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Dynamic vulcanization HPVC/EPDM thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer, dynamic vulcanization technology, applied in the field of thermoplastic elastomer and its preparation, can solve problems such as poor compatibility

Inactive Publication Date: 2011-05-11
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But PVC and EPDM have great differences in structure, so the compatibility between them is very poor

Method used

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  • Dynamic vulcanization HPVC/EPDM thermoplastic elastomer and preparation method thereof
  • Dynamic vulcanization HPVC/EPDM thermoplastic elastomer and preparation method thereof
  • Dynamic vulcanization HPVC/EPDM thermoplastic elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add EPDM to a four-neck flask equipped with stirring, add solvent, control the temperature with a water bath, protect with N2, slowly add the MMA solution dissolved in BPO dropwise, react until the predetermined time, pour the reaction solution into methanol to precipitate, and remove unreacted The monomer and solvent were filtered by suction to obtain a crude product, which was extracted with isopropanol for 48 hours in a Soxhlet extractor to remove the PMMA homopolymer, and vacuum-dried to constant weight to obtain EPDM-g-MMA.

[0039] The experimental temperature is 80°C, the reaction time is 7h, the initiator is BPO, the amount of initiator is 0.10-0.15 parts, and the amount of monomer MMA is 12 parts, the grafting rate reaches 9.91%, and the grafting efficiency is 21.65%.

Embodiment 2

[0041] Experimental basic formula:

[0042]

[0043] The influence of CPE and EPDM-g-MMA two compatibilizers used together on system performance:

[0044]

[0045] By using EPDM-g-MMA in combination with CPE, the mechanical properties of the system are significantly improved compared with only adding EPDM-g-MMA or CPE alone, the tensile strength reaches 15.87Mpa, and the elongation at break reaches 359.12%.

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Abstract

The invention relates to a dynamic vulcanization HPVC / EPDM thermoplastic elastomer and a preparation method thereof. The dynamic vulcanization HPVC / EPDM thermoplastic elastomer mainly comprises the following components by weight part: 30-70 parts of high degree of polymerization of polyvinyl chloride (HPVC), 30-70 parts of EPDM, 9-15 parts of CPE, 25-55 parts of dioctyl-phthalate (DOP) and 3.0 parts of dibutyltin dilaurate; and the EPDM serves as the raw material, the methyl methacrylate serves as the grafting monomer, and the dynamic vulcanization HPVC / EPDM thermoplastic elastomer is synthesized in a solvent under the conditions of different temperature, different time, different monomer ratio and different consumption of an initiating agent. The EPDM-g-MMA can effectively increase capacity of the blending system for HPVC and EPDM, and the mechanical property of the HPVC / EPDM-TPE can be enhanced.

Description

technical field [0001] The invention relates to a thermoplastic elastomer and a preparation method thereof, in particular to a HPVC / EPDM thermoplastic elastomer with excellent performance and a preparation method thereof. The compatibilizer EPDM-g-MMA of the elastomer can effectively increase the compatibilization and improve the performance of HPVC / Mechanical properties of EPDM-TPE. Background technique [0002] Thermoplastic elastomer is a new type of polymer material that can flow at high temperature, exhibit high elasticity of rubber at room temperature, and has both plastic and rubber properties. It is also called the third-generation rubber. Currently widely used is the use of rubber and plastic blending method to prepare thermoplastic elastomers. [0003] Ethylene-propylene-diene rubber (EPDM) is a general-purpose synthetic rubber made of ethylene and propylene as the main raw materials, and a small amount of non-conjugated diene is polymerized under the action of ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/16C08L51/06C08K13/02C08K3/06C08K5/47C08K3/22C08F255/06
Inventor 梁兵季洁梅衣惠君
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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