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Thermosetting plastic extruding and pelletizing process

An extrusion granulation and thermosetting technology, which is applied in the extrusion granulation process of thermosetting plastics, can solve the problems of irreparable economic loss and system inoperability, and achieve the effects of easy control, improved environmental quality, and convenient operation

Inactive Publication Date: 2003-05-14
上海欧亚合成材料股份有限公司
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AI Technical Summary

Problems solved by technology

[0004] In the processing of thermoplastics and other materials, both single-screw and twin-screw extrusion devices have been used. However, due to the above characteristics of thermosetting plastics, when using a general single-screw or twin-screw as an extrusion device, the material is extruded. It will accumulate in the barrel of the extruder, so that the material will be cross-linked and solidified after being heated, causing the entire system to fail to operate, resulting in irreparable economic losses

Method used

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  • Thermosetting plastic extruding and pelletizing process
  • Thermosetting plastic extruding and pelletizing process
  • Thermosetting plastic extruding and pelletizing process

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Embodiment Construction

[0029] Further illustrate the present invention below in conjunction with embodiment

[0030] refer to figure 1 , The process of the present invention consists of the following processes, heating, feeding, extrusion, granulation, negative pressure suction, cyclone separation of aggregates, cold wind vibration screening, finished product packaging.

[0031] After driving, heat the electric heating mantle first, and then inject the plasticized thermosetting plastic (chopped glass fiber reinforced phenolic molding compound) into the extrusion device 2 from top to bottom through the forced feeding device 1. The forced feeding device 1 can be provided with a screw device 12, and the screw device 12 can rotate with the motor 11 at the upper end of the feed inlet, so that the raw materials can be mixed evenly before being injected into the extrusion device 2. After the raw material enters the extrusion device 2 , it advances helically toward the die 22 along with the screw 21 , and ...

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Abstract

The thermosetting plastic extruding and pelletizing process includes the steps of heating, feeding, extruding, pelletizing, negative pressure sucking, cyclonic separation of aggregate, wind cooling and sieving. The said process has optimized technological parameters and thus continuous production process.

Description

technical field [0001] The invention relates to an extrusion granulation process of thermosetting plastics, in particular to an extrusion granulation process of chopped glass fiber reinforced phenolic molding compound. Background technique [0002] Phenolic molding compound is a typical representative of thermosetting plastics, but the continuous extrusion and granulation process of this material has been a problem for many years in the machinery industry and plastics industry. Even developed countries have only extruded phenolic formaldehyde in the last two years The advent of molding compound particles shows that the extrusion technology of thermosetting plastics in developed countries is not fully mature and is still in the research and experiment stage. In China, it is regarded as a scientific and technological project of the "Seventh Five-Year Plan" and "Eighth Five-Year Plan". Shanghai Plastic Factory and Harbin Insulation Material Factory...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29C47/02
Inventor 朱永茂招锦荣张兴义刘勇
Owner 上海欧亚合成材料股份有限公司
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