Polycarbonate composite material and preparation method thereof

A polycarbonate and composite material technology, applied in the field of polymer materials, can solve the problems of poor surface gloss and poor fluidity, and achieve the effects of good dimensional stability, simple formula and high efficiency

Inactive Publication Date: 2011-10-19
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a polycarbonate composite material and its preparation method, aiming to solve the problems of poor fluidity and poor surface gloss of polycarbonate composite materials in the prior art

Method used

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  • Polycarbonate composite material and preparation method thereof
  • Polycarbonate composite material and preparation method thereof
  • Polycarbonate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Components and weight percentages thereof of the polycarbonate composite material of the present embodiment are:

[0044] Polycarbonate 80%;

[0045] Flame retardant 5%;

[0046] Whiskers 5%;

[0047] Auxiliary 10%.

[0048]Among them, polycarbonate has a refractive index of 1.58 to 1.61, a transmittance of 88% to 90%, and a melt index of 10 to 30g / 10min (test conditions: 300°C / 1.2Kg); the flame retardant is an additive containing bromine and nitrogen. Type flame retardant; whisker is a mixture of calcium carbonate whisker and whisker silicon, its weight ratio is 1:1; additives include toughening agent, silane coupling agent, lubricant, antioxidant and flame retardant anti-dripping Dropping agent, based on 100% of the polycarbonate composite material gross weight, the weight percentages of the toughening agent, silane coupling agent, lubricant, antioxidant and flame retardant anti-dripping agent are respectively as follows:

[0049] Toughener 4%;

[0050] Silane co...

Embodiment 2

[0071] Components and weight percentages thereof of the polycarbonate composite material of the present embodiment are:

[0072] Polycarbonate 83%;

[0073] Flame retardant 3%;

[0074] Whiskers 8%;

[0075] Auxiliary 6%.

[0076] Among them, polycarbonate has a refractive index of 1.58 to 1.61, a transmittance of 88% to 90%, and a melt index of 10 to 30g / 10min (test conditions: 300°C / 1.2Kg); the flame retardant is an additive containing bromine and nitrogen. Type flame retardant; whisker is the mixture of calcium carbonate whisker and whisker silicon, and its weight ratio is 1: 1, and calcium carbonate whisker adopts the preparation method of calcium carbonate whisker in embodiment 1; Auxiliary agent comprises toughening agent , silane coupling agent, lubricant, antioxidant and flame retardant anti-dripping agent, based on 100% of the total weight of the polycarbonate composite material, the toughening agent, silane coupling agent, lubricant, antioxidant The weight percen...

Embodiment 3

[0085] Components and weight percentages thereof of the polycarbonate composite material of the present embodiment are:

[0086] Polycarbonate 86%;

[0087] Flame retardant 2%;

[0088] Whiskers 4%;

[0089] Auxiliary 8%.

[0090] Among them, polycarbonate has a refractive index of 1.58 to 1.61, a transmittance of 88% to 90%, and a melt index of 10 to 30g / 10min (test conditions: 300°C / 1.2Kg); the flame retardant is an additive containing bromine and nitrogen. Type flame retardant; whisker is the mixture of calcium carbonate whisker and whisker silicon, and its weight ratio is 1: 1, and calcium carbonate whisker adopts the preparation method of calcium carbonate whisker in embodiment 1; Auxiliary agent comprises toughening agent , silane coupling agent, lubricant, antioxidant and flame retardant anti-dripping agent, based on 100% of the total weight of the polycarbonate composite material, the toughening agent, silane coupling agent, lubricant, antioxidant The weight percen...

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Abstract

The invention provides a polycarbonate composite material. The polycarbonate composite material comprises the following components by weight percent: 80-90% of polycarbonate, 2-6% of fire retardant, 3-10% of crystal whisker and 4-16% of addition agent. The invention also provides a preparation method of the polycarbonate composite material. The preparation method comprises the following steps of: selecting the raw materials according to weight percents and mixing the raw materials to obtain a mixed raw material; and then placing the mixed raw material into a double-screw extruder to carry out melt extrusion and then granulating to obtain the polycarbonate composite material. The polycarbonate composite material provided by the invention has the advantages of good fluidity for molding, good processing performance, high strength, good size stability, good fire resistance, high surface glossiness and the like; and the polycarbonate composite material has a great application prospect on a liquid crystal television bracket, a connector, an ammeter shell and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polycarbonate composite material and a preparation method thereof. Background technique [0002] Whiskers refer to a fiber grown in the form of a single crystal under artificially controlled conditions. Its diameter is very small (on the order of microns), and it does not contain defects (grain boundaries, dislocations, holes, etc.) The arrangement is highly ordered, so its strength is close to the theoretical value of a complete crystal. Its mechanical strength is equal to the force between adjacent atoms. The highly oriented structure of whiskers not only makes them have high strength, high modulus and high elongation, but also has electrical, optical, magnetic, dielectric, conductive, and superconductive properties. The strength of whiskers is much higher than that of other chopped fibers, and it is mainly used as a reinforcement of composite material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K13/04C08K7/08C08K7/10C08K5/544C08K5/526B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 徐东徐永何杰
Owner SHENZHEN KEJU NEW MATERIAL
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