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Preparation method of high-hygroscopicity polylactic acid fiber used for surgical drapes

A technology of polylactic acid fiber and polylactic acid resin, which is applied in the field of polylactic acid fiber preparation for surgical drapes, can solve the problems of polylactic acid fiber fabrics that are not resistant to high temperature, poor hygroscopicity, and affect the popularization and application of polylactic acid fiber fabrics, and achieve moisture absorption effect Good, good heat resistance effect, excellent effect of high temperature resistance

Inactive Publication Date: 2018-06-08
HEFEI C&P NONWOVEN PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, polylactic acid fiber fabrics are not resistant to high temperature and have poor hygroscopicity, which seriously affects the popularization and application of polylactic acid fiber fabrics in surgical drapes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing polylactic acid fiber for surgical drapes with good moisture absorption effect, comprising the following steps:

[0020] S1. Heat 220kg of liquid paraffin, 60kg of ammonia water, and 4kg of oil-soluble emulsifier to 90°C and stir evenly. Add 45kg of gelatin under stirring. The stirring speed is 14000r / min. Continue to stir for 8 minutes, cool down to 8°C, and let stand for 4 hours. , add 40kg tetrabutyl titanate and stir for 2h, the stirring speed is 340r / min, filter, and wash with petroleum ether and absolute ethanol in turn to obtain the first material;

[0021] S2. Stir 80kg of polylactic acid resin and 20kg of the first material for 60min at a stirring speed of 800r / min to obtain the second material;

[0022] S3. Raise the temperature of 140kg of the second material to 130°C, add 10kg of sepiolite powder, 8kg of zeolite powder, 2kg of dioctyl phthalate, 0.6kg of dibutyltin dilaurate, 4kg of oxidized polyethylene wax, and 0.8kg of cardanol poly...

Embodiment 2

[0024] A method for preparing polylactic acid fiber for surgical drapes with good moisture absorption effect, comprising the following steps:

[0025] S1. Heat 220kg of liquid paraffin, 60kg of ammonia water, and 4kg of oil-soluble emulsifier to 90°C and stir evenly. Add 45kg of gelatin under stirring. The stirring speed is 14000r / min. Continue to stir for 8 minutes, cool down to 8°C, and let stand for 4 hours. , add 40kg tetrabutyl titanate and stir for 2h, the stirring speed is 340r / min, filter, and wash with petroleum ether and absolute ethanol in turn to obtain the first material;

[0026] S2. Stir 80kg of polylactic acid resin and 20kg of the first material for 60min at a stirring speed of 800r / min to obtain the second material;

[0027] S3. Heat up 120kg of the second material to 150°C, add 4kg of sepiolite powder, 16kg of zeolite powder, 1kg of dioctyl phthalate, 1.4kg of dibutyltin dilaurate, 2kg of oxidized polyethylene wax, and 1.6kg of cardanol polyphenols. Oxyethy...

Embodiment 3

[0029] A method for preparing polylactic acid fiber for surgical drapes with good moisture absorption effect, comprising the following steps:

[0030] S1. Heat 230kg of liquid paraffin, 55kg of ammonia water, and 5kg of oil-soluble emulsifier to 88°C and stir evenly. Add 48kg of gelatin under stirring. The stirring speed is 13700r / min. Continue to stir for 9 minutes, cool down to 7°C, and let stand for 5 hours. , add 37kg of tetrabutyl titanate and stir for 2.5h at a stirring speed of 320r / min, filter, and wash with petroleum ether and absolute ethanol in turn to obtain the first material;

[0031] S2. Stir 85kg of polylactic acid resin and 18kg of the first material for 65min at a stirring speed of 750r / min to obtain the second material;

[0032] S3. Heat up 125kg of the second material to 145°C, add 6kg of sepiolite powder, 14kg of zeolite powder, 1.2kg of dioctyl phthalate, 1.2kg of dibutyltin dilaurate, 2.5kg of oxidized polyethylene wax, and 1.4kg of cashew nuts Phenol p...

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Abstract

The invention discloses a preparation method of high-hygroscopicity polylactic acid fiber used for surgical drapes. The preparation method comprises following steps: liquid paraffin, ammoniacal liquor, and an oil soluble emulsifier are heated and stirred to be uniform, gelatin is added with stirring, continuous stirring is carried out, an obtained mixture is cooled, and is allowed to stand, tetrabutyl titanate is added for stirring, filtering, and washing so as to obtain a first material; polylactic acid resin and the first material are stirred so as to obtain a second material; the second material is heated, meerschaum, zeolite powder, dicapryl phthalate, dibutyltin dilaurate, oxidized polyethylene wax, cashew phenol polyoxyethylene ether, a color master batch, epoxy soybean oil, and an anti-oxidant are added, extrusion is carried out, an obtained mixture is cooled to room temperature, and melt spinning is carried out so as to obtain the high-hygroscopicity polylactic acid fiber usedfor surgical drapes. The polylactic acid fiber is excellent in hygroscopicity, heat resistance, high temperature resistance, and is high in mechanical strength and comfortableness, is green, is friendly to the environment, is degradable, and is suitable to be used for preparing surgical drapes.

Description

technical field [0001] The invention relates to the technical field of surgical drapes, in particular to a method for preparing polylactic acid fibers for surgical drapes with good moisture absorption effect. Background technique [0002] In recent years, research on biodegradable polymer materials has become increasingly active. Polylactic acid fibers have attracted much attention due to their biodegradability and rapid cycle of growth and decline in nature. Polylactic acid fiber belongs to aliphatic polyester in chemical structure and is a brand new textile fiber. Polylactic acid fiber is made from corn, wheat and other starch raw materials through fermentation, polymerization, and spinning. It has superior performance. Surgical drapes made of polylactic acid fiber are comfortable, elastic, hygroscopic and heat-resistant. it is good. [0003] However, polylactic acid fiber fabrics are not resistant to high temperatures and have poor hygroscopicity, which seriously affect...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/18D01F8/02D01F8/06D01F8/16D01F1/10
Inventor 张德满
Owner HEFEI C&P NONWOVEN PROD
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