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PC (polycarbonate) composite with high wear resistance and high strength and preparation method of PC composite

A technology of polycarbonate and composite materials, which is applied in the field of high wear-resistant and high-strength polycarbonate composite materials and its preparation, can solve the problems of insufficient wear resistance and mechanical properties, achieve excellent physical and mechanical properties, improve adhesion, high intensity effect

Inactive Publication Date: 2018-05-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the first purpose of the present invention is to provide a high wear-resistant high-strength polycarbonate composite material to overcome the problems of insufficient wear resistance and mechanical properties of existing polycarbonate materials; the present invention The second purpose of the present invention is to provide a method for preparing polycarbonate composite materials with simple process and low production cost

Method used

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  • PC (polycarbonate) composite with high wear resistance and high strength and preparation method of PC composite
  • PC (polycarbonate) composite with high wear resistance and high strength and preparation method of PC composite

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The mass ratio of raw materials in this embodiment is: 80 parts of polycarbonate, 10 parts of polytetrafluoroethylene micropowder wax (average particle diameter 5 μm), 2 parts of nano silicon dioxide, 3 parts of solubilizer, 5 parts of glass fiber roving share.

[0024] Preparation:

[0025] (1) Weigh the raw materials polycarbonate, polytetrafluoroethylene micropowder wax, nano-silica, and solubilizer according to the above ratio, and add them to a high-speed mixer and mix for about 30 minutes;

[0026] (2) Put the mixture obtained in step (1) into the hopper of the extruder, and the glass fiber is fed into the extruder from the glass fiber inlet for co-extrusion granulation. The extrusion temperature is about: 260°C in the first zone and 275°C in the second zone , the third zone is 280°C, the fourth zone is 290°C, the fifth zone is 290°C, the sixth zone is 290°C, the seventh zone is 280°C;

[0027] (3) The pellets obtained in step (2) were injection-molded in an inj...

Embodiment 2

[0030] The mass ratio of raw materials in this embodiment is: 65 parts of polycarbonate, 15 parts of polytetrafluoroethylene micropowder wax (average particle size 5 μm), 3 parts of nano-mica, 5 parts of solubilizer, and 12 parts of glass fiber roving.

[0031] Preparation:

[0032] (1) Weigh the raw materials polycarbonate, polytetrafluoroethylene micro-powder wax, nano-mica, and solubilizer according to the above ratio, and add them to a high-speed mixer, and mix for about 30 minutes;

[0033] (2) Put the mixture obtained in step (1) into the hopper of the extruder, and the glass fiber is fed into the extruder from the glass fiber inlet for co-extrusion granulation. The extrusion temperature is about: 270°C in the first zone and 285°C in the second zone , the third zone is 290°C, the fourth zone is 295°C, the fifth zone is 295°C, the sixth zone is 295°C, and the seventh zone is 295°C;

[0034] (3) Inject the pellets obtained in step (2) into an injection molding machine at ...

Embodiment 3

[0037] The mass ratio of raw materials in this embodiment is: 58 parts of polycarbonate, 20 parts of polytetrafluoroethylene micropowder wax (average particle size 5 μm), 3 parts of zirconium phosphate, 4 parts of solubilizer, and 15 parts of glass fiber roving.

[0038] Preparation:

[0039] (1) Weigh the raw materials polycarbonate, polytetrafluoroethylene micro-powder wax, zirconium phosphate, and solubilizer according to the above ratio, and add them to the high-speed mixer, and mix for about 30 minutes;

[0040] (2) Put the mixture obtained in step (1) into the hopper of the extruder, and the glass fiber is fed into the extruder from the glass fiber inlet for co-extrusion granulation. The extrusion temperature is about: 270°C in the first zone and 280°C in the second zone , the third zone is 290°C, the fourth zone is 295°C, the fifth zone is 295°C, the sixth zone is 295°C, and the seventh zone is 295°C;

[0041] (3) The pellets obtained in step (2) are injection-molded i...

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Abstract

The invention provides a PC (polycarbonate) composite with high wear resistance and high strength and a preparation method of the PC composite. The composite comprises main raw materials as follows: bisphenol A PC, fluorine-containing polymer micronized wax, glass fiber, a solubilizer and a flow modifier. Firstly, the raw materials except the glass fiber are added to a mixer for sufficient mixing,then the mixed material and the glass fiber are added to an extrusion machine for blending extrusion and granulation, and finally, granules are added to an injection molding machine for injection molding. The adopted fluorine-containing micronized wax has smaller grain size, is an organic high-molecular compound, is easily dispersed in a PC matrix and keeps better compatibility and interfacial adhesion property with matrix resin. Meanwhile, with addition of the solubilizer, compatibility between the PC and the glass fiber and compatibility between the fluorine-containing micronized wax and the glass fiber can be remarkably improved, so that the prepared composite has good wear resistance and mechanical performance, and can be widely used for manufacturing products meeting requirements forhigh wear resistance, high strength and better toughness.

Description

technical field [0001] The invention belongs to the field of special polymer materials, and in particular relates to a high wear-resistant high-strength polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is a general term for a class of polymers containing carbonate groups (-OROCO-) in the molecular chain. PC is a good engineering plastic with excellent impact toughness, transparency, dimensional stability, electrical insulation, creep resistance, weather resistance, non-toxicity, etc., and has a wide temperature range and wide adaptability. Due to the above advantages, it is widely used in the fields of electronics and electrical, transportation, instrumentation, construction engineering, mechanical equipment, electrical lighting and so on. Although PC has good comprehensive performance, it also has disadvantages such as easy stress cracking, sensitivity to notch, poor wear resistance and poor melt fluidity. ...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L27/18C08K3/36C08K7/14C08K5/20C08K3/34C08K3/32
CPCC08K2003/328C08K2201/011C08L69/00C08L2201/08C08L27/18C08K3/36C08K7/14C08K5/20C08K3/34C08K3/32
Inventor 董振强张晟
Owner SICHUAN UNIV
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