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Nanometer calcium carbonate polypropylene composite material

A technology of calcium carbonate polypropylene and nano-calcium carbonate, which is applied in the field of polypropylene composite materials, can solve the problems of low temperature resistance that cannot be ignored, and does not mention improving the low temperature impact resistance of composite materials, and achieves the effect of improving low temperature impact resistance

Inactive Publication Date: 2008-07-02
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Izod notched impact strength of this composite material is 1-6 times that of pure polypropylene resin, and the tensile strength, flexural modulus, Rockwell hardness and heat distortion temperature are also all improved compared with pure polypropylene, but this patent There is no mention of improving the low-temperature impact resistance of composite materials, but in the automotive field, especially for automotive exterior parts such as bumpers and fenders, the low-temperature resistance of materials is a performance that cannot be ignored

Method used

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  • Nanometer calcium carbonate polypropylene composite material
  • Nanometer calcium carbonate polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: 100 parts of impact copolymer polypropylene with a melt flow rate of 20g / 10min, adding 18 parts of EPDM, 14 parts of n-CaCO 3 Masterbatch (n-CaCO 3 Content 60wt%), 0.2 part of 1010, 0.15 part of 168, 0.3 part of UV-326, 0.1 part of calcium stearate, melt blending, extruding and granulating through a twin-screw extruder. The properties are shown in Table 1.

Embodiment 2

[0028] Example 2: Add 15 parts of EPDM, 10 parts of n-CaCO to 100 parts of impact copolymer polypropylene with a melt flow rate of 15g / 10min 3 Masterbatch, 0.2 part of 1010, 0.15 part of 168, 0.3 part of UV-326, 0.1 part of calcium stearate, melted, mixed, extruded and granulated by twin-screw extruder. The properties are shown in Table 1.

Embodiment 3

[0029] Example 3: Add 6 parts of n-CaCO3 powder, 1 part of SBS, 0.2 part of 1010, 0.15 part of 168, 0.3 part of 622, 0.1 part of hard Calcium fatty acid, melted and blended in internal mixer, extruded, pelletized. The properties are shown in Table 1.

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Abstract

The invention discloses nano calcium carbonate polypropylene composite material. The composite material comprises 100 portions of polypropylene resin, 1 to 15 portions of nano calcium carbonate, 1 to 20 portions of elastomer, and 0.1 to 1 portion of stabilizing agent. The composite material is prepared by method of melt compounding by adopting an internal mixer or double screw extruder. Good rigidity is kept when the toughness of the composite is obviously improved; the composite has good cold impact resistance performance, and is applicable to injection moulding production of automobile parts, i.e. bumper, mudguard, etc.

Description

Technical field: [0001] The invention relates to a polypropylene composite material, in particular to a composite material composed of nanometer calcium carbonate and polypropylene. Background technique: [0002] In order to achieve energy saving, environmental protection and reduce vehicle cost to improve market competitiveness, the automotive industry has increasingly strong requirements for lightweight, recyclable and low-cost materials in recent years. Plastics and their composites are among the most important automotive lightweight materials. [0003] Polypropylene is light in weight, cheap, easy to process, recyclable and relatively mature in modification technology, and its application in auto parts is becoming more and more extensive. [0004] Generally, auto parts require materials with a good balance of rigidity and toughness, that is, materials with good impact resistance and high flexural modulus. Since polypropylene is a highly crystalline polymer, it has disa...

Claims

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Application Information

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IPC IPC(8): C08L23/10C08K9/00C08L23/16C08L53/02C08K3/26C08K5/09
Inventor 孙颜文赵红竹彭金瑞王小涓张立红左英飞
Owner CHINA PETROLEUM & CHEM CORP
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