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Fabric containing polylactic acid fabric

A polylactic acid fiber and fabric technology, applied in the direction of fabrics, fiber chemical characteristics, textiles, etc., can solve the problems of poor hydrolysis resistance, affecting the performance of polylactic acid fibers, affecting the wide application of polylactic acid fibers, and achieving the effect of solving difficult dyeing.

Inactive Publication Date: 2011-09-14
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polylactic acid fiber has superior degradability, which leads to its poor hydrolysis resistance. During the dyeing process, the fabric is treated with high pressure and high temperature, and the strength of the fabric will decrease, and it will inevitably affect the moisture in the wet sea during transportation. The properties of polylactic acid fibers affect the wide application of polylactic acid fibers

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The polylactic acid fiber that contains 4% weight polycarbodiimide antihydrolysis agent is made into woven fabric as the warp component of woven fabric, cuts a piece of fabric, extracts a PLA (polylactic acid fiber) precursor from it and measures its strength P1, In addition, after the prepared woven fabric was heated in 120°C water for 30 minutes, a PLA (polylactic acid fiber) precursor was extracted from the fabric to measure its strength P2, and the ratio of P2 to P1, that is, the strength retention rate, reached 85%. . The fabric can be dyed under this condition (heating in water at 120°C for 30 minutes).

[0013] After the woven fabric made above was treated for 10 days in an environment with a humidity of 90% and a temperature of 70°C, the PLA precursor was extracted from the fabric, and its strength P3 was measured, and the ratio of P3 to P1 was calculated, that is, the strength retention rate, and the strength retention rate was 75 %.

[0014] The anti-hydroly...

Embodiment 2

[0016] The polylactic acid fiber that contains 0.6% weight polycarbodiimide antihydrolysis agent is made into woven fabric as the warp and weft yarn component of woven fabric, cuts a piece of fabric, extracts a PLA (polylactic acid fiber) precursor from it and measures its intensity P1 In addition, after the prepared woven fabric was heated in 120°C water for 30 minutes, a PLA (polylactic acid fiber) precursor was extracted from the fabric to measure its strength P2, and the ratio of P2 to P1, that is, the strength retention rate, reached 65. %. The fabric can be dyed under this condition (heating in water at 120°C for 30 minutes).

[0017] After the woven fabric made above was treated for 10 days in an environment with a humidity of 90% and a temperature of 70°C, the PLA precursor was taken out from the fabric, and its strength P3 was measured, and the ratio of P3 to P1 was calculated, that is, the strength retention rate, and the strength retention rate was 65 %.

[0018] ...

Embodiment 3

[0020] The polylactic acid fiber that contains 1.5% weight polycarbodiimide antihydrolysis agent is made knitted fabric, cuts a piece of fabric, extracts a PLA (polylactic acid fiber) precursor from it and measures its strength P1, in addition the knitted fabric made After the fabric was heated in water at 120°C for 30 minutes, a PLA (polylactic acid fiber) precursor was taken out from the fabric to measure its strength P2, and the ratio of P2 to P1, that is, the strength retention rate, reached 75%. The fabric can be dyed under this condition (heating in water at 120°C for 30 minutes).

[0021] The anti-hydrolysis agent carbodiimide is a monomer or a polymer with a molecular weight above 10,000. The polylactic acid in the polylactic acid fiber constituting the fabric has a molecular weight of more than 100,000.

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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PUM

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Abstract

The invention discloses a fabric containing polylactic acid fibre. The fabric has hydrolysis resistance; after the fabric is treated for 30 minutes at a temperature of 120 DEG C, a strength retention rate of polylactic acid fibre protofilament drawn out from the fabric is between 90 and 60 percent, relative to an initial strength of protofilament. The fabric (including woven fabric and knitted fabric) has obvious hydrolysis resistance performance, can be dyed at a high temperature and a high pressure; a strength of filament can not be substantially reduced, thereby effectively solving the problems that the polylactic acid fibre is difficult to dye; and the fabric can be dyed with various colors.

Description

Technical field: [0001] The invention relates to a fabric of polylactic acid fiber with hydrolysis resistance. Background technique: [0002] The oil resources on the earth are limited and will be exhausted one day. Traditional polyester fibers can no longer meet people's needs, so it is necessary to develop natural fibers that do not rely on petroleum. In recent years, with the improvement of people's living standards and the enhancement of environmental protection awareness, people pay more and more attention to the research of natural biodegradable fibers. Countries all over the world are competing to research and develop new green environmental protection fibers. The polylactic acid fiber (PLA fiber) that has realized industrialization development is the most eye-catching. Polylactic acid fiber can be obtained from grains, fermented by cornstarch to obtain lactic acid, then polymerized to obtain polylactide, and finally to obtain polylactic acid by ring opening. Moreo...

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 Patents(China)
IPC IPC(8): D03D15/00D01F1/10D03D15/283D03D15/50
Inventor 戴家欣施泽顺佐藤正幸
Owner TORAY IND INC
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