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Polypropylene composition toughened by elastomer and preparation method of composition

A polypropylene composition and elastomer technology, applied in the field of elastomer toughened polypropylene composition and its preparation, can solve problems such as insufficient toughness of polypropylene, and achieve the effects of good fluidity, lower cost and better compatibility

Active Publication Date: 2014-09-17
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to overcome the defect of insufficient toughness of polypropylene, the object of the present invention is to provide an elastomer toughened polypropylene composition, which has good toughness at room temperature and low temperature

Method used

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  • Polypropylene composition toughened by elastomer and preparation method of composition

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Put 50 parts of homopolypropylene, 5 parts of metallocene propylene-ethylene elastomer, 20 parts of talc, 0.1 part of antioxidant 1010, and 0.2 part of antioxidant 168 into a high-speed mixer for 3-5 minutes. The mixed raw materials are melt-extruded with a twin-screw extruder and pelletized. The temperature of the feed section is 160°C, the temperature of the compression section is 180°C, the temperature of the plasticizing section is 200°C, the temperature of the homogenization section is 200°C, and the temperature of the die opening is 190°C.

[0039]

Embodiment 2

[0044] Put 70 parts of random copolymer polypropylene, 3 parts of metallocene propylene-ethylene elastomer, 12 parts of calcium carbonate, 0.15 parts of antioxidant 1010, and 0.3 parts of antioxidant 168 into a high-speed mixer and dry mix for 3-5 minutes , melt and extrude the mixed raw materials with a twin-screw extruder, and granulate. The temperature of the feed section is 180°C, the temperature of the compression section is 220°C, the temperature of the plasticizing section is 220°C, the temperature of the homogenization section is 220°C, and the temperature of the die mouth is 220°C.

[0045]

Embodiment 3

[0050] Put 90 parts of block copolymer polypropylene, 1 part of metallocene propylene-ethylene elastomer, 5 parts of barium sulfate, 0.2 parts of antioxidant 1010, and 0.4 parts of antioxidant 168 into a high-speed mixer and dry mix for 3-5 minutes , melt and extrude the mixed raw materials with a twin-screw extruder, and granulate. The temperature of the feed section is 170°C, the temperature of the compression section is 200°C, the temperature of the plasticizing section is 210°C, the temperature of the homogenization section is 210°C, and the temperature of the die mouth is 200°C.

[0051]

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Abstract

The invention provides a polypropylene composition toughened by elastomer and a preparation method of the composition. The composition is prepared from 50-90 parts of polypropylene, 1-5 parts of metallocene propylene-ethylene elastomer, 5-20 parts of inorganic filler and 0.3-0.6 part of antioxidant through mixing and extruding, wherein the metallocene propylene-ethylene elastomer is linear propylene-ethylene copolymer with density of 0.8-0.90g / cm<3>, melt index of 20-30g / 10min and weight-average molecular weight of 30000-50000; mass content of the ethylene in the linear propylene-ethylene copolymer is 5%-20%. The elastomer toughening polypropylene composition provided by the invention adopts the metallocene propylene-ethylene elastomer as a toughening agent which is less in dosage, so that not only can toughness of the polypropylene composition be greatly increased, but also composition cost can be reduced.

Description

[0001] technical field [0002] The invention belongs to the technical field of polymer composite materials, and relates to an elastomer toughened polypropylene composition and a preparation method thereof. [0003] Background technique [0004] Polypropylene (PP) has a simple synthesis process, good balance, easy processing, high performance and low price, and has become one of the fastest growing varieties of plastics. However, the poor toughness of polypropylene, especially at low temperature, limits its application. [0005] There are many ways to improve the toughness of polypropylene, and there are two main ways: [0006] 1. Chemical modification, adding a certain amount of ethylene during the polymerization of polypropylene, allowing ethylene and propylene to copolymerize to form ethylene-propylene rubber for toughening; [0007] 2. Physical modification, toughening by melt blending polypropylene and elastomer. [0008] At present, the most common method of toughe...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L53/00C08L23/16C08K3/34C08K5/134C08K5/526C08K3/26C08K3/30B29B9/06B29C47/92B29C48/92
CPCB29C47/0011B29C47/92B29B9/06B29C48/92B29C2948/92704C08L23/12C08L23/14C08L53/00C08L2205/025C08L2207/04C08K3/34C08K2003/265C08K2003/3045B29C48/04B29C48/40B29C2948/92895B29C2948/92904
Inventor 杨桂生方永炜
Owner HEFEI GENIUS NEW MATERIALS
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