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Polyolefin thermoplastic elastomer and processing method thereof

A thermoplastic elastomer and polyolefin technology is applied in the field of elastomers to achieve the effects of easy processing, low production cost and simple production process

Active Publication Date: 2018-07-20
HANGZHOU XINGLU TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production technology of polyolefin elastomers is not transferred at all, and the export of certain high-performance elastomers to China is deliberately restricted, product standards are raised, and technical barriers are set up, which has caused my country's TPE processing enterprises to introduce advanced processing and molding equipment , but can only launch vicious competition with domestic counterparts in the field of low-end products

Method used

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  • Polyolefin thermoplastic elastomer and processing method thereof

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Comparison scheme
Effect test

Embodiment 1

[0022] A polyolefin thermoplastic elastomer, according to 100 parts by weight, its raw materials include: 10 parts of high-density polyethylene, 90 parts of highly branched polyethylene, 0.1 part of antioxidant 1010, wherein the density of high-density polyethylene is 0.976 g / cm 3 , The degree of crystallinity is 90%, and the softening point is 135°C; among them, the number of highly branched polyethylene used is PER-4.

[0023] A processing method of a polyolefin thermoplastic elastomer, specifically comprising the following steps:

[0024] (1) Mix high-density polyethylene, highly branched polyethylene, and antioxidant 1010 in a mixer,

[0025] (2) Polyolefin thermoplastic elastomer was prepared by melt blending at 190°C.

Embodiment 2

[0027] According to 100 parts by weight of the polyolefin thermoplastic elastomer, its raw materials include: 50 parts of high-density polyethylene, 50 parts of highly branched polyethylene, and 1 part of antioxidant 168.

[0028] Among them, the density of high-density polyethylene is 0.940 g / cm 3 , The degree of crystallinity is 80%, and the softening point is 125°C; among them, the number of highly branched polyethylene used is PER-3.

[0029] The processing method of the polyolefin thermoplastic elastomer specifically comprises the following steps:

[0030] (1) Mix high-density polyethylene, highly branched polyethylene, and antioxidant 168 in a mixer;

[0031] (2) Polyolefin thermoplastic elastomer was prepared by melt blending at 230°C.

Embodiment 3

[0033] Polyolefin thermoplastic elastomer, based on 100 parts by weight, its raw materials include: 40 parts of high-density polyethylene, 60 parts of highly branched polyethylene, 0.5 part of antioxidant 1076, and the density of high-density polyethylene is 0.958 g / cm 3 , The degree of crystallinity is 85%, and the softening point is 131°C; among them, the highly branched polyethylene used is 20 parts of PER-1 and 40 parts of PER-6.

[0034] The processing method of polyolefin thermoplastic elastomer specifically comprises the following steps:

[0035] (1) Mix high-density polyethylene, highly branched polyethylene, and antioxidant 1076 in a mixer;

[0036] (2) Polyolefin thermoplastic elastomer was prepared by melt blending at 210°C.

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Abstract

The invention relates to a polyolefin thermoplastic elastomer and a processing method thereof. 100 parts by weight of the polyolefin thermoplastic elastomer comprise, by weight, 10-50 parts of high density polyethylene, 50-90 parts of highly branched polyethylene and 0.1-1 part of an antioxidant, wherein the branching degree of the highly branched polyethylene is 70-130 branched chains / 1000 carbons, the weight-average molecular weight is 66,000-436,000, and the Mooney viscosity ML (1+4) at 125 DEG C is 6-93. EPDM, POE and OBC and other elastomers are replaced with the highly branched polyethylene, so the production cost of the polyolefin thermoplastic elastomer is greatly reduced, and the method is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of elastomers, and in particular relates to a polyolefin thermoplastic elastomer and a processing method thereof. Background technique [0002] Thermoplastic elastomer (TPE) is a kind of polymer material whose physical properties are between rubber and plastic. It not only has the elasticity of rubber, but also has the ease of processing of plastics, and is recyclable, so it is known as the "third-generation rubber". Since it does not require heat vulcanization like rubber, the molding process is simple. Its final product can be easily produced with ordinary plastic processing machinery, the process can be shortened by 1 / 4, the efficiency can be increased by 10 to 20 times, and energy consumption can be saved by 25 to 40%; and TPE can be reprocessed after recycling. There is no significant loss of product performance. Compared with traditional rubber, this advantage is very obvious, and it can be called a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06
CPCC08L23/06C08L2205/025C08L2207/04C08L2207/062C08L23/04C08L23/08C08L23/14C08L23/16
Inventor 不公告发明人
Owner HANGZHOU XINGLU TECH CO LTD
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