Biodegradable non-woven fabric and preparation method thereof

A biodegradable, non-woven technology, used in non-woven fabrics, textiles and papermaking, etc., can solve the problem of not many reports, and achieve the effects of good flexibility, low energy consumption, and excellent filtration efficiency.

Inactive Publication Date: 2015-06-10
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, there are not many related reports on PBAT non-woven fabrics and their production methods. Most of them are blending PBAT with other polymer materials to prepare non-woven fabrics to improve the properties of blended materials.

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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  • Biodegradable non-woven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Dry poly(butylene adipate / terephthalate) (PBAT) particles with a number average molecular weight of 30,000 in vacuum at 60°C for 48 hours so that the moisture content is <100ppm;

[0029] Then the dried PBAT particles are heated by a screw extruder, the melting temperature is 200°C, and extruded into a melt. sec, the temperature is 190 ° C high-pressure hot air injection, the PBAT polyester melt is stretched into ultra-fine fibers, condensed on the drum receiver with a distance of 5 cm from the nozzle, and the drum speed of the receiver is 20r / min, automatically Bonded into a non-woven fabric, after cooling, the non-woven fabric was removed from the drum with a blade and placed in a drying oven to dry and shape. The setting temperature was 80°C, and the setting time was 20 hours. The biodegradable non-woven fabric was obtained.

Embodiment 2

[0031] Dry poly(butylene adipate / terephthalate) (PBAT) particles with a number average molecular weight of 50,000 in vacuum at 70°C for 40 hours, so that the moisture content is <100ppm;

[0032] Then the dried PBAT particles are heated by a screw extruder with a melting temperature of 220°C and extruded into a melt. sec, the temperature is 250 ° C high-pressure hot air injection, the PBAT polyester melt is stretched into ultra-fine fibers, condensed on the drum receiver 10cm away from the nozzle, the drum speed of the receiver is 25r / min, automatic Bonded into a non-woven fabric, after cooling, the non-woven fabric was removed from the drum with a blade and placed in a drying oven for drying and setting. The setting temperature was 85°C and the setting time was 15 hours. The obtained biodegradable non-woven fabric was obtained.

Embodiment 3

[0034] Dry poly(butylene adipate / terephthalate) (PBAT) particles with a number average molecular weight of 55,000 in vacuum at 80°C for 36 hours so that the moisture content is <100ppm;

[0035] Then the dried PBAT particles are heated by a screw extruder, the melting temperature is 240°C, and extruded into a melt. sec, the temperature is 270 ° C high-pressure hot air injection, the PBAT polyester melt is stretched into ultra-fine fibers, condensed on the drum receiver 20cm away from the nozzle, the drum speed of the receiver is 27r / min, automatic Bonded into a non-woven fabric, after cooling, remove the non-woven fabric from the drum with a blade and put it in a drying oven to dry and shape. The setting temperature is 90 ° C, and the setting time is 10 hours. The obtained biodegradable non-woven fabric.

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Abstract

The invention belongs to the field of high polymer material application, and discloses a biodegradable non-woven fabric and a preparation method thereof. The biodegradable non-woven fabric is prepared from biodegradable poly (butyleneadipate-co-terephthalate) (PBAT) through a melt blowing process. The non-woven fabric is pollution-free, few in processing link and easy to operate. The non-woven fabric has biodegradability, is good in softness, strong in comfortable feeling, and has an excellent mechanical property, the longitudinal tensile strength can reach 16 MPa, and the longitudinal elongation rate reaches more than 200%. The non-woven fabric is prepared by the melt blowing method, fiber of the non-woven fabric is smaller in diameter, and the obtained non-woven fabric has the advantages of large specific surface area, high porosity, excellent filtering efficiency and the like. The non-woven fabric can be widely applied to fields such as medical and industrial masks, thermal insulation materials, filtering materials, medical and health materials, oil absorption materials, wiping cloth, battery separators and sound insulation materials.

Description

technical field [0001] The invention belongs to the application field of polymer materials, and relates to a biodegradable non-woven fabric and a preparation method thereof. Background technique [0002] Non-woven fabric, also known as non-woven fabric, is composed of directional or random fibers, and has the characteristics of moisture-proof, breathable, flexible, light, easy to decompose, non-toxic, and non-irritating. The use of melt-blown method to make melt-blown non-woven fabric is a new promising new technology, which has the advantages of advanced technology, short process and low cost. Especially in recent years, with the rapid development of industry and environmental protection Strengthening, the market demand for melt-blown non-woven fabrics is increasing. [0003] Polybutylene adipate / terephthalate (PBAT) is a ternary copolyester polymerized from terephthalic acid, adipic acid and 1,4-butanediol. A new type of biodegradable material. PBAT contains flexible al...

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): D04H1/55D04H1/56
Inventor 杨桂生严莉莉
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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