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Highly filled micro foamed polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polymer materials, can solve the problem of inability to take into account the lightweight of materials, and achieve the effects of environmental protection, simple operation, and reduced production costs.

Inactive Publication Date: 2014-11-12
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used filling technology often pays more attention to the cost reduction achieved by increasing the mineral content, but it cannot take into account the lightweight of the material

Method used

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  • Highly filled micro foamed polypropylene composite material and preparation method thereof
  • Highly filled micro foamed polypropylene composite material and preparation method thereof
  • Highly filled micro foamed polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The melt index is 2g / 10min, and the IZOD impact strength is 50kJ / m 2 A mixture of 20 parts of polypropylene, 70 parts of talcum powder, 4.5 parts of ethylene-octene copolymer, 0.3 parts of antioxidant 168, and 0.2 parts of antioxidant 1010 was put into a high-speed mixer and mixed for 6 minutes. Then, the above group The mixture was extruded in a twin-screw extruder and pelletized. The barrel temperature of the twin-screw extruder is set at 170-270°C, and the screw speed is 50r / min; finally, 5 parts of foaming masterbatch and 95 parts of the above extruded pellets are evenly mixed, put into the single-screw extruder, and extruded Obtain highly filled micro-foamed polypropylene composites. The screw temperature is set at 160-240° C., and the screw speed is 50 r / min. The performance comparison of the obtained composite materials is shown in the table below:

[0013] Table 1 Performance comparison of highly filled micro-foamed materials and unfoamed materials

[0014] ...

Embodiment 2

[0016] The melt index is 15g / 10min, and the IZOD impact strength is 48kJ / m 2 A mixture of 50 parts of polypropylene, 40 parts of talcum powder, 1 part of EPDM, 1.2 parts of antioxidant 168, and 0.8 parts of antioxidant 1010 was put into a high-speed mixer and mixed for 3 minutes. Then, the above components The mixture is extruded and pelletized in a twin-screw extruder. The barrel temperature of the twin-screw extruder is set at 170-270°C, and the screw speed is 50r / min; finally, 7 parts of foaming masterbatch and 93 parts of the above-mentioned extruded pellets are evenly mixed, and added to the injection molding machine, and injection molding is obtained. Bubble high filled polypropylene composite. The barrel temperature of the injection molding machine is set at 180-240°C, the injection pressure is 60MPa, the injection speed is 80mm / s, and the cooling time is 10s. The performance comparison of the obtained composite materials is shown in the table below:

[0017] Table 2...

Embodiment 3

[0020] The melt index is 5g / 10min, and the IZOD impact strength is 56kJ / m 2 A mixture of 35 parts of polypropylene, 50 parts of talcum powder, 4 parts of ethylene-butylene copolymer, 0.6 part of antioxidant 168, and 0.4 part of antioxidant 1010 was put into a high-speed mixer and mixed for 5 minutes. Then, the above group The mixture was extruded in a twin-screw extruder and pelletized. The barrel temperature of the twin-screw extruder is set at 170-270°C, and the screw speed is 50r / min; finally, mix 10 parts of foaming masterbatch with 90 parts of the above-mentioned extruded pellets, add them to the injection molding machine, and inject them to obtain micro-foam Bubble high filled polypropylene composite. The barrel temperature of the injection molding machine is set at 180-240°C, the injection pressure is 40MPa, the injection speed is 40mm / s, and the cooling time is 30s. The performance comparison of the obtained composite materials is shown in the table below:

[0021] ...

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Abstract

The invention relates to a polypropylene composite material and a preparation method thereof, in particular to a highly filled micro foamed polypropylene composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The highly filled micro foamed polypropylene composite material comprises, by weight, 20-50 parts of polypropylene, 40-70 parts of inorganic powder, 0.5-10 parts of blowing master batch, 1-10 parts of toughening agents and 0.2-2 parts of antioxidants. The highly filled micro foamed polypropylene composite material has the advantages that on the premise that material performance is not lost, the weight of the material is obviously reduced, the impact property is improved, production cost is greatly lowered, and the highly filled micro foamed polypropylene composite material which is excellent in performance and friendly to environment is obtained. The highly filled micro foamed polypropylene composite material can be applied to inner and outer accessories of automobiles even a part of structure components, and light weight of automotive materials is achieved. The highly filled micro foamed polypropylene composite material can also be used for other fields such as building, electronics and packaging industries.

Description

technical field [0001] The invention relates to a polypropylene composite material and a preparation method thereof, in particular to a highly filled micro-foamed polypropylene composite material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Inorganic powder filled polymer composite material is prepared by mixing inorganic powder and polymer through certain processing technology, and then melt extrusion granulation process. Because the composite material contains a large amount of cheap inorganic powder, it can significantly reduce the cost of materials, and has been widely used in daily life, home decoration, packaging, automobiles, electronics and other fields, such as "shopping bags" in daily life, in cables "Filler rope" used in manufacturing, door panels, pillars, air-conditioning casings, weather strips, spoilers, wheel covers and other parts used in automobiles. Chinese patent CN102040778B discl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L23/16C08L23/06C08K3/34C08K3/26C08J9/08C08J9/10
CPCC08L23/12C08J9/0061C08J9/08C08J9/103C08J2203/02C08J2203/04C08J2323/12C08J2423/06C08J2423/08C08J2423/16C08L2203/14C08L2205/03C08L23/0815C08K3/34C08L23/16C08L23/06
Inventor 王滨吴汾蒋顶军汪信
Owner NANJING JULONG SCI&TECH CO LTD
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