Functional textile sizing agent and preparation method thereof

A functional and sizing technology, applied in textiles, papermaking, fiber processing, etc., can solve problems such as environmental pollution, large foaming, breaking strength of the size film, elongation at break of the size film, and abrasion resistance that cannot meet the standard requirements.

Active Publication Date: 2013-10-09
山东奥尼生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned sizing agent foams greatly when polyvinyl alcohol PVA is desized, and is not easy to degrade, and will seriously pollute the environment
At present, if only modified starch or starch is used for sizing, no matter from the adhesion to the line, or the breaking strength of the size film, the elongation at break of the size film, and the abrasion resistance, etc., it cannot meet the standard requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A functional textile sizing agent comprising the following components: starch, plasticizer, crosslinking agent, sodium hydroxide, hydrochloric acid and water.

[0024] The proportions by weight of the components described in this example are: 40-80 starch, 0.5-50 plasticizer, 1-15 crosslinking agent, 1-8 sodium hydroxide, 1-3 hydrochloric acid, and the balance for water.

[0025] Wherein said starch comprises potato starch, tapioca starch, corn starch or / and wheat starch; Described plasticizer comprises ethanol, ethylene glycol, propylene glycol, glycerol, polyglycol, sugar alcohol, urea, citric acid or / and citric acid ester; the crosslinking agent includes sodium trimetaphosphate, phosphorus oxychloride, epichlorohydrin, glyoxal, glutaraldehyde, maleic anhydride, mixed anhydrides, epoxy compound petroleum-based monomer or / and divinylsulfone.

[0026] Taking the production of one ton of functional textile sizing agent as an example, the specific content and specif...

Embodiment 2

[0034] The difference between the present embodiment and the first embodiment is that the preparation method is different, and the specific steps of the present embodiment are as follows:

[0035] Step 1, adding the starch into the pre-mixer, starting the pre-mixer to stir;

[0036] Step 2, adding the water, the plasticizer, the sodium hydroxide and the hydrochloric acid into the pre-mixer in sequence, and stirring evenly to form a mixed material;

[0037] Step 3. Transport the mixed material in the premixer to a screw extruder with eleven working areas, and heat up each working area of ​​the screw extruder. The temperature of each working area is controlled as follows: 40°C in zones 1-3, 120°C in zones 4-8, and 110°C in zones 8-11, while adding the crosslinking agent into the screw extruder to obtain a wet sizing agent;

[0038] Step 4, drying the sizing agent wet product output by the screw extruder through an airflow dryer to obtain a sizing agent dry product;

[0039] St...

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PUM

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Abstract

The invention discloses a functional textile sizing agent. The agent comprises the following components of starch, a plasticizer, a crosslinking agent, sodium hydroxide, hydrochloric acid and water. Moreover, the invention further discloses a preparation method of the sizing agent. The method comprises the following steps of: performing reaction by adopting a screw extrusion machine, and shearing and degrading the starch at high temperature and high pressure so as to form high concentration and low viscosity paste; meanwhile, plasticizing to enable a formed sizing film to have high strength and toughness, wherein the sizing film has good wear resistance and flexible resistance as well as strength even higher than polyvinyl acetate (PVA) in a sizing process. Moreover, the crosslinking molecular weight is increased, hydrophilic hydroxyls are greatly closed, the fiber adhesive force is increased, the hygroscopicity of the sizing film is reduced, and the mutual adhering probability of yarns is decreased.

Description

technical field [0001] The invention relates to a textile sizing agent and a method for preparing the sizing agent. Background technique [0002] In the textile industry, sizing agent is an important textile auxiliary. At present, starch or modified starch is basically added with a certain amount of polyvinyl alcohol (PVA) for mixing, and then boiled for sizing. The above-mentioned sizing agent foams greatly when the polyvinyl alcohol PVA is desized, is not easy to degrade, and will seriously pollute the environment. At present, if purely modified starch or starch is used for sizing, no matter the adhesion to the line, or the breaking strength of the size film, the elongation at break of the size film, and the abrasion resistance, etc., cannot meet the standard requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a functional textile sizing agent with strong adsorption ability to pulp lines, high fract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/11D06M11/38D06M13/148D06M13/207D06M13/123
Inventor 王希功
Owner 山东奥尼生物科技股份有限公司
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