Polypropylene composite material extrusion device and use method thereof

A composite material and extrusion device technology, which is applied in the field of polypropylene polymer materials, can solve the problems of VOC content reduction, etc., and achieve the effect of expanding the area, increasing the feeding amount, and reducing the VOC content

Active Publication Date: 2018-11-27
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

[0007] The purpose of the present invention is to solve the problem that VOC in the mixture cannot be effectively removed when producing polypropylene composite materials in the prior art, and to provide a polypropylene composite material extrusion device and its use method, through temperature and two-stage vacuum pumping , so as to achieve effective reduction of VOC content in polypropylene composites

Method used

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  • Polypropylene composite material extrusion device and use method thereof
  • Polypropylene composite material extrusion device and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] combine Figure 1~2 , a polypropylene composite extrusion device of the present embodiment includes a feeding unit 100, an extrusion unit 200 and a vacuum unit 300; the extrusion unit 200 includes a feeding screw 201 and a barrel 202, and the feeding screw 201 is arranged on 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 moving direction of the mixture. In addition, the barrel 202 of the extrusion unit 200 is arranged in sequence along the moving direction of the mixture There are 10 heating zones, which are respectively 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, each branch of the extrusion unit 200 The corresponding relationship between the section and each heating zone is a rough correspondence, not an absolute correspond...

Embodiment 2

[0063] 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.

Embodiment 3

[0065] 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 230°C, the temperature of the eighth heating zone is 195°C, and the temperature of the ninth heating zone The temperature of the zone is 195°C, that is, the temperature of the 8th heating zone and the 9th heating zone are the same, so that the temperature of the mixture can be quickly reduced when it passes through the buffer section 242, and the decomposition of small molecules in the mixture due to high temperature can be quickly suppressed, effectively reducing VOC content in polypropylene composite products.

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Abstract

The invention discloses a polypropylene composite material extrusion device and a use method thereof, and belongs to the technical field of polypropylene high polymer materials. The polypropylene composite material extrusion device comprises a feeding unit, an extrusion unit and a vacuumizing unit; the feeding unit is arranged on a solid conveying section of the extrusion unit to achieve the accurate addition of a mixture; the vacuumizing unit is arranged on a vacuum exhaust section of the extrusion unit, and comprises a first-grade vacuum extractor and a second-grade vacuum extractor; the vacuum exhaust section comprises a first-grade vacuum section, a buffer section and a second-grade vacuum section sequentially in a movement direction of the mixture, in addition, the screw pitch of a threaded rod in the vacuum exhaust section is increased, the area of air extraction can be enlarged, and through the combination of the VOC generation characteristics of a polypropylene composite material in the production process and the cooperation of temperature and two-grade vacuum extraction, the VOC content in the produced polypropylene composite material is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of polypropylene polymer materials, and more specifically, relates to a polypropylene composite extrusion device and a method for using the same. Background technique [0002] Polypropylene is a semi-crystalline thermoplastic, because of its excellent comprehensive properties, good chemical stability, good molding performance and relatively low price, it is widely used in the industry, especially in automotive interior parts field is used more. [0003] At present, polypropylene series composite materials are mostly used in automotive interior parts, which are used for large interior parts such as instrument panels, door guards, and decorative panels. However, during the use of the car, due to the high temperature inside the car, the volatile organic compounds (VOC) in the polypropylene material will be released, and the long-term release will cause physical harm to the occupants in the car and fog up in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/76B29C47/92B29C48/76B29C48/92
Inventor 周彬陈炜
Owner 安徽纽麦特新材料科技股份有限公司
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