High-toughness polypropylene/elastomer composite material and preparation method thereof
A technology of composite materials and elastomers, which is applied in the field of high-toughness polypropylene/elastomer composite materials and its preparation, can solve the problems of normal temperature toughness of polypropylene, poor processing performance of polypropylene, and insignificant low-temperature toughening effect, etc. Achieving the effects of low price, excellent low temperature toughness and low production cost
Inactive Publication Date: 2019-10-18
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
For example: a reinforced, toughened polypropylene composite material and its preparation method (Chinese invention patent, publication number CN1390882A), the higher content of barium sulfate in this method will make the processing performance of polypropylene worse; another example: nanoparticles Polypropylene composite material reinforced and toughened with elastomer and its preparation method (Chinese invention patent, publication number CN103146060A), this method needs to modify the surface of nanoparticles, graft maleic anhydride on polypropylene, the raw materials are too limited and the method also more complicated
The second is the blending of elastomer, β-nucleating agent (calcium pimelate, dicyclohexyl terephthalamide, aryl dicarboxamide, etc.) with polypropylene, for example: a low-temperature tough isotactic polypropylene product Preparation method (Chinese invention patent, publication number CN103265758A), this invention only improves the low-temperature toughness of polypropylene, and the low-temperature toughness is only increased by more than two times, and the effect of low-temperature toughening is not significant; it does not involve the normal-temperature toughness of polypropylene
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[0024] Now in conjunction with embodiment the present invention will be further described:
[0025] Table 1 provides the formula tables of 1-15 examples of the present invention, and the formula tables of comparative examples 1-8 of the prior art.
[0026] Table 1 embodiment 1~15 and comparative example 1~8 formula table:
[0027]
[0028]
[0029]The polypropylene is any isotactic polypropylene commercially available.
[0030] The β-nucleating agent is not particularly limited, and may be any commercially available β-nucleating agent.
[0031] The carbon nanotubes can be any commercially available carbon nanotubes.
[0032] The elastomer is EPDM, ethylene-1-octene copolymer elastomer (POE), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene - any one of butadiene-styrene block copolymer (SEBS), ethylene-octene block copolymer (OBC).
[0033] The preparation process is:
[0034] Step 1: Premix carbon nanotubes, β-nucleating agent, elastomer and polypr...
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Abstract
The invention relates to a high-toughness polypropylene / elastomer composite material and a preparation method thereof. The composite material is composed of polypropylene, an elastomer, a beta nucleating agent and carbon nanotubes. The preparation method comprises the following steps: premixing the carbon nano tubes, the beta nucleating agent, the elastomer and the polypropylene, then performing melt blending granulation on the pre-mixture through an extruder, and preparing the high-toughness polypropylene / elastomer composite material product by an injection molding machine. According to the polypropylene composite material, the carbon nano tubes, the beta nucleating agent and the elastomer toughened polypropylene are added at the same time, and the polypropylene composite material shows excellent toughness due to the synergistic toughening effect of the carbon nano tubes, the beta nucleating agent and the elastomer toughened polypropylene. The method is simple in operation process, and the polypropylene composite material is prepared by using the industrial conventional double-screw extruder and the injection molding machine, so that production cost is low, and the method is suitable for large-scale industrial production.
Description
technical field [0001] The invention belongs to the field of polymer material modification and processing, and relates to a high-toughness polypropylene / elastomer composite material and a preparation method. Background technique [0002] As one of the five general-purpose plastics, polypropylene is widely used in industries such as automobiles, household appliances, electronics, building materials, household appliances, and chemical equipment due to its good chemical stability and mechanical properties, easy processing, and low cost. However, polypropylene has poor toughness and low notched impact strength, especially at low temperature or high strain rate, which greatly limits the deepening and expansion of polypropylene applications. [0003] At present, physical blending toughening modification is one of the effective methods to improve the toughness of polypropylene. There are three main types of tougheners introduced into polypropylene through physical blending modific...
Claims
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IPC IPC(8): C08L23/12C08L23/16C08L23/08C08L53/02C08K5/00C08K3/04B29B9/06B29B9/12
CPCB29B9/06B29B9/12C08K2201/011C08L23/12C08L2205/242C08L23/16C08K5/0083C08K3/041C08L23/0815C08L53/02C08L53/025
Inventor 陈妍慧樊倩杨松张秋禹刘振国张亮亮
Owner NORTHWESTERN POLYTECHNICAL UNIV
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