Unlock instant, AI-driven research and patent intelligence for your innovation.

Carbon fiber/thermoplastic fiber mixed felt, preparation method thereof and a carbon-fiber-reinforced thermoplastic-resin-based composite

A thermoplastic fiber and carbon fiber technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of loss of quality and mechanical properties, easy shedding of carbon fibers, poor bonding of carbon fibers and resin interfaces, etc., to reduce loss and transportation costs, Excellent mechanical properties, the effect of reducing the overall volume

Active Publication Date: 2020-08-18
DONGHUA UNIV
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Carbon fiber-reinforced thermoplastic resin-based composites are generally prepared by hot-pressing carbon fiber / thermoplastic fiber mixed felts. The carbon fiber / thermoplastic fiber mixed felts currently used are mainly prepared by acupuncture reinforcement. In the process of needle punching reinforcement, the carbon fiber will be damaged by the metal parts, the mechanical properties of the final product cannot meet the higher requirements, and the interface between carbon fiber and resin in the composite material prepared by using needle punched fiber mat Poor bonding also leads to poor mechanical properties of the composite material; moreover, the thickness of the needle-punched fiber felt is relatively large and fluffy, which is not only unfavorable for handling, but the carbon fiber in the felt is also easy to fall off during use, losing a small amount of quality and mechanical properties, and causing damage to surrounding electrical appliances. create a threat

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Carbon fiber/thermoplastic fiber mixed felt, preparation method thereof and a carbon-fiber-reinforced thermoplastic-resin-based composite
  • Carbon fiber/thermoplastic fiber mixed felt, preparation method thereof and a carbon-fiber-reinforced thermoplastic-resin-based composite

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The invention provides a kind of preparation method of carbon fiber / thermoplastic fiber mixed felt, comprises the following steps:

[0025] Recycled carbon fiber and thermoplastic fiber are pre-opened separately, and the pre-opened recycled carbon fiber and thermoplastic fiber are mixed, followed by secondary opening, carding, cross-laying and thermal bonding reinforcement to obtain carbon fiber / thermoplastic fiber. Fiber mixed felt.

[0026] In the present invention, the recycled carbon fibers are specifically carbon fibers recovered from waste carbon fiber composite materials; the present invention uses recycled carbon fibers as raw materials, which can reduce production costs, and the carbon fiber surface slurry has been removed during the recycling process. In the present invention Among them, if it is necessary to sizing the carbon fiber, the sizing treatment can be carried out directly, and there is no need to clean the original sizing on the surface of the carbon...

Embodiment 1

[0046] Raw material: recycled carbon fiber, tensile modulus 230GPa, fiber length 50mm, density 1.8g / cm 3 ;Maleic anhydride modified polypropylene fiber, the fiber length is 50mm, the density is 0.9g / cm 3 .

[0047] Preparation steps:

[0048] 1) Preparation of carbon fiber / polypropylene fiber mixed felt (CF / PP fiber felt): pre-open recycled carbon fiber and maleic anhydride-modified polypropylene fiber, then mix them at a weight ratio of 40:60, and carry out secondary mixing after mixing. Secondary opening, obtain mixed fiber; Mixed fiber is carded (the carding machine of carding comprises chest cylinder, main cylinder, stripping roller, doffer, the first condensing roller and the second condensing roller; The carding machine The output side is provided with a take-up conveyor belt; set the speed of the doffer as Va, the speed of the first agglomeration roller as Vb, the speed of the second agglomeration roller as Vc, and the speed of the take-up conveyor belt as Vd, where V...

Embodiment 2

[0053] Raw material is consistent with embodiment 1.

[0054] Preparation steps:

[0055] 2) Preparation of carbon fiber / polypropylene fiber mixed felt (CF / PP fiber felt) Recycled carbon fiber and maleic anhydride modified polypropylene fiber are pre-opened, then mixed at a weight ratio of 40:60, and mixed for a second time Open to obtain mixed fiber; mixed fiber is carded (the carding machine of carding comprises chest cylinder, main cylinder, stripping roll, doffer, first condensing roll and second condensing roll; the output of described carding machine The side is provided with a take-up conveyor belt; the speed of setting the doffer is Va, the speed of the first agglomeration roller is Vb, the speed of the second agglomeration roller is Vc, and the speed of the take-up conveyor belt is Vd, wherein Va / Vb is 2.5, Vb / Vc is 2, Vc / Vd is 0.12), the carbon fiber is evenly dispersed in the thermoplastic synthetic fiber by carding, and the carbon fiber is entangled with the ther...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of reinforced resin composites, and provides a carbon fiber / thermoplastic fiber mixed felt, a preparation method thereof and a carbon-fiber-reinforced thermoplastic-resin-based composite. The mixed felt is prepared through a non-weaving technology, carbon fibers and thermoplastic fibers are evenly mixed through the steps of pre-opening, mixing, secondary-opening and carding, after cross lapping, through thermal bonding reinforcement, the thermoplastic fibers are molten and quickly composited with the carbon fibers, and the problem of difficult impregnation of thermoplastic resin in the carbon fibers is relieved; the carbon fiber / thermoplastic fiber mixed felt is prepared in a thermal bonding reinforcement mode, original lengths of the carbon fibers are retained, damage caused to the carbon fibers is reduced, and the thickness of the obtained mixed felt is greatly decreased; the carbon-fiber-reinforced thermoplastic-resin-based composite withthe excellent mechanical property can be prepared through the mixed felt; and the interfacial bondability of the carbon fibers and the resin in the carbon-fiber-reinforced thermoplastic-resin-based composite provided by the invention is good, and the mechanical property is excellent.

Description

technical field [0001] The invention relates to the technical field of reinforced resin composite materials, in particular to a carbon fiber / thermoplastic fiber and a preparation method thereof, and a carbon fiber reinforced thermoplastic resin-based composite material. Background technique [0002] Carbon fiber reinforced thermoplastic resin matrix composite material is a composite material with carbon fiber as reinforcing fiber and thermoplastic fiber as matrix. It has high specific strength and modulus and is widely used in medical equipment, wear-resistant mechanical parts, aerospace and other fields. . [0003] Carbon fiber-reinforced thermoplastic resin-based composites are generally prepared by hot-pressing carbon fiber / thermoplastic fiber mixed felts. The carbon fiber / thermoplastic fiber mixed felts currently used are mainly prepared by acupuncture reinforcement. In the process of needle punching reinforcement, the carbon fiber will be damaged by the metal parts, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/541D04H1/558
CPCD04H1/541D04H1/558D10B2101/12
Inventor 阳玉球杨阳邵元祎
Owner DONGHUA UNIV