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Polycarbonate resin compound and preparation method thereof

A technology of polycarbonate resin and polycarbonate, applied in the field of preparation of modified polycarbonate resin, polycarbonate resin compound, and the above-mentioned polycarbonate resin, which can solve the problems of poor flame retardancy and reduce production costs , low toxicity and simple process

Inactive Publication Date: 2009-12-30
CHINA NAT BLUESTAR GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in the patent 200510132991.X, an impact modifier containing polyorganosiloxane, acrylate polymer and styrene polymer was prepared by emulsion polymerization. The disadvantage of this method is poor flame retardancy

Method used

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  • Polycarbonate resin compound and preparation method thereof
  • Polycarbonate resin compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 98 parts by weight of aromatic polycarbonate and 2 parts by weight of dimethyl silicone rubber were sequentially added into a mixer for pre-mixing. The mixing temperature was 20° C., the speed of the mixer was 100 rpm, and the mixing time was 5 minutes.

[0041] Put the pre-mixed material into the twin-screw extruder for extrusion and granulation. During extrusion, the processing temperature of each section of the twin-screw extruder is set to 220°C for the first section, 230°C for the second section, and 250°C for the third section. , The fourth section is 250°C, the fifth section is 250°C, the sixth section is 250°C, the seventh section is 250°C, the eighth section is 250°C, the ninth section is 250°C, the die head temperature is 235°C, and the aspect ratio of the twin-screw is 35 , the screw speed is 260 rpm, the feeder speed is 10 rpm, and the strands are watered and pelletized.

[0042] The performance of the polycarbonate resin composite was tested, and the test res...

Embodiment 2

[0044] 95 parts by weight of aromatic polycarbonate and 5 parts by weight of dimethyl silicone rubber were sequentially added into the mixer for pre-mixing. The mixing temperature was 20° C., the speed of the mixer was 100 rpm, and the mixing time was 5 minutes.

[0045] Put the pre-mixed material into the twin-screw extruder for extrusion and granulation. During extrusion, the processing temperature of each section of the twin-screw extruder is set to 220°C for the first section, 230°C for the second section, and 250°C for the third section. , The fourth section is 250°C, the fifth section is 250°C, the sixth section is 250°C, the seventh section is 250°C, the eighth section is 250°C, the ninth section is 250°C, the die head temperature is 235°C, and the aspect ratio of the twin-screw is 35 , the screw speed is 260 rpm, the feeder speed is 10 rpm, and the strands are watered and pelletized.

[0046] The performance of the polycarbonate resin composite was tested, and the test...

Embodiment 3

[0048] 90 parts by weight of aromatic polycarbonate and 10 parts by weight of fluorosilicone polymer were sequentially added to the mixer for pre-mixing. The mixing temperature was 20°C, the speed of the mixer was 100 rpm, and the mixing time was 5 minutes.

[0049] Put the pre-mixed material into the twin-screw extruder for extrusion and granulation. During extrusion, the processing temperature of each section of the twin-screw extruder is set to 220°C for the first section, 230°C for the second section, and 250°C for the third section. , The fourth section is 250°C, the fifth section is 250°C, the sixth section is 250°C, the seventh section is 250°C, the eighth section is 250°C, the ninth section is 250°C, the die head temperature is 235°C, and the aspect ratio of the twin-screw is 35 , the screw speed is 260 rpm, the feeder speed is 10 rpm, and the strands are watered and pelletized.

[0050] The performance of the polycarbonate resin composite was tested, and the test resu...

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Abstract

The invention discloses a polycarbonate resin compound and a preparation method thereof. The polycarbonate resin compound comprises the following components: 80 to 99.5 portions by weight of polycarbonate resin or polycarbonate resin alloy, and 0.5 to 20 portions by weight of organic silicon rubber. The preparation method comprises the following steps: (1) premixing, namely, adding the polycarbonate resin or the polycarbonate resin alloy and the organic silicon rubber into a mixer, and premixing the materials for 1 to 6 minutes with the rotating speed of 100 to 800 revolutions per minute at the mixing temperature of between 20 and 50 DEG C; and (2) squeezing granulation, namely adding the premixed materials into a double-screw extruder to carry out squeezing granulation, wherein the temperature of each section of the double-screw extruder is between 180 and 300 DEG C during extrusion, the rotating speed of screws is 100 to 500 revolutions per minute, and the rotating speed of a feeder is 10 to 60 revolutions per minute. The polycarbonate resin compound prepared by the method has good liquidity, thermal stability and impact resistance, and belongs to the field of polymer material modification.

Description

technical field [0001] The invention relates to a polycarbonate resin compound, in particular to a modified polycarbonate resin. The invention also relates to a preparation method of the polycarbonate resin, which belongs to the field of high polymer modification. Background technique [0002] Polycarbonate (PC) is a tasteless, odorless, non-toxic thermoplastic engineering plastic, with outstanding impact resistance, creep resistance, high tensile strength, high heat resistance and cold resistance, medium It has excellent electrical properties, excellent shape and color stability, good light transmission, and the transmittance of visible light can reach about 90%. It is the only transparent product among the five major engineering plastics. However, due to the high rigidity of the molecular chain and the large steric hindrance of the bisphenol A PC, it has a high melt viscosity, so it is difficult to process and it is difficult to make large-scale products; it is prone to st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/00C08L55/02C08L67/02C08L83/04C08L83/07C08L83/06C08L83/05
Inventor 邝清林杨军忠姜立忠李瑞亢胡衍平
Owner CHINA NAT BLUESTAR GRP CO LTD
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