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Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products

A technology of twin-screw extrusion and polyphenylene ether, which is applied in the field of twin-screw extruders, can solve problems such as failure to meet customer needs, affect material product performance, and low product performance, and achieve reasonable structure, flow performance and processing performance. Consistent, high-performance results

Active Publication Date: 2010-10-27
NANTONG XINGCHEN SYNTHETIC MATERIAL +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The melting temperature of various materials is different. For example, the melting temperature of PPO raw powder is above 300°C, while the melting temperature of flame retardant is only 40°C or even lower. If the melting temperature of materials is too high, decomposition and Vaporization seriously affects the composition of materials in the product and the performance of the product; the melting temperature is too low, some materials do not melt, and the dispersion of various materials in the product is not good, resulting in low performance of the product, which cannot meet the needs of customers.

Method used

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  • Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products
  • Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products
  • Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products

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Embodiment Construction

[0016] A twin-screw extrusion method suitable for the extrusion of modified polyphenylene ether alloy products. The screw is divided into three sections A, B, and C along the material conveying direction in the form of 1, 2, and 3 shearing and kneading block combinations. The interior of the twin-screw extruder is divided into A zone, B zone and C zone; A zone is the zone where various materials are initially melted; B zone is the zone where various materials are melted again to reach a semi-molten state, and preliminary kneading is carried out at the same time area; area C is the area where the flame retardant and various materials are kneaded and mixed, and the various materials are evenly distributed; the front of area A is the feeding area, and the rear of area C is the vacuum area. Between areas B and between areas B and C are pressure relief, delivery, and pressurization areas.

[0017] The shearing and kneading block combinations of the screw A section are 45° kneading ...

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Abstract

The invention discloses a double-screw extruder being suitable for extruding modified polyphenylene oxide alloy products. The screw is divided into A, B and C three-section combination form of cutting and kneading blocks in sequence along material transmission direction; the double screw extruder is correspondingly divided into area A, area B and area C, wherein, the area A is the area for initially melting various materials; the area B is the area for melting various materials once again to achieve semi-melting state and for initially kneading area simultaneously; the area C is the area for composition kneading and mixing of fire retardant and various materials, and for evenly distributing various materials simultaneously; and the front part of the area A is a blanking area, the rear part of the area C is a vacuum area, the area between the area A and the area B, and the area between the area B and the area C are a decompressing area, a transmitting area and a boosting area, thus various materials of the invention can be sufficiently melted and mixed.

Description

Technical field: [0001] The invention relates to a twin-screw extruder. Background technique: [0002] Modified polyphenylene ether has excellent mechanical properties, electrical resistance, heat resistance, good dimensional stability and weather resistance. These excellent properties make the modified polyphenylene ether products widely used in many special industries. Such as high-voltage electrical industry, household appliances, office supplies, auto parts, precision instruments, textile equipment, military industry, civil or special water supply industry. [0003] There are various components in modified polyphenylene ether products, such as polyphenylene ether raw powder, polystyrene and its derivatives, tougheners, antioxidants, flame retardants and other additives, most of the current products It adopts twin-screw extrusion method to produce modified polyphenylene ether products. The uniform mixing of various raw and auxiliary materials in the product is the key ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/00B29C47/36B29K71/00B29C48/57B29C48/40
CPCB29C47/6056B29C48/57B29C48/40
Inventor 李健原纯杰舒长光袁文单玉峰李海涛肖春燕
Owner NANTONG XINGCHEN SYNTHETIC MATERIAL
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