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Rubber-plastic mixed composition, dynamically vulcanized thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer, dynamic vulcanization technology, applied in the field of thermoplastic elastomer and its preparation, rubber-plastic blending composition, can solve the problems of poor compression set, poor dispersion of rubber phase, poor high temperature resistance, etc., and achieve excellent electrical properties , good thermal stability, and uniform vulcanization state

Active Publication Date: 2015-05-13
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the problems of poor high temperature resistance, low strength, poor compression set and poor rubber phase dispersion of thermoplastic elastomers in the prior art, the invention provides a rubber-plastic blend composition for dynamically vulcanized thermoplastic elastomers, Dynamically vulcanized thermoplastic elastomer prepared by using the rubber-plastic blend composition and preparation method of the thermoplastic elastomer

Method used

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  • Rubber-plastic mixed composition, dynamically vulcanized thermoplastic elastomer and preparation method thereof
  • Rubber-plastic mixed composition, dynamically vulcanized thermoplastic elastomer and preparation method thereof
  • Rubber-plastic mixed composition, dynamically vulcanized thermoplastic elastomer and preparation method thereof

Examples

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Embodiment 1

[0052] This embodiment provides a kind of EPDM rubber / poly-4-methylpentene-1 dynamically vulcanized thermoplastic elastomer, its components and its preparation method are as follows:

[0053] (1) EPDM rubber of 40 parts by weight, zinc oxide of 3 parts by weight, stearic acid of 3 parts by weight and antioxidant 4010 of 1 part by weight are added in the internal mixer, internal mixer temperature 100 ℃, The rotating speed is 80 rpm, and the time is 15 minutes, and the masterbatch is prepared for use.

[0054] (2) Cut the masterbatch prepared in the first step into pieces for later use. The temperature of the internal mixer is 230°C and the rotating speed is 70r / min. After adding 60 parts by weight of poly-4-methylpentene-1 and melting for 3 minutes, Then add EPDM rubber masterbatch, after blending for 3 minutes, add 1 weight part of tetramethylthiuram disulfide, 1 weight part of 2,2'-dithiodibenzothiazole, 1 weight part Parts of sulfur, discharged after dynamic vulcanization f...

Embodiment 2

[0056] This embodiment provides a kind of EPDM rubber / poly-4-methylpentene-1 / polypropylene dynamically vulcanized thermoplastic elastomer, its components and its preparation method are as follows:

[0057] (1) 45 parts by weight of EPDM rubber, 5 parts by weight of zinc oxide, 2 parts by weight of stearic acid and 1 part by weight of antioxidant 4010 are added to the internal mixer, and the temperature of the internal mixer is 100 ° C, The rotating speed is 80 rpm, and the time is 15 minutes, and the masterbatch is prepared for use.

[0058] (2) The masterbatch prepared in the first step is cut into pieces for subsequent use, the temperature of the internal mixer is 230° C., and the rotating speed is 70 r / min, and 50 parts by weight of poly-4-methylpentene-1 are successively added and melted for 3 minutes, 5 Parts by weight of polypropylene are melted for 2 minutes, then EPDM masterbatch is added, after blending for 3 minutes, 1.5 parts by weight of tetramethylthiuram disulfid...

Embodiment 3

[0060] This embodiment provides a kind of EPDM rubber / poly-4-methylpentene-1 / polypropylene dynamically vulcanized thermoplastic elastomer, its components and its preparation method are as follows:

[0061] (1) 60 parts by weight of EPDM rubber, 7 parts by weight of zinc oxide, 1 part by weight of stearic acid and 1 part by weight of antioxidant 4010 are added to the internal mixer, and the temperature of the internal mixer is 100 ° C, The rotating speed is 80 rpm, and the time is 15 minutes, and the masterbatch is prepared for use.

[0062] (2) The masterbatch prepared in the first step is cut into pieces for subsequent use, the temperature of the internal mixer is 230° C., and the rotating speed is 70 r / min, and 38 parts by weight of poly-4-methylpentene-1 are successively added and melted for 3 minutes, 2 Parts by weight of polypropylene are melted for 2 minutes, then EPDM masterbatch is added, and after blending for 3 minutes, 2 parts by weight of 2,2'-dithiodibenzothiazole...

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Abstract

The invention provides rubber-plastic mixed composition, a dynamically vulcanized thermoplastic elastomer and a preparation method thereof. The dynamically vulcanized thermoplastic elastomer is prepared by dynamically vulcanizing ethylene-propylene-diene monomer rubber, poly-4-methylpentene-1 and a cross-linking system by adopting an internal mixing process. The thermoplastic elastomer is high in strength, excellent in high-temperature resistance, small in permanent deformation and good in elasticity; the high-temperature resistance of the thermoplastic elastomer prepared by adopting the method cannot be matched by that of a thermoplastic elastomer prepared by other methods.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a rubber-plastic blend composition for preparing dynamically vulcanized thermoplastic elastomers, thermoplastic elastomers prepared from the composition and a preparation method. Background technique [0002] Thermoplastic elastomer is a polymer material that has the high elasticity of rubber at room temperature and can be processed as conveniently as plastic at melting temperature. It is environmentally friendly, non-toxic, has a wide range of hardness, excellent processing performance, no need for vulcanization, and can be recycled. Processing, waste products can be reused and a series of advantages. [0003] Thermoplastic elastomer materials solve the shortcomings of traditional rubber that require vulcanization, reinforcement, and repeated processing. Moreover, the energy consumption required to produce this material is low, and the material is environmentally frie...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/20C08L23/12C08K13/02C08K3/22C08K5/09C08K5/47C08K3/06C08K3/04B29C35/02
CPCC08L23/16C08L23/20B29C35/0288C08L2205/03C08L2201/02C08K13/02C08K2003/2296C08K5/09C08K5/47C08K3/06C08K3/04C08L23/12
Inventor 宗成中徐萌萌曹兰宗迎夏王春芙
Owner QINGDAO UNIV OF SCI & TECH
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