Preparation method of high-performance mould-press type mixed silicone rubber

A technology for mixing silicone rubber and high performance, which is applied in the field of preparation of high-performance molding type mixing silicone rubber, and can solve the problems that mechanical properties cannot meet the needs and so on.

Inactive Publication Date: 2014-01-29
ZHEJIANG JOTEC NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the field of material application, it is not only required that silicone materials have good chemical properties, but also good physical properties. In the field of wire and cable accessories, there are high requirements for the mechanical properties of silicone rubber materials. The existing wires The mixed silicone rubber used in cable accessories has a tear strength of about 8KN / M, an elongation of about 800%, a tear strength of less than 30KN / M, and a heat aging permanent deformation of more than 15%. These parameters generally determine The scope of application and service life of rubber, but in the field of some high-end cable accessories products, the existing mechanical properties of these rubber materials are still far from meeting the needs

Method used

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  • Preparation method of high-performance mould-press type mixed silicone rubber

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Effect test

Embodiment 1

[0023] A kind of preparation method of high-performance molded type mixed silicone rubber: the total amount of methyl vinyl silicone rubber raw rubber is 350kg, wherein the vinyl content is respectively 0.04%, 0.3%, 5% methyl vinyl silicone rubber raw Rubber accounts for 60%, 35%, and 5% of the total raw rubber; the total amount of silicone oil additives is 15kg, hydroxyl silicone oil accounts for 85%, and low-hydrogen silicone oil accounts for 15%; the selected specific area is 300m 2 The white carbon black per gram is 120kg; knead the above raw materials evenly with a kneader, and then put the kneaded rubber material at room temperature for 6 hours; steam to raise the temperature of the rubber to 120°C, and the heating process is controlled within 1.5 hours; after the temperature of the rubber is raised, start vacuuming, the vacuum degree is controlled at -0.04MPa, the temperature of the rubber is controlled at 150°C, and the vacuuming time is controlled at 2 hours , after f...

Embodiment 2

[0026] A kind of preparation method of high-performance molded type mixed silicone rubber: the total amount of methyl vinyl silicone rubber raw rubber is 320kg, wherein the vinyl content is respectively 0.04%, 0.22%, 10% methyl vinyl silicone rubber raw Rubber accounts for 50%, 35%, and 15% of the total amount of raw rubber; the total amount of silicone oil additives is 11kg, of which hydroxyl silicone oil, dimethyldimethoxysilane, and low hydrogen-containing silicone oil each account for 50% of the total amount of silicone oil additives. 50%, 40%, 10%; the selected specific area is 200m 2 The amount of white carbon black per gram is 110kg; knead the above raw materials evenly with a kneader, and then put the kneaded rubber material at room temperature for 1 hour; steam to raise the temperature of the rubber to 100°C, and the heating process is controlled within 2 hours; after the temperature of the rubber is raised, start vacuuming, the vacuum degree is controlled at -0.02MPa...

Embodiment 3

[0029] A preparation method of high-performance molded mixed silicone rubber: the total amount of raw methyl vinyl silicone rubber is 380kg, and the vinyl content is respectively 0.08%, 0.22%, 3%, and 5% of methyl vinyl Silicone rubber raw rubber accounts for 60%, 20%, 10%, and 10% of the total raw rubber; the total amount of silicone oil additives is 18kg, of which dimethyldimethoxysilane, vinyl hydroxy silicone oil, and high hydrogen-containing silicone oil Each accounts for 80%, 15%, and 5% of the total amount of silicone oil additives; the selected specific area is 300m 2 The white carbon black per gram is 125kg; knead the above raw materials evenly with a kneader, and then put the kneaded rubber material at room temperature for 8 hours; steam to raise the temperature of the rubber to 125°C, and the heating process is controlled within 2 hours; after the temperature of the rubber is raised, start vacuuming, the vacuum degree is controlled at -0.06MPa, the temperature of th...

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Abstract

The invention relates to the field of silicone rubber materials and particularly relates to a preparation method of high-performance mould-press type mixed silicone rubber. The preparation method comprises the following steps: matching raw materials, kneading the raw materials, curing the rubber material, introducing steam, and performing vacuumizing treatment. The tensile strength, the tear strength, the elongation and other parameters of a rubber product produced by the silicone rubber after treatment by vulcanization are obviously improved, the thermal aging permanent deformation parameter is also in a relatively small range, and the comprehensive mechanical properties are further improved.

Description

technical field [0001] The invention relates to the field of silicone rubber materials, in particular to a method for preparing high-performance molded mixed silicone rubber. Background technique [0002] As a high-tech new chemical material, silicone has the properties of both inorganic materials and organic materials, and is widely used in aerospace, electrical and electronic, construction, transportation, chemical, textile, food, light industry, medical and other industries. With the continuous growth of the number and variety of silicones, the application fields have been continuously expanded, forming a unique and important product system in the field of new chemical materials. Many varieties are irreplaceable and indispensable by other chemicals. [0003] In the field of material application, it is not only required that silicone materials have good chemical properties, but also good physical properties. In the field of wire and cable accessories, there are high requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08L83/05C08K3/36C08K5/5419B29B7/00
Inventor 葛正根施建丰叶德芳
Owner ZHEJIANG JOTEC NEW MATERIAL TECH
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