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A self-adhesive single-layer high-magnification expansion rubber strip and its preparation method

A high-magnification, self-adhesive technology, applied in the direction of adhesive types, adhesives, natural rubber adhesives, etc., can solve the problems of poor sound insulation and noise reduction effects of automobiles, inability to seal, and reduce the noise reduction function of products.

Active Publication Date: 2021-08-20
科建高分子材料(上海)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the adhesive layer cannot be foamed, it cannot seal some small gaps. The foamed layer has no bonding ability with the substrate, so the product often cannot completely seal the cavity, which reduces the noise reduction function of the product.
[0003] Moreover, the expansion ratio of the existing expansion strips is only 30%-200%, which often makes the product unable to completely seal the cavity, resulting in relatively poor sound insulation and noise reduction effects for automobiles

Method used

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  • A self-adhesive single-layer high-magnification expansion rubber strip and its preparation method
  • A self-adhesive single-layer high-magnification expansion rubber strip and its preparation method
  • A self-adhesive single-layer high-magnification expansion rubber strip and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0025] A new type of self-adhesive single-layer high-magnification expansion rubber strip for automobiles, the raw materials of the expansion rubber strip are calculated by weight percentage, including the following components: 20% of natural rubber, 6% of terpene phenol resin, and 7% of petroleum resin , modified urea 1%, AC foaming agent 8%, PTSH foaming agent 5%, calcium carbonate 45%, sulfur 0.4%, antioxidant 0.3%, paraffin oil 5%, naphthenic oil 2%, accelerator 0.3 %.

Embodiment 2

[0027] A new type of self-adhesive single-layer high-magnification expansion rubber strip for automobiles, the raw materials of the expansion rubber strip are calculated by weight percentage, including the following components: 16% of natural rubber, 6% of butyl rubber, 6% of terpene phenol resin %, petroleum resin 7%, modified urea 1%, AC foaming agent 8%, PTSH foaming agent 5%, calcium carbonate 43%, sulfur 0.4%, antioxidant 0.3%, paraffin oil 5%, naphthenic oil 2%, Accelerator 0.3%.

Embodiment 3

[0029] A new type of self-adhesive single-layer high-magnification expansion rubber strip for automobiles, the raw materials of the expansion rubber strip are calculated by weight percentage, including the following components: 16% of natural rubber, 6% of butyl rubber, 6% of terpene phenol resin %, petroleum resin 7%, modified urea 1%, AC foaming agent 10%, calcium carbonate 46%, sulfur 0.4%, antioxidant 0.3%, paraffin oil 5%, naphthenic oil 2%, accelerator 0.3% .

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Abstract

The invention discloses a self-adhesive single-layer high-magnification expansion rubber strip, which comprises the following components in parts by weight: 14-20 parts by weight of natural rubber; 4-9 parts by weight of butyl rubber; 0-4 parts by weight of modified urea Parts by weight; 40-50 parts by weight of filler; 9-20 parts by weight of tackifying resin; 9-17 parts by weight of blowing agent; 0.2-0.6 parts by weight of sulfur; 0.1-0.5 parts by weight of antioxidant; 0.2-0.6 parts by weight of accelerator Part; Solvent 4-14 parts by weight. The self-adhesive single-layer high-magnification expansion rubber strip of the present invention uses natural rubber and butyl rubber in combination as raw materials, so that the expansion rubber strip can not only ensure a certain crosslinking density, but also ensure a certain airtightness. AC foaming agent and PTSH foaming agent are used together to better improve and ensure the foaming ratio. The foaming ratio is increased to 500%-600%, and it is a single-layer structure, which improves the sound insulation and noise reduction effect of the product on the car.

Description

technical field [0001] The invention belongs to the technical field of foamed expansion rubber strips for automobiles, and in particular relates to a self-adhesive single-layer high-magnification expansion rubber strip and a preparation method thereof. Background technique [0002] The existing foam-type expansion rubber strip is a double-layer product, which is divided into a foam layer and a bonding layer. The bonding layer mainly plays a bonding role, and the foaming layer plays a sealing role. However, because the adhesive layer cannot be foamed, it cannot seal some small gaps. The foamed layer has no bonding ability with the substrate, so the product often cannot completely seal the cavity, which reduces the noise reduction function of the product. . [0003] Moreover, the expansion ratio of the existing expansion rubber strip is only 30%-200%, which often makes the product unable to completely seal the cavity, resulting in a relatively poor sound insulation and noise ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J107/00C09J123/22C08J9/10
CPCC08J9/103C08J9/105C08J2203/04C08J2307/00C08J2423/22C08L2205/035C09J107/00C08L23/22
Inventor 秦安康邹明选吴海涛
Owner 科建高分子材料(上海)股份有限公司
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