Stiff and broad PBST and polylactic acid composite fiber, preparation method and application thereof and surgical garment

A polylactic acid fiber and composite fiber technology, which is used in clothing, clothing features, and conjugated synthetic polymer rayon, etc., can solve the problems of limited application of PBST, low price, and cost reduction.

Pending Publication Date: 2022-02-08
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high cost of polylactic acid fiber often limits its application in a wider range of occasions, such as medical gowns, medical surgical gowns, etc., and it is necessary to reduce costs
Poly(butylene succinate-co-terephthalate) (Poly(butylene succinate-co-terephthalate), PBST) is as a kind of good biodegradable material, and price is lower, but prior art is for the PBST The application is more limited

Method used

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  • Stiff and broad PBST and polylactic acid composite fiber, preparation method and application thereof and surgical garment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Preparation of PLA slices:

[0050] Weigh the polylactic acid, put it into a high-speed mixer, add a matting agent in an amount of 0.5% of the mass of the polylactic acid, stir at a low speed for 3 minutes, take it out, and set aside.

[0051] Put the mixed material above into the main feeding port of a twin-screw extruder with a length-to-diameter ratio of 42:1, melt and extrude to pelletize, and the extruded material is cooled, air-dried, pelletized, and dried to obtain semi-dullness polylactic acid.

[0052] The matting agent is titanium dioxide, the purity is 99.9%, the type is rutile, and the particle size is 50nm. Polylactic acid, white particles, weight average molecular weight 70000.

[0053] The temperature setting value of the twin-screw extruder is the temperature of each zone: the temperature of the first zone: 165°C, the temperature of the second zone: 180°C, the temperature of the third zone: 190°C, the temperature of the fourth zone: 200°C, the temperat...

Embodiment 2

[0060] Preparation of PLA slices:

[0061] Weigh the polylactic acid, put it into a high-speed mixer, add a matting agent in an amount of 0.5% of the mass of the polylactic acid, stir at a low speed for 3 minutes, take it out, and set aside.

[0062] Put the mixed material above into the main feeding port of a twin-screw extruder with a length-to-diameter ratio of 42:1, melt and extrude to pelletize, and the extruded material is cooled, air-dried, pelletized, and dried to obtain semi-dullness polylactic acid.

[0063] The matting agent is titanium dioxide, the purity is 99.9%, the type is rutile, and the particle size is 50nm. Polylactic acid, white particles, weight average molecular weight 70000.

[0064] The temperature setting value of the twin-screw extruder is the temperature of each zone: the temperature of the first zone: 165°C, the temperature of the second zone: 180°C, the temperature of the third zone: 190°C, the temperature of the fourth zone: 200°C, the temperat...

Embodiment 3

[0071] Preparation of PLA slices:

[0072] Weigh the polylactic acid, put it into a high-speed mixer, add a matting agent in an amount of 0.5% of the mass of the polylactic acid, stir at a low speed for 3 minutes, take it out, and set aside.

[0073] Put the mixed material above into the main feeding port of a twin-screw extruder with a length-to-diameter ratio of 42:1, melt and extrude to pelletize, and the extruded material is cooled, air-dried, pelletized, and dried to obtain semi-dullness polylactic acid.

[0074] The matting agent is titanium dioxide, the purity is 99.9%, the type is rutile, and the particle size is 50nm. Polylactic acid, white particles, weight average molecular weight 70000.

[0075] The temperature setting value of the twin-screw extruder is the temperature of each zone: the temperature of the first zone: 165°C, the temperature of the second zone: 180°C, the temperature of the third zone: 190°C, the temperature of the fourth zone: 200°C, the temperat...

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Abstract

The invention provides a stiff and broad PBST and polylactic acid composite fiber as well as a preparation method and application thereof, and belongs to the technical field of composite fibers. The composite fiber comprises PBST fiber and polylactic acid fiber, after the composite fiber is formed, the PBST fiber is a skin layer of the composite fiber, and the polylactic acid fiber is a core layer of the composite fiber. The preparation method comprises the following steps that PBST slices and polylactic acid slices are obtained respectively; and composite spinning is conducted on the stiff PBST slices and the polylactic acid slices, so that the stiff PBST fibers are located on the skin layer of the composite fibers, the polylactic acid fibers form the core layer of the composite fibers, and the stiff PBST and polylactic acid composite fibers are obtained. The composite fiber can be better suitable for disposable surgical garments and can be completely biodegraded, and after the composite fiber is discarded, garbage cannot be generated, and the environment cannot be affected at all.

Description

technical field [0001] The invention relates to the technical field of composite fibers, in particular to a composite fiber of stretchy PBST and polylactic acid, its preparation method and application. Background technique [0002] The materials currently used in clothing, including underwear, outerwear, etc., include polylactic acid, which is non-polluting during the production process, and the product can be biodegraded to achieve recycling in nature. Therefore, it is an ideal green polymer material with low cost and has been used It realizes large-scale production and is widely used in the preparation of biodegradable fibers, films, and plastic products. It has a wide range of uses and can be used as packaging materials, fibers, and nonwovens. However, the high cost of polylactic acid fibers often limits its application in a wider range of occasions, such as medical gowns, medical surgical gowns, etc., and it is necessary to reduce costs. Poly(butylene succinate-co-terep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01D5/12C08G63/78C08G63/183A41D13/12A41D31/04
CPCD01F8/14C08G63/78C08G63/183A41D13/12A41D31/04D01D5/12A41D2400/52
Inventor 刘伯林金剑金小培钟淑芳邱志成赵晓婷
Owner CHINESE TEXTILE ACAD
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