Foamed rubber seal strip

A sponge rubber and sealing strip technology, applied in the field of rubber production, can solve the problems of endangering the health of employees, polluting the environment, carcinogenicity, etc., and achieve the effect of ensuring health and protecting the environment

Active Publication Date: 2013-06-05
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that carcinogenic substances will be produced or released during the rubber vulcanization process, which will pollute the environment and endanger the health of employees

Method used

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Embodiment Construction

[0020] It should be noted that the parts in the present invention are all parts by mass.

[0021] The embodiment of the present invention provides a sponge rubber sealing strip, which comprises the following raw materials in parts by mass: 100 parts of EPDM rubber, 5-9 parts of active zinc oxide, 1-2 parts of stearic acid, 60-80 parts of carbon black, 55-75 parts of high flash point paraffin oil, 30-50 parts of heavy calcium carbonate, 3-5 parts of hygroscopic agent, 1.5-2.5 parts of dialkyl dithioamidate and dibenzyl 1-2 parts of zinc dithiocarbamate.

[0022] The dialkyl dithioamidate ZAT-60 and zinc dibenzyl dithiocarbamate ZBEC-75 are used as vulcanization accelerators for rubber crosslinking, which play the role of main accelerators and will not It produces amine nitrite, which is an environmentally friendly vulcanization system, making sponge rubber a non-toxic and environmentally friendly material.

[0023] Preferably, the sponge rubber sealing strip of the present in...

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Abstract

The invention relates to the technical field of rubber production, and especially relates to a nontoxic low-harm foamed rubber seal strip. The foamed rubber seal strip comprises the following raw materials, by mass, 100 parts of ternary ethylene propylene rubber, 5-9 parts of activated zinc oxide, 1-2 parts of stearic acid, 60-80 parts of carbon black, 55-75 parts of high-flash-point paraffin oil, 30-50 parts of heavy calcium carbonate, 3-5 parts of a moisture acceptor, 1.5-2.5 parts of dialkyl dithiophosphosphoroamidate and 1-2 parts of zinc dibenzyl dithiocarbamate. The use of dialkyl dithiophosphosphoroamidate and zinc dibenzyl dithiocarbamate as a vulcanization promoter makes no carcinogenic nitrite amine substances be generated in the reaction process and foamed rubber become nontoxic and environmentally-friendly, so the environment is protected, and the health of a worker is guaranteed.

Description

technical field [0001] The invention relates to the technical field of rubber production, in particular to a non-toxic and low-hazard sponge rubber sealing strip. Background technique [0002] The sponge rubber material on the car door seal, the car door seal is currently mainly made of foamed sponge seals produced by EPDM rubber, installed on the car door sheet metal, and squeezed together with the door frame to seal when the door is closed It mainly plays the role of door sealing, dustproof, shockproof and noise prevention. It is an indispensable part of the car door. The production of the existing door sealing strip is to add chemical foaming agent to EPDM rubber for vulcanization and foaming Prepared sponge formulation. [0003] EPDM is a terpolymer of ethylene, propylene, and non-conjugated dienes. The vulcanization formulation system of the traditional sponge formula contains a part of heavy metal-containing substances such as nitrosamines. During the processing of ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08L71/08C08K13/02C08K5/5399C08K5/39C08K3/22C08K5/09C08K3/04C08K3/26C08K5/31C08K5/47C08J9/10
Inventor 柳延波冯静帅郝伟刚王中国吕占有姚松张冰刘云张鹏李漫
Owner GREAT WALL MOTOR CO LTD
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