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Flame retardant polyphenylene oxide composition and preparation method thereof

A technology of polyphenylene ether and composition, applied in the field of flame retardant polyphenylene ether composition, can solve the problems of rigidity of polyphenylene ether, loss of heat resistance, low heat resistance grade, large amount of phosphate ester flame retardant, etc. , to achieve the effect of easy processing, stable product quality and good mechanical properties

Inactive Publication Date: 2011-04-27
CHINA NAT BLUESTAR (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the composition has good weather resistance, heat resistance, compression deformation resistance and good environmental protection performance, the amount of phosphate ester flame retardant used in it is relatively large, which makes the flame retardant very easy to precipitate from the surface of the product, resulting in Sticky surface, easy to stick dust
This shows that although phosphate ester flame retardants can make the system obtain better flame retardant performance, phosphate ester flame retardants often have a plasticizing effect on the system, and the flame retardant effect is low and the dosage is large, which is easy to damage the polyphenylene ether itself. Rigidity and heat resistance cause great loss, so the flame retardant modified polyphenylene ether produced by this type of flame retardant has low mechanical properties and low heat resistance level

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 55% by weight of polyphenylene ether resin (intrinsic viscosity of 0.35dL / g), 30% by weight of high-impact polystyrene resin (HIPS), 9% by weight of elastomer SBS, 5% by weight of brominated epoxy Resin flame retardant and the antioxidant beta-(3,5-di-tert-butyl-4-hydroxyphenyl) stearyl propionate of 1% by weight were stirred in a high-speed mixer for 5 minutes, after mixing evenly, Put into a twin-screw extruder to extrude and granulate. The aspect ratio of the twin-screw extrusion equipment is 35, the feeding speed is controlled at 8rpm / min, the screw speed is 200rpm / min, and the temperature of each partition of the screw barrel is 200°C in the first section, 245°C in the second section, and 245°C in the third section. ℃, 245°C in the fourth section, 245°C in the fifth section, 245°C in the sixth section, 245°C in the seventh section, 245°C in the eighth section, 245°C in the ninth section, the die head temperature is 245°C, and the strands are watered and pelletized....

Embodiment 2

[0035]55% by weight of polyphenylene ether resin (intrinsic viscosity of 0.35dL / g), 27% by weight of high-impact polystyrene resin (HIPS), 9% by weight of elastomer SBS, 5% by weight of brominated epoxy Resin flame retardant, 3.3% by weight of compatibilizer maleic anhydride grafted polyethylene-octene elastomer POE-g-MAH (maleic anhydride graft rate 0.5%) and 0.7% by weight of antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl)stearyl propionate was stirred in a high-speed mixer for 5 minutes, and after mixing evenly, it was put into a twin-screw extruder for extrusion and granulation. The aspect ratio of the twin-screw extrusion equipment is 35, the feeding speed is controlled at 8rpm / min, the screw speed is 200rpm / min, and the temperature of each partition of the screw barrel is 200°C in the first section, 245°C in the second section, and 245°C in the third section. ℃, 245°C in the fourth section, 245°C in the fifth section, 245°C in the sixth section, 245°C in the seventh se...

Embodiment 3

[0037] 60% by weight of polyphenylene ether resin (intrinsic viscosity is 0.45dL / g), 20% by weight of high-impact polystyrene resin, 10% by weight of elastomer 100 nanometer ultrafine powder SBS, 7% by weight of bromine epoxy resin flame retardant, 2.8% by weight of compatibilizer maleic anhydride grafted polyethylene-octene elastomer POE-g-MAH (maleic anhydride graft rate 0.3%) and 0.2% by weight of The antioxidant tris(2,4-di-tert-butylphenyl) phosphite was stirred in a high-speed mixer for 3 minutes, and after mixing evenly, it was put into a twin-screw extruder to extrude and granulate. The aspect ratio of the twin-screw extrusion equipment is 32, the feeding speed is controlled at 5rpm / min, the screw speed is 300rpm / min, and the temperature of each partition of the screw barrel is 220°C in the first section, 240°C in the second section, and 240°C in the third section. ℃, 245°C in the fourth section, 245°C in the fifth section, 245°C in the sixth section, 260°C in the seve...

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Abstract

The invention discloses a fire retardant polyphenylene oxide composition, which comprises the following components in weight percentage: 50 to 60 percent of polyphenylene oxide resin, 20 to 30 percent of high impact polystyrene resin, 8 to 10 percent of elastomer, 1 to 13 percent of fire retarding agent, 0 to 3.3 percent of compatilizer and 0.2 to 1 percent of antioxidant. The fire retardant polyphenylene oxide composition has the advantages of fire resistance, weather resistance, good mechanical performance, good fluidity, easy machine shaping and the like, and is applied to office automatization and a magnetic tape transfer piece, particularly the fields of vehicle external decoration such as vehicle front plates, seat bottom plates and bumpers and vehicle internal decoration such as ventilators, seat back rests and brackets. The method for preparing the fire retardant polyphenylene oxide composition adopts double screw extrusion processing equipment and has the advantages of simple and continuous flow, high production efficiency and stable quality of the prepared product.

Description

technical field [0001] The invention relates to a polyphenylene ether composition, in particular to a flame-retardant polyphenylene ether composition, and also relates to a preparation method of the polyphenylene ether composition. Background technique [0002] Polyphenylene ether resin (PPE) has excellent comprehensive properties, such as wide temperature range, low water absorption, excellent mechanical and electrical properties, etc.; but its high melt viscosity and poor processability make it difficult to form by injection. Restricted. Therefore, polystyrene (PS) that is compatible with it in a wide composition range is often used to improve its processing fluidity. The formed PPE / PS polymer alloy has excellent low moisture absorption, easy processing and good dimensional stability. It can be used in Preparation of special pumps, water measuring equipment, parts of military equipment, components of various household appliances, automobiles, ships and military vehicles. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/12C08L63/00C08K5/134C08K5/526C08K5/38C08K5/25B29B9/12B29C47/92C08L25/08B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/40B29C2948/9259B29C2948/92828B29C2948/92866B29C2948/92885B29C2948/92895
Inventor 姜立忠杨军忠邝清林李瑞亢胡衍平
Owner CHINA NAT BLUESTAR (GRP) CO LTD