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Method for preparing chitosan modified sizing agent used for sizing terylene super fine denier polyester filaments

A chitosan modification and ultra-fine denier technology is applied in the field of preparation of chitosan slurry, which can solve the problems of incompatibility with the properties of the slurry, complicated use of enzymes, and inability to be used as a slurry, and achieves easy sizing operation and adjustment. The effect of convenient pulp and simple preparation method

Inactive Publication Date: 2012-01-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, chitosan raw materials and products available in the market cannot be used as a size, because it does not meet the requirements of size performance, that is, the performance of sizing and desizing
[0009] Chitosan modified slurry, especially for polyester superfine multifilament weaving artificial blood vessel slurry, currently there are few relevant domestic documents, only in 2006, Donghua University Chen Yan et al. published in Textile Herald Research on biomodification of sizing performance when chitin is used as sizing material. The main research is to use enzymatic method to reduce viscosity and improve water solubility of chitin for textile sizing. The use of enzymes is relatively complicated and the performance is not stable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Prepare 450 milliliters of 0.6% sodium persulfate solution with a mass percentage concentration; weigh 16.67 grams of chitosan raw material, add 16.67 grams of chitosan into the sodium persulfate solution, add while stirring, and mix chitosan with the solution Evenly, take 25ml of glacial acetic acid liquid and add evenly, stir, the reaction system is sealed, with a reflux device, the reaction system is placed in a water bath and heated at a rate of 3°C per minute, to 90°C, heat preservation reaction for 5min., weigh chitosan Add 16.67 grams of raw material to the reaction solution, stir evenly, keep warm until the solution flows like water, and then weigh 16.66 grams of chitosan raw material, and add it to the reaction solution evenly; when the fluid viscosity of the chitosan solution is 8-16mPa.s , add 12.5 grams of 5% mass percent concentration sodium sulfite solution, cool down, cool the reaction system to 30 ° C, test the pH value, and use 10% mass percent concentrat...

Embodiment 2

[0037] The preparation mass percent concentration is 720 milliliters of 0.6% potassium persulfate solution stand-by; Take by weighing two parts of 40 grams of chitosan raw materials, add 40 grams of chitosan in the potassium persulfate solution, add while stirring, make chitosan Mix evenly with the solution, take 32 ml of glacial acetic acid liquid and add evenly, stir, the reaction system is sealed and has a reflux device, the reaction system is placed in a water bath and heated at a rate of 2°C per minute to 90°C, and kept for reaction. The water flows, add the second part of chitosan and stir evenly, heat preservation reaction, until the flow viscosity of the chitosan solution is 8-16mPa.s, add 20 grams of 5% mass percent sodium sulfite solution, cool down, and cool the reaction system to 30 ℃, test the pH value, with a mass percent concentration of 5% NaHCO 3 The solution adjusts the pH value of the reaction system solution to about 6; adds 4.8 grams of nonionic surfactant...

Embodiment 3

[0039] Preparation mass percent concentration is 920 milliliters of 0.4% ammonium persulfate solution stand-by; Take by weighing 80 grams of chitosan raw materials, be divided into three equal parts, every part of 26.67 grams is standby, 26.67 grams of chitosan is added in the ammonium persulfate solution, Add while stirring to mix chitosan with the solution evenly, take 30 ml of glacial acetic acid solution and add evenly, stir, the reaction system is sealed and has a reflux device, and the reaction system is placed in a water bath and heated at a rate of 3°C per minute to 90 ℃, heat preservation reaction, add the second portion of chitosan and stir evenly, heat preservation reaction until the solution flows like water, do the same until the chitosan is added, heat preservation reaction, until the flow viscosity of the chitosan solution is 8 ~ 16mPa.s, Add 25 grams of 5% mass percent concentration sodium sulfite solution, lower the temperature, cool the reaction system to 30°C...

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PUM

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Abstract

The invention relates to a method for preparing a chitosan modified sizing agent used for sizing terylene super fine denier polyester filaments. The method comprises the following steps of: (1) preparing persulfate solution; (2) adding chitosan into the persulfate solution to obtain a mixture; (3) adding glacial acetic acid liquid into the mixture, wherein the reaction system is refluxed in a closed mode and is placed in a water bath; heating the reaction system to the temperature of 90 DEG C; performing reaction by preserving heat; adding the chitosan; when the viscosity value is tested to be between 8 and 16 mPa.s, adding sodium sulfite solution; lowering the temperature to 30 DEG C; testing the pH value; regulating the pH value of reaction system solution to be 5 to 7 by using NaHCO3 solution; and adding a non-ionic surface active agent. The method is simple, has no pollution, and is suitable for industrial production; and the obtained chitosan modified sizing agent has the advantages of high adhesive force, high stability, convenient size mixing, and easy sizing operation.

Description

technical field [0001] The invention belongs to the field of preparation of chitosan slurry, in particular to a preparation method of chitosan modified slurry used for sizing polyester superfine denier filaments. Background technique [0002] During the weaving process of polyester fine denier filament (multifilament), due to the small number of fibers in the tow and poor strength, mechanical friction and friction of adjacent yarns will cause silk fiber breakage and entanglement, making weaving impossible. In order to smoothly process polyester ultra-fine denier filaments into vascular products, it is necessary to sizing the yarn. At present, there is no special size for polyester woven artificial blood vessels in China. Common size not only has the problem of unsuitable sizing performance, but also has the problem that desizing will affect the performance of artificial blood vessels. [0003] At present, there are many types of common pulp, mainly starch, polyvinyl alcohol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/03D06M101/32
Inventor 郭腊梅李毓林戴传彪李超胡娟
Owner DONGHUA UNIV
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