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Light-stable polypropylene resin composition and preparation method thereof

A technology of polypropylene resin and polypropylene copolymer, which is applied in the field of light-stabilized polypropylene resin composition and its preparation, and can solve problems such as high prices

Active Publication Date: 2020-10-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Light stabilizers such as 944 are commonly used in polyolefin resin materials, but the current price exceeds 100,000 per ton, and the price of imported light stabilizer 944 remains high, which has become the main factor affecting the cost of polyolefin products

Method used

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  • Light-stable polypropylene resin composition and preparation method thereof
  • Light-stable polypropylene resin composition and preparation method thereof
  • Light-stable polypropylene resin composition and preparation method thereof

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preparation example Construction

[0050] The preparation method of the alternating copolymer of maleic anhydride and styrene comprises the following steps: under the condition of nitrogen protection, monomer maleic anhydride and azobisisobutyronitrile (AIBN) initiator are joined in the isoamyl acetate medium After fully dissolving, add styrene to dissolve in the system, and react at 70°C for 8 hours to obtain a dispersion system of alternating copolymer of maleic anhydride and styrene, then centrifuge and vacuum dry to obtain maleic anhydride and styrene The white solid of the alternating copolymer (being microspheroidal, average particle diameter 400nm; The molar content of maleic anhydride is 30%), standby. Wherein, the mass percent concentration of reactants in the dispersion system is 10%, and the amount of AIBN initiator is 1% of the mass of maleic anhydride.

[0051] The preparation method of the alternating copolymer of maleic anhydride and α-methylstyrene comprises the following steps: under the condit...

Embodiment 1

[0053] Get 1000g copolymerized polypropylene powder (M60ET, Zhenhai refining and chemical production, ethylene content 1%), add 0.5g antioxidant 1010 (BASF), 0.5g antioxidant 168 (Basf), 0.5g calcium stearate Cast ( Sinopharm Group Chemical Reagent Co., Ltd.), the alternating copolymer (average particle diameter 400nm, maleic anhydride molar content 30%) of 1g maleic anhydride and styrene, carry out initial mixing, then in twin-screw extruder, screw speed setting Set at 200r / min, set the processing temperature at 175°C, extrude and granulate, and then prepare samples by injection for performance testing.

Embodiment 2

[0055] Get 1000g polypropylene powder (M60ET, produced by Zhenhai Refinery, ethylene content 1%), add 0.5g antioxidant 1010 (BASF), 0.5g antioxidant 168 (Basf), 0.5g calcium stearate Cast (Chinese medicine Group Chemical Reagent Co., Ltd.), 1g of alternating copolymers of maleic anhydride and styrene were initially mixed, and then in a twin-screw extruder, the screw speed was set at 200r / min, and the processing temperature was set at 175°C. After granulation, samples are prepared by injection for performance testing. The UV treatment time is 24h.

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Abstract

The invention relates to a light-stable polypropylene resin composition and a preparation method thereof, belonging to the field of synthetic resin. The light-stable polypropylene resin composition comprises the following blended components: a, polypropylene copolymer matrix resin; and b, an alternating copolymer microsphere, wherein based on 100 parts by weight of the polypropylene copolymer matrix resin, the weight of the alternating copolymer microsphere is 0.01-10 parts; the alternating copolymer microsphere comprises an anhydride monomer and an olefin monomer, and the anhydride monomer ismaleic anhydride; an the average particle size of the alternating copolymer microsphere is 0.01-20 microns. According to the light-stable polypropylene resin composition in the invention, the resin composition can be prepared by one-time melt blending of all components including matrix polypropylene resin, the alternating copolymer microsphere and the like; the preparation method is simple and easy to implement; and the resin composition has light stability, thermal stability and chemical stability, does not change due to heat during processing and use, and is small in thermal volatilizationloss, resistant to hydrolysis, low in price and easy to promote and use.

Description

technical field [0001] The invention relates to the field of synthetic resins, in particular to a light-stable polypropylene resin composition and a preparation method thereof. Background technique [0002] Polypropylene copolymer resin has low density, good rigidity, high strength, flex resistance, good heat resistance, electrical insulation and chemical resistance, and is rich in raw materials, low in price, easy to process and shape, and has been widely used Used in home appliances, furniture, automobiles, daily necessities and packaging. [0003] However, the polypropylene copolymer resin material has a key weakness, that is, due to the particularity of its molecular structure, it is affected by external factors such as solar ultraviolet light, heat, oxygen, moisture and microorganisms during its synthesis, storage, processing and final use. The qualitative change caused by the action of the material will reduce the performance of the material, such as yellowing, fading...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L35/06C08K5/098C08K5/134C08K5/526
CPCC08L23/14C08L23/16C08L2205/18C08L2201/08C08L35/06C08K5/098C08K5/1345C08K5/526
Inventor 赖金梅刘振杰张晓红宋文波蔡传伦张洁茹越蒋海斌戚桂村高建明张红彬宋志海李秉海王湘张江茹韩朋姜超郭照琰
Owner CHINA PETROLEUM & CHEM CORP
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