Sprayable and toughened polypropylene composition and preparation method thereof

A polypropylene composition and composition technology, applied in the field of polypropylene composition and its preparation, can solve the problems of large amount of rubber addition and high material cost, achieve surface polarity improvement, improve surface coating performance, and have good application prospects Effect

Active Publication Date: 2010-03-31
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the amount of rubber added in this invention is relatively large, and the cost of the prepared material is relatively high

Method used

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  • Sprayable and toughened polypropylene composition and preparation method thereof

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Embodiment 1～3

[0024] Polypropylene (K9020, Beijing Yanhua Petrochemical Co., Ltd.), ethylene-octene copolymer (POE, American DUPONT company, melt index 0.5g / 10min), polarized SDS (SDS, Baling Petrochemical Co., Ltd. company, its number-average molecular weight is 84,300, the grafting rate is 3.0%, the polar monomer is 2-vinylpyridine, 4-vinylpyridine and its isomer mixture), antioxidant B225 (Switzerland CIBA Company), lubricant (calcium stearate, Tianjin Plastic Auxiliary Factory), put into a low-speed mixer and stir evenly, so that each component is fully mixed evenly. The above mixed material was extruded and granulated in a twin-screw extruder (TE-30, Nanjing Ruiya Company) at a temperature of 190-210°C. Dry the extruded pellets in a constant temperature oven at 80°C for 6 hours, and then inject them into standard specimens at a temperature of 190-210°C for various mechanical and surface performance tests. The specific formula is shown in Table 1, wherein the contents of each component...

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Abstract

The invention provides a sprayable and toughened polypropylene composition, which contains the following blended components: 100 weight parts of acrylic resin, 5 to 30 weight parts of thermoplastic polyolefin elastomer, and 5 to 30 weight parts of thermoplastic elastomer graft, wherein the thermoplastic polyolefin elastomer is an ethylene-octene copolymer; and the thermoplastic elastomer graft isa styrene-butadiene-styrene block copolymer or a graft of a styrene-pentadiene-styrene block copolymer and a polar monomer, and the polar monomer is at least one of 2-vinylpyridine, 4-vinylpyridine orisomers thereof. The sprayable polypropylene composition is prepared by melt blending of the components. The polypropylene composition has good toughness and sprayable performance.

Description

technical field [0001] The invention relates to a polypropylene composition and a preparation method thereof. In particular, it relates to a sprayable, toughened polypropylene composition and a method for its preparation. technical background [0002] Polypropylene is a widely used thermoplastic, with rich sources of raw materials, low price, good comprehensive performance, and occupies an important position in plastics. However, the most prominent disadvantages of polypropylene are low notched impact strength and poor surface finish, which limit its application. [0003] In the past, rubber or elastomer was mostly used to toughen polypropylene, but the rigidity, tensile strength, service temperature and processing performance of the material were greatly reduced. Since the 1980s, people have used both elastomers and inorganic particles in the modification of polypropylene in order to obtain composite materials with both toughness and rigidity. However, in these composite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L51/06
Inventor 蔡涛金滟丁树岩石胜鹏刘善元张静陈绍梅
Owner CHINA PETROLEUM & CHEM CORP
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