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A kind of ultra-thin continuous fiber reinforced thermoplastic resin prepreg and preparation method thereof

A thermoplastic resin and enhanced thermoplastic technology, applied in the direction of coating, can solve the problems of difficult to achieve high temperature resistance and high viscosity, large deformation of prepreg, environmental pollution, etc., to reduce defects and facilitate infiltration.

Active Publication Date: 2019-05-24
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN104494170A manufactures a thermoplastic composite material prepreg unidirectional tape by solution impregnation method, and uses thermoplastic resin solution to impregnate fibers, which is easy to cause environmental pollution
[0005] Existing patents related to thermoplastic resin prepreg manufacturing technology are difficult to achieve sufficient infiltration of continuous fibers with high-temperature resistant and high-viscosity thermoplastic resin systems and achieve mechanical strength comparable to thermosetting resin prepregs
In addition, the traditional continuous fiber-reinforced thermoplastic resin prepreg has a large deformation when preparing complex curved surface parts, which is not conducive to reflecting high mechanical properties.

Method used

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  • A kind of ultra-thin continuous fiber reinforced thermoplastic resin prepreg and preparation method thereof
  • A kind of ultra-thin continuous fiber reinforced thermoplastic resin prepreg and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059]By adjusting the extruded amount of the thermoplastic high-temperature melt extruded by the extruder docked with the impregnated die and the distance between the exits of the impregnated die, the raw materials and feed ratios used to prepare the continuous carbon fiber reinforced thermoplastic prepreg are controlled as follows:

[0060] Continuous carbon fiber (Toray T700SC, 12K continuous carbon fiber) 50wt%,

[0061] Polyetheretherketone resin (melt index at 380°C is 85g / 10min) 50wt%;

[0062] The preparation process includes the following steps:

[0063] First, the continuous carbon fiber yarn 2 is placed on the creel 1, and the continuous carbon fiber yarn 2 is drawn to the needle-shaped yarn guide device 3 under the action of the rubber pulling roller 6, so that the continuous carbon fiber yarn 2 is evenly arranged; the evenly arranged continuous carbon fiber yarn 2 Pass through the fiber thickness adjustment device 4 to adjust the thickness of the carbon fiber yar...

Embodiment 2

[0079] The extrusion rate of the thermoplastic high-temperature melt extruded by the extruder docked with the impregnation die and the outlet distance of the impregnation die are controlled to prepare the continuous carbon fiber reinforced thermoplastic prepreg raw material and the feed ratio as follows:

[0080] Continuous carbon fiber (Toray T700SC, 12K continuous carbon fiber) 50wt%,

[0081] Polyetheretherketone resin (melt index at 380°C is 85g / 10min) 50wt%;

[0082] The preparation process includes the following steps:

[0083]First, the continuous carbon fiber yarn 2 is placed on the creel 1, and the continuous carbon fiber yarn 2 is drawn to the needle-shaped yarn guide device 3 under the action of the rubber pulling roller 6, so that the continuous carbon fiber yarn 2 is evenly arranged; the evenly arranged continuous carbon fiber yarn 2 Pass through the fiber thickness adjustment device 4 to adjust the thickness of the carbon fiber yarn to about 40 μm and the width ...

Embodiment 3

[0088] The extrusion rate of the thermoplastic high-temperature melt extruded by the extruder docked with the impregnation die and the outlet distance of the impregnation die are controlled to prepare the continuous carbon fiber reinforced thermoplastic prepreg raw material and the feed ratio as follows:

[0089] Continuous carbon fiber (Toray T700SC, 12K continuous carbon fiber) 50wt%,

[0090] Polyetheretherketone resin (melt index at 380°C is 85g / 10min) 50wt%;

[0091] The preparation process includes the following steps:

[0092] First, the continuous carbon fiber yarn 2 is placed on the creel 1, and the continuous carbon fiber yarn 2 is drawn to the needle-shaped yarn guide device 3 under the action of the rubber pulling roller 6, so that the continuous carbon fiber yarn 2 is evenly arranged; the evenly arranged continuous carbon fiber yarn 2 Pass through the fiber thickness adjustment device 4 to adjust the thickness of the carbon fiber yarn to about 30 μm and the width...

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Abstract

The invention discloses a preparation method of a continuous fiber reinforced thermoplastic resin prepreg. The method comprises the steps of: (1) thinning continuous fiber; and (2) impregnating the thinned fiber prepared in step (1) with thermoplastic resin melt. The method provided by the invention particularly can realize impregnation of fiber in high temperature and high viscosity PEEK resin so as to obtain high performance continuous fiber reinforced thermoplastic prepreg.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic composite materials. In particular, the present invention relates to a method for preparing an ultra-thin continuous fiber reinforced thermoplastic resin prepreg and the prepreg thus obtained. Background technique [0002] Continuous fiber reinforced thermoplastic composites have excellent high and low temperature impact resistance and damage tolerance, especially continuous carbon fiber reinforced thermoplastic composites, especially the tensile strength of continuous carbon fiber reinforced polyetheretherketone (PEEK) composites and thermosetting resin composites The strength and tensile modulus are equivalent, and the molding cycle is short, the use temperature range is wide, and it can be recycled by heating and melting. Therefore, it has been greatly developed in aerospace and various industrial fields in recent years. [0003] At present, in order to improve the production efficiency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B15/14
CPCB29B15/14
Inventor 肇研王凯陈俊林董安琪李学宽樊星
Owner BEIHANG UNIV
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