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Automobile door/window sealing strip based on ethylene-propylene-diene rubber

A technology of EPDM rubber and sealing strip, applied in the field of automobile, can solve the problems of poor aging performance, aging and long production process of PVC sealing strip, and achieve dimensional stability, small friction coefficient and strong application value. Effect

Inactive Publication Date: 2014-04-16
成都昱阳鑫达实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PVC sealing strips have defects such as poor aging performance, heat resistance, and non-environmental protection. After being assembled on automobile doors and windows for a certain number of years, they will age and crack under sunlight, and cannot achieve a good sealing effect.
In the preparation process of thermosetting EPDM sealing strips, it needs to go through banbury mixer and long oven vulcanization, intermittent production, complex process, long production process, high energy consumption, large equipment investment, and has certain impact on the environment. Pollution, waste rubber strips or replaced rubber strips cannot be recycled and reused directly. They are discarded and piled up like waste tires, forming "black pollution". Colored products, etc.
In addition, the sealing strip made of thermoplastic elastomer based on SBS and SEBS has good elasticity at room temperature, but at high temperature, the heat resistance and weather resistance are slightly poor, and the elasticity is also deviated, and there is a problem of easy aging, and it is not suitable for automobile doors and windows. the seal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] The preparation method of the automobile door and window sealing strip based on EPDM rubber, the preparation steps are as follows:

[0063] 1) Weigh raw materials: Weigh raw materials according to the following parts by weight, 35-45 parts of EPDM rubber, 21-34 parts of polypropylene, 3.2-5.8 parts of paraffin oil, 30-40 parts of antimony trioxide, 11-12 parts of phenylene ether, 0.5-2 parts of anti-ultraviolet agent, 0.35-0.8 part of antioxidant, 0.5-2 parts of vulcanizing agent, 2-4 parts of auxiliary vulcanizing agent, 7-8 parts of talcum powder, 0.3-0.5 parts of colorant part, 10-15 parts of zinc borate, 0.4 part of calcium stearate, 5-10 parts of phosphoric acid ester;

[0064] 2) Compounding: Mix EPDM rubber, polypropylene, antioxidant, antiultraviolet agent, zinc borate, calcium stearate, talcum powder, decabromodiphenyl ether and antimony trioxide at room temperature in a stirring pot Mix and knead evenly, then add paraffin oil and phosphoric acid ester into th...

Embodiment 1

[0076] 35 parts of EPDM rubber, 21 parts of polypropylene, 3.2 parts of paraffin oil, 30 parts of antimony trioxide, 11 parts of decabromodiphenyl ether, 0.5 parts of anti-ultraviolet agent, 0.35 parts of antioxidant, 0.5 parts of vulcanizing agent, 2 parts of auxiliary vulcanization agent, 7 parts of talcum powder, 0.3 parts of coloring agent, 10 parts of zinc borate, 0.4 parts of calcium stearate, and 5 parts of phosphoric acid ester.

Embodiment 2

[0078] 45 parts of EPDM rubber, 34 parts of polypropylene, 5.8 parts of paraffin oil, 40 parts of antimony trioxide, 12 parts of decabromodiphenyl ether, 2 parts of anti-ultraviolet agent, 0.8 parts of antioxidant, 2 parts of vulcanizing agent, 4 parts of auxiliary vulcanization agent, 8 parts of talcum powder, 0.5 parts of coloring agent, 15 parts of zinc borate, 0.4 parts of calcium stearate, and 10 parts of phosphoric acid ester.

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PUM

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Abstract

The invention discloses an automobile door / window sealing strip based on ethylene-propylene-diene rubber. The automobile door / window sealing strip comprises ethylene-propylene-diene rubber, polypropylene, paraffin oil, antimony trioxide, decabromodiphenyl oxide, an ultraviolent-resistant agent, an antioxygen, a vulcanizing agent, an auxiliary vulcanizing agent, talcum powder, a coloring agent, zinc borate, calcium stearate and phosphoric acid ester. The automobile door / window sealing strip is small in friction coefficient, and favorable in elasticity, wearing resistance and sun-proof performance, has a certain flame retarding property and recoverability, and is particularly suitable for sealing an automobile door / window.

Description

technical field [0001] The invention belongs to the field of automobiles, and in particular relates to an automobile door and window sealing strip based on EPDM rubber. Background technique [0002] The sealing strip materials used in existing automobiles are mainly polyvinyl chloride, thermosetting EPDM rubber, silicone rubber and thermoplastic elastomers, among which polyvinyl chloride and thermosetting EPDM rubber materials account for the vast majority. PVC sealing strips have defects such as poor aging performance, heat resistance, and non-environmental protection. After being assembled on automobile doors and windows for a certain number of years, they will age and crack under sunlight, and cannot achieve a good sealing effect. In the preparation process of thermosetting EPDM sealing strips, it needs to go through banbury mixer and long oven vulcanization, intermittent production, complex process, long production process, high energy consumption, large equipment invest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/14C08K13/02C08K3/22C08K5/06C08K5/521C08K3/38C08K5/098C08K5/134C08K5/13C08K5/526B29C47/92B29C48/92
CPCC08K2201/014C08L23/16C08L2201/02C08L2205/03C08L23/14C08L91/06C08K13/02C08K3/2279C08K5/06C08K5/521C08K3/38C08K5/098B29C48/397B29C48/40B29C48/92B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 董彬
Owner 成都昱阳鑫达实业有限公司
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