Silicone rubber composition and preparation method thereof

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...

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 material. The molecules of these rubbers are based on carbon-carbon bonds (C-C) as the main chain structure, and the C-C bonds have low bond energy and poor weather resistance.

Especially when disinfecting protective materials, the high-efficiency ozone disinfection method is usually used, but the above-mentioned materials are generally not resistant to ozone, and will be destroyed when exposed to ozone for a short time

Chinese patent CN200910185028 uses epoxy resin as the matrix resin to prepare radiation protection materials, which have good mechanical and radiation resistance properties, but the epoxy resin has high hardness and low toughness after curing, and it is difficult to make a protective material that fits well with the human body. Material

However, there are few reports on the use of silicone rubber in the field of radiation protection in patents at present.

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