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PA/PP (polyamide/polypropylene) composite material and preparation method thereof

A composite material and polyamide technology, which is applied in the field of polyamide and polypropylene composite materials and their preparation, can solve the problems of general impact strength improvement effect and high impact performance, and achieves simple and reliable process operation technology, improved impact strength, good impact strength. The effect of the application foreground

Active Publication Date: 2013-06-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The third type is styrene-maleic anhydride random copolymer (R-SMA). Using this type of compatibilizer can improve the compatibility of PA and PP, thereby improving the mechanical properties of the material, but the impact on the material General improvement in strength
Chinese patent CN1290594A discloses a PA6 / PP alloy material prepared by grafting ethylene-octene copolymer elastomer with maleic anhydride as the third component, and the impact performance is not very high

Method used

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  • PA/PP (polyamide/polypropylene) composite material and preparation method thereof

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Experimental program
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Embodiment 1～6

[0027] Polycaprolactam (PA6-1013B, Japan UBE company, dried at 100°C for 6 hours), polypropylene (PP-AW564, Singapore tpc company, dried at 90°C for 2 hours), polarized SDSP (Baling Petrochemical Co., Ltd. , its number-average molecular weight is 84,300, the polar block weight content is 3.0%, the S / D weight ratio is 40 / 60, the molecular weight distribution index is 1.2, the polar monomer is vinylpyridine), antioxidant (Irganox 1098 and Irgafos 168, Swiss CIBA company), lubricant (EBS, Shanghai), put into a low-speed mixer and stir evenly, so that all components are fully mixed evenly. Then the above mixed material was extruded and granulated in a BUSS kneading unit (MKD-30, Swiss BUSS company) at a temperature of 220° C. to 240° C. The extruded pellets were dried in a constant temperature oven at 95°C for 6 hours, and then injected into standard specimens at a temperature of 225°C to 245°C for various mechanical property tests. The content of each component is calculated in ...

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Abstract

The invention discloses a PA / PP (polyamide / polypropylene) composite material and a preparation method thereof. The composite material comprises the following components in part by weight: 70-95 parts of PA / PP and 5-30 parts of compatilizer which are mixed together, wherein the proportion of polyamide and polypropylene in the PA / PP is 2 / 1-5 / 1; the compatilizer is polar block butadiene styrene rubber which is obtained by polymerization of polar monomers; the polar monomer is one or more in vinyl pyridine and derivatives thereof. In the PA / PP composite material, the toughness is ultrahigh, the impact resistance is high, especially higher impact strength can be resisted under low-temperature conditions and the influence on other mechanical properties is less; and in the preparation method, the process is simple and reliable, the industrial production is easy and the application prospect is better.

Description

technical field [0001] The invention relates to the field of macromolecular materials, in particular to a composite material of ultra-high toughness polyamide and polypropylene and a preparation method thereof. Background technique [0002] Polyamide (PA), commonly known as nylon, is a thermoplastic engineering plastic widely used in automobiles, electronics, machinery, instrumentation and other fields. PA has excellent wear resistance, oil resistance and wide temperature range. Its disadvantages are high water absorption, poor dimensional stability, low temperature and low dry impact strength, which largely limit its application. [0003] Polypropylene (PP) is a widely used thermoplastic. Its raw materials are rich in sources, low in price, and have good comprehensive properties. It occupies an important position in plastics. Compared with polyamide, polypropylene hardly absorbs water and is not affected by the humidity of the use environment, but polypropylene has disadva...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L23/12C08L23/14C08L53/02
Inventor 蔡涛金滟丁树岩刘善元元文芳石胜鹏
Owner CHINA PETROLEUM & CHEM CORP