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A polycarbonate composite

A technology of polycarbonate and composite materials, which is applied in the field of polymer material modification, can solve the problems affecting the thermal deformation temperature of products, flow properties, ductility reduction, and ineffective effects, etc., and achieve excellent molding stability and color stability performance, excellent flexural modulus

Active Publication Date: 2017-05-31
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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  • A polycarbonate composite

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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 is injection molded at an injection temperature of 260°C, the mold temperature is 100°C, and the test piece with a sample size of 12.6mm*3.2mm and a...

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Abstract

The invention discloses a polycarbonate composite material, comprising 30-80 parts by weight of polycarbonate; 5-40 parts by weight of ABS; 5-80 parts by weight of filler; wherein, based on the total weight of the polycarbonate composite material , the weight content of the iron element is 0.1-50ppm, and the weight content of the copper element is 0.01ppm-20ppm. Surprisingly, it is found that the present invention controls the content of iron element in the composite material in the range of 0.1-50ppm and the content of copper element in the range of 0.01-20ppm by adding a trace amount of iron element and copper element in the composite material, which not only can avoid The pretreatment of the filler powder can also stabilize the alkaline ions in the system, and reduce the color darkening and performance damage caused by the introduction of screws or other metals, so that the prepared polycarbonate composites have significantly improved impact strength , bending and molding toughness, and can also take into account the rigidity brought by fillers, and has excellent molding stability and color stability.

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 Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/04C08K9/00C08K3/34C08K3/16C08K3/28C08K3/08
CPCC08L69/00C08K3/34C08K3/346C08K2003/085C08K2003/0856C08K2003/3045C08K2003/3072C08K2201/006C08L55/02C08K9/04C08K3/16
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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