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Device and process for producing online reinforced polypropylene material by using continuous long fibers

A polypropylene material and production device technology, applied in the field of polypropylene material preparation, can solve the problems of short fiber length and obvious increase in the performance index of polypropylene material, etc.

Pending Publication Date: 2021-10-01
山东泰氏新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the problems existing in the above-mentioned prior art, the object of the present invention is to provide a production device and process for using continuous long fibers to reinforce polypropylene materials online. When producing polypropylene materials, the continuous uncut long fibers are input in an orderly manner The second feed port of the two-stage twin-screw extruder effectively solves the problem of short fiber length in the reinforced polypropylene material, and the performance indicators of the obtained polypropylene material increase significantly

Method used

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  • Device and process for producing online reinforced polypropylene material by using continuous long fibers
  • Device and process for producing online reinforced polypropylene material by using continuous long fibers
  • Device and process for producing online reinforced polypropylene material by using continuous long fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0036] like figure 1 , figure 2As shown, this embodiment provides an on-line reinforced polypropylene material production device utilizing long fibers, including: a first-stage screw extruder 1, a second-stage twin-screw extruder 2, a squeeze injection molding system 3, and a clamping system 4 , sequential dispersing frame 9, secondary twin-screw extruder screw 10, first dispersing frame shell 9.1, first fiber air conveying channel 9.2, first fiber conveying port 9.3, second dispersing frame shell 9.4, second fiber air conveying Channel 9.5, second fiber delivery port 9.6.

[0037] The first-stage screw extruder 1 is provided with a feed hopper 5, the first feed port of the second-stage twin-screw extruder 2 is connected to the extrusion die 6 of the first-stage screw extruder 1, and the extrusion injection molding system 3 is connected with the extrusion port 8 of the secondary twin-screw extruder 2, and the clamping system 4 is connected with the extrusion injection moldi...

Embodiment 2

[0045] This embodiment provides a production process for utilizing long fiber online reinforced polypropylene material, which is carried out by the production device in Example 1, including the following steps:

[0046] (1) Mix polypropylene and additives at a mass ratio of 6:1 and add them to the feed hopper set on the first-stage screw extruder, cut by the reamer at the outlet below the feed hopper and enter the first-stage screw In the extruder, plasticize at 200°C for 30s, and the plasticized molten polypropylene is extruded from the extrusion die of the first-stage screw extruder, and enters the first feed port of the second-stage twin-screw extruder;

[0047] (2) Continuously and orderly input the glass fiber (GF) into the second feed port of the secondary twin-screw extruder through the sequential dispersion frame, and then mix with the molten polypropylene material from the primary screw extruder for further plasticization , the plasticizing temperature is 220°C, and t...

Embodiment 3

[0053] This embodiment provides a production process for utilizing long fiber online reinforced polypropylene material, which is carried out by the production device in Example 1, including the following steps:

[0054] (1) Mix polypropylene and additives at a mass ratio of 6:1 and add them to the feed hopper set on the first-stage screw extruder, cut by the reamer at the outlet below the feed hopper and enter the first-stage screw In the extruder, plasticize at 180°C for 40s, and the plasticized molten polypropylene is extruded from the extrusion die of the first-stage screw extruder, and enters the first feed port of the second-stage twin-screw extruder;

[0055] (2) The basalt fiber is continuously and orderly input into the second feeding port of the secondary twin-screw extruder through the sequential dispersion frame, and then mixed with the molten polypropylene material from the primary screw extruder for further plasticization and plasticization The temperature is 240°...

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Abstract

The invention relates to a device for producing an online reinforced polypropylene material by using continuous long fibers. The device comprises a first-stage screw extruder, a second-stage twin-screw extruder, am extrusion injection molding system, a mode locking system and a sequential dispersion frame, wherein the first-stage screw extruder is provided with a feeding hopper; a first feeding hole of the second-stage twin-screw extruder is connected with an extrusion die of the first-stage screw extruder; the extrusion injection molding system is connected with an extrusion die of the second-stage twin-screw extruder; the mode locking system is connected with the extrusion injection molding system; the sequential dispersion frame is arranged at a second feeding hole of the second-stage twin-screw extruder; and the fibers pass through the sequential dispersion frame and then enter the second-stage twin-screw extruder from the second feeding hole. When the polypropylene material is produced, continuous and long uncut fibers are orderly input into the second feeding hole of the secondary twin-screw extruder, so that the problems of high energy consumption in two-time processing of the long fibers and small fiber length in the reinforced polypropylene material are effectively solved, and various performance indexes of the obtained polypropylene material are obviously increased.

Description

technical field [0001] The invention relates to the technical field of polypropylene material preparation, in particular to a production device and process for using continuous long fibers to reinforce polypropylene material on-line. Background technique [0002] Long fiber reinforced polypropylene is a composite material with high strength and light weight. Fibers used as raw materials usually exist in the form of long continuous fibers. When used as raw materials, continuous long fibers must usually be cut into short lengths. Fiber usage. The so-called long fibers in LFT are compared with the fibers used in ordinary fiber reinforcement (SFT). Normally, the length of fibers in fiber reinforced materials (SFT) is generally 0.2-0.4 mm, while in LFT, the length of fibers is generally greater than 2 mm, and can even be kept above 5 mm. In the existing production process of long-fiber reinforced polypropylene materials, long-fiber pellets (length 2-3mm) are processed first, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/395B29C48/40B29C48/92B29C48/285B29C45/27B29C69/02
CPCB29C45/2708B29C48/0013B29C48/2886B29C48/397B29C48/40B29C48/92B29C69/02B29C2948/92704
Inventor 李振谢惠芝
Owner 山东泰氏新材料科技有限责任公司