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A kind of halogen-free flame-retardant heat-resistant silicone rubber composite material and preparation method thereof

A composite material and silicone rubber technology, applied in the field of silicone rubber, can solve the problems of only focusing on the flame retardant properties of materials, complex preparation methods, poor product stability, etc., and achieve the effects of excellent physical and mechanical properties, simple process routes, and stable product quality.

Active Publication Date: 2022-08-05
常州市沃科科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these patents only focus on the flame retardancy of the material, not the heat resistance of the material
[0004] In addition, by adding a variety of compound flame retardants and heat-resistant agents, the material has good physical and mechanical properties, flame retardancy and heat resistance, but its preparation method is very complicated, and the compound flame retardant requires After multi-step chemical reactions and expensive raw materials, it is necessary to prepare two components of A and B respectively in advance, and then mix them evenly at a ratio of 1:1 before use. The product has poor stability.

Method used

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  • A kind of halogen-free flame-retardant heat-resistant silicone rubber composite material and preparation method thereof
  • A kind of halogen-free flame-retardant heat-resistant silicone rubber composite material and preparation method thereof
  • A kind of halogen-free flame-retardant heat-resistant silicone rubber composite material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0048] The preparation method of the silicone rubber includes the steps of making the halogen-free flame-retardant and heat-resistant silicone rubber composite material into pieces through an open mill, filtering, packaging and the like to obtain the silicone rubber.

[0049] The high-performance halogen-free flame-retardant and heat-resistant silicone rubber material prepared by the method of the invention not only has excellent physical and mechanical properties, but also has excellent heat-resistant properties, and the thermal decomposition temperature is 50-100 DEG C higher than that of ordinary silicone rubber materials, which can meet the requirements of military industry. , high-speed rail and other special industries application requirements. The invention has simple process route and stable product quality, and is suitable for industrial production.

Embodiment 1

[0059] 500g of methyl vinyl silicone rubber with vinyl content of 0.04% and molecular weight of 800,000, 500g of methyl vinyl silicone rubber with vinyl content of 1.6% and molecular weight of 600,000, 300g of benzene into a 5L silicone rubber kneader Base silicone rubber (phenyl content 20%, molecular weight 600,000), then add 800g fumed silica, 1300g surface-modified aluminum hydroxide, 500g aluminum hypophosphite, 600g calcined iron oxide black, 200g nano-titanium dioxide, 250g in batches It is made of hydroxy silicone oil, 25 grams of silane coupling agent 172 and 25 grams of antioxidant 1010 and other processing aids. After each addition of fillers, the next material can be added after kneading into a group. Finally, the temperature is raised to 120 ° C and vacuumed for 1 hour. , Naturally cooled to below 50°C, out of the pot, filtered and packaged.

[0060] Take 200g of composite material, add 2.6g of double 2-4 vulcanizing agent and mix evenly in an open mill, press 2mm...

Embodiment 2

[0062] 600g of methyl vinyl silicone rubber with vinyl content of 0.04% and molecular weight of 800,000, 600g of methyl vinyl silicone rubber with vinyl content of 1.6% and molecular weight of 600,000, 300g of benzene into a 5L silicone rubber kneader Base silicone rubber (phenyl content 20%, molecular weight 600,000), then add 900g fumed silica, 1300g surface-modified aluminum hydroxide, 500g aluminum hypophosphite, 600g calcined iron oxide black, 200g nano-titanium dioxide, 250g in batches It is made of hydroxy silicone oil, 25 grams of silane coupling agent 172 and 25 grams of antioxidant 1010 and other processing aids. After each addition of fillers, the next material can be added after kneading into a group. Finally, the temperature is raised to 120 ° C and vacuumed for 1 hour. , Naturally cooled to below 50°C, out of the pot, filtered and packaged.

[0063] Take 200g of composite material, add 2.6g of double 2-4 vulcanizing agent and mix evenly in an open mill, press 2mm...

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Abstract

The invention relates to the technical field of silicone rubber, in particular to a halogen-free flame-retardant and heat-resistant silicone rubber composite material and a preparation method thereof. The raw materials of the halogen-free flame-retardant and heat-resistant silicone rubber composite material, in terms of mass percentage, include the following components: silicone rubber 20%-50%; silica 10%-30%; flame retardant 10%-50%; Heat resistant agent 5%-40%; processing aid 1%-10%. The high-performance halogen-free flame-retardant and heat-resistant silicone rubber material prepared by the invention not only has excellent physical and mechanical properties, but also has excellent heat-resistant properties, and the thermal decomposition temperature is 50-100°C higher than that of ordinary silicone rubber materials, which can meet the requirements of military industry, Application requirements of special industries such as high-speed rail. The invention has simple process route and stable product quality, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a halogen-free flame-retardant and heat-resistant silicone rubber composite material and a preparation method thereof. Background technique [0002] With its excellent physical and mechanical properties, electrical properties and chemical corrosion resistance, silicone rubber materials are more and more widely used in various fields of social life, especially in some special fields. The performance of silicone rubber materials can meet different performance requirements through the design of formulas. However, due to the relatively weak foundation of my country's silicone rubber industry, most products cannot meet the special performance requirements of military industry, aerospace and high-speed transportation, and need to be imported in large quantities. Subject to foreign technical blockades. Among them, high-performance halogen-free flame retardant heat-resistant sili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/04C08K7/26C08K3/22C08K3/32C08K13/06C08K13/04
CPCC08L83/04C08L2201/02C08L2201/22C08L2201/08C08L2205/025C08L2205/035C08K2003/2227C08K2201/011C08K2003/2241C08K2003/2275C08K7/26C08K3/22C08K3/32C08K13/06C08K13/04
Inventor 曹俊张继成秦克良郑亚森陈玲聪宋永琦
Owner 常州市沃科科技有限公司