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Flame-retarded ASA (Acrylic ester-Styrene-Acrylonitrile) modified resin and preparation method thereof

A modified resin, acrylonitrile resin technology, applied in the field of flame retardant resin, can solve the problems of poor processing fluidity, thermal stability, poor weather resistance, affecting the feeding of the metering system, etc., to achieve good weather resistance of the flame retardant ASA modified resin , the effect of high mechanical strength and broad application prospects

Active Publication Date: 2013-11-20
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of ASA resin is: the flame retardant level can only reach UL94HB, which is a flammable material
Chinese patent CN101765635A discloses brominated epoxy as a flame retardant ASA modified resin, but the processing fluidity of the flame retardant ASA modified resin of this patent is poor, and it is limited in forming thin-walled parts and large-sized parts; and The softening point of brominated epoxy is about 90°C, and it is easy to agglomerate during the blending and extrusion process, which affects the feeding of the metering system and is inconvenient to prepare
Chinese patent CN 101397391A discloses tetrabromobisphenol A flame-retardant ASA modified resin, uses tetrabromobisphenol A as a flame retardant, and acrylonitrile-butadiene-styrene ABS high rubber powder copolymer to toughen ASA, resulting in ASA modified resin has poor thermal stability and weather resistance

Method used

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  • Flame-retarded ASA (Acrylic ester-Styrene-Acrylonitrile) modified resin and preparation method thereof
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  • Flame-retarded ASA (Acrylic ester-Styrene-Acrylonitrile) modified resin and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0043] Add each component into the high-speed mixer according to the ratio in Table 1 to mix evenly, and then send the above-mentioned mixture into the twin-screw extruder through a precision metering feeder for mixing, extrusion, stranding, cooling, and cutting. made of grains. The length-to-diameter ratio of the twin-screw extruder is 40:1, the temperature of the screw barrel in the 1st to 4th zones is 180 to 190°C, the temperature in the 5th to 9th zones is 200 to 210°C, the temperature of the head is 200°C, and the screw speed is 400~450rpm.

[0044] Raw material proportioning unit in the embodiment 1 of table 1: kilogram

[0045]

Embodiment 2

[0047] Add each component into the high-speed mixer according to the ratio in Table 2 to mix evenly, and then send the above-mentioned mixture into the twin-screw extruder through a precision metering feeder for mixing, extrusion, stranding, cooling, and cutting. made of grains. The length-to-diameter ratio of the twin-screw extruder is 40:1, the temperature of the screw barrel in the 1-4 zone is 180-190°C, the temperature in the 5-9 zone is 200-210°C, the temperature of the head is 200°C, and the screw speed is 400-450rpm.

[0048] Table 2: each raw material proportioning unit in embodiment 2: kilogram

[0049]

Embodiment 3

[0051] Add the components into the high-speed mixer according to the ratio in Table 3 and mix them uniformly, then send the above-mentioned mixture into the twin-screw extruder through the precision metering feeder, and carry out mixing, extrusion, stranding, cooling, and cutting. made of grains. The length-to-diameter ratio of the twin-screw extruder is 40:1, the temperature of the screw barrel in the 1st-4th zone is 180-190°C, the temperature in the 5th-9th zone is 200-210°C, the temperature of the head is 200°C, and the screw speed is 400-450rpm.

[0052] Table 3: each raw material ratio unit in embodiment 3: kilogram

[0053]

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Abstract

The invention relates to flame-retarded resin, in particular to flame-retarded ASA (Acrylic ester-Styrene-Acrylonitrile) modified resin and a preparation method thereof. The flame-retarded ASA modified material in the prior art has the defects of low flame-retarded level, flammability and unsafe use in outdoor equipment, electric appliances, and the like. The flame-retarded ASA modified material comprises the following substances in weight ratio: 20-55 parts of acrylic ester-styrene-acrylonitrile-ternary graft copolymer, 25-55 parts of styrene-acrylonitrile resin, 12-20 parts of bromine flame retardant agents, 3-7 parts of stibium flame retardant agents, 0.1-1.5 parts of drip-proof additive, 0.2-1% of antioxidant, 0.3-1% of ultraviolet absorbent and 0.2-1% of processing agent. The preparation method comprises the following steps of: accurately weighing each component and placing into a high speed mixer for uniform mixing; introducing into a twin screw extruder with a long diameter; mixing and milling; extruding; pulling into strips; cooling; and cutting into granules and packaging. The invention has the advantages of satisfying the flame retarded property and having more balanceable thermal stability, processing liquidity and impact strength; and the preparation method is simple and easy for operation.

Description

technical field [0001] The invention relates to a flame-retardant resin, in particular to a flame-retardant ASA modified material and a preparation method thereof. Background technique [0002] ASA resin is a ternary graft copolymer composed of acrylate-styrene-acrylonitrile, invented by BASF company in Germany and realized industrialization in 1968. [0003] ASA resin uses polyacrylate without double bond structure to replace polybutadiene rubber in ABS. Only light waves with a wavelength below 300nm can age ASA resin; the weather resistance of ASA resin is about 10 times higher than that of ABS; at the same time, ASA resin has High impact resistance, high mechanical strength, good heat resistance, chemical resistance, so it is widely used in building materials, automobiles, electronic appliances, outdoor equipment and other fields. [0004] The disadvantage of ASA resin is: the flame retardant level can only reach UL94HB, which is a flammable material. It is very unsafe ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08L25/12C08K13/02C08K3/22C08K3/24C08K5/3492
Inventor 胡付余罗伟东吴晓辉
Owner SHANGHAI KINGFA SCI & TECH
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