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Normal-temperature size mixing and normal-temperature warp sizing method

A normal temperature, sizing technology, used in textiles, papermaking, fiber processing, etc., can solve the problems of unstable viscosity, large viscosity fluctuation, high temperature slurry crusting, etc., and achieve the effect of simple preparation method, good fluidity, and uniform slurry

Inactive Publication Date: 2013-01-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have achieved the sizing effect, there are problems such as skinning of the high-temperature slurry, difficulty in observing the liquid level of the slurry, inaccurate liquid level determination, molecular degradation of the slurry, unstable viscosity, and inability to withstand high-temperature fiber deformation.
[0003] Another problem related to this known high-temperature cooking and sizing method is the current energy problem. The slurry water dispersion system is raised from room temperature to high temperature, and it takes several hours to cook, keep warm, and sizing, which consumes more energy. Does not meet the current production requirements for energy saving and consumption reduction
[0004] Although there are some works on the boiling and sizing process improvement of starch-containing size, for example, the low-temperature semi-gelatinized warp yarn sizing method in Patent Application No. 200610103441, and the patent application No. 200510018365 is a method of directly carrying out warp yarn sizing with starch emulsion, but The temperature of the former is around 60°C, the starch semi-gelatinization state is difficult to control, and the viscosity fluctuates greatly; the latter starch milk particles tend to sink unevenly at room temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare materials according to the following sizing ratio:

[0026] Starch 7%

[0027] Polyacrylate liquid size 3%

[0028] Emulsifying wax 0.2%

[0029] Penetrant 0.2%

[0030] water remainder

[0031] Add 800 kg of normal temperature water into the mixing tank, turn on the mixer, add 70 kg of pregelatinized starch with a viscosity of 6 to 8 mPa.s, stir until uniform, observe no visible particles, add polyacrylic acid with a solid content of 25% by mass 120 kg of ester liquid slurry, continue to stir, add 8 kg of emulsified wax with a solid content of 25% in mass percentage, 2 kg of fatty alcohol polyoxyethylene ether penetrating agent, continue to stir for 30 minutes, and input the sizing machine pulp through the slurry pipeline In the groove, the warp yarns are sized, and the sizing speed is 60m / min. The obtained slurry had a solid content of 10.4%.

Embodiment 2

[0033] Repeat embodiment 1 by described identical steps, but sizing material and consumption have following difference:

[0034] Starch 9%

[0035] Water-soluble polyester liquid 3%

[0036] Emulsifying wax 0.4%

[0037] Penetrant 0.1%

[0038] water remaining.

[0039] The resulting slurry had a solid content of 12.5%.

Embodiment 3

[0041] Prepare materials according to the following sizing ratio:

[0042] Starch 8%

[0043] Sodium Hydroxide 0.6%

[0044] Acrylic copolymer liquid size 3%

[0045] Emulsifying wax 0.2%

[0046] Penetrant 0.2%

[0047] water remainder

[0048] Add 400 kg of normal temperature water into the mixing tank, start the mixer, add 6 kg of sodium hydroxide, after dissolving, add 80 kg of normal temperature insoluble modified starch with a viscosity of 6-8 mPa.s, stir until uniform, and observe that it is transparent slurry, then add 382 kg of water, stir evenly, add 120 kg of acrylic acid copolymer liquid slurry with a mass percent solid content of 25% and an acid group equivalent of 0.6mol / 100g, continue stirring, add a mass percent solid content of Add 8 kg of 25% emulsified wax, add 2 kg of fatty alcohol polyoxyethylene ether penetrating agent, continue to stir for 30 minutes, and input it into the sizing tank of the sizing machine through the sizing pipeline to sizing the w...

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PUM

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Abstract

The invention relates to a normal-temperature size mixing and normal-temperature warp sizing method, which comprises the following steps of: mixing starch size at the normal temperature of between 20 and 40 DEG C under a neutral or alkali condition to form size, then adding neutral or low-pH polymer size, emulsified liquid wax and penetrating agent component into the size, stirring and mixing themixture uniformly in a size mixing barrel at the normal temperature, and then sizing warps on a sizing machine at the normal temperature. The method is simple, low in cost, environment-friendly and suitable for industrialized production; and when the method is suitable for mixing the size and sizing the warps at the normal temperature (20 to 40 DEG C), the size is uniform, has good liquidity, does not gel or deposit, and has the same sizing effect as high-temperature boiling and high-temperature sizing.

Description

technical field [0001] The invention belongs to the field of sizing and sizing for warp yarn sizing, and in particular relates to a method for normal temperature sizing and normal temperature sizing of warp yarns. Background technique [0002] Textile warp yarns need sizing to bond fibers before weaving, so that warp yarns can withstand the repeated friction of warp wires, healds, reeds, adjacent yarns, etc. during weaving. The sizing material is usually starch, polyvinyl alcohol, polyacrylic acid and other polymer substances such as carboxymethyl cellulose, gelatin, polyoxyethylene, etc. These materials are assembled during sizing, fired at high temperature with water to form a slurry, and then Warp yarns are sized at high temperature. So far, the warp yarn sizing process of the domestic cotton textile system basically continues to use this high-temperature atmospheric pressure cooking, or high-temperature and high-pressure cooking pulp, and high temperature (85 ° C ~ 95 °...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/11D06M13/02D06M15/263D06M15/285D06M15/507D06M15/53
Inventor 郭腊梅戴传彪李超胡娟
Owner DONGHUA UNIV