SEBS (styrenic block copolymer) thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer and thermoplastic technology, applied in the field of SEBS thermoplastic elastomer and its preparation, can solve the problems of large compression set and limited SEBS application, and achieve the effects of easy operation, reduced environmental pollution and high efficiency

Active Publication Date: 2012-08-15
奥世达弹性体(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with traditional vulcanized rubber, ordinary SEBS blends have disadvantages such as larger compression set, which limits the application of SEBS.

Method used

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  • SEBS (styrenic block copolymer) thermoplastic elastomer and preparation method thereof
  • SEBS (styrenic block copolymer) thermoplastic elastomer and preparation method thereof
  • SEBS (styrenic block copolymer) thermoplastic elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0029] According to the formulation listed in Table 2, Examples 1-6 were carried out in the same manner as Comparative Example 1. The results are shown in Table 2.

[0030] Table 2

[0031]

[0032] From each example in Comparative Example 2 and Table 2, it is found that by adding hydrocarbon monomer resin, various mechanical properties of SEBS thermoplastic elastomer are improved, especially the compression set is significantly reduced. And within the content range of the hydrocarbon monomer resin used in the present invention, the compression set of the obtained product is good. In addition, it can be seen from Table 2 that the effect of aromatic hydrocarbon monomer resin (such as CS801) is slightly better than that of aliphatic hydrocarbon monomer resin (such as Piccotac1115).

Embodiment 7～10

[0034] According to the formula listed in Table 3, Examples 7-10 were carried out in the same way as Comparative Example 1. The results are shown in Table 3.

[0035] table 3

[0036]

[0037]

[0038] The result of table 3 shows that the reduction of polypropylene content is beneficial to the improvement of the compression set of SEBS thermoplastic elastomer, reduces the mechanical property of thermoplastic elastomer, causes product hardness to reduce; Therefore when preparing the product of the present invention, polypropylene content should not be too low.

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Abstract

The invention provides an SEBS (styrenic block copolymer) thermoplastic elastomer. The SEBS thermoplastic elastomer comprises the following constituents in parts by weight: 30-40 of SEBS resin, 3-19 of polypropylene, 20-48 of mineral oil, 3.5-8 of carbon hydrogen monomer resin, 5-35 of a filler and 0.05-0.2 part of an antioxygen. The invention also provides another SEBS thermoplastic elastomer. The SEBS thermoplastic elastomer comprises the following constituents in parts by weight: 25- less than 30 of the SEBS resin, 3-19 of the polypropylene, 20-48 of the mineral oil, 3.5-8 of the carbon hydrogen monomer resin, 3-6 of the thermoplastic, 5-35 of the filler and 0.05-0.2 part of the antioxygen. According to the invention, the SEBS thermoplastic elastomer provided by provided by the invention has good compression set, simultaneously has excellent mechanical properties, and has wide application range. In addition, the invention also provides a preparation method of the SEBS thermoplastic elastomer, and the preparation method has the advantages of simple technology, small energy consumption and high efficiency, and is easy to operate and repeat.

Description

technical field [0001] The invention relates to a SEBS thermoplastic elastomer with good compression permanent deformation and a preparation method thereof. Background technique [0002] Product seals need to have good compression set to achieve a good sealing effect. At present, the raw materials of seals mainly include natural rubber, neoprene rubber, ethylene propylene rubber, nitrile rubber and silicone rubber. These raw materials need to be mixed with various additives, and the finished products need to be vulcanized before they can be used. The preparation process is complicated, the production efficiency is low, and recycling is difficult, which does not meet the requirements of environmental protection. [0003] Thermoplastic elastomer (TPE) is a kind of polymer material that has rubber elasticity at room temperature and can flow at high temperature. Its polymer chain is composed of plastic segment (hard segment) and rubber segment (elastic soft segment) . The pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/12C08L23/14C08L23/06C08K13/02C08K3/26C08K3/34
Inventor 张大志李善良师小康
Owner 奥世达弹性体(深圳)有限公司
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