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A kind of pc/abs composition with low smoke density and preparation method thereof

A technology of smoke density and composition, which is applied in the field of low smoke density PC/ABS composition and its preparation, can solve the problem that the degree of smoke suppression is not enough to meet the requirements of material safety performance, and achieve the suppression of smoke generation, uniform appearance, Effect of enhancing chemical resistance and low-temperature impact properties

Active Publication Date: 2019-05-24
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent adds nano-hydrotalcites to the preparation of PC / ABS alloy materials. When the material is burned, the structural hydration laminate hydroxyl groups and interlayer ions of the nano-hydrotalcite components can be released in the form of water and carbon dioxide, which plays a role in flame retardancy and suppression. smoke effect, but the degree of smoke suppression by adding nano-hydrotalcite is still not enough to meet people's growing requirements for material safety performance

Method used

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  • A kind of pc/abs composition with low smoke density and preparation method thereof
  • A kind of pc/abs composition with low smoke density and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Take by weight 30 parts of PC-PDMS, 70 parts of ABS, 0.1 part of nano zinc oxide prepared by ultrasonic method, 0.1 part of antioxidant, 0.1 part of lubricant;

[0031] (2) Feed the raw materials from the feeding port, melt and extrude at 200-260°C, the screw extruder speed is 500rpm, the pressure is 3MPa, after melt extrusion, granulation to obtain the product, the diameter of the extruder screw It is 35mm and the aspect ratio is 32.

Embodiment 2

[0033] (1) Take by weight 50 parts of PC-PDMS, 50 parts of ABS, 3 parts of nano zinc oxide prepared by ultrasonic method, 1 part of antioxidant, 0.5 part of lubricant;

[0034] (2) Feed the raw materials from the feeding port, melt and extrude at 200-260°C, the screw extruder speed is 450rpm, the pressure is 3.5MPa, after melt extrusion, granulation to obtain the product, the extruder screw The diameter is 35mm and the aspect ratio is 32.

Embodiment 3

[0036] (1) take by weight 40 parts of PC-PDMS, 60 parts of ABS, 0.7 parts of nano-zinc oxide prepared by ultrasonic method, 0.5 parts of antioxidant, 0.8 parts of lubricant;

[0037] (2) Feed the raw materials from the feeding port, melt and extrude at 200-260°C, the screw extruder speed is 550rpm, the pressure is 2.5MPa, after melt extrusion, granulation to obtain the product, the extruder screw The diameter is 35mm and the aspect ratio is 32.

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Abstract

The invention relates to a PC / ABS composition with low smoke density and a preparation method of the PC / ABS composition. The PC / ABS composition comprises the following components in parts by weight: 30-50 parts by weight of PC-PDMS, 50-70 parts by weight of ABS, 0.1-3 parts by weight of nanometer zinc oxide, 0.1-1 part by weight of an antioxidant, and 0.1-1 part by weight of a lubricant. Compared with the prior art, the PC / ABS composition provided by the invention has the advantages that the PC-PDMS containing organic silicon segmers is used for effectively improving the flame resistant properties of a material, and in the combustion process, Si-C and Si-O bonds of polysiloxane form an inert condensed phase layer, so that the material is prevented from being in contact with oxygen; besides, the layered nanometer zinc oxide can absorb water, and a compact coating layer is formed, so that combustion decomposition products and volatile toxic gas are prevented from escaping, and the effect of efficiently restraining smoke is achieved; and the smoke density of the product namely the PC / ABS composition is far lower than 75, and during combustion, the PC / ABS composition is low in smoke and low in toxicity, so that the PC / ABS composition is harmless to the health of human bodies, and the PC / ABS composition can be used for school buses, high-speed rails, electric equipment, building trade and the like.

Description

technical field [0001] The invention belongs to the field of flame retardant material processing, and in particular relates to a PC / ABS composition with low smoke density and a preparation method thereof. Background technique [0002] When a fire occurs, the combustion process produces a large amount of smoke, low visibility, and the smoke corrodes the environment and endangers human health. According to the survey, 80% of the fires are caused by poisonous gas and smoke that suffocate people on the fire scene. Research and development of low-smoke, low-toxic and environmentally friendly composite Materials are very necessary. PC / ABS (polycarbonate and acrylonitrile-butadiene-styrene copolymer and mixture) alloy material takes into account the advantages of both PC and ABS, has excellent mechanical properties and processing properties, and is widely used in the construction industry, decoration For the safety of the public, it is necessary to research and develop PC / ABS mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L55/02C08L87/00C08L83/04C08K13/02C08K3/22C08K5/134C08K5/526C08K5/103
CPCC08L55/02C08L87/00C08L2201/02C08L2205/03C08L83/04C08K13/02C08K2003/2296C08K5/1345C08K5/526C08K5/103
Inventor 王璐李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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