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Method for preparing tough-increased polypropylene

A polypropylene material and polypropylene technology, applied in the field of preparation of toughened polypropylene materials, can solve the problems of complex mixing and difficult precise control of the process, and achieve the effect of increasing heat resistance temperature and improving toughness

Inactive Publication Date: 2005-07-20
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

These methods are all through curing or dynamic crosslinking methods, the mixing is more complicated, and the process is not easy to accurately control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment 1: get 100 parts of polypropylene, 10 parts of EPDM rubber, 1 part of triallyl isocyanate, 0.2 part of antioxidant (1010), and mix for 10 minutes at 180° C. on an open mill, This material is then passed through the Co 60 Gamma ray irradiation, the irradiation dose is 5kGy.

Embodiment 2

[0009] Embodiment 2: get 100 parts of polypropylene, 30 parts of EPDM rubber, 3 parts of triallyl isocyanate, 0.8 part of antioxidant (1010), and knead for 10 minutes at 190 ° C on an open mill, This material is then passed through the Co 60 Gamma ray irradiation, the irradiation dose is 10kGy.

Embodiment 3

[0010] Embodiment 3: Get 100 parts of polypropylene, 50 parts of EPDM rubber, 5 parts of trimethylolpropane triacrylate, 1 part of antioxidant (1010), and mix for 10 minutes at 210 ° C in an internal mixer , and then pass this material through Co 60 Gamma ray irradiation, the irradiation dose is 20kGy.

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PUM

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Abstract

Isotactic polypropylene in 100 weight portions and EPT in 10-50 weight portions as main material, triallyl isocyanurate or trihydroxymethyl propane triacrylate as multifunctional monomer assistant in 1-5 weight portions, and tetrapentaerythritol ester (1010) as antioxidant in 0.2-1 weight portions are mixed at 180-210 deg.c; and the mixture is Co-60 gamma ray irradiated in irradiation dose of 5-20 kGy to prepare toughened polypropylene material. The prepared material has impact strength as high as 20-40 kj / sq m, 10-20 times higher that of pure polypropylene material, and Vicat softening point raised by over 10 deg.c.

Description

technical field [0001] The invention belongs to a preparation method of a toughened polypropylene material. Background technique [0002] Polypropylene (PP) is a widely used thermoplastic. It has many excellent properties, but its poor impact performance, especially at room temperature and low temperature, limits its application. Many researchers regard toughened polypropylene as a research focus. [0003] Chinese patent "03129378" discloses the title "A Preparation Method for Reinforced and Toughened Polypropylene Material". Polypropylene resin, maleic anhydride grafted elastomer, epoxy resin, curing agent, etc. are added to the screw extruder for mixing, which improves the toughness of polypropylene. Chinese patent "85102222" discloses an invention entitled "Ethylene Propylene Rubber / Polypropylene Thermoplastic Elastomer and Preparation Method". Dynamic cross-linking agent, molded by thermoplastic processing method. These methods are all through curing or dynamic cross...

Claims

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Application Information

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IPC IPC(8): C08J3/28C08K5/29C08L23/12
Inventor 宋春雷于黎莫志深那天海于力张利华
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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