PC composite material with matte effect and preparation method thereof

A composite material and matte powder technology, which is applied in the field of PC resin modification, can solve the problems of performance deterioration, high energy consumption, uneven gloss distribution, etc., and achieve the effects of lower processing temperature, simple preparation process, and improved matteness

Pending Publication Date: 2022-05-06
大河宝利材料科技(苏州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the defects in the above-mentioned prior art, the present invention provides a matte PC composite material and a preparation method thereof, so as to solve the problems of high energy consumption, serious performance deterioration and gloss distribution problems in the preparation of matte PC composite materials in the prior art. uneven problem

Method used

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  • PC composite material with matte effect and preparation method thereof
  • PC composite material with matte effect and preparation method thereof

Examples

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preparation example Construction

[0032] The preparation method of the PC composite material with matte effect, comprises the following steps:

[0033] The PC resin, the matte powder, and the antioxidant are weighed according to the formula, and premixed in a high-speed mixer for 5-10 minutes to obtain a premix;

[0034] The premixed material is added to a twin-screw extruder for extrusion and granulation to obtain the PC composite material.

[0035] Further, the temperature of the twin-screw extruder is set as follows: Zone 1 220-230°C, Zone 2 230-240°C, Zone 3 230-240°C, Zone 4 230-240°C, Zone 5 230-240°C, The sixth zone is 230-240°C, the seventh zone is 230-240°C, the eighth zone is 230-240°C, the ninth zone is 230-240°C, the tenth zone is 230-240°C, and the machine head is 240-250°C.

[0036] Further, the rotational speed of the screw is 300-400r / min, and the screw aspect ratio of the twin-screw extruder is 40-48.

[0037] Further, in the later stage of sample preparation, the temperature of the injectio...

Embodiment 1-6 and comparative example 1-2

[0039] The formulations (unit: %) of the PC composite materials in Examples 1-6 and Comparative Examples 1-2 are shown in the table below. Prepare materials according to the components and contents of each embodiment and comparative example in Table 1; fully stir and premix the prepared materials in a high-speed mixer, and in a preferred embodiment, premix for 8 minutes; finally add the premix The PC composite material can be obtained by extruding and granulating with a twin-screw extruder. The preparation process of the PC composite material of the invention is simple, and the existing equipment can be used for mass production.

[0040] In the above example, the temperature of the twin-screw extruder is set as follows: Zone 1 220°C, Zone 2 235°C, Zone 3 235°C, Zone 4 230-240°C, Zone 5 235°C, Zone 6 235°C, The seventh zone is 235°C, the eighth zone is 235°C, the ninth zone is 235°C, the tenth zone is 235°C, and the machine head is 245°C. The screw speed is 360r / min, and the ...

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Abstract

The invention discloses a PC (polycarbonate) composite material with a matte effect and a preparation method thereof, the PC composite material with the matte effect comprises PC resin, matte powder and an antioxidant, and the mass percentage of each component is as follows: 94.5-97.8% of the PC resin, 2-5% of the matte powder and 0.2-0.5% of the antioxidant; the matte powder is a silicon dioxide powder material, and the particle size of the matte powder is 1.5 +/-0.1 mu m. The preparation method comprises the following steps: premixing the raw materials in a high-speed mixer for 5-10 minutes, and then extruding and granulating the premix through a double-screw extruder to obtain the PC composite material. When the PC composite material with the matte effect is prepared, the temperature of each section of the double-screw extruder is 20-30 DEG C lower than that of a normal process, and the PC composite material with the matte effect is obtained. Meanwhile, the temperature is 20 DEG C lower than the normal injection molding temperature during sample injection molding, so that the PC composite material with the matte effect is simple in preparation process and low in energy consumption.

Description

technical field [0001] The invention relates to the field of PC resin modification, in particular to a PC composite material with a matte effect and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is an important variety of general engineering plastics, with excellent comprehensive properties, high impact strength and good transparency, and can maintain high mechanical strength, good electrical properties, High dimensional stability and good formability. In recent years, the polycarbonate industry has developed rapidly. On the one hand, the production capacity has increased rapidly. On the other hand, with the advancement of alloying technology and molding processing methods, the application fields have also continued to expand. At present, it has been used in electrical, mechanical, optical, medical and other industrial sectors have been widely used. Due to the high gloss characteristics of polycarbonate materials, its application in automot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K13/02C08K5/134C08K5/526C08K3/36
CPCC08K13/02C08K5/1345C08K5/526C08K3/36C08K2201/011C08L69/00
Inventor 杨俊罗煜陈欢郑江华
Owner 大河宝利材料科技(苏州)有限公司
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