Odorless automobile sealing strip and preparation method thereof

An automotive sealing strip, odorless technology, applied in the field of auto parts, can solve problems such as side effects of human health, and achieve the effects of improving cross-linking degree, high elongation, and preventing sticking rollers

Pending Publication Date: 2021-01-22
ZHEJIANG XIANTONG RUBBER & PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the automotive sealing strip materials are made of EPDM as the main raw material through vulcanization and cross-linking process, but H will be produced during the cross-linking process. 2 S, NH 4 and other gases, the pungent odor produced by the volatilization of these gases has side effects on human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The invention discloses a method for preparing an odorless automobile sealing strip, which comprises the following steps:

[0033] (1) Add EPDM rubber, reinforcing carbon black, environmental protection oil, heavy calcium / active calcium, zinc oxide, stearic acid, surfactant / processing aid to the internal mixer and stir at low speed to 70±2 ℃;

[0034] (2) Add the remaining components into different internal mixers according to the composition of dense rubber and foamed rubber, continue stirring and heating to 100±2°C to obtain their respective mixtures;

[0035] (3) the mixture is discharged from the internal mixer to the open mill, and the sheet is cooled to obtain dense rubber and foamed rubber respectively;

[0036] (4) Feed dense rubber and foamed rubber into different extruders respectively, form them through a die, and process them into semi-finished sealing strips through hot air microwave vulcanization;

[0037] (5) Post-processing the semi-finished product, a...

Embodiment 1

[0040] The dense rubber strip is composed of the following components in parts by weight: EPDM rubber 100 parts, reinforcing carbon black SSO-1180 parts, environmental protection oil 125 parts, heavy calcium 90 parts, zinc oxide 7 parts, stearic acid 1.5 parts , 2 parts of surfactant, 0.5 part of bamboo fragrance, 1.5 parts of sulfur powder, 1.5 parts of accelerator ZDBC, 1.5 parts of vulcanizing agent MBTS;

[0041]The foam rubber strip is composed of the following components in parts by weight: 100 parts of EPDM rubber, 80 parts of reinforcing carbon black HS-45, 70 parts of environmental protection oil, 50 parts of active calcium, 7 parts of zinc oxide, stearic acid 1 part, 2 parts of processing aids, 0.6 parts of bamboo fragrance, 1.5 parts of sulfur powder, 1.5 parts of accelerator ZDBC, 1.5 parts of vulcanizing agent MBT, 0.5 parts of DTDM, 0.6 parts of DPTT, 3.5 parts of foaming agent OBSH.

[0042] The sealing strip made of the dense rubber strip and the foamed rubber ...

Embodiment 2

[0044] The dense rubber strip is composed of the following components in parts by weight: 100 parts of EPDM rubber, 1180 parts of reinforcing carbon black SSO-120 parts of environmental protection oil, 80 parts of heavy calcium, 6 parts of zinc oxide, and 1 part of stearic acid , 2 parts of surfactant, 0.5 part of bamboo fragrance, 1 part of sulfur powder, 1.5 parts of accelerator ZDBC, 1.1 part of vulcanizing agent MBTS;

[0045] The foam rubber strip is composed of the following components in parts by weight: 100 parts of EPDM rubber, 70 parts of reinforcing carbon black HS-45, 70 parts of environmental protection oil, 40 parts of active calcium, 7 parts of zinc oxide, stearic acid 1 part, 1 part of processing aid, 0.4 part of bamboo fragrance, 1 part of sulfur powder, 1 part of accelerator ZDBC, 1.1 part of vulcanizing agent MBT, 0.5 part of DTDM, 0.6 part of DPTT, 3 parts of foaming agent OBSH.

[0046] The sealing strip made of the dense rubber strip and foam rubber strip...

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Abstract

The invention relates to an odorless automobile sealing strip is formed by compounding a dense rubber strip and a foamed rubber strip, and the dense rubber strip mainly comprises ethylene propylene diene monomer, reinforcing carbon black, environment-friendly oil, ground calcium carbonate, zinc oxide, stearic acid, a surfactant, bamboo fragrance, sulfur powder, an accelerant and a vulcanizing agent. The foamed rubber strip mainly comprises ethylene propylene diene monomer, reinforced carbon black environment-friendly oil, active calcium, zinc oxide, stearic acid, a processing aid, bamboo fragrance, sulfur powder, an accelerant, a vulcanizing agent, DTDM, DPTT and a foaming agent. According to the invention, ethylene propylene diene monomer (EPDM) is used as a main material, and a pluralityof added auxiliary materials and fragrance are interacted, so that the prepared automobile sealing strip is fragrant and free of pungent smell.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to an odorless automobile sealing strip and a preparation method thereof. Background technique [0002] Automobile sealing strip is one of the important parts of automobiles. It is widely used in doors, windows, body, sunroof, engine box and backup (luggage) box and other parts. It has the functions of sound insulation, dustproof, water seepage prevention and shock absorption. Maintain and maintain the small environment in the car, thus playing an important role in protecting the members, electromechanical devices and accessories in the car. With the development of the automobile industry, the importance of the beauty, environmental protection and comfort of the sealing strip is becoming increasingly prominent. [0003] At present, most of the automotive sealing strip materials are made of EPDM as the main raw material through vulcanization and cross-linking process, but H will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/00C08K13/02C08K3/04C08K3/26C08K3/22C08K5/09C08K3/06C08K5/47C08J9/10
CPCC08L23/16C08J9/105C08J9/0061C08J9/0066C08J9/0023C08J9/0033C08J9/0095C08J2323/16C08J2491/00C08K2003/265C08K2003/2296C08J2203/04C08L91/00C08K13/02C08K3/04C08K3/26C08K3/22C08K5/09C08K3/06C08K5/47
Inventor 俞金伟鲍卫平
Owner ZHEJIANG XIANTONG RUBBER & PLASTIC CO LTD
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