Polyphenylene ether resin composition and production method thereof

A technology of polyphenylene ether resin and polystyrene resin, which is applied in the field of polyphenylene ether resin composition, can solve the problems of ineffective effect and achieve small color change, which is beneficial to repeated use and improves the effect of color change

Active Publication Date: 2011-12-14
NANTONG XINGCHEN SYNTHETIC MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S. Patents US4405739, US4483953, and US4588764 all proposed the use of phosphites of different structures to improve the color change of polyphenylene ether resins and their compositions during processing, but the above-mentioned patents all have their effects when the processing temperature is high Not so bad

Method used

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  • Polyphenylene ether resin composition and production method thereof
  • Polyphenylene ether resin composition and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 70 parts of polyphenylene ether resin (PPE) and 0.5 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) are mixed and added from the first weight loss feeder , 30 parts of high-impact polystyrene resin (HIPS) is added from the second loss-in-weight feeder, plasticized, melted, extruded, drawn, cooled, pelletized, extruded and injected through a twin-screw extruder The temperature is between 250-320°C. The pellets were dried at 110°C for 2 h in a blast drying oven, and then test specimens were prepared by injection molding machine. At the same time, part of the pellets were taken according to the previous steps to back-extrude, granulate, and dry through the twin-screws, and the test specimens were also prepared by the injection molding machine.

Embodiment 2

[0028] 70 parts of polyphenylene ether resin (PPE), 6 parts of hydrogenated styrene-butadiene-styrene (SEBS), 0.5 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxid After high mixing, DOPO is added from the first loss-in-weight feeder, and 30 parts of high-impact polystyrene resin (HIPS) is added from the second loss-in-weight feeder, and then the twin-screw extruder is plasticized, Melting, extrusion, drawing, cooling, pelletizing, extrusion and injection molding temperature are between 250-320 ℃. The pellets were dried at 110°C for 2 h in a blast drying oven, and then test specimens were prepared by injection molding machine. At the same time, part of the pellets were taken according to the previous steps to back-extrude, granulate, and dry through the twin-screws, and the test specimens were also prepared by the injection molding machine.

Embodiment 3

[0031] Example 3: 70 parts of polyphenylene ether resin (PPE), 8 parts of hydrogenated styrene-butadiene-styrene (SEBS), 0.5 part of 9,10-dihydro-9-oxa-10-phosphaphenanthrene -10-Oxide (DOPO) is added from the first loss-in-weight feeder after high-mixing, 30 parts of high-impact polystyrene resin (HIPS) is added from the second loss-in-weight feeder, and 8 parts of liquid flame retardant The agent is added from the liquid feed port through a liquid pump, and then the twin-screw extruder is plasticized, melted, extruded, drawn, cooled, and pelletized. The extrusion and injection molding temperatures are between 250-320°C. The pellets were dried at 110°C for 2 h in a blast drying oven, and then test specimens were prepared by injection molding machine. At the same time, part of the pellets were taken according to the previous steps to back-extrude, granulate, and dry through the twin-screws, and the test specimens were also prepared by the injection molding machine.

[0032] T...

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Abstract

The invention discloses a polyphenylene ether resin composition and a production method thereof. The polyphenylene ether resin composition is composed of polyphenylene ether resin, polystyrene resin, elastic body, flame retardant and anti-color change agent. The production method is to mix the components and extrude through twin-screws, and the temperature of extrusion and injection molding is between 250-320°C. The present invention obviously improves the color change of the polyphenylene ether resin composition during processing by adding an anti-color change additive into the polyphenylene ether resin composition, and the color change of the secondary back-extruded material is small, which is beneficial to the product quality. reuse.

Description

Technical field: [0001] The invention relates to a polyphenylene ether resin composition and a production method thereof. Background technique: [0002] Polyphenylene ether is one of the five general-purpose engineering plastics in the world. It has excellent mechanical properties, electrical resistance, heat resistance, good dimensional stability and weather resistance. It is widely used in high-voltage electrical appliances, household appliances, office supplies, and auto parts. and civil industries. Due to the high melt viscosity, low toughness and difficult processing of pure polyphenylene ether resin, it is necessary to add polystyrene resin, elastomer, flame retardant, etc. to improve the fluidity, toughness and flame retardancy of polyphenylene ether resin to achieve good performance. purpose of use. However, the color of modified polyphenylene ether products is reddish and dark with the increase of temperature during processing, which poses a challenge to non-black...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/12C08L25/06C08K5/5313B29C47/92B29C45/78B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/40B29C2948/92895
Inventor 袁文戴伍国李健隋轶巍肖春燕
Owner NANTONG XINGCHEN SYNTHETIC MATERIAL
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