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Silicone rubber sealing pad having low permanent compression set value and preparation method thereof

A permanent deformation, low phenyl silicone rubber technology, used in the field of rubber gaskets, can solve the problems of poor sealing performance, large compression set, product failure, etc., to achieve small compression set, low compression set, compressibility and Good resilience effect

Inactive Publication Date: 2016-07-27
ANHUI JINGYI GLASS MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of science and technology and industry, the performance requirements of silicone rubber sealing materials are getting higher and higher. The silicone rubber gaskets on the existing market have the disadvantage of large compression set, and the compression set amount reaches more than 30%. During use, the sealing performance of the product is poor, which can easily lead to product failure

Method used

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  • Silicone rubber sealing pad having low permanent compression set value and preparation method thereof

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Embodiment Construction

[0014] A low compression set silicone rubber gasket made of the following raw materials by weight (kg): low phenyl silicone rubber 43, acrylate rubber 37, isoprene rubber 19, 4,4'-diaminobiphenyl 5, Praseodymium naphthenate 3, silicon calcium magnesium whisker 14, accelerator DTDM2.5, accelerator CZ1.5, accelerator CPB0.8, carbon black N77422, carbon black N33020, 1,1-bis(tert-butyl peroxide base)-3,3,5-trimethylcyclohexane 4, nano palygorskite 17, ethylene glycol diacrylate 5, basic lead silicate 3, zinc stearate 2, petrolatum 6, antioxidant 4010NA1 , antiaging agent 22462, modifier 17;

[0015] The preparation method of the modifier is as follows: (1) take the following raw materials in weight (kg): sea ball stone 18, needle coke 11, polymerized ferrophosphorus powder 14, nanometer aluminum titanate 10, methylene dinaphthalene sulfonate Sodium sulfosuccinate 3.5, sodium dioctyl sulfosuccinate 2, cetearyl glucoside 2, polypropylene glycol 2007, tri-n-butylamine 6, octyldodec...

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Abstract

The invention discloses a silicone rubber sealing pad having low permanent compression set value and a preparation method thereof.The silicone rubber sealing pad is prepared from low phenyl silicone rubber, acrylate rubber, isoprene rubber, 4,4'-diamino biphenyl, praseodymium naphthenate, silicon calcium magnesium crystal whiskers, a accelerant DTDM, a accelerant CZ, a accelerant CPB, carbon black N774, carbon black N330, 1,1-bis(tert butyl peroxyl)-3,3,5-trimethyl-cyclohexane, nano palygorskite, cobalt naphthenate, lead silicate white, zinc stearate, vaseline, an antiager 4010 NA, an antiager 2246 and a modifier.The prepared silicone rubber sealing pad has good compressibility and resilience and small permanent compression set, does not produce permanent change when being exposed at higher temperature, can have original mechanical properties of rubber after being put back at the room temperature and meanwhile has excellent abrasion resistance, corrosion resistance, aging resistance and heat resistance and other properties.

Description

technical field [0001] The invention relates to a rubber sealing gasket, in particular to a low compression permanent deformation silicone rubber sealing gasket and a preparation method thereof. Background technique [0002] Silicone rubber has outstanding high and low temperature resistance, maintains good elasticity in the temperature range of -70°C to +260°C, is resistant to ozone, weathering and aging, and has excellent properties such as waterproof, flame retardant, high temperature resistance, electrical conductivity, and oil resistance. Performance, suitable for making sealing gaskets required in thermal mechanisms, such as sealing gaskets, valve pads, oil seals (suitable for water media), etc. Special silicone rubber can be used to make oil seals. With the rapid development of science and technology and industry, the performance requirements of silicone rubber sealing materials are getting higher and higher. The silicone rubber gaskets on the existing market have the...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L33/04C08L9/00C08K13/06C08K7/10C08K5/14C08K5/103C08K3/34C08K5/098
CPCC08K2201/011C08K2201/014C08L83/04C08L2205/03C08L33/04C08L9/00C08K13/06C08K7/10C08K5/14C08K5/103C08K3/34C08K5/098C08K3/04
Inventor 吴杰芳
Owner ANHUI JINGYI GLASS MACHINERY
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