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Less harmful nontoxic rubber automobile seal strip

A technology for automotive sealing strips and rubber, which is applied in vehicle parts, transportation and packaging, etc., and can solve problems such as difficulty in recycling and reuse.

Active Publication Date: 2009-03-25
ANHUI CHENYANG RUBBER & PLASTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the processing of rubber, such as weighing, mixing, semi-finished product molding, vulcanization, post-processing, storage, etc., due to processing needs, such as high-temperature heating, local overheating, etc., carcinogenic N-suboxides will inevitably be produced or released. Substances such as nitramine are mostly directly discharged into the air; in addition, rubber products are not easy to recycle after vulcanization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] The low-hazard and non-toxic rubber automobile sealing strip disclosed by the invention is mainly composed of 200±10 parts of EPDM rubber and 150±10 parts of carbon black; 20±2 parts of light superfine calcium carbonate and 30±3 parts of talcum powder As filler; high flash point paraffin oil or styrene / α-methylstyrene / vinyl toluene terpolymer 20±2 parts as softener; flame retardant aluminum hydroxide 10±1 parts; activator adopts 5±0.5 parts of zinc oxide and 2±0.2 parts of stearic acid are used together; 4±0.4 parts of polyethylene glycol with hydroxyl polar gene is used as a polar additive; 5±0.5 parts of calcium oxide is used as a neutralizer; sulfur-based 4 ± 0.4 parts of nitrogen-free vulcanized material; 0.3 ± 0.03 parts of α-tocopherol as inhibitor.

[0009] The above-mentioned activating agent adopts zinc oxide and stearic acid to be used together, and the zinc oxide with ultra-fine particle and high activity has a particle diameter of ≤2000 mesh.

[0010] In th...

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PUM

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Abstract

The invention provides a less-harmful nontoxic rubber vehicle sealing strip which has excellent processability and physical properties and belongs to an environment friendly sulfidizing system. Main raw materials are as follows: 200 plus or minus 10 portions of ethylene propylene diene methylene, and 150 plus or minus 10portions of carbon black; 20 plus or minus 2 portions of light super fine calcium carbonate and 30 plus or minus 3 portions of talc as fillers; 20 plus or minus 2 portions of high-flash paraffin oil or styrene / Alpha-methyl styrene / vinyl toluene terpolymer as a softener; 10 plus or minus 1 portions of aluminum hydroxide as a flame retardant; 5 plus or minus 0.5 portions of zinc oxide and 2 plus or minus 0.2 portions of stearic acid as active agents together; 4 plus or minus 0.4 portions of polyethylene glycol of a hydroxyl polar group as an additive; 5 plus or minus 0.5 portions of calcium oxide as a neutralizer; 4 plus or minus 0.4 portions of nitrogen-free sulfidation material which is mainly sulphur; and 0.3 plus or minus 0.03 portion of Alpha-tocopherol as an inhibitor. The less harmful nontoxic rubber vehicle sealing strip can not only reduce environmental pollution, but also maintain reasonable cost.

Description

technical field [0001] The invention relates to a rubber automobile sealing strip for automobiles whose main raw material is EPDM rubber, and a preparation method thereof. Background technique [0002] Ethylene-propylene-diene rubber (EPDM) is a terpolymer of ethylene, propylene and non-conjugated dienes. The main characteristic of EPDM is its superior resistance to oxidation, ozone and erosion. Since EPDM belongs to the polyolefin family, it has excellent vulcanization characteristics. Among all rubbers, EPDM has the lowest specific gravity. It can absorb large quantities of fillers and oils with little effect on properties. Inexpensive rubber compounds can thus be produced. Because of its good weather resistance and processability, most of the rubber used for sealing in the automotive industry uses EPDM, especially for extruded rubber sealing strips. [0003] In the prior art, the vulcanization system added during EPDM processing contains heavy metals such as lead, and...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/02C08K3/06C08K5/47C08K5/39C08K5/5398C08K3/22C08K5/09C08K5/1545B60R13/06
Inventor 周相庭
Owner ANHUI CHENYANG RUBBER & PLASTRIC CO LTD
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