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Polycarbonate composite material

A technology of polycarbonate and composite materials, which is applied in the field of polymer material modification, can solve the problems that affect the thermal deformation temperature of products, flow properties, ductility reduction, and sudden drop in molding toughness, etc., and achieve excellent molding stability and color Effects of Stability and Excellent Flexural Modulus

Active Publication Date: 2016-04-13
KINGFA SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Better rigidity can be obtained by adding fillers in polycarbonate, but the ductility will be greatly reduced
In order to improve the impact strength of the material, there is currently a technology to improve the impact strength of the composition by adding an impact modifier, but it will affect the heat distortion temperature and flow properties of the product, and there are also technologies through the selection of filler size or surface treatment To improve the impact strength, but the increase is not large, the effect is not obvious
[0004] In addition, the added filler will inevitably bring basic metal ions, the presence of basic metal ions will not only affect the color of the filler, but also cause a sudden drop in molding toughness and a decrease in molding stability in PC products

Method used

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  • Polycarbonate composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1-14 and comparative example 1-2

[0059] Embodiment 1-14 and comparative example 1-2: the preparation of polycarbonate composite material

[0060] According to the formula shown in Table 1, polycarbonate, ABS resin, copper-containing compound, iron-containing elemental substance, iron-containing compound, and filler are blended in a high-mixer to obtain a pretreated resin matrix; the pretreated resin matrix After weighing with other additives according to the proportion, blending is completed by a high-speed mixer or a mixer, the extrusion temperature is 240 ° C, cooled by water, and granulated to obtain a polycarbonate composite material of columnar particles. The ratio of each component and performance test results are shown in Table 1.

[0061] Various performance evaluation methods:

[0062] (1) Flexural modulus:

[0063] The polycarbonate composite material was injection molded at an injection temperature of 260°C, the mold temperature was 100°C, and the test piece with a sample size of 12.6mm*3.2mm and...

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Abstract

The invention discloses a polycarbonate composite material, which is prepared from the following components in terms of parts by weight: 30 to 80 parts of polycarbonate, 5 to 40 parts of ABS (Acrylonitrile-butadiene-styrene) and 5 to 80 parts of fillers, wherein on the basis of the total weight of the polycarbonate composite material, the weight content of iron element is 0.1 to 50 ppm, and the weight content of copper element is 0.01 to 20 ppm. Discovered in surprise, trace amount of the iron element and the copper element are added in the composite material, the content of the iron element in the composite material is controlled in the range of 0.1 to 50 ppm, and the content of the copper element in the composite material is controlled in the range of 0.01 to 20 ppm, so that not only can the pretreatment on filler powder be avoided, but also alkaline ions in a system can be stabilized, and color darkening and performance damage caused by the bringing of a screw rod or other metal are reduced, therefore the prepared polycarbonate composite material has the advantages that obviously improved impact strength, bending toughness and molding toughness are obtained, the rigidity brought by the fillers can be also considered, and excellent molding use stability and excellent color stability are obtained.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and in particular relates to a polycarbonate composite material with significantly improved impact strength and molding toughness and stable long-term performance. Background technique [0002] Polycarbonate PC has excellent heat resistance and high impact resistance, and is widely used in the field of exterior materials such as electrical / electronic products and automotive parts. In recent years, the thinning of molded articles molded from resin compositions has progressed, and demands for improvement in various physical properties of molded articles have been increasing. [0003] Better rigidity can be obtained by adding fillers in polycarbonate, but the ductility will be greatly reduced. In order to improve the impact strength of materials, there is currently a technology to improve the impact strength of the composition by adding an impact modifier, but it will affect the heat di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/04C08K9/00C08K3/34C08K3/16C08K3/28C08K3/08
CPCC08K2201/006C08L69/00C08L2205/03C08L55/02C08L51/04C08K9/00C08K3/34C08K3/16C08K2003/0856C08K3/28C08K3/346C08K2003/085C08K2003/3045C08K2003/3072C08K9/04
Inventor 岑茵佟伟艾军伟谢修好董相茂陈勇文孙东海叶南飚
Owner KINGFA SCI & TECH CO LTD
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