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Tail end-capped polylactic acid fiber with high heat resistance and water resistance and preparation method thereof

A polylactic acid fiber, polylactic acid technology, applied in the direction of melt spinning, single-component polyester rayon, etc., can solve the problems of no friction resistance improvement, polylactic acid water resistance can not be improved, etc., to improve friction resistance. good abrasion resistance, improve the effect of a wide range of applications

Inactive Publication Date: 2014-01-01
SUZHOU LONGJIE SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are very few examples of adding anti-hydrolysis agents and lubricants to PLA fibers at the same time. For example, it is reported in the patent (application number 03820140.2) applied by Japan Toray Co., Ltd. in China. 0.1-5% by weight of fatty acid diamide and / or alkyl substituted fatty acid monoamide can improve the friction resistance of polylactic acid after adding, but the water resistance of polylactic acid cannot be improved
Another example is the report in Japanese Patent Application No. 11-80522 applied by Nisshin Textile Co., Ltd., this technology is to add polycarbodiimide group in the polylactic acid fiber, after adding, the resistance to adding water of polylactic acid has been improved, but No improvement in friction resistance

Method used

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  • Tail end-capped polylactic acid fiber with high heat resistance and water resistance and preparation method thereof
  • Tail end-capped polylactic acid fiber with high heat resistance and water resistance and preparation method thereof
  • Tail end-capped polylactic acid fiber with high heat resistance and water resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The polylactic acid slices are vacuum-dried until the water content is 100ppm, and the dried polylactic acid slices are mixed with 10% polycarbodiimide compound Stabaxol P200 (Germany Rheinland company product) equivalent to the weight of the polylactic acid and an amount equivalent to the weight of the polylactic acid. 7.5% EBS (ethylene bis stearamide, its melting point is 144 DEG C) mixed evenly, melt blending, extruding granulation with a twin-screw extruder, the extrusion temperature is 200 DEG C, the screw speed is 250rpm, obtained Masterbatch slices. Then the masterbatch slices are dried to make the masterbatch slice moisture reach 120ppm, then the dried polylactic acid slices 60% by weight and the masterbatch slices by 40% by weight are prepared through melt spinning, and the concentration is 15% spinning oil emulsion is coated on the fiber, and the spinning oil emulsion is by containing 40% weight fatty acid ester lubricant (20% weight isotridecyl stearate+20% ...

Embodiment 2

[0037] The polylactic acid slices are vacuum-dried until the moisture content is 80ppm, and the dried polylactic acid slices are mixed with 12% polycarbodiimide compound Stabaxol P200 (Germany Rheinland company product) equivalent to the weight of polylactic acid and equivalent to the weight of polylactic acid. 10% EBS (ethylene bis stearamide, its fusing point is 144 DEG C) mixed evenly, melt blending, extrusion granulation with twin-screw extruder, extrusion temperature is 190 DEG C, screw speed is 300rpm, obtained Masterbatch slices. Then the masterbatch slices are dried to make the masterbatch slice moisture reach 100ppm, and then the dried polylactic acid slices 65% by weight and the masterbatch slices by 35% by weight are prepared through melt spinning, and the concentration is 15% spinning oil emulsion is coated on the fiber, and the spinning oil emulsion is by containing 40% weight fatty acid ester lubricant (20% weight isotridecyl stearate+20% weight Octyl palmitate)...

Embodiment 3

[0039]The polylactic acid slices are vacuum-dried until the moisture content is 120ppm, and the dried polylactic acid slices are mixed with 2% polycarbodiimide compound Stabaxol P200 (product of German Rheinland Co., Ltd.) equivalent to the weight of polylactic acid and equivalent to the weight of polylactic acid. 0.5% EBS (ethylene bis stearamide, its fusing point is 144 DEG C) components are uniformly mixed, melt blended, extruded, pelletized with a twin-screw extruder, the extrusion temperature is 200 DEG C, and the screw speed is 250rpm. Then the chips obtained are dried to make the moisture content of the chips reach 150ppm, prepared by melt spinning, and the spinning oil emulsion with a concentration of 15% is coated on the fiber by an oiling yarn guide, and the spinning oil emulsion is made of Containing 40% by weight of fatty acid ester lubricants (20% by weight of isotridecyl stearate+20% by weight of octyl palmitate) spinning oil mixed with water, so that the final oi...

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Abstract

The invention discloses a polylactic acid fiber which has high hydrolysis resistance and friction resistance. The polylactic acid fiber comprises a polylactic acid ingredient, wherein the group at the tail end of a polylactic acid molecular chain is capped, glycidyl ester is used as an epoxy capping agent, and the polylactic acid ingredient is mixed with fatty acid diamide and / or an alkyl substituted type fatty acid monoamide ingredient and a polycarbodiimide ingredient.

Description

Technical field: [0001] The invention relates to a novel polylactic acid fiber with high hydrolysis resistance and high friction resistance and a preparation method thereof. Background technique: [0002] In recent years, with the improvement of people's living standards and the enhancement of environmental protection awareness, people have paid 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, among which just realized in the late 1990s The industrially developed polylactic acid fiber (PLA fiber) is the most eye-catching. Polylactic acid (PLA) is a kind of aliphatic polyester polymer material that is completely degradable and environmentally friendly, and has excellent biocompatibility. It is decomposed by enzymes in the body, and can be completely decomposed in vitro under the action of microorganisms, water, acid, alkali, etc. The final prod...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01D5/08
Inventor 徐醒我关乐赵满才
Owner SUZHOU LONGJIE SPECIAL FIBER
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