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Preparation method for high-performance composite line for polypropylene-based composite material

A composite material, polypropylene-based technology, used in textiles, papermaking, yarn, etc., to achieve good mechanical properties, high heat distortion temperature, and improved weaveability.

Active Publication Date: 2014-10-08
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a high-performance composite thread for polypropylene-based composite materials. The present invention overcomes the performance shortcomings of a single fiber, improves the weavability of the composite thread during subsequent weaving and processing, and has a good appearance and mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The preparation method of a high-performance composite wire for polypropylene-based composite materials in this embodiment is as follows: the reinforcing fiber is made of basalt fiber with a fineness of 850tex, the matrix fiber is made of polypropylene fiber, and the fineness of the combined polypropylene fiber is 110tex, the fineness of polypropylene fiber for covering is 100tex. According to the fineness of reinforcing fiber and matrix fiber, this embodiment chooses wrapping technology, adopts fancy twister, firstly combines basalt fiber and combined polypropylene fiber without twisting, and then spirally distributes wrapped polypropylene fiber The acrylic fibers are sheathed on the outside to form a stable wrapping yarn structure. The resulting wrapped composite wire has a fineness of 1100tex, a tensile strength of 802MPa, and a volume ratio of basalt fiber to polypropylene fiber in the composite wire of 50:50 (percentage).

[0014] After the basalt fiber of this em...

Embodiment 2

[0016] A method for preparing a high-performance composite wire for polypropylene-based composite materials in this embodiment. The raw materials are: the reinforcing fibers are basalt fibers and glass fibers, wherein the fineness of the basalt fibers is 600tex, and the fineness of the glass fibers is 490tex. The base fiber is polypropylene fiber, and the fineness of the combined polypropylene fiber is 110tex, and the fineness of the polypropylene fiber for covering is 110tex. According to the fineness of reinforcing fiber and matrix fiber, this embodiment chooses wrapping technology, adopts fancy twister, first combines basalt fiber, glass fiber and combined polypropylene fiber without twisting, and then wraps spirally distributed The sheath is wrapped with polypropylene fibers on its outside to form a stable wrapping yarn structure. The resulting wrapping composite wire has a fineness of 1340tex, a tensile strength of 599MPa, and a volume ratio of reinforcing fibers to polyp...

Embodiment 3

[0019] The preparation method of a high-performance composite wire for polypropylene-based composite materials in this embodiment is as follows: the reinforcing fiber is glass fiber with a fineness of 216tex, and the matrix fiber is polypropylene fiber with a fineness of 116tex. According to the fineness of the reinforcing fiber and the matrix fiber, the air-jet network technology is selected in this embodiment. First, the air-jet network machine is used to combine the glass fiber and the polypropylene fiber without twisting, and the air-jet pressure is controlled to 0.20MPa to entangle the two kinds of monofilaments. , forming periodic network points. The fineness of the obtained network composite wire is 333tex, the tensile strength is 235MPa, and the volume ratio of reinforcing fiber and polypropylene fiber in the composite wire is 40:60 (percentage).

[0020] The glass fiber and polypropylene fiber of this embodiment are combined without twisting, and form periodic network...

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Abstract

The invention discloses a preparation method for a high-performance composite line for a polypropylene-based composite material. The preparation method comprises the following steps that reinforced fibers with different thicknesses and base body fibers which are polypropylene fibers are used as raw materials, and the composite line is prepared by selecting the wrapping technology or the air injection network technology according to different finenesses of the reinforced fibers and the base body fibers; the reinforced fibers are one or two kinds of basalt fibers and glass fibers. The preparation method overcomes the performance shortcomings of simplex fibers, and improves the weavability of the composite line in the follow-up weaving and processing process, and the composite line is good in appearance and mechanical performance. Meanwhile, it is guaranteed that the composite line contains a large proportion of polypropylene fibers, the difference between the performance of the reinforced fibers and the performance of the polypropylene fibers is utilized, and therefore forming quality of follow-up fiber reinforced composite materials in the direct thermo-compression formation process is guaranteed.

Description

technical field [0001] The invention relates to a method for preparing a novel composite wire, in particular to a method for preparing a high-performance composite wire for developing polypropylene-based fiber-reinforced composite materials. Background technique [0002] The development of science and technology has promoted the continuous updating and progress of new materials, and the wide application of new materials is the key to further promote the development of science and technology. In the field of industrial textiles, polypropylene-based fiber-reinforced composite materials have good mechanical properties and excellent impact strength, and have the advantages of light weight, low cost, simple molding process, recyclability, and environmental protection. At present, the performance, environmental protection and price problems of composite structural materials have good development prospects. [0003] In the field of fiber-reinforced composite materials, glass fiber...

Claims

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Application Information

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IPC IPC(8): D02G3/38D02G3/04
Inventor 刘双双祝成炎田伟张红霞
Owner ZHEJIANG SCI-TECH UNIV
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