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Thermoplastic elastomer corner connecting material for bonding ethylene propylene diene monomer and preparation method of thermoplastic elastomer corner connecting material

A technology of EPDM rubber and thermoplastic elastomer, which is applied in the field of thermoplastic elastomer corner material, can solve the problems of easy shrinkage pits due to material shrinkage, poor bonding of thin and narrow edges, and high bonding strength, and achieve shrinkage. Low, convenient injection molding processing, high bonding strength effect

Pending Publication Date: 2021-12-21
张家港市美特高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first technical problem to be solved by the present invention is to provide a thermoplastic elastomer corner material for bonding EPDM rubber, which is a thermoplastic elastomer with high bonding strength and low shrinkage rate, and solves the problem of It solves the problems of shrinkage pits and poor bonding of thin and narrow edges in the past when the material shrinks in the corner area
[0006] The second technical problem to be solved by the present invention is to provide a method for preparing a thermoplastic elastomer corner material for bonding EPDM rubber. Shrinkage is prone to shrinkage pits and weak bonding of thin and narrow edges

Method used

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  • Thermoplastic elastomer corner connecting material for bonding ethylene propylene diene monomer and preparation method of thermoplastic elastomer corner connecting material
  • Thermoplastic elastomer corner connecting material for bonding ethylene propylene diene monomer and preparation method of thermoplastic elastomer corner connecting material
  • Thermoplastic elastomer corner connecting material for bonding ethylene propylene diene monomer and preparation method of thermoplastic elastomer corner connecting material

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preparation example Construction

[0048] The above-mentioned preparation method for bonding the thermoplastic elastomer corner material of EPDM rubber may further comprise the steps:

[0049] 1) Mix 5-10 parts by weight of low-molecular-weight SEBS and 15-35 parts by weight of medium-molecular-weight SEBS in a low-mixer to fully mix the aggregated blocks for 5-20 minutes, add 15-35 parts by weight of naphthenic oil for oil extension, Static oil filling time is 1-10h;

[0050] 2) Weigh 5-10 parts by weight of polypropylene and 10-20 parts by weight of maleic anhydride grafted polypropylene and add them into the SEBS filled with oil in step 1), mix them in a low mixer for 5-10 minutes, and mix evenly;

[0051] 3) Weigh 0.1-2 parts by weight of additives, 0.1-0.5 parts by weight of antioxidant and 1-5 parts by weight of black masterbatch, add them to the mixture obtained in step 2), and mix in a low mixer for 1-5 minutes, mix well;

[0052] 4) Weigh 10-25 parts by weight of the filler and add it to the mixture ...

Embodiment 1

[0056] A thermoplastic elastomer corner material for bonding EPDM rubber, comprising the following components in parts by weight:

[0057]

[0058]

[0059] The above-mentioned preparation method of the thermoplastic elastomer corner material for bonding EPDM rubber may further comprise the steps:

[0060] 1) After fully mixing low molecular weight SEBS and medium molecular weight SEBS in a low mixer for 10 minutes, add naphthenic oil for oil extension, and the static oil extension time is 10 hours;

[0061] 2) Weighing polypropylene and maleic anhydride grafted polypropylene and adding them to the SEBS filled with oil in step 1), mixing in a low mixer for 5 minutes, and mixing evenly;

[0062] 3) Weigh the auxiliary agent, antioxidant and black masterbatch and add it to the mixture in step 2), mix it in a low mixer for 3 minutes, and mix thoroughly;

[0063] 4) Weigh the filler and add it to the mixture in step 3), mix it in a low mixer for 10 minutes, and mix thorough...

Embodiment 2

[0066] A thermoplastic elastomer corner material for bonding EPDM rubber, comprising the following components in parts by weight:

[0067]

[0068]

[0069] The preparation method of the scrap material of the present embodiment 2 is the same as that of the embodiment 1.

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Abstract

The invention discloses a thermoplastic elastomer corner connecting material for bonding ethylene propylene diene monomer and a preparation method thereof, and the thermoplastic elastomer corner connecting material comprises the following components by weight: 5-10 parts by weight of polypropylene; 10-20 parts by weight of maleic anhydride grafted polypropylene; 5-10 parts by weight of low molecular weight SEBS; 15-35 parts by weight of medium molecular weight SEBS; 15-35 parts by weight of naphthenic oil; 0.1-2 parts by weight of an auxiliary agent; 0.1 to 0.5 part by weight of an antioxidant; 10-25 parts by weight of a filler; and 1-5 parts by weight of black masterbatch. The thermoplastic elastomer corner connecting material for bonding the ethylene propylene diene monomer is high in bonding strength and low in shrinkage rate.

Description

technical field [0001] The invention relates to a thermoplastic elastomer corner material, in particular to a thermoplastic elastomer corner material for bonding EPDM rubber and a preparation method thereof. Background technique [0002] EPDM rubber is an elastomeric material polymerized from ethylene and propylene monomers by adding a small amount of non-conjugated diene. It is characterized in that there are no unsaturated double bonds in the polymer molecular chain, and unsaturated double bonds are introduced into the branch chain. , because of its excellent weather resistance, heat resistance, ozone resistance, acid and alkali resistance, chemical corrosion resistance, excellent processing performance and low compression set, it is the preferred material for the production of automotive sealing strips. [0003] There are a large number of manufacturers in the automotive sealing strip industry, and the requirements for the sealing strip industry are getting higher and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/12C08L51/06C08L91/00C08K3/22C08K3/34
CPCC08L53/025C08L91/00C08K2003/2224C08L23/12C08L51/06C08K3/22C08K3/34
Inventor 钟明杨新星
Owner 张家港市美特高分子材料有限公司
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