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Non-elastomer/polypropylene blended composite material

A non-elastomeric and composite material technology, applied in the field of non-elastomeric/polypropylene blended composite materials, can solve the problems of insufficient wear resistance, reduced use temperature and processing performance, high brittleness, etc., and achieves a simple and easy-to-operate preparation method. , excellent corrosion resistance, low cost effect

Inactive Publication Date: 2014-06-25
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although polypropylene has many advantages, it still has many disadvantages when used as a structural material: poor toughness, insufficient wear resistance, greater brittleness at low temperatures, etc.
There are some insurmountable problems in the toughening of elastomers, such as the impact strength, elongation at break and work of break of the material increase while the stiffness, service temperature and processing performance are greatly reduced

Method used

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  • Non-elastomer/polypropylene blended composite material
  • Non-elastomer/polypropylene blended composite material
  • Non-elastomer/polypropylene blended composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 750g of PP1330, 750g of UHMWPE and 3500g of PP1300, and add 25g each of Antioxidant-1010 and Antioxidant-168. Dry each raw material at 80-90°C for 2-3 hours, mix PP1300, part of PP1330 and part of UHMWPE with a twin-screw extruder to knead and granulate pellet a, and then mix pellet a with the rest of PP1330 and the rest A certain amount of UHMWPE is mixed and then mixed and granulated with a twin-screw extruder to obtain pellet b; the pellet b is injection-molded to obtain a blended composite material. According to the standard GB / T1040.2-2006, the tensile strength is 21.61MPa, and the impact strength is 34.47KJ / m according to the standard GB / T1843-2008 2 .

Embodiment 2

[0029] Weigh 250g of PP1330, 250g of HDPE6098, 500g of UHMWPE and 4000g of PP1300, and add 25g each of antioxidant-1010 and antioxidant-168. Dry the raw materials at 80-90°C for 2-3 hours, mix PP1300, part of PP1330, part of HDPE6098 and part of UHMWPE with a twin-screw extruder to obtain pellet a, and then mix pellet a with the rest of PP1330 , the balance of HDPE6098 and the balance of UHMWPE are mixed and then kneaded and granulated by a twin-screw extruder to obtain pellet b; the pellet b is injection-molded to obtain a blended composite material. According to the standard GB / T1040.2-2006, the tensile strength is 21.42MPa, and the impact strength is 32.18KJ / m according to the standard GB / T1843-2008 2 .

Embodiment 3

[0031] Weigh 300g of PP1330, 250g of HDPE6098, 650g of UHMWPE and 3800g of PP1300, and add 25g each of antioxidant-1010 and antioxidant-168. Dry the raw materials at 80-90°C for 2-3 hours, mix PP1300, part of PP1330, part of HDPE6098 and part of UHMWPE with a twin-screw extruder to obtain pellet a, and then mix pellet a with the rest of PP1330 , the balance of HDPE6098 and the balance of UHMWPE are mixed and then kneaded and granulated by a twin-screw extruder to obtain pellet b; the pellet b is injection-molded to obtain a blended composite material. According to the standard GB / T1040.2-2006, the tensile strength is 23.53MPa, and the impact strength is 33.16KJ / m according to the standard GB / T1843-2008 2 .

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Abstract

The invention discloses a non-elastomer / polypropylene blended composite material. The composite material is obtained by taking a polypropylene homopolymer as a matrix material and polyethylene and / or ethylene-propylene copolymers as non-elastomers to carry out mechanical blending modification after adding an antioxidant, wherein the mass ratio of the matrix material to the non-elastomers is (70-90):(30-10); and the additive amount of the antioxidant is 0.5-1.5% of the total mass of the matrix material and the non-elastomers. The blended composite material is obtained by carrying out extruding granulation on the raw materials after mixing the raw materials and then carrying out injection molding. The tensile strength of the blended composite material is not less than 20MPa and the impact strength is not less than 30kJ / m<2>.

Description

1. Technical field [0001] The invention relates to a polymer composite material, in particular to a non-elastomer / polypropylene blend composite material. 2. Background technology [0002] Polypropylene (PP) has developed extremely rapidly since its industrialization in 1957, and is a general-purpose plastic with a wide range of applications. Polypropylene has excellent properties such as high transparency, non-toxicity, light specific gravity, easy processing, high impact strength, chemical corrosion resistance, good flex resistance, and good electrical insulation. Most of polypropylene is used for injection molding, and it is easy to modify through blending, copolymerization, filling, reinforcement and other technological measures. It can also be used to produce films, sheets, pipes, monofilaments, etc. by extrusion and blow molding. In addition to daily necessities, it also manufactures industrial parts such as construction, mechanical parts, electrical devices, fibers, c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/16C08L23/04C08K5/134C08K5/524
Inventor 史铁钧张明
Owner HEFEI UNIV OF TECH
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