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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 low heat resistance grade, rigidity of polyphenylene ether, loss of heat resistance, low flame retardant effect, etc. The effect of stable quality, easy processing and high production efficiency

Inactive Publication Date: 2009-05-06
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 0.35 dL / g), 30% by weight of high impact polystyrene resin (HIPS), 9% by weight of elastomer SBS, 5% by weight of brominated epoxy resin Resin flame retardant and 1% by weight of antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate were stirred in a high-speed mixer for 5 minutes, and after mixing uniformly, Put into twin-screw extruder for extrusion and granulation. The length-diameter ratio of the twin-screw extrusion equipment is 35, the control feeding speed is 8rpm / min, the screw speed is 200rpm / min, and the temperature of each zone of the screw barrel is 200°C for the first stage, 245°C for the second stage, and 245°C for the third stage. ℃, the fourth section is 245℃, the fifth section is 245℃, the sixth section is 245℃, the seventh section is 245℃, the eighth section is 245℃, the ninth section is 245℃, and the die temperature is 245℃.

Embodiment 2

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

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 100nm 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 (with maleic anhydride grafting rate of 0.3%) and 0.2% by weight of Antioxidant tris(2,4-di-tert-butylphenyl) phosphite was stirred in a high-speed mixer for 3 minutes, and after mixing uniformly, it was put into a twin-screw extruder for extrusion and granulation. The length-diameter ratio of the twin-screw extrusion equipment is 32, the control feeding speed is 5rpm / min, the screw speed is 300rpm / min, and the temperature of each zone of the screw barrel is 220°C for the first stage, 240°C for the second stage, and 240°C for the third stage. ℃, the fourth section is 245℃, the fifth section is 245℃, the sixth section is 245℃, the seventh sectio...

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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 present invention relates to a polyphenylene ether composition, in particular to a flame retardant polyphenylene ether composition, and the present invention 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 operating temperature range, low water absorption, excellent mechanical properties and electrical properties, etc.; however, its high melt viscosity and poor processability make it difficult to use injection molding. Restricted. Therefore, polystyrene (PS), which is compatible with it in a wide composition range, is often used to improve its processing fluidity. The resulting PPE / PS polymer alloy has excellent low moisture absorption, easy processing and good dimensional stability, which can be used for Preparation of special pumps, water measuring equipment, parts of military equipment, components of va...

Claims

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Application Information

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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
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