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Halogen-free flame-retardant heat-resistant polycarbonate alloy easy to process

A polycarbonate, high heat-resistant technology, applied in the field of high heat-resistant and easy-to-process polycarbonate alloys, can solve the problems of increasing raw material components, unfavorable production operations, etc., achieve good flame retardant effect, high heat resistance, improve The effect of difficult feeding conditions

Active Publication Date: 2015-04-01
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phosphorus-based flame retardants used in this invention are monophosphates, diphosphates, and oligophosphates, and the raw material components are increased, which is not conducive to actual production operations.
[0005] There is no report about the use of high polymerization degree phosphate flame retardants in the preparation of polycarbonate alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Weigh each raw material according to the following percentages by weight: bisphenol A type polycarbonate is 50%, styrene-acrylonitrile-butadiene resin is 25%, bisphenol A-bis(diphenyl phosphate) oligomer ( Polymerization degree n=30) is 20%, methyl methacrylate-styrene-butadiene graft copolymer is 3.5%, antioxidant 245 is 0.2%, antioxidant 168 is 0.3%, anti-dripping agent 1% for the A3800.

[0055] After the weighed raw materials are mixed evenly, the blended material is put into a twin-screw extruder. The twin-screw extruder includes ten temperature zones. The temperature in zone 3-4 is 230°C, the temperature in zone 5-6 is 240°C, the temperature in zone 7-8 is 250°C, and the temperature in zone 9-10 is 250°C. The speed of the twin-screw extruder is 450 rpm. After the blended material is extruded by the twin-screw extruder, the extruded strands are water-cooled and cut into pellets. The obtained samples are dried at 85°C and injected into strips. That is, the product...

Embodiment 2

[0057] Weigh each raw material according to the following weight percentages: polycarbonate PC-300-15 is 85%, styrene-acrylonitrile resin is 5%, bisphenol A-bis(diphenyl phosphate) oligomer (polymerization degree n =40) is 5%, methyl methacrylate-styrene-butadiene graft copolymer is 4%, antioxidant trioctyl phosphate is 0.2%, and anti-dripping agent A3800 is 0.8%.

[0058] After the weighed raw materials are mixed evenly, the blended material is put into a twin-screw extruder. The twin-screw extruder includes ten temperature zones. The temperature in zone 3-4 is 230°C, the temperature in zone 5-6 is 240°C, the temperature in zone 7-8 is 250°C, and the temperature in zone 9-10 is 250°C. The speed of the twin-screw extruder is 450 rpm. After the blended material is extruded by the twin-screw extruder, the extruded strands are water-cooled and cut into pellets. The obtained samples are dried at 85°C and injected into strips. That is, the product is obtained.

Embodiment 3

[0060] Weigh each raw material according to the following weight percentages: polyethylene carbonate is 60%, styrene-acrylonitrile-butadiene resin is 20%, bisphenol S-bis(5,5-dimethyl-1,3 -dioxacaprolactophosphate) (polymerization degree n=50) is 14.5%, butyl acrylate-styrene copolymer is 5%, antioxidant 245 is 0.1%, and anti-dripping agent A3800 is 0.4%.

[0061] After the weighed raw materials are mixed evenly, the blended material is put into a twin-screw extruder. The twin-screw extruder includes ten temperature zones. The temperature in zone 3-4 is 230°C, the temperature in zone 5-6 is 240°C, the temperature in zone 7-8 is 250°C, and the temperature in zone 9-10 is 250°C. The speed of the twin-screw extruder is 450 rpm. After the blended material is extruded by the twin-screw extruder, the extruded strands are water-cooled and cut into pellets. The obtained samples are dried at 85°C and injected into strips. That is, the product is obtained.

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Abstract

The invention discloses a halogen-free flame-retardant heat-resistance polycarbonate alloy easy to process, which comprises the following materials in percent by weight: 50%-85% of polycarbonate, 5%-25% of styrene resin, 5%-20% high-polymerization-degree phosphate flame retardant, 1%-5% of acrylate graft copolymer, 0.1%-0.5% of antioxygen and 0.1%-1% of drip-proof agent. According to the halogen-free flame-retardant heat-resistance polycarbonate alloy easy to process, the flame retardant requirement of the alloy is met by using the high-polymerization-degree phosphate flame retardant, a good flame retardant effect is achieved, and the obtained alloy has a high heat-resistance property, so that the difficulty of feeding in the production process is improved effectively.

Description

technical field [0001] The invention relates to the technical field of polycarbonate alloys, in particular to a halogen-free flame-retardant polycarbonate alloy with high heat resistance and easy processing. Background technique [0002] Polycarbonate (PC) plastic has the advantages of high toughness, low temperature impact, dimensional stability, high heat resistance, transparency, etc., but polycarbonate has poor fluidity and is prone to stress cracking. At present, acrylonitrile-butadiene-styrene resin (ABS) is commonly used to blend with it to obtain PC / ABS alloy with high fluidity, stress crack resistance and low cost, and PC / ABS with flame retardancy requirements in the alloy accounts for a large proportion. big portions. Halogen compounds are usually added to provide flame retardancy, and the halogen-containing flame-retardant PC / ABS composition has excellent performance, but because the flame-retardant resin containing halogen compounds will release a lot of smoke a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08L85/02
Inventor 文睿杨春华罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS