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Environmental protection type SEBS thermoplastic elastic body sealing strip material and preparation method thereof

A technology of thermoplastic elastomers and sealing strips, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of heat resistance, hot water resistance, poor compression resistance, easy yellowing of appearance, high price, etc., and achieve elastic recovery Good, significant economic and social benefits, small investment effect

Inactive Publication Date: 2008-01-09
东莞市盛家橡塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are poor heat resistance, hot water resistance and compression resistance, easy to turn yellow in appearance, easy to stick to the mold during processing, easy to decompose when the control is not good, and expensive

Method used

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  • Environmental protection type SEBS thermoplastic elastic body sealing strip material and preparation method thereof

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Experimental program
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preparation example Construction

[0048] On the other hand, as shown in Figure 1, the present invention also provides a kind of preparation method of environment-friendly SEBS resin thermoplastic elastomer sealing strip material, comprises the following steps:

[0049]The step of weighing raw materials is to weigh the raw materials according to the determined parts by weight: 100 parts by weight of SEBS resin and its modified products, 75-125 parts by weight of rubber filler oil, 20-40 parts by weight of polypropylene, and 10-30 parts by weight of polyolefin elastomer , 150-250 parts of mineral filler, 0.4-0.8 parts by weight of lubricant, 0.45-0.60 parts by weight of anti-aging agent;

[0050] Mixing step, make SEBS resin and its modified products completely absorb the rubber filling oil, and then add it to the mixer together with other materials and mix evenly;

[0051] The granulation step is to extrude and granulate with a twin-screw extruder, and finally dry and pack. The temperature of each section of th...

example 1

[0054] The step of weighing the raw materials is to weigh the raw materials according to the determined weight parts: 100 parts by weight of SEBS resin, 75 parts by weight of naphthenic rubber filler oil, 20 parts by weight of homopolypropylene, 10 parts of ethylene-octene copolymer, talcum powder 150 parts, 0.20 parts by weight of ethylene bis stearamide, 0.10 parts by weight of zinc stearate, 0.10 parts by weight of polyethylene wax, tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] 0.2 parts by weight of pentaerythritol, 0.10 parts by weight of tris(2,4-di-tert-butylphenyl)phosphite, 0.10 parts by weight of 2-hydroxyl-4-n-octyloxybenzophenone, 2-(2'- Hydroxy-3', 5'-di-tert-butylphenyl)-5-chlorobenzotriazole 0.05 parts by weight;

[0055] In the mixing step, first make the SEBS resin fully absorb the rubber filling oil, and then add it to the mixer together with other materials and mix well;

[0056] The granulation step is to extrude and granulate with a twi...

example 2

[0058] The step of weighing the raw materials is to weigh the raw materials according to the determined weight parts: 90 parts by weight of SEBS resin, 10 parts by weight of maleic anhydride grafted SEBS, 100 parts by weight of paraffin-based rubber filler oil, 25 parts by weight of copolymerized polypropylene, EPDM 20 parts by weight of rubber, 175 parts by weight of calcium carbonate, 0.20 parts by weight of ethylene bisoleic acid amide, 0.20 parts by weight of calcium stearate, 0.20 parts by weight of polyethylene wax, β(3', 5'-di-tert-butyl-4 0.20 parts by weight of octadecyl '-hydroxyphenyl) propionate, 0.15 parts by weight of tris(2,4-di-tert-butylphenyl)phosphite, 0.10 parts by weight of 2-hydroxyl-4-n-octyloxybenzophenone Parts by weight, 0.05 parts by weight of 2-(2'-hydroxyl-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole;

[0059] In the mixing step, first make the SEBS resin and grafted SEBS fully absorb the rubber filling oil, and then add them to the mixer toget...

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Abstract

An evrionmental-protecting SEBS thermoplastic elastic sealing strip and its production are disclosed. It consists of SEBS resin and modifier 100 proportion, rubber filling oil 75-125 proportion, polypropylene 20-40 proportion, poly-olefine elastomer 10-30 proportion, mineral filler 150-250 proportion, lubricant 0.4-0.8 proportion, and anti-ageing agent 0.45-0.60 proportion. The process is carried out by: weighing, mixing and granulating to obtain final product. It's cheap, simplified, safe, convenient and efficient. It has excellent high / low temperature resistances and anti-ageing performance and can be used to manufacture vehicle, refrigirator and freezer.

Description

technical field [0001] The invention relates to a sealing strip material and a preparation method thereof, in particular to an environment-friendly SEBS thermoplastic elastomer sealing strip material and a preparation method thereof. Background technique [0002] In the past ten years, with the rapid development of my country's automobile, home appliance and construction industries, the demand for sealing strips has increased day by day. As far as the car is concerned, the sealing strip is a kind of accessory that uses the largest amount of rubber in the car except for the tire. Its main functions are waterproof, dustproof, shock absorption, sound insulation and sealing. In addition, it also requires a certain degree of comfort and decoration. In 2006, the output of automobiles in China exceeded 6 million, and the consumption of sealing strips was more than 300 million meters, equivalent to more than 50,000 tons of sealing strip materials. At present, my country has become ...

Claims

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Application Information

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IPC IPC(8): C09K3/10C08L53/02C08K5/20B29B9/12B29C47/40B29C47/92C08L23/12C08L23/08C08L83/00B29C48/40B29C48/92B29C48/95
CPCB29C48/04B29C48/40B29C48/95
Inventor 林峰肖望东
Owner 东莞市盛家橡塑科技有限公司
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