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Polypropylene-basic magnesium sulfate whisker composite material for thin-wall automotive product

A technology of magnesium sulfate whiskers and composite materials, which is applied in the field of polymer materials, can solve problems such as not being able to meet the high rigidity of materials, and achieve the effects of strong rigidity, low density and strong applicability

Inactive Publication Date: 2019-07-12
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN106366454A discloses a modified polypropylene material for high-performance thin-walled automobile door panels and its preparation method, which can achieve high flow, high rigidity and high toughness, but cannot maintain high rigidity under low-density conditions

Method used

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  • Polypropylene-basic magnesium sulfate whisker composite material for thin-wall automotive product
  • Polypropylene-basic magnesium sulfate whisker composite material for thin-wall automotive product
  • Polypropylene-basic magnesium sulfate whisker composite material for thin-wall automotive product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Be the high flow polypropylene of 83.4 parts by weight, the elastomer of 10 parts, the basic magnesium sulfate whisker master batch of 6 parts (whisker active ingredient is 80%), 0.2 part of antioxidant A, 0.2 part of antioxidant Add agent B and 0.2 parts of weathering agent into the mixer and mix evenly. Wherein, the temperature of the mixer is 63° C., and the rotation speed of the mixer is 130 rpm, and then the mixed material is put into a twin-screw extruder for extrusion, cooling, granulation, and packing. The temperature of the extruder is 180°C, 195°C, 195°C, 190°C, 190°C, 190°C, 185°C, 185°C from the feeding section to the machine head, the screw speed is 180 rpm, and the screw length-to-diameter ratio It is 36:1.

Embodiment 2

[0032] The parts by weight are 76.9 parts of high flow polypropylene, 10 parts of elastomer, 12.5 parts of basic magnesium sulfate whisker masterbatch (whisker active ingredient is 80%), 0.2 part of antioxidant A, 0.2 part of antioxidant Add agent B and 0.2 parts of weathering agent into the mixer and mix evenly. Wherein, the temperature of the mixer is 63° C., and the rotation speed of the mixer is 130 rpm. Then put the mixed material into a twin-screw extruder for extrusion, cooling, granulation, and packaging. The temperature of the extruder is 180°C, 195°C, 195°C, 190°C, 190°C, 190°C, 185°C, 185°C from the feeding section to the machine head, the screw speed is 180 rpm, and the screw length-to-diameter ratio is 36:1.

Embodiment 3

[0044] Be the high flow polypropylene of 73.4 parts by weight, the elastomer of 20 parts, the basic magnesium sulfate whisker master batch of 6 parts (whisker active ingredient is 80%), 0.2 part of antioxidant A, 0.2 part of antioxidant Add agent B and 0.2 parts of weathering agent into the mixer and mix evenly. Wherein, the temperature of the mixer is 63° C., and the rotation speed of the mixer is 130 rpm. Then put the mixed material into a twin-screw extruder for extrusion, cooling, granulation, and packaging. The temperature of the extruder is 180°C, 195°C, 195°C, 190°C, 190°C, 190°C, 185°C, 185°C from the feeding section to the machine head, the screw speed is 180 rpm, and the screw length-to-diameter ratio is 36:1.

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Abstract

The invention discloses a low-density polypropylene-basic magnesium sulfate whisker composite material for a thin-wall automotive product. The material is prepared from, by mass, 70-84.6% of polypropylene, 5-10% of a basic magnesium sulfate whisker masterbatch, 10-20% of a toughening elastomer, 0.2-0.6% of an antioxidant and 0.2-0.6% of a weathering agent. The composite material with high flow, high rigidity and high toughness is obtained by the synergistic action of high fluidity polypropylene, a high-performance filler and high-efficiency elastomer toughening. According to the whisker masterbatch, it is ensured that the dispersion of the whisker is good and the process operability is strong. The polypropylene-based magnesium sulfate whisker composite material has the rigidity comparableto that of a short-fiber reinforced polypropylene material at a low density, maintains superior toughness and has a good appearance.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polypropylene-basic magnesium sulfate whisker composite material used for thin-walled automobile products. Background technique [0002] With the development of society, people's awareness of environmental protection is gradually increasing. Due to the needs of environmental protection and energy saving, automobile lightweight has become the trend of the world's automobile development. The lightweight of the car refers to reducing the overall quality of the car as much as possible on the premise of ensuring the strength and safety performance of the car, so as to improve the power of the car, reduce fuel consumption, and reduce exhaust pollution. Experiments have shown that if the mass of the car is reduced by half, the fuel consumption will also be reduced by nearly half. [0003] The material composition of modern automobiles, whether it is exterior parts, interior parts, or...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L9/00C08L23/08C08L23/16C08K7/08C08K5/134C08K5/526C08K5/20C08K5/3475C08K13/04
CPCC08K2201/003C08K2201/004C08K2201/016C08L23/12C08L23/14C08L9/00C08L23/0815C08L23/16C08K7/08C08K5/1345C08K5/526C08K5/20C08K5/3475C08K13/04
Inventor 赵鹏伟陈延安张引龙
Owner SHANGHAI KINGFA SCI & TECH
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