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High-temperature-resistant polylactic acid fibers and preparation method thereof

A technology of polylactic acid fiber and high temperature resistance, applied in the direction of fiber chemical characteristics, rayon manufacturing, conjugated synthetic polymer rayon, etc., can solve the problem of limited application, poor ironing performance of fabrics, and easy melting and sticking on the surface of fabrics, etc. question

Active Publication Date: 2020-06-02
安徽丰原生物纤维股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, while polylactic acid material has the above natural characteristics, it also has the disadvantages of low melting point and poor high temperature resistance, which limits its application in fibers, films and plastics.
These shortcomings make polylactic acid fibers, yarns and fabrics unable to be dyed by conventional dyeing techniques, and the ironing performance of the fabrics is poor, so they can only be ironed at low temperatures. When ironing at medium or high temperatures, the surface of the fabrics is prone to melting Sticking, shrinkage, cracking and other phenomena, and the texture of the fabric will also become hard; due to the low melting point, it is very sensitive to temperature, polylactic acid products are difficult to process, and its film products cannot be used to hold, cover, and package high-temperature items; in plastic products , when used as a packaging container, it cannot be used for lunch boxes, soup bowls, tea cups and other containers that need to be used under high temperature conditions, and it is not suitable for containers heated in microwave ovens; and in engineering plastics, it is because of its poor temperature resistance. It limits its application in automotive interior parts, household appliance casings and spare parts, electronic appliances, etc.

Method used

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  • High-temperature-resistant polylactic acid fibers and preparation method thereof
  • High-temperature-resistant polylactic acid fibers and preparation method thereof
  • High-temperature-resistant polylactic acid fibers and preparation method thereof

Examples

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Effect test

Embodiment 1

[0075] The preparation of embodiment 1 high temperature resistant polylactic acid fiber (1)

[0076] This embodiment provides a high-temperature-resistant polylactic acid fiber, which is prepared from raw materials comprising the following components:

[0077] (1) Poly L-lactic acid: 60 parts;

[0078] (2) Poly D-lactic acid: 40 parts;

[0079] (3) Antioxidant 1076: 0.1 part;

[0080] (4) Chain extender ADR4368 (compatibilizer): 0.2 parts;

[0081] (5) Tributyl citrate: 1 part.

[0082] This embodiment also provides a preparation method for the above-mentioned high-temperature-resistant polylactic acid fiber, which specifically includes the following steps:

[0083] 1. Blending and granulation: Accurately measure each raw material component according to the weight part, then fully mix the components (1)-(4) and send them to a vacuum drum dryer for 12 hours at 70°C, and detect that the moisture content of the material is 94ppm; then The added component (5) is fully mixed a...

Embodiment 2

[0088] The preparation of embodiment 2 high temperature resistant polylactic acid fibers (2)

[0089] This embodiment provides a high-temperature-resistant polylactic acid fiber, which is prepared from raw materials comprising the following components:

[0090] (1) Poly L-lactic acid: 65 parts;

[0091] (2) Poly D-lactic acid: 35 parts;

[0092] (3) Antioxidant 1010: 0.2 parts;

[0093] (4) Chain extender ADR4368 (compatibilizer): 0.3 parts;

[0094] (5) Tributyl citrate: 2 parts.

[0095] This embodiment also provides a preparation method for the above-mentioned high-temperature-resistant polylactic acid fiber, which specifically includes the following steps:

[0096] 1. Blending and granulation: Accurately measure each raw material component according to the weight part, then fully mix the components (1)-(4) and send them to a vacuum drum dryer for 11 hours at 80°C, and the moisture content of the material is 93ppm; then The added component (5) is fully mixed and sent t...

Embodiment 3

[0101] The preparation of embodiment 3 high temperature resistant polylactic acid fibers (3)

[0102] This embodiment provides a high-temperature-resistant polylactic acid fiber, which is prepared from raw materials comprising the following components:

[0103] (1) Poly L-lactic acid: 75 parts;

[0104] (2) Poly D-lactic acid: 25 parts;

[0105] (3) Antioxidant 1010: 0.2 parts;

[0106] (4) Chain extender ADR4380 (compatibilizer): 0.4 parts;

[0107] (5) Acetyl tributyl citrate: 3 parts.

[0108] This embodiment also provides a preparation method for the above-mentioned high-temperature-resistant polylactic acid fiber, which specifically includes the following steps:

[0109] 1. Blending and granulation: Accurately measure each raw material component according to the weight part, then fully mix the components (1)-(4) and send them to a vacuum drum dryer at 90°C for 10 hours, and check that the moisture content of the material is 95ppm, and then The added component (5) is fu...

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Abstract

The invention provides high-temperature-resistant polylactic acid fibers and a preparation method thereof. The high-temperature-resistant polylactic acid fibers are prepared from the raw materials including poly(L-lactic acid), poly(D-lactic acid) and auxiliaries, and the auxiliaries include an antioxidant, a chain extender and a plasticizer. The poly(L-lactic acid) and the poly(D-lactic acid) aresubjected to stereo compounding and melt spinning to prepare the polylactic acid fibers with the excellent high-temperature-resistant performance, the melting point of the polylactic acid fibers is remarkably improved, the heat shrinkage rate and the boiling water shrinkage rate are remarkably reduced, a fabric prepared by spinning and weaving is good in dimensional stability, and meanwhile, thetemperature sensitivity of yarns and the fabric in dyeing is greatly reduced, so that the dyeing difficulty is reduced. The preparation method of the high-temperature-resistant polylactic acid fibersprovided by the invention is simple in process flow, convenient to operate and suitable for wide popularization and application.

Description

technical field [0001] The invention relates to the technical field of polylactic acid fiber preparation, in particular to a high-temperature-resistant polylactic acid fiber and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) is a polymer material synthesized from agricultural crops (corn, potato, sweet potato, etc.) through a special polymerization reaction of lactic acid products obtained through bio-fermentation technology. Its raw materials have a wide range of sources and are renewable. Traditional plastics and chemical fibers are dependent on petroleum resources. Polylactic acid material has natural excellent characteristics such as environmental protection, non-toxic, skin-friendly, flame retardant, anti-allergic, non-moisture, antibacterial and anti-mite. Polylactic acid materials can be completely biodegraded and finally decomposed into carbon dioxide and water. Therefore, it can solve the serious ecological and environmental probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F1/10
CPCD01F8/14D01F1/10Y02W90/10
Inventor 李荣杰陈中碧冯杰杨阳谢贤勇操乐发周廷保单勇何玉春
Owner 安徽丰原生物纤维股份有限公司