08C08L83/04
Inventor 武迪蒙高帅唐文睿
Owner 成都德信安创新医疗技术有限公司
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