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Forming method for preparing environment friendly composite material by jean fabrics

A denim fabric and composite material technology, applied in the field of composite material manufacturing, can solve the problems of environmental pollution, low specific gravity, resource waste, etc., and achieve the effects of good wear resistance, low scratch resistance, good impact resistance and shock resistance

Inactive Publication Date: 2012-08-29
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Burning or landfilling these waste denim fabrics will not only bring environmental pollution, but also cause a huge waste of resources
[0003] The denim used in China is still dominated by cotton, and there are also denim produced from flax, ramie and polyester, but the proportion is small

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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  • Forming method for preparing environment friendly composite material by jean fabrics
  • Forming method for preparing environment friendly composite material by jean fabrics
  • Forming method for preparing environment friendly composite material by jean fabrics

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] Production of waste denim fabric polypropylene resin composite film

[0037] 1. The waste denim fabric 1 is washed, sterilized, dried, flattened, and then cut. (Length and width are both 20cm)

[0038] 2. Press the polypropylene resin masterbatch at a temperature of 180 degrees Celsius and a pressure of 4 MPa for 2 minutes to form a film with a thickness of about 0.2 mm.

[0039] 3. Place the finished 2-layer denim fabric 1 and the 3-layer polypropylene resin film alternately, and place the polyimide film on the upper and lower sides of the denim fabric and the polypropylene resin film.

[0040] 4. Put all the above-prepared materials into a flat plate hot press, preheat at 195 degrees Celsius for 3 minutes, and after the resin is melted, press it for 3 minutes at a pressure of 4 MPa.

[0041] 5. Put the hot-pressed composite material on a hot-pressing machine with a temperature of about 40 degrees Celsius and cold-press for 3 minutes under a pressure of 3 MPa. Afte...

example 2

[0043] Preparation of Thermoplastic Composites from Waste Denim Fabrics in Curved Shape

[0044] 1. The waste denim fabric 1 is washed, sterilized, dried, flattened, and then cut. (Length and width are both 20cm)

[0045] 2. Press the polypropylene resin masterbatch at a temperature of 180 degrees Celsius and a pressure of 4 MPa for 2 minutes to form a film with a thickness of about 0.2 mm.

[0046] 3. Prepare a metal mold 3 of a corresponding shape, place the finished denim fabric and the polypropylene resin film alternately, and place the polyimide film on the upper and lower sides of the denim fabric and the polypropylene resin film.

[0047] 4. Put all the above-prepared materials on a flat-plate hot press, preheat for 3-5 minutes at a temperature of 195 degrees Celsius, and press for 3 minutes at a pressure of 4 MPa after the resin is melted. The hot pressing time can be appropriately increased according to the number of layers of the denim fabric.

[0048] 5. Put the ...

example 3

[0050] Preparation of waste denim fabric thermoplastic sandwich composites

[0051] 1. The waste denim fabric 1 is washed, sterilized, dried, flattened, and then cut. (Length and width are both 20cm)

[0052] 2. Press the polypropylene resin masterbatch at a temperature of 180 degrees Celsius and a pressure of 4 MPa for 2 minutes to form a film with a thickness of about 0.2 mm.

[0053] 3. A board with a thickness of 2cm and a length and width of 20cm is used as the interlayer material. The selection requirements of the interlayer material are as follows: it can withstand a high temperature of about 200 degrees Celsius and a pressure of about 2 MPa.

[0054] 4. Place the thermoplastic resin film between the interlayer material and the waste denim fabric (such as image 3 shown), place the polyimide film on the upper and lower sides of the denim fabric and polypropylene resin film.

[0055] 5. Then put it on a flat plate hot press, preheat for 3-5 minutes at a temperature o...

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 forming method for preparing a thermoplastic green composite material by waste jean fabrics. The method comprises the following steps: recycling, classifying, cleaning, washing, drying, sterilizing, cutting and trimming the waste jean fabrics so as to obtain waste jean fabrics with corresponding sizes; and then alternately placing thermoplastic resin films and the trimmed jean fabrics; putting them into a mold to be hotly pressed; and after the resins are completely melted down and the jean fabrics are soaked, curing the mold at a certain pressure to obtain a composite material with a corresponding shape. The prepared composite material has the advantages of fashionable and vintage jean appearance as well as excellent mechanical property, shock resistance and wear resistance. The forming method for preparing the thermoplastic green composite material by the waste jean fabrics, provided by the invention, has the advantages of simplicity and suitability for industrial production; the recycling and treating problems of the waste jean fabrics are solved; a novel green composite material with low cost is also developed; and the types and application range of the thermoplastic composite materials are expanded.

Description

technical field [0001] The invention belongs to the technical field of composite material manufacturing, and in particular relates to a molding method for preparing an environment-friendly composite material from denim fabrics. Background technique [0002] Denim is an important part of clothing fabrics, and indigo-dyed denim is popular all over the world. Since the late 1970s, denim has undergone many major developments in China. In 2010, the annual production capacity of denim in my country is estimated to have reached more than 1.5 billion square meters, and it has become an important producer of denim in the world. With the development of the textile industry, consumers have higher and higher requirements for the comfort and fashion of clothing fabrics, and the service cycle of clothing is shortened. As a result, a large number of denim fabric products are discarded every year due to outdated styles or fabric stains. Incineration or landfill disposal of these waste de...

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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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/00
CPCY02P70/10
Inventor 许福军邱夷平谢松才赵焕曦李广军孟召双魏宝春
Owner DONGHUA UNIV
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