Sprayable polyethylene composition and its preparing method
A technology of polypropylene composition and polypropylene resin, which is applied in the direction of coating, etc., can solve the problems of composite rigidity loss and poor comprehensive mechanical properties, and achieve good spraying performance, good balance of rigidity and toughness, sprayability, and simple process Effect
Inactive Publication Date: 2007-01-31
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
The polypropylene composites provided by the above patents have improved sprayability and impact resistance, but due to the addition of soft elastomers for toughening, the rigidity of the composites often suffers a large loss, making its mechanical comprehensiveness performance is not good
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1～3
[0032] Polypropylene resin (produced by Singapore TPC company, brand AW564, melt index 9g / 10min), fully vulcanized styrene-butadiene powder rubber (in the styrene-butadiene-50 emulsion of Lanhua latex research and development center, press 3% of the dry rubber weight of the styrene-butadiene emulsion After adding cross-linking aid trimethylolpropane triacrylate, carry out radiation vulcanization, radiation dose is 2.5Mrad, obtain after spray drying, average particle diameter is 100nm, gel content is 90.4% by weight), SEBS Thermoplastic elastomer (produced by Yueyang Petrochemical Company, brand YH501, molecular weight range MW is 60,000-90,000, S / B molar block ratio is 19 / 81), SEBS and maleic anhydride graft (shell company, Kraton FG1901 , grafting rate 1.8~2% density 0.91g / cm3) and antioxidant 1010 (Switzerland Ciba Geigy production) mixed batching, concrete composition is that 100 parts by weight meter is shown in Table 1 with polypropylene resin. The BUSS kneader is used fo...
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Abstract
The invention relates to a kind of polypropylene combination with spraying ability, which involves in spraying-able resin field. It contains the constituents such as blending polypropylene resin, thermoplastic elastomer and its grafts, styrene-butadiene powder rubber, and so on. Among those mentioned above, the part by weight of polypropylene is 100; the thermoplastic elastomer is hydrogenated styrene-butadiene-styrene block copolymer with 10-40 part by weight; the thermoplastic elastomer grafts are linear crooslinking copoly-grafting elastomer of hydrogenated styrene-butadiene-styrene block copolymer and polar monomer, with 2-15 part by weight; the styrene-butadiene powder rubber is styrene-butadiene rubber grain with gel content of more than or equal to 65wt% and average grain size of 50-150mm, with 1-20 part by weight. Melting and blending the constituents described above to get spraying-able polypropylene combination. The polypropylene combination has fine tenacity and spraying ability, and meanwhile it can keep well rigidity.
Description
technical field [0001] The present invention relates to sprayable plastics, in particular, the present invention relates to a sprayable polypropylene composition and its preparation method. Background technique [0002] Polypropylene resin has a regular structure and high crystallinity, and is a synthetic resin with excellent comprehensive properties. The tensile, yield and other mechanical properties of polypropylene are higher than those of high-density polyethylene; the melting point of polypropylene is higher, and its products have better heat resistance; in addition, polypropylene has good chemical stability, high-frequency insulation, moisture-proof performance and Forming performance is better. Good comprehensive properties make polypropylene the most consumed plastic variety in the world. However, due to the high crystallinity of polypropylene and its non-polar molecular structure, its cold resistance (ie, low temperature impact) and paintability are poor. Product...
Claims
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IPC IPC(8): C09D123/12
Inventor 金滟杜丽利郑同利蔡涛丁树岩刘善元张静
Owner CHINA PETROLEUM & CHEM CORP