Sponge glue, preparation method thereof, and sealing strip comprising sponge glue

A technology of sponge rubber and mixed rubber, applied in the field of sealing materials, can solve the problems of poor tear strength and weather resistance, and the smell of the sealing strip is large, and achieve the effects of reducing odor and toxicity, reducing odor, and reducing the amount of production.

Inactive Publication Date: 2018-02-09
HENNIGES (CHINA) AUTOMOTIVE SEALING SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, what the present invention intends to solve is that the existing sealing strip has the defects of high odor, poor tensile strength, tear strength and weather resistance, and then provides a sponge with low odor, good tensile strength, tear strength and weather resistance Glue and preparation method thereof, sealing strip comprising same

Method used

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  • Sponge glue, preparation method thereof, and sealing strip comprising sponge glue
  • Sponge glue, preparation method thereof, and sealing strip comprising sponge glue
  • Sponge glue, preparation method thereof, and sealing strip comprising sponge glue

Examples

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Embodiment 1

[0041] This embodiment provides a kind of sponge rubber and preparation method thereof, and this sponge rubber is made up of the raw material of following quality: the EPDM rubber of 100kg, the N550 carbon black of 75kg, the light calcium carbonate of 25kg, the zinc oxide of 8kg, 1kg of stearic acid, 2kg of polyethylene glycol, 85kg of paraffin oil, 2kg of sulfur, 8kg of clay, 7kg of non-nitroso vulcanization accelerator and 2kg of blowing agent;

[0042] Among them, the nitroso-free vulcanization accelerator consists of 1.5kg of zinc dibenzyl dithiocarbamate, 1.5kg of 2-thiol benzothiazole and 4kg of dithiophosphate-di-n-butyl dithiocarbamate Zinc phosphate composition;

[0043] The blowing agent is sodium bicarbonate and azodicarbonamide, and the mass ratio of the two is 1:4.5;

[0044] The preparation method of above-mentioned sponge glue, comprises the steps:

[0045] 1) Perform the first mixing of EPDM rubber and zinc oxide at 90°C to obtain the first mixed rubber;

[...

Embodiment 2

[0050] The present embodiment provides a kind of sponge rubber and preparation method thereof, and this sponge rubber is made up of the raw material of following quality: the EPDM rubber of 100kg, the N550 carbon black of 65kg, the light calcium carbonate of 26kg, the zinc oxide of 7kg, 2kg of stearic acid, 1kg of polyethylene glycol, 86kg of paraffin oil, 1kg of sulfur, 9kg of clay, 6kg of non-nitroso vulcanization accelerator and 3kg of blowing agent;

[0051] Among them, the nitroso-free vulcanization accelerator consists of 1kg of zinc dibenzyl dithiocarbamate, 1kg of 2-mercaptobenzothiazole and 4kg of dithiophosphate-di-n-butylzinc dithiophosphate composition;

[0052] The blowing agent is sodium bicarbonate and 4,4-oxybisbenzenesulfonyl hydrazide, and the mass ratio of the two is 1:3;

[0053] The preparation method of above-mentioned sponge glue, comprises the steps:

[0054] 1) Perform the first mixing of EPDM rubber and zinc oxide at 85°C to obtain the first mixed r...

Embodiment 3

[0059] This embodiment provides a kind of sponge rubber and preparation method thereof, and this sponge rubber is made up of the raw material of following quality: the EPDM rubber of 100kg, the carbon black of 75kg, the light calcium carbonate of 25kg, the zinc oxide of 8kg, the zinc oxide of 1kg The stearic acid of 2kg, the polyethylene glycol of 2kg, the paraffin oil of 85kg, the sulfur of 2kg, the potter's clay of 8kg, the non-nitroso vulcanization accelerator of 7kg and 2kg blowing agent;

[0060] Among them, the nitroso-free vulcanization accelerator consists of 1.5kg of zinc dibenzyl dithiocarbamate, 1.5kg of 2-thiol benzothiazole and 4kg of dithiophosphate-di-n-butyl dithiocarbamate Zinc phosphate composition;

[0061] The blowing agent is sodium bicarbonate and azodicarbonamide, and the mass ratio of the two is 1:4.5;

[0062] Carbon black is composed of N550 carbon black and N774 carbon black with a mass ratio of 4:11;

[0063] The preparation method of above-mentio...

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Abstract

The invention discloses sponge glue, a preparation method thereof, and a sealing strip comprising the sponge glue. The sponge glue adopts raw materials in a specific ratio, and the raw materials interact with each other and act synergistically. The odor and toxicity of the sponge glue are reduced, and the tensile strength, tear strength and weather resistance of the sponge glue are improved. A nitroso-free vulcanization accelerator is used to reduce cancerogens and odor in a high temperature heating process. More importantly, china clay, light calcium carbonate and a foaming agent are added, montmorillonite and other mineral materials and sand, silt and clay in the china clay can absorb odors and harmful substances that may be generated; by use of the foaming agent, bubbles are formed in the sponge glue, so that the sponge glue has appropriate porosity, and adsorption effects of the sponge glue on the toxic and harmful substances can be improved; at the same time epdm rubber and lightcalcium carbonate both are bonded by the china clay, and vulcanized and cured in the subsequent extrusion molding process, and the tensile strength, tear strength and weather resistance of the spongeglue are improved.

Description

technical field [0001] The invention belongs to the technical field of sealing materials, and in particular relates to a sponge rubber, a preparation method thereof, and a sealing strip containing the same. Background technique [0002] The sealing strip for automobiles is to fill the gap between the components by the compression deformation of the sealing strip. The sealing strip is installed on the sheet metal seam. The interior of the car is isolated from the outside world, which can not only prevent wind, rain and dust from intruding into the car, but also improve sound insulation and heat insulation performance, maintain the environment inside the car, and at the same time ease the impact force when the door is closed and the vibration of the car body during driving. In the process of preparing automobile sealing strips, the rubber material used has sponge rubber. Therefore, in order to improve the performance of the sealing strip, the performance of the sponge rubber s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08L71/02C08K13/02C08K3/04C08K5/09C08K3/26C08K3/22C08K3/34C08K5/39C08K5/47C08K5/5398C08J9/10C08J9/08C08J3/28B29C47/92B29B7/00B29C71/04B29C48/92
CPCC08L23/16B29B7/002B29C48/92B29C71/04B29C2948/92514B29C2948/9258B29C2948/92704C08J3/28C08J9/08C08J9/103C08J9/105C08J2203/02C08J2203/04C08J2323/16C08J2491/06C08K2003/2296C08K2003/265C08K2201/003C08L2201/08C08L2203/14C08L2205/03C08L91/06C08L71/02C08K13/02C08K3/04C08K5/09C08K3/26C08K3/22C08K3/34C08K5/39C08K5/47C08K5/5398
Inventor 郝会强余作兴
Owner HENNIGES (CHINA) AUTOMOTIVE SEALING SYST CO LTD
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