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Multifunctional polylactic acid (PLA) fiber and preparation method thereof

A multi-functional, polylactic acid technology, applied in fiber processing, fiber chemical characteristics, stretch spinning, etc., can solve the problem of less PLA fiber functionalized products, and achieve the effect of low cost and simple preparation method

Active Publication Date: 2013-02-20
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to develop a multifunctional PLA fiber and provide a method for preparing multifunctional PLA fiber in order to solve the problem that there are few functionalized products of the existing PLA fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 10 grams of silicon dioxide (0.05g / mL, particle size 30nm) and add it to an ethanol solution with a volume concentration of 60%, stir and ultrasonically oscillate for 30 minutes, heat to 80°C, add KH560 (volume concentration is 2%), reacted at constant temperature for 4 hours, then filtered, washed, and dried to obtain KH560 modified silica;

[0028] (2) Dry PLA in a vacuum oven at 70°C for 24 hours, weigh 90 parts of dry PLA, 1.0 parts of KH560 modified silica, and 5 parts of 2-hydroxy-4-n-zincoxybenzophenone , put 4 parts of anti-mosquito agent dichlorodiphenyltrichloroethane into a high-speed mixer for 3 minutes, and then blend and granulate in a twin-screw blender to obtain PLA functional masterbatches. The granulation temperature is 170°C. The rotating speed is 75rmp, and the melt blending time is 5 minutes;

[0029] (3) The functional masterbatch is spun through four-lobed spinneret holes on a melt spinning machine to form multi-functional PLA primary f...

Embodiment 2

[0032] (1) Weigh 10 grams of cerium oxide (0.06g / mL, particle size is 50nm) and add it to an ethanol solution with a volume concentration of 80%, stir and ultrasonically vibrate for 45 minutes, heat and stir to 85°C, add KH560 (volume concentration is 3%), reacted at constant temperature for 5 hours, then filtered, washed, and dried to obtain KH560 modified ceria;

[0033] (2) Dry PLA in a vacuum oven at 75°C for 15 hours under vacuum, weigh 88 parts of dry PLA, 2 parts of KH560 modified cerium oxide, 2-(2'-hydroxyl-3',5'-tert 5 parts of butylphenyl)-5-chlorobenzotriazole, 5 parts of anti-mosquito agent dichlorodiphenyltrichloroethane were put into a high-speed mixer and mixed for 3 minutes, and then blended in a twin-screw blender Granulation to obtain PLA functional masterbatch, the granulation temperature is 175°C, the rotation speed is 100rmp, and the melt blending time is 4 minutes;

[0034] (3) The functional masterbatch is spun through the three-lobed spinneret hole on...

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Abstract

The invention discloses a multifunctional polylactic acid (PLA) fiber and a preparation method thereof. The multifunctional PLA fiber comprises the following components in parts by weight: 87-98.5 of PLA, 0.5-3.0 of coupling agent modified ultraviolet resistant inorganic nanometer particle, 0.5-8 of organic ultraviolet light absorber and 0.5-8 of anti-mosquito agent dichloro diphenyl trichloroethane. The preparation method of the multifunctional PLA fiber comprises the steps of: (1) weighing the PLA, the ultraviolet resistant inorganic nanometer particle, the organic ultraviolet light absorber and the anti-mosquito agent according to the proportion, premixing and carrying out granulation via melt blending to obtain a functional master batch of the PLA, (2) carrying out spinning on the functional master batch of the PLA through a special-shape spinneret orifice on a melt spinning machine to obtain a PLA nascent fiber, and (3) drafting the nascent fiber to obtain the multifunctional PLA fiber. The obtained PLA fiber has the functions of resisting ultraviolet rays, preventing mosquitoes and guiding moisture, and can be used as a raw material for functional textiles.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to multifunctional (anti-ultraviolet radiation, anti-mosquito and moisture-conducting) polylactic acid (PLA) fibers and a preparation method thereof. Background technique [0002] my country is a big country of fiber production. The output of synthetic fiber has ranked first in the world for 15 consecutive years. The total value of fiber and its textiles accounts for about 10% of my country's GDP, and exports account for 1 / 4, which is very important in the national economy. At present, the development of chemical fibers in China has the following problems: First, the development of synthetic fibers is restricted by the shortage of resources. More than 90% of the raw materials of synthetic fibers depend on oil, and the total amount of proven oil and the consumption rate are calculated , 50 years later, fiber and its related industries will be in a state of "cooking without rice"; secon...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01D13/00D01D5/253D01D5/12
Inventor 刘庆生邓炳耀
Owner JIANGNAN UNIV
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