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Preparation method of spun yarn fabric for enhancing thermoplastic resin

A technology for enhancing thermoplasticity and thermoplastic resins, which is applied in fiber processing, plant fibers, textiles and papermaking, etc. It can solve the problem of difficult entry of molten resin in spun yarns, achieve improved mechanical properties, low cost, and good application prospects.

Inactive Publication Date: 2012-04-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of spun yarn fabric for reinforcing thermoplastic resin, which solves the problem that the molten resin in the spun yarn is difficult to enter, so that the fibers of the yarn can be bonded together, Application in composite materials can obviously improve the mechanical properties of composite materials, and has a good application prospect

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
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  • Preparation method of spun yarn fabric for enhancing thermoplastic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The spun yarn fabric is a three-dimensional orthogonal ramie woven fabric. Warp and weft yarn fineness is 560tex, warp density: 44 threads / 10cm, weft density: 40 threads / 10cm, width: 35cm, warp yarn 3 layers, weft yarn 4 layers, fabric thickness 3mm, according to the size required for hot pressing (30cm×30cm) cutting. Use a glass transition temperature of 90°C (the resin is composed of 88% by weight of methyl methacrylate, 3% of acrylic acid and 9% of butyl acrylate), and an emulsion of 4% thermoplastic resin relative to the weight of the spun yarn fabric , the ramie woven fabric is completely submerged, the emulsion of the thermoplastic resin is immersed in the fabric for 20 minutes, the fabric soaked in the emulsion of the thermoplastic resin is taken out, the excess emulsion is pressed off, and dried to obtain the ramie fabric infiltrated with the thermoplastic resin.

[0019] Then lay the fabric and PP film at intervals, hot press with a flat vulcanizer at a temper...

Embodiment 2

[0021] Spun yarn fabric is linen plain weave fabric. The warp and weft fineness is 3850tex, warp density: 6 threads / 10cm, weft density: 5 threads / 10cm. Use the resin that glass transition temperature is 110 ℃, (resin is made up of the methyl methacrylate of 87%, the methyl acrylate of 8%, the methacrylic acid of 4% and the N-methylol acrylamide of 1% by weight percentage Potentially cross-linked), with respect to the emulsion of 2% thermoplastic resin by weight of spun yarn fabric, the linen plain woven fabric is completely submerged, the emulsion of thermoplastic resin is immersed in the fabric for 15 minutes, the fabric soaked in the emulsion of thermoplastic resin is taken out, pressed Remove excess lotion and dry to obtain resin-impregnated linen.

[0022] Observing the yarn section in the fabric with an optical microscope, it was observed that resin was contained inside the flax yarn, which confirmed that the resin had entered the inside of the flax yarn.

Embodiment 3

[0024] The spun yarn fabric is a cotton weft knitted fabric. Yarn fineness is 90tex, machine number E36, uses the resin (resin is made up of the styrene of 22% by weight percentage, the acrylic acid of 5% and the butyl acrylate of 73% that glass transition temperature is 40 ℃), relative to short fiber Submerge the cotton weft-knitted fabric completely with an emulsion of 8% thermoplastic resin by yarn fabric weight, and soak the emulsion of thermoplastic resin in the fabric for 10 minutes, take out the fabric soaked in the emulsion of thermoplastic resin, press off excess emulsion, dry, That is, the cotton weft-knitted fabric infiltrated with resin is obtained.

[0025] The cotton yarn section in the fabric was observed with an optical microscope, and it was observed that resin was contained inside the cotton yarn, which confirmed that the resin had entered the inside of the yarn.

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
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Abstract

The invention relates to a preparation method of a spun yarn fabric for enhancing a thermoplastic resin. The preparation method comprises the following steps: a thermoplastic resin emulsion with the weight of 1-8% of the weight of the spun yarn fabric is adopted to dip the fabric, and the dipped fabric is taken out, is subjected to superfluous emulsion removal and is dried to obtain the resin-infiltrated spun yarn fabric. The preparation method which has the advantages of convenient operation, low cost and no presence of organic solvents in the whole process is an environmentally friendly processing technology; resins with any vitrification points, even thermal crosslinking resins can be prepared through the emulsion polymerization, so yarns have various viscoelasticities, thereby the absence of the organic solvents is endowed in the preparation process of composite materials with various excellent performances; and a problem that molten resins are difficult to infiltrate the spun yarn is solved, so fibers of the yarn can be bonded, thereby the preparation method, which allows mechanical performances of the composite materials to be obviously improved when the preparation method is applied to the composite materials, has a good application prospect.

Description

technical field [0001] The invention belongs to the field of natural plant fiber reinforced thermoplastic resins, in particular to a method for preparing spun yarn fabrics used for reinforcing thermoplastic resins. Background technique [0002] Natural plant fiber-reinforced thermoplastic resins are classified as green composites because of their recyclability and reprocessing characteristics. Plant fiber has high cellulose content and high strength; thermoplastic resin has good mechanical properties, corrosion resistance, good sound insulation performance, good energy absorption capacity, impact resistance, no brittle fracture, and the most important thing is that it has repeatable melting processing and use that thermosetting resins do not have. specialty. Generally, composites using short fiber reinforced thermoplastic resins often cannot meet the higher mechanical requirements of filament composites due to the short length of the fibers. In the past, short fibers were ...

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
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Application Information

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IPC IPC(8): D06M15/263C08J5/06C08L23/12D06M101/06
Inventor 章倩邱夷平姚澜纪峰赵剑蒙房晓萌刘蕴莹章悦庭
Owner DONGHUA UNIV
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