A kind of production method of polypropylene composite material

A composite material and production method technology, applied in the field of polypropylene composite material production, can solve the problems of reducing VOC content, difficulty in blanking, low VOC removal efficiency, etc., and achieve the effect of reducing VOC content and expanding the area

Active Publication Date: 2020-12-29
安徽纽麦特新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a polypropylene composite material production method and its use method in view of the problems in the prior art, such as the difficulty in unloading the polypropylene mixture and the low VOC removal efficiency in the polypropylene composite material
The mixture is fed through the inclined feeding screw to solve the problem of difficult feeding; the mixture is subjected to two-stage vacuum VOC removal under different temperature environments, which effectively reduces the VOC content in the polypropylene composite material

Method used

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  • A kind of production method of polypropylene composite material
  • A kind of production method of polypropylene composite material
  • A kind of production method of polypropylene composite material

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Embodiment 1

[0045] combine Figure 1~5 , a production method of polypropylene composite material in this embodiment, the feeding screw 121 provided at an incline through which the mixture passes in the hopper 110 is added to the feeding end of the extrusion unit 200, and the mixture entering the extrusion unit 200 is extruded The unit 200 conveys extrusion, melting, and reaction to the vacuum exhaust section 240, and the mixture in the vacuum exhaust section 240 is subjected to two-stage vacuuming treatment through the vacuum unit 300, and the mixture enters the extrusion process after vacuuming. The output section 250 shapes and extrudes the strip-shaped polypropylene composite material; the traction unit 700 provides traction for the strip-shaped polypropylene composite material, and the traction unit 700 pulls the strip-shaped polypropylene composite material to the pelletizing unit 800 for pelletizing.

[0046] The specific steps of the above method are:

[0047] Addition step

[00...

Embodiment 2

[0063] combine Figure 2-5 , a kind of polypropylene composite material production system for automobile interior decoration of the present embodiment, comprises feeding unit 100, extruding unit 200 and vacuumizing unit 300; Extruding unit 200 comprises feeding screw 201 and barrel 202, and feeding screw 201 is set In the barrel 202; the extrusion unit 200 includes a solid conveying section 210, a melting section 220, a reaction section 230 and a vacuum exhaust section 240 along the movement direction of the mixture. In addition, the barrel 202 of the extrusion unit 200 moves along the mixture There are 10 heating zones in sequence, which are the 1st to 10th heating zones. It should be noted that since the compound is a gradual transition process between the various processing stages in the extrusion unit 200, the extrusion unit 200 The corresponding relationship between each segment and each heating zone is a rough correspondence, not an absolute correspondence in spatial pos...

Embodiment 3

[0086] The content of this embodiment is basically the same as that of Embodiment 1, except that in the vacuum exhaust section 240, the temperature of the seventh heating zone in this embodiment is 227°C, the temperature of the eighth heating zone is 197°C, and the temperature of the ninth heating zone is The zone temperature is 197°C, that is, the temperature of the 8th heating zone is the same as that of the 9th heating zone, so that the temperature of the mixture when passing through the buffer section 242 can be quickly and steadily reduced to the same temperature as the temperature of the 9th heating zone, so that the subsequent two The vacuuming of the stage vacuum 320 is more stable to the removal process of VOC.

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Abstract

The invention discloses a polypropylene composite material production method, and belongs to the technical field of polypropylene composite material production. According to the polypropylene composite material production method, the slanting feed screw of the mixing material passing in the hopper is added to the feeding end of a extrusion unit, and the mixture material entering the extrusion unitis transported to extrusion, melting and reaction and moves to the vacuum exhaust section, the mixture in the vacuum exhaust section is processed by two-stage vacuum extraction through the vacuum extraction unit. After the vacuum extraction of the mixture, the mixture enters the extrusion section for molding and extrusion of long strip polypropylene composite material. The traction force of the elongated polypropylene composite material is provided by the traction unit which pulls the elongated polypropylene composite material to the granulating unit for granulating. According to the polypropylene composite material production method, on the one hand, the polypropylene mixture can be smoothly fed, and on the other hand, VOC content in the polypropylene composite material is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of polypropylene composite material production, and more specifically, relates to a production method of polypropylene composite material. Background technique [0002] At present, in the production process of plastics such as polypropylene, because plastics often entrain air, adsorbed moisture, residual monomers, low-boiling plasticizers, and oligomers that can volatilize at molding temperatures. Low-molecular organic compounds are easily produced during the modification process, and are volatile, but the existing extruder cannot completely discharge these components when there is only a single set of vacuum device, which will make the surface of the product dark and the product Pores, bubbles, streaks and other phenomena appear on the surface and inside of the product, which will affect the appearance and product quality of the product, as well as potential hidden dangers such as volatile matter and odor. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C48/76B29C48/92B29C48/355B29C48/505B29C48/535B29B9/06
Inventor 陈炜周彬
Owner 安徽纽麦特新材料科技股份有限公司
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