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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, long pulping time, environmental pollution, etc., achieve less types and contents of raw materials, and simple preparation process , the effect of reducing production costs

Inactive Publication Date: 2009-04-08
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 pulp, comprising the following steps:

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

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

[0020] The third step: stable, the slurry after the composite reaction is reduced to a viscosity of 15CP, adding 0.73 parts by weight of an oxidant and 45.27 parts by weight of a stabilizer and stirring until unif...

Embodiment 2

[0024] A preparation method of flax composite pulp, comprising the following steps:

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

[0026] The second step: compounding, the starch temperature after the first step of viscosity reduction is lowered to room temperature, and then 105 parts by weight of softening agent are sprayed into the reaction tower to stir, and the described softening agent is 30 parts of triethanolamine, 20 parts of Diethylene glycol, 50 parts of polyethylene glycol and 5 parts of benzalkonium bromide, they react with starch molecules after viscosity reduction to obtain slurry;

[0027] The third step: stabilization, the slurry after the composite reaction is reduced to a viscosity of 10CP, adding 0.11 parts by weight of an oxidant and 64.89 parts by weight of a stabilizer and stirring until unif...

Embodiment 3

[0031] A preparation method of flax composite pulp, comprising the following steps:

[0032] Step 1: Viscosity reduction, adding 860 parts by weight of starch into a closed reaction tower, stirring at a temperature of 150°C until the viscosity drops to 20CP and the water content drops to 6%;

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

[0034] Step 3: Stabilize, the slurry after the composite reaction is reduced to a viscosity of 20CP, add 1 part by weight of an oxidant and 18 parts by weight of a stabilizer and stir until evenly mixed, and t...

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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 reactor and 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 with the 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 pulp, in particular to a preparation method of flax composite pulp. Background technique: [0002] The size used for textile yarn sizing in the domestic textile industry is mostly various starch sizes or various water-soluble chemical sizes, or a mixed size of chemical sizes and starch sizes. The preparation of starch size is mainly to reduce the viscosity of starch by chemical methods to increase the fluidity and permeability of the size, but the strength of the size film formed by this type of size is not enough, the fall of the pulp is serious, and the size film is brittle and flexible. Poor performance, it is difficult to meet the requirements of textile yarn sizing when used alone. The preparation of water-soluble chemical slurry is to strictly control its pH value, a slight error will lead to a change in pH value, then the prepared slurry will be unqualified, and the price of the prepared ...

Claims

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Application Information

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IPC IPC(8): D06M15/11D06M13/325D06M11/82D06M13/165D06M15/53D06M15/423D06M101/06
Inventor 李林学
Owner 李林学