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Composition for preparing EPDM (Ethylene-Propylene-Diene Monomer)/polylactic acid thermoplastic vulcanized rubber, vulcanized rubber as well as preparation method and application of vulcanized rubber

A technology of EPDM rubber and thermoplastic vulcanizate, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as poor impact resistance and poor processing performance

Pending Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to improve existing TPV mainly adopting petroleum-based plastics as raw material, poor processability and other problems, and improving the problems such as poor impact resistance of TPV using polylactic acid. The present invention provides EPDM / polylactic acid thermoplastic Composition of vulcanizate, EPDM rubber / polylactic acid thermoplastic vulcanizate, preparation method and application thereof

Method used

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  • Composition for preparing EPDM (Ethylene-Propylene-Diene Monomer)/polylactic acid thermoplastic vulcanized rubber, vulcanized rubber as well as preparation method and application of vulcanized rubber
  • Composition for preparing EPDM (Ethylene-Propylene-Diene Monomer)/polylactic acid thermoplastic vulcanized rubber, vulcanized rubber as well as preparation method and application of vulcanized rubber
  • Composition for preparing EPDM (Ethylene-Propylene-Diene Monomer)/polylactic acid thermoplastic vulcanized rubber, vulcanized rubber as well as preparation method and application of vulcanized rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0047] Using the formula composition shown in Table 1, process according to the following processing methods to obtain thermoplastic vulcanizates P1-P8.

[0048] (1) At a temperature of 200°C, polylactic acid, anti-aging agent (2,2,4-trimethyl-1,2-dihydrogenoline), antioxidant (tetrakis[β-(3,5 -di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester) into the internal mixer, after the polylactic acid is melted, add EPDM rubber and compatibilizer (diphenylmethane diisocyanate), melt together After mixing, the mixed material is obtained, and the mixed material is extruded and granulated through a single-screw extruder to obtain mixed material granules.

[0049] (2) A co-rotating twin-screw extruder is adopted, the screw speed is 100rpm, the main feeding speed is 40rpm, the head temperature is 180°C, the temperature of the screw feeding section is 150°C, and the temperature of the melting and mixing section is 180°C, Add the mixing material granules and vulcanizing ag...

Embodiment 9

[0051] Using the formula described in Table 1, the difference is that the dynamic vulcanization process is carried out under the following processing conditions: a co-rotating intermeshing twin-screw extruder is used, the screw speed is 150 rpm, the main feeding speed is 40 rpm, and the head temperature is 190 ° C. The temperature of the feeding section of the screw is 170°C, and the temperature of the melting and mixing section is 190°C. The mixing material particles and vulcanizing agent are added, extruded by dynamic vulcanization, and granulated to obtain TPV particles P9.

Embodiment 10

[0053] TPV particles were prepared with reference to the method described in Example 1, except that the vulcanizing agent used was dibenzoyl peroxide, 5 parts by weight, to obtain thermoplastic vulcanizate TPV particles P10.

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Abstract

The invention relates to the field of ethylene propylene diene monomer / polylactic acid thermoplastic vulcanized rubber, in particular to a composition for preparing the ethylene propylene diene monomer / polylactic acid thermoplastic vulcanized rubber, the ethylene propylene diene monomer / polylactic acid thermoplastic vulcanized rubber and a preparation method and application of the ethylene propylene diene monomer / polylactic acid thermoplastic vulcanized rubber. The composition comprises the following components in parts by weight: 100 parts of ethylene propylene diene monomer, 30-100 parts of polylactic acid, 0.5-10 parts of a vulcanizing agent, 1-15 parts of a compatibilizer, 0.5-5 parts of an anti-aging agent and 0.1-10 parts of an antioxidant. The thermoplastic vulcanized rubber provided by the invention has excellent mechanical properties and good impact resistance, also has the properties of high elasticity, easiness in processing, repeated processing and the like, and can be used for oil delivery pipelines and sealing parts of automobiles.

Description

technical field [0001] The invention relates to the field of EPDM rubber / polylactic acid thermoplastic vulcanizate, in particular to a composition for preparing EPDM rubber / polylactic acid thermoplastic vulcanizate, and using the composition to prepare EPDM rubber / polylactic acid thermoplastic vulcanizate by dynamic vulcanization technology. A method for lactic acid thermoplastic vulcanizate, the EPDM / polylactic acid thermoplastic vulcanizate prepared by the method, and the application of the thermoplastic vulcanizate in automobile oil pipelines and sealing parts. Background technique [0002] Polylactic acid is a polymer material produced by starch-rich corn, wheat, cassava and other crops, fermented by starch to produce lactic acid, and then polymerized. It belongs to thermoplastic linear aliphatic polyester. Compared with traditional plastics, polylactic acid has the following advantages: rich sources of raw materials, good biocompatibility and biodegradability, good tran...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L67/04C08K5/134C08K5/29C08K5/14C08K5/00C09K3/10
CPCC08L23/16C08L67/04C09K3/10C08K5/1345C08K5/29C08K5/14C08K5/00
Inventor 李洪真王超吕鹏飞吴卫东徐林
Owner CHINA PETROLEUM & CHEM CORP