Method for preparing ceramifiable silicon rubber refractory material by adopting radiation crosslinking process

A technology of radiation cross-linking and refractory materials, applied in the direction of plastic/resin/wax insulators, organic insulators, conductors, etc., can solve the problems of harmful gas and waste water environmental pollution, slow cross-linking speed of hot vulcanized rubber, and health threats to workers, etc. Achieve the effects of no three wastes discharge, convenient cross-linking degree, and improved mechanical and electrical properties

Active Publication Date: 2012-08-01
SICHUAN INST OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Because this method adopts the vulcanization method of introducing vulcanizing agent in silicone rubber, its disadvantages are: 1. The vulcanizing agent used has certain toxicity, which poses a threat to the health of the staff, and the vulcanizing agent produced in production The discharge of harmful gases and waste water will also pollute the environment
2. Using large-scale hot steam vulcanization equipment, the energy utilization rate i

Method used

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  • Method for preparing ceramifiable silicon rubber refractory material by adopting radiation crosslinking process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The composition of raw materials by weight is:

[0040] Methyl vinyl silicone rubber 100 parts

[0041] Fumed silica 50 parts

[0042] Cyclosilazane 3.5 parts

[0043] Aluminum hydroxide 45 parts

[0044] Chloroplatinic acid 5×10-5 share

[0045] Mix the above raw materials evenly to make clay-like silicone rubber, and then put it in a rubber extruder for extrusion processing at a temperature of 30°C to obtain the initial product of porcelain-able silicone rubber refractory material; Gamma rays are irradiated to obtain vitrified silicone rubber refractory products.

Embodiment 2

[0047] The composition of raw materials by weight is:

[0048] Methyl vinyl silicone rubber 100 parts

[0049] Fumed silica 50 parts

[0050] Cyclosilazane 3.5 parts

[0051] Calcium carbonate 25 parts

[0052] Aluminum hydroxide 20 parts

[0053] Chloroplatinic acid 5×10 -5 share

[0054] Mix the above raw materials evenly to make clay-like silicone rubber, and then place it in a rubber extruder for extrusion processing at a temperature of 25°C to obtain the initial product of porcelain-able silicone rubber refractory material; Electron beams are irradiated to obtain ceramic silicone rubber refractory products.

Embodiment 3

[0056] The composition of raw materials by weight is:

[0057] Methyl vinyl silicone rubber 100 parts

[0058] Fumed silica 50 parts

[0059] Cyclosilazane 3.5 parts

[0060] Aluminum hydroxide 25 parts

[0061] Magnesium hydroxide 20 parts

[0062] Chloroplatinic acid 5×10 -5 share

[0063] Mix the above raw materials evenly to make clay-like silicone rubber, and then place it in a rubber extruder for extrusion processing at a temperature of 40°C to obtain the initial product of the molded porcelain-able silicone rubber refractory material; Electron beams are irradiated to obtain ceramic silicone rubber refractory products.

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Abstract

The invention relates to a method for preparing a ceramifiable silicon rubber refractory material by adopting a radiation crosslinking process and belongs to the field of fire-resistant wires and cables. The method comprises the specific steps of: A-, evenly mixing 100 parts of methyl vinyl silicone rubber, 40-60 parts of ceramic powder, 40-65 parts of reinforcing filler, 3-5 parts of cyclosilazane and (5-20)*(10-5) parts of chloroplatinic acid to prepare daub-shaped silicon rubber; B-, extruding the daub-shaped silicon rubber to obtain a molded initial product of the ceramifiable silicon rubber refractory material; and C-, performing irradiation on the initial product by high-energy rays to obtain a product of the ceramifiable silicon rubber refractory material. The method for preparing the ceramifiable silicon rubber refractory material by adopting the radiation crosslinking process is convenient and energy-saving, is lower in cost, is easy in crosslinking degree control and is high in crosslinking efficiency. Toxic chemical additives are not used in the crosslinking process, and thus, the prepared vulcanizing silicone rubber is stable in physicochemical properties and is good in mechanical property and electrical property. The product is strong in weather fastness, ageing resistance and fatigue durability and is also longer in service life.

Description

technical field [0001] The invention relates to a vitrified silicon rubber refractory material and a preparation method thereof, in particular to a novel vitrified silicon rubber refractory material prepared by radiation crosslinking technology, which belongs to the field of fire-resistant wires and cables. Background technique [0002] Fire-resistant cables are widely used in important departments and public places such as high-rise buildings, subways, power plants, and nuclear power plants. Maintaining normal operation for a certain period of time will help rescue work and minimize casualties and property losses. [0003] At present, magnesium hydroxide mineral insulated fire-resistant cables are mostly used at home and abroad, and fire-resistant cables with mica tape wrapped with plastic or rubber composite insulation are used. The former has high manufacturing costs and is difficult to lay; the latter has certain instability. The mica tape is relatively thick, with high...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08K13/06C08K9/04C08K9/06C08K3/22C08K3/26C08K3/36C08K5/549C08K3/24C08J3/28C08J3/24H01B7/295H01B3/46B29C47/92B29C48/92
Inventor 陈浩陈竹平彭朝荣刘思阳张婧黄科陈屿恒赵星王静霞倪茂君
Owner SICHUAN INST OF ATOMIC ENERGY
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