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-plast

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

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0051] Example 1

[0052] This embodiment provides an EPDM / poly-4-methylpentene-1 dynamically vulcanized thermoplastic elastomer, the components and the preparation method thereof are as follows:

[0053] (1) Add 40 parts by weight of EPDM rubber, 3 parts by weight of zinc oxide, 3 parts by weight of stearic acid and 1 part by weight of antioxidant 4010 into the internal mixer at a temperature of 100°C, The rotation speed is 80 rpm and the time is 15 minutes, and it is made into a masterbatch for later use.

[0054] (2) Cut the masterbatch prepared in the first step for use. The temperature of the internal mixer is 230°C and the speed is 70r / min. 60 parts by weight of poly-4-methylpentene-1 are added and melted for 3 minutes. Then add EPDM masterbatch, blend for 3 minutes, add 1 part by weight of tetramethylthiuram disulfide, 1 part by weight of 2,2'-dithiodibenzothiazole, 1 part by weight Part of sulfur, dynamically vulcanized for 3 minutes, and discharged to prepare EPDM / polybute...

Example Embodiment

[0055] Example 2

[0056] This embodiment provides an EPDM / poly-4-methylpentene-1 / polypropylene dynamically vulcanized thermoplastic elastomer, and its components and preparation methods are as follows:

[0057] (1) Add 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 into the internal mixer at a temperature of 100°C, The rotation speed is 80 rpm and the time is 15 minutes, and it is made into a masterbatch for later use.

[0058] (2) Cut the masterbatch prepared in the first step for use. The temperature of the internal mixer is 230°C, the speed is 70r / min, and 50 parts by weight of poly-4-methylpentene-1 are sequentially added to melt for 3 minutes. Part by weight of polypropylene was melted for 2 minutes, then added EPDM rubber masterbatch, after blending for 3 minutes, 1.5 parts by weight of tetramethylthiuram disulfide and 1.5 parts by weight of 2,2'-disulfide were added Substitute di...

Example Embodiment

[0059] Example 3

[0060] This embodiment provides an EPDM / poly-4-methylpentene-1 / polypropylene dynamically vulcanized thermoplastic elastomer, and its components and preparation methods are as follows:

[0061] (1) Add 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 into the internal mixer at a temperature of 100°C, The rotation speed is 80 rpm and the time is 15 minutes, and it is made into a masterbatch for later use.

[0062] (2) Cut the masterbatch prepared in the first step for use. The temperature of the internal mixer is 230℃, the speed is 70r / min, and 38 parts by weight of poly-4-methylpentene-1 are sequentially added to melt for 3 minutes. Part by weight of polypropylene melted for 2 minutes, then added EPDM rubber masterbatch, after blending for 3 minutes, 2 parts by weight of 2,2'-dithiodibenzothiazole, 0.5 parts by weight of sulfur, dynamic vulcanization Discharge after 3 minu...

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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
CPCB29C35/0288C08L23/16C08L23/20C08L2201/02C08L2205/03C08K13/02C08K2003/2296C08K5/09C08K5/47C08K3/06C08K3/04C08L23/12
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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