High strength viscose and preparation method thereof

A viscose fiber and high-strength technology, applied in the field of high-strength viscose fiber and its preparation, can solve the problems of affecting fiber performance, poor compatibility of cellulose molecules, cumbersome operation process, etc., achieve low manufacturing cost, improve compatibility, good physical performance

Active Publication Date: 2016-10-12
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the research on reinforced viscose fiber, many patents are involved. For example, Chinese patent CN101775671A discloses a high-strength viscose fiber and its production method, which is characterized in that the flake bacterial cellulose is pretreated and crushed by ball milling to obtain Nano-scale bacterial cellulose powder, and then mix it with viscose spinning solution to make high-strength viscose fiber, but the method is cumbersome and time-consuming, and is not suitable for mass production, and the bacterial cellulose The powder particles are mixed unevenly with the viscose spinning solution, which is easy to affect the performance of the fiber; Chinese patent CN103255488A discloses a method of using inorganic nano-whiskers or organic nano-whiskers to disperse through the dispersion liquid and blend with the viscose collagen solution to prepare high-strength fibers. The method of viscose f

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0009] A kind of preparation method (abbreviation preparation method) of high-strength viscose fiber of the present invention is characterized in that operating steps are as follows:

[0010] (1) Weigh a certain amount of melamine and paraformaldehyde in a three-necked flask with a molar ratio of 1:1.5-4.5, add an appropriate amount of distilled water, and heat up to 30-50°C under stirring conditions. After the solution is clarified, adjust The pH value is controlled at pH=7~9, the temperature is raised to 70~95°C, and the reaction is 30~60min;

[0011] (2) Cool down to 40-60°C, add one of p-phenylenediamine, phenol or resorcinol, react for 10-60 minutes, then add one of glutaraldehyde, adipic acid or polypropylene glycol 200, The temperature rises to 60-95°C, and the reaction takes 20-60 minutes;

[0012] (3) Cool down to 40-50°C, add organic titanium chelate TMC-TE, titanate coupling agent TMC-4 or isopropyl tris(dioctyl pyrophosphate acyloxy) titanate A kind of, blending ...

Example Embodiment

[0016] Example 1:

[0017] With a molar ratio of 1:1.5, weigh 126.12g of melamine and 45g of paraformaldehyde in a three-necked flask, add 256.68g of distilled water, and raise the temperature to 30°C under stirring. After the solution is clarified, adjust the pH value with sodium hydroxide solution , control at pH=9, heat up to 70°C, react for 60min; cool down to 40°C, add 94.11g of phenol according to the molar ratio of melamine to 1:1, and react for 10min; Dialdehyde, heated up to 60°C, reacted for 60min; cooled to 40°C, added 0.5% organic titanium chelate TMC-TE 0.86g, blended for 30min; weighed 1000g viscose solution, wherein the cellulose content in the viscose solution was 8%, by the mass ratio of cellulose in modified melamine formaldehyde resin and viscose solution is 35: 65, 43.08g modified resin is added in the corresponding viscose solution, through rapid stirring, vacuum defoaming, spinning molding, Conventional spinning processes such as drawing, washing, desulf...

Example Embodiment

[0018] Example 2:

[0019] With a molar ratio of 1:3.0, weigh 126.12g of melamine and 90g of paraformaldehyde into a three-necked flask, add 324.18g of distilled water, and raise the temperature to 50°C under stirring. After the solution is clarified, adjust the pH value with sodium hydroxide solution , control at pH=7, heat up to 95°C, react for 30min; cool down to 60°C, add 108.14g p-phenylenediamine in a 1:1 molar ratio with melamine, react for 60min; add in a 1:2 molar ratio with melamine 200.22g of glutaraldehyde, heat up to 95°C, react for 20min; cool down to 50°C, add 6.48g of 3% titanate coupling agent TMC-4, and blend for 10min; weigh 1000g of viscose solution, of which the viscose solution Cellulose content is 8%, is 40: 60 by the mass ratio of cellulose in modified melamine formaldehyde resin and viscose solution, 53.33g modified resin is added in the corresponding viscose solution, through rapid stirring, vacuum defoaming, Conventional spinning processes such as s...

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Abstract

The invention discloses high strength viscose and a preparation method thereof. The viscose satisfies the following conditions: the dry breaking strength is not less than 3.10cN/dtex; the wet breaking strength is not less than 1.6cN/dtex; the dry elongation at break is 14.0-19.0%. The preparation method comprises the following processes: synthesizing modified melamine formaldehyde resin as a reinforcing agent, then rapidly blending the modified melamine formaldehyde resin with a viscose solution and adopting conventional spinning technology to prepare the high strength viscose. The preparation method of the high strength viscose, which is provided by the invention, is simple in process operation and has the effect of solving the problem of poor compatibility of the melamine formaldehyde resin and the viscose. The viscose prepared by the method has greatly improved strength than common viscose and has a good application prospect.

Description

technical field [0001] The invention belongs to the innovation in the technical field of cellulose viscose fiber, and in particular relates to a high-strength viscose fiber and a preparation method thereof. Background technique [0002] Viscose fiber has a series of valuable physical and mechanical properties and properties that meet hygienic requirements. As a regenerated cellulose fiber, its biggest feature is that it has some properties very similar to cotton fiber, comfortable to wear, good spinnability, and its fineness and length can be adjusted according to the application, so it is widely welcomed. However, the strength of ordinary viscose fiber is relatively low, and it swells in wet state, the strength decreases obviously, and the dimensional stability is poor, which affects the wearing performance of the fabric. Therefore, it is of great significance to improve the properties of viscose fibers by blending and other methods, and to prepare new varieties of viscose...

Claims

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Application Information

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IPC IPC(8): D01F2/10
CPCD01F2/10
Inventor 齐鲁马超李昌垒白立峰杨东昌
Owner TIANJIN POLYTECHNIC UNIV
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