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One-step forming device for long glass fiber reinforced thermoplastic plastic plate

A technology for enhancing thermoplastic and plastic sheets, which can be applied to other household appliances, household appliances, flat products, etc., and can solve problems such as difficult structural uses

Inactive Publication Date: 2013-01-16
宣城福美达新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the performance of reinforced plastics is related to fiber length, it is difficult to use for structural purposes when the fibers are short

Method used

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  • One-step forming device for long glass fiber reinforced thermoplastic plastic plate
  • One-step forming device for long glass fiber reinforced thermoplastic plastic plate
  • One-step forming device for long glass fiber reinforced thermoplastic plastic plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A vertically arranged two-stage twin-screw extruder is adopted. The first-stage co-rotating twin-screw extruder is divided into 10 temperature control zones, the screw diameter is 30mm, and the L / D is 38. The second-stage counter-rotating parallel twin-screw extruder The extruder is divided into 6 temperature control zones, the diameter of the screw is 38mm, and the L / D is 18. The measured polypropylene and additives are fed into the first-stage co-rotating twin-screw extruder, and the glass fiber roving (accounting for thermoplastic 10% of the mass of the plastic) is introduced into the coupling agent infiltration tank on the surface treatment machine, passed through 8 hot rollers (100°C) and stayed for 15 minutes, and then fed into the third zone of the second-stage twin-screw, the glass fiber is cut and opened loose, and evenly mixed with the material sent by the first-stage co-rotating twin-screw extruder, extruded by the second-stage twin-screw coat hanger die (head...

Embodiment 2

[0021] A vertically arranged two-stage twin-screw extruder is adopted. The first-stage co-rotating twin-screw extruder is divided into 10 temperature control zones, the screw diameter is 30mm, and the L / D is 38. The second-stage counter-rotating parallel twin-screw extruder The extruder is divided into 6 temperature control zones, the diameter of the screw is 38mm, and the L / D is 18. The measured polypropylene and additives are fed into the first-stage co-rotating twin-screw extruder, and the glass fiber roving (accounting for thermoplastic 10% of the mass of the plastic) is introduced into the coupling agent infiltration tank on the surface treatment machine, passed through 8 hot rollers (100°C) and stayed for 15 minutes, and then fed into the third zone of the second-stage twin-screw, the glass fiber is cut and opened loose, and evenly mixed with the material sent by the first-stage co-rotating twin-screw extruder, extruded by the second-stage twin-screw coat hanger die (head...

Embodiment 3

[0024]A vertically arranged two-stage twin-screw extruder is adopted. The first-stage co-rotating twin-screw extruder is divided into 9 temperature control zones, the screw diameter is 65mm, L / D is 40, and the second-stage counter-rotating parallel twin-screw extruder The extruder is divided into 4 temperature control zones, the diameter of the screw is 75mm, and the L / D is 9. The measured polyvinyl chloride, additives, and activated calcium carbonate are fed into the first-stage co-rotating twin-screw extruder. The roving (accounting for 10% of the mass of thermoplastic) is introduced into the coupling agent infiltration tank on the surface treatment machine, passed through 6 hot rollers (110°C) for 10 minutes, and then fed into the second stage of the twin-screw zone 2, glass fiber After being sheared, loosened, and evenly mixed with the materials sent by the first-stage co-rotating twin-screw extruder, it is extruded by the second-stage twin-screw coat hanger die head (head ...

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Abstract

The invention discloses a one-step forming device for a long glass fiber reinforced thermoplastic plastic plate based on double-cascade twin-screw extrusion. The one-step forming device comprises the following parts: a first-cascade co-rotating twin-screw extruder 1, a second-cascade counter-rotating twin-screw extruder 2, a glass fiber surface processor 3, a clothes-hanger-type mould head 4, a three-roll calendar 5, a setting machine 6 and a cutting machine 7, wherein thermoplastic plastic, auxiliaries and fillers are fed to the first-cascade co-rotating twin-screw extruder 1; the mixture is fed to the second-cascade counter-rotating twin-screw extruder 2 after being blended and pre-plasticized by the first-cascade co-rotating twin-screw extruder 1, introduced to the second-cascade counter-rotating twin-screw extruder after being treated by the glass fiber surface processor 3, uniformly mixed with resin so as to be further plasticized, and finally packaged through the three-roller calendar 5, the sizing machine 6 and the cutting machine 7 after being extruded by the clothes-hanger type mould head 4. The glass fiber reinforced thermoplastic plastic plate acquired through the device disclosed by the invention has the advantages that the glass fiber length distribution is rational; the glass fiber beam is completely loosened; and the resin is uniformly permeated.

Description

technical field [0001] The invention belongs to the technical field of plastic processing equipment, and relates to a long glass fiber reinforced thermoplastic plate forming equipment, in particular to a one-step forming equipment for a long glass fiber reinforced thermoplastic plate based on double-stage twin-screw extrusion. Background technique [0002] At present, there are two types of processing technologies for long glass fiber reinforced thermoplastics: one is to process long glass fiber reinforced thermoplastic pellets first, and then prepare them through two-step injection or extrusion molding; the other is to mix them on the production line. One-step preparation of mixing resin, additives, glass fiber and directly molding into products. There are two main advantages of the one-step molding of long glass fiber reinforced thermoplastics: 1. The cooling and heating process is reduced, and the energy consumption is reduced by at least 20% compared with the traditional...

Claims

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Application Information

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IPC IPC(8): B29C70/52B29C70/54B29L7/00
Inventor 董擎之张彦庆高楠陈福涛汪根龙张三喜
Owner 宣城福美达新材料有限公司
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