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Degradable fiber and preparation method thereof

A technology for degrading fiber and butylene adipate, which is applied in the field of degradable fiber and its preparation, can solve the problems of limiting the application of polylactic acid, increasing processing steps, and poor thermal stability, so as to maintain degradability and improve compatibility properties, improving mechanical properties

Active Publication Date: 2015-04-15
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its low melting point and poor thermal stability limit the application of polylactic acid in films, fibers and plastics.
[0005] Chinese patent 201110102009.X introduces a degradable fiber containing PHBV and its preparation method. The mixture of PHBV and binary mixture containing polylactic acid is spun to prepare a degradable fiber with excellent performance. However, this method needs to prepare the degradable fiber containing Blends of polylactic acid with increased processing steps
However, due to the poor compatibility of PBAT and PLA, its blend requires a higher temperature for spinning

Method used

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  • Degradable fiber and preparation method thereof
  • Degradable fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Vacuum-dry the PBAT and PLA particles, and the water content is less than 200ppm;

[0033] (2) 60 parts of PBAT, 40 parts of PLA, 0.5 parts of compatibilizer (GMA), 0.2 parts of nucleating agent (calcium stearate), 0.2 parts of antioxidant (2,6- Di-tert-butyl-4-methylphenol) are blended, melt-spun through a screw-type spinning machine, and after cooling, oiling, pre-drawing, and winding are carried out to obtain a uniform structure and controllable fineness. fiber. Wherein, the spinning temperature is 240°C, and the spinning speed is 500m / min;

[0034] (3) Drawing the fiber obtained in step (2) at a processing ratio of 1.5, a winding speed of 300m / min, and a processing temperature of 60°C to obtain a drawn filament.

Embodiment 2

[0036] (1) Vacuum-dry the PBAT and PLA particles, and the water content is less than 200ppm;

[0037] (2) After drying in step (1), 70 parts of PBAT, 25 parts of PLA, 4 parts of compatibilizer (ATBC), 1 part of nucleating agent (titanium dioxide), 0.8 parts of antioxidant (2,6-ditertiary Butyl-4-methylphenol) are blended, melt-spun by a screw-type spinning machine, and after cooling, oiling, pre-drawing, and winding are performed to obtain primary fibers with uniform structure and controllable denier. Wherein, the spinning temperature is 220°C, and the spinning speed is 800m / min;

[0038] (3) The fibers obtained in step (2) are drawn at a processing ratio of 2.1, a winding speed of 500 m / min, and a processing temperature of 80° C. to obtain drawn filaments.

Embodiment 3

[0040] (1) Vacuum-dry the PBAT and PLA particles, and the water content is less than 200ppm;

[0041] (2) 80 parts of PBAT, 15 parts of PLA, 2 parts of compatibilizer (AX8900), 2 parts of nucleating agent (calcium carbonate), 1 part of antioxidant (β-(3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate) for blending, melt spinning through a screw-type spinning machine, after cooling, oiling, pre-drawing, winding After treatment, the as-spun fibers with uniform structure and controllable fineness can be obtained. Wherein, the spinning temperature is 205°C, and the spinning speed is 1500m / min;

[0042] (3) Drawing the fiber obtained in step (2) at a processing ratio of 2.5, a winding speed of 600m / min, and a processing temperature of 100°C to obtain a drawn filament.

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Abstract

Belonging to the technical field of high polymer materials, the invention relates to a degradable fiber and a preparation method thereof. The degradable fiber material is prepared from the following components by weight: 60-90 parts of poly(butylene adipate / terephthalate), 10-40 part of polylactic acid, 0.5-6 parts of a compatibilizer, 0.2-5 parts of a nucleating agent, and 0.2-2 parts of an antioxidant. Compared with the prior art, the degradable fiber provided by the invention has good melting spinnability under a low spinning temperature of 170-240DEG C and a high spinning speed of 500-2000m / min, and can crystallize in later spinning and treatment processes, so that the fiber can have high mechanical strength and lasting and steady soft handfeel, and can satisfy the use requirements so as to expand application fields.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a degradable fiber and a preparation method thereof. Background technique [0002] Chemical fiber has become an indispensable and huge amount of chemical products in people's daily life, industrial and agricultural production. Traditional chemical fibers mainly use petroleum-based polymers as raw materials, and rely heavily on non-renewable resource petroleum, and the waste of traditional chemical fibers is usually not easy to degrade, which brings a burden to the ecological environment. Therefore, to prepare a degradable The fiber has important practical significance. [0003] Polybutylene adipate / terephthalate (PBAT) is a ternary copolyester polymerized from terephthalic acid, adipic acid and 1,4-butanediol. It has been researched at home and abroad in recent years. A new type of biodegradable material. PBAT contains flexible aliphatic chains and rigid aromatic bonds...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F1/10
Inventor 杨桂生严莉莉
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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