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Preparation method of flax composite slurry

A composite pulp and flax technology, applied in textiles and papermaking, fiber treatment, plant fiber, etc., can solve the problems of unstable slurry, environmental pollution, long pulping time, etc., achieve less types and contents of raw materials, and reduce production costs , The effect of simple preparation process

Inactive Publication Date: 2011-09-07
李林学 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of the slurry prepared by mixing chemical slurry and starch slurry are also exposed: the slurry is unstable, easy to delaminate, and the pulping time is long, resulting in a huge waste of energy and equipment. After warp sizing, it is difficult to separate yarns, easy to form regenerated hairiness, difficult to desizing, and the size cannot be biodegraded, causing serious environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of flax composite slurry includes the following steps:

[0018] The first step: reduce the viscosity, add 920 parts by weight of starch into the closed reaction tower, and stir until the viscosity drops to 15CP and the water content drops to 2% at a temperature of 200°C;

[0019] The second step: compounding. The temperature of the starch reduced in the first step is lowered to room temperature, and 36 parts by weight of softener is sprayed into the reaction tower and stirred. The softener is 5 parts of triethanolamine and 9 parts of softener. Diethylene glycol, 20 parts of polyethylene glycol and 2 parts of benzalkonium bromide, which react with the starch molecules after viscosity reduction to obtain a slurry;

[0020] The third step: stabilization, the slurry after the composite reaction is reduced to a viscosity of 15CP, and 0.73 parts by weight of oxidant and 45.27 parts by weight of stabilizer are added and stirred until the mixture is uniform. The o...

Embodiment 2

[0024] A preparation method of flax composite slurry includes the following steps:

[0025] The first step: reduce the viscosity, add 820 parts by weight of starch into the closed reaction tower, and stir until the viscosity drops to 10CP and the water content drops to 3% at a temperature of 150°C;

[0026] The second step: compounding, the temperature of the starch reduced in the first step is lowered to room temperature, and 105 parts by weight of softener is sprayed into the reaction tower and stirred. The softener is 30 parts of triethanolamine and 20 parts of Diethylene glycol, 50 parts of polyethylene glycol and 5 parts of benzalkonium bromide, which react with the starch molecules after viscosity reduction to obtain a slurry;

[0027] The third step: stabilization, the slurry after the compound reaction is reduced to a viscosity of 10CP, and 0.11 parts by weight of an oxidant and 64.89 parts by weight of a stabilizer are added and stirred until they are uniformly mixed. The ox...

Embodiment 3

[0031] A preparation method of flax composite slurry includes the following steps:

[0032] The first step: reduce the viscosity, add 860 parts by weight of starch into the closed reaction tower, and stir until the viscosity drops to 20CP and the water content drops to 6% at a temperature of 150°C;

[0033] The second step: compounding, the temperature of the starch reduced in the first step is lowered to room temperature, and then 60.8 parts by weight of softener is sprayed into the reaction tower and stirred. The softener is 30 parts of triethanolamine and 16.8 parts of Diethylene glycol, 10 parts of polyethylene glycol and 4 parts of benzalkonium bromide react with the starch molecules after viscosity reduction to obtain a slurry;

[0034] The third step: stabilization, the viscosity of the composite reaction slurry is reduced to 20CP, and 1 part by weight of oxidant and 18 parts by weight of stabilizer are added and mixed until uniformly mixed. The oxidant is 0.5 parts of sodium ...

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Abstract

The invention relates to the technical field of textile sizing agent, in particular to a preparation method of a flax composite sizing agent, which comprises five steps of viscosity reduction, compounding, stabilizing, strengthening and finishing. The step of viscosity reduction can control the evaporation of viscosity and moisture effectively and prevent steam from condensing in a closed reactorand prevent starch materials from caking in the reactor; in the compounding reaction, a softener with hydroxyl groups and starch molecules with viscosity reduced to 10 CP to 20 CP and the water content reduced to 2 percent to 6 percent are added to carry out the crosslinking composite reaction, simultaneously, amino groups with positive charges are introduced to lead the sizing agent to take withthe cationic charges and be naturally combined with haircord molecules with negative charges by the force among molecules; and a proper amount of oxidant and stabilizer are added to lead the viscosity of the sizing agent not to change during a high temperature burning and boiling process when in use. The preparation method of the flax composite sizing agent is simple in preparation technology, high in production efficiency, less in used material type and content and low in material cost, thus greatly reducing the production cost.

Description

Technical field: [0001] The invention relates to the technical field of textile slurry, in particular to a preparation method of flax composite slurry. Background technique: [0002] In the domestic textile industry, most of the sizing materials used for sizing textile yarns are various starch sizing agents or various water-soluble chemical sizing agents, or a mixed sizing agent of chemical sizing agents and starch sizing agents. The preparation of starch slurry is mainly to reduce the viscosity of starch through chemical methods to increase the fluidity and permeability of the slurry. However, the strength of the serosal film formed by this type of slurry is insufficient, the falling size is serious, and the serosal film is brittle and flexible. Poor performance, it is difficult to meet the sizing requirements of textile yarn when used alone. The preparation of water-soluble chemical slurry requires strict control of its pH value. A slight error will cause the pH value to chang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/11D06M13/325D06M11/82D06M13/165D06M15/53D06M15/423D06M101/06
Inventor 李林学
Owner 李林学