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A high-rigidity polycarbonate composition with infrared transmission and its preparation method

A polycarbonate and infrared-transmitting technology, applied in the field of polymer materials, can solve problems such as difficult dispersion, achieve excellent toughness and improve rigidity

Active Publication Date: 2021-04-27
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to disperse zinc sulfide in polycarbonate melt

Method used

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  • A high-rigidity polycarbonate composition with infrared transmission and its preparation method

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preparation example Construction

[0029] A preparation method of an infrared-transmitting high-rigidity polycarbonate composition adopts the following steps:

[0030] (1) Disperse deionized water and zinc sulfide according to the composition of 8:2 with a stirrer at a speed of 200 rpm and a dispersion time of 5 minutes to obtain a zinc sulfide dispersion;

[0031] (2) Silicon-containing PC resin, antioxidant, lubricant and toner are added to the mixing mixer for mixing, fed from the main feeding port of the extruder, and the zinc sulfide dispersion is used from the side feeding port of the extruder Liquid pump feeding, glass fiber feeding from the side feeding port, blending and granulation, extrusion temperature 260-280 ℃, rotation speed 450-550rpm, pressure 1.8-2.2MPa, to obtain infrared transparent high rigidity carbonate combination.

[0032] The following are more detailed implementation examples, through which the technical solutions of the present invention and the technical effects that can be obtaine...

Embodiment 1

[0043] A kind of high-rigidity polycarbonate of infrared transmission and preparation method thereof, this method comprises the following steps:

[0044] (1) Weigh each component by weight: silicon-containing PC resin: 81 parts, glass fiber: 15 parts, zinc sulfide dispersion: 6 parts, antioxidant: 0.1-1, lubricant: 0.1-1, Toner 0.05;

[0045] (2) Disperse deionized water and zinc sulfide with a mass fraction of 8:2 with a stirrer at a speed of 200rpm and a dispersion time of 5min to make a zinc sulfide dispersion (2) PC resin and antioxidant are added and mixed Mix in the mixer, feed from the main feeding port of the extruder, feed the zinc sulfide dispersion from the side feeding port of the extruder with a liquid pump, and feed the glass fiber from the side feeding port for blending and granulation , to obtain the infrared-transmitting high-rigidity polycarbonate.

Embodiment 2

[0047] A kind of high-rigidity polycarbonate of infrared transmission and preparation method thereof, this method comprises the following steps:

[0048] (1) Weigh each component by weight: silicon-containing PC resin: 90 parts, glass fiber: 8 parts, zinc sulfide dispersion: 2 parts, antioxidant: 0.1-1, lubricant: 0.1-1, Toner 0.05;

[0049] (2) Disperse deionized water and zinc sulfide with a mass fraction of 8:2 with a stirrer at a speed of 200rpm and a dispersion time of 5min to make a zinc sulfide dispersion (2) PC resin and antioxidant are added and mixed Mix in the mixer, feed from the main feeding port of the extruder, feed the zinc sulfide dispersion from the side feeding port of the extruder with a liquid pump, and feed the glass fiber from the side feeding port for blending and granulation , to obtain the infrared-transmitting high-rigidity polycarbonate.

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Abstract

The invention relates to an infrared-transmitting high-rigidity polycarbonate composition and a preparation method thereof. It is prepared by using the following components and raw materials with weight parts content: silicon-containing PC resin: 81-95, glass fiber: 5-15, vulcanized Zinc dispersion: 2~6, antioxidant: 0.1~1, lubricant: 0.1~1, toner: 0.01~0.1, disperse deionized water and zinc sulfide according to the composition of 8:2, and disperse with a stirrer to obtain dispersion Liquid, silicon-containing PC resin, antioxidant, lubricant, and toner are added to the mixing mixer for mixing, fed from the main feeding port of the extruder, and the zinc sulfide dispersion is fed from the side feeding port of the extruder with liquid Pump feeding and glass fiber feeding from the side feeding port for blending and granulation to obtain an infrared-transmitting high-rigidity carbonate composition. In the present invention, zinc sulfide is used to improve the infrared transmission performance of silicon-containing PC, and zinc sulfide dispersion liquid is added to obtain excellent dispersion of zinc sulfide. Silicon-containing PC and glass fiber are used to obtain a balance of toughness and rigidity, and obtain infrared transmission. Highly rigid polycarbonate composition.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an infrared-transmitting high-rigidity polycarbonate composition and a preparation method thereof. Background technique [0002] Infrared transmissive materials are widely used in infrared imaging and guidance technology because of their good infrared transparency and wide transmission band, such as lenses, prisms, windows, filters and other materials. Plastic is an amorphous polymer. Some plastics have good transmittance in the infrared or far infrared band, so they can be used to prepare infrared windows, lenses, etc. current plastic [0003] With its unique characteristics of high light transmittance, high impact resistance, dimensional stability and easy processing and molding, polycarbonate occupies an extremely important position in the optical field, and has been widely used in infrared alarm, infrared monitoring and sensing, etc. Civilian or police fields. However, wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L83/10C08K7/14C08K3/30C08J3/205
Inventor 柏莲桂李强辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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