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Biodegradable additive for improving property of PVA-substituted sizing agent

A technology of biodegradation and auxiliaries, applied in the field of textile auxiliaries, to achieve the effect of excellent biodegradability and low preparation cost

Inactive Publication Date: 2015-05-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of such materials as textile size additives has never been specifically reported

Method used

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  • Biodegradable additive for improving property of PVA-substituted sizing agent
  • Biodegradable additive for improving property of PVA-substituted sizing agent
  • Biodegradable additive for improving property of PVA-substituted sizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: A kind of biodegradable auxiliary agent for improving the performance of PVA substitute slurry is prepared by the following process steps:

[0034] Mix soybean meal with 0.5%, 1% and 2% sodium hydroxide solution in a mass ratio of 1:7.5 respectively, and after heating at 90°C for 1 hour, filter out the undissolved solid matter; use Adjust pH to 8 with 37% hydrochloric acid to obtain soybean meal-based adjuvant.

[0035] Mix 10 grams of soybean protein with 90 grams of 0.01% sodium hydroxide solution, heat and stir at 90°C for 30 minutes, adjust the pH to 7 with 37% hydrochloric acid, and obtain a soybean protein solution. At this time, the soybean meal additives obtained by treating with different concentrations of sodium hydroxide were added to the soybean protein solution, and the soybean meal additives with different alkali extraction conditions accounted for 5% of the soybean protein mass, and were uniformly stirred for 5 minutes to obtain a mixed solu...

Embodiment 2

[0036] Embodiment 2: A kind of biodegradable auxiliary agent for improving the performance of PVA substitute slurry is prepared by the following process steps:

[0037] (1) Mix soybean oil with 50% sodium hydroxide solution in a mass ratio of 1:1, heat at 100°C for 3 hours. Use 37% hydrochloric acid to adjust the pH to 8 to obtain the soybean oil-based adjuvant.

[0038] Mix 10 grams of soybean protein with 90 grams of 0.01% sodium hydroxide solution by mass, heat and stir at 90°C for 30 minutes, and adjust the pH to 7 with 37% hydrochloric acid to obtain a soybean protein solution. At this point, add soybean oil-based additives corresponding to 10%, 20% and 40% of the mass of the soybean protein solution to the soybean protein solution, raise the temperature to 90° C. and stir evenly for 5 minutes to obtain a mixed solution. The mixed solution was poured into a polytetrafluoroethylene-coated mold and left at room temperature for 48 hours to form a slurry film. Although the ...

Embodiment 3

[0039] Embodiment 3: A kind of biodegradable auxiliary agent for improving the performance of PVA substitute slurry is prepared by the following process steps:

[0040] To avoid the use of more expensive ethanol solutions, alkaline solutions can be used to dissolve gluten and distiller's grains. Mix gluten and corn distiller's grains with 0.5% lye in a mass ratio of 1:7.5, heat at 90°C for 1 hour, filter to obtain gluten and corn distiller's grains solution, and adjust the pH to 8. Obtain alkali-soluble gluten and distiller's grains-based additives.

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Abstract

The invention relates to a biodegradable additive for improving the property of a PVA-substituted sizing agent. The biodegradable additive is prepared from the following steps: by adopting agricultural side products and wastes as materials, obtaining a biodegradable mixture by alkaline extraction, and preparing the additive based on the agricultural side products and the wastes; or adopting anhydride (acetic anhydride, butanedioic anhydride and the like), unsaturated polar monomers (crylic acid, acrylonitrile, styrene and derivative and the like) to modify the additive based on the agricultural side products and the wastes, and preparing the modified additive based on the agricultural side products and the wastes; or adopting biodegradable polyhydric alcohol or polyhydric alcohol amine as the materials and preparing a plasticizing additive based on the agricultural side products and the wastes together with the additive based on the agricultural side products and the wastes. The biodegradable additive has the advantages that the sizing property of the biodegradable textile sizing agent for cotton yarns, polyester, cotton-polyester blended yarns and other blended yarn threads can be improved, and simultaneously the degradability of the novel sizing agent is not weakened, so that the biodegradable additive is a green sizing-agent additive with low preparation cost and excellent biodegradability.

Description

technical field [0001] The invention relates to a biodegradable auxiliary agent for improving the performance of PVA substitute slurry, and belongs to the technical field of textile auxiliary agents. Background technique [0002] Warp sizing is an integral step in the textile weaving process. There are about 1.1 million looms of various types in my country, and the annual consumption of pulp has reached 550,000 tons. In addition, the number of high-speed shuttleless looms is increasing at a rate of more than 10,000 per year, which further promotes the demand for pulp. Polyvinyl alcohol (PVA) is currently the most widely used and cost-effective textile size due to its excellent film-forming properties, adhesion and desizing properties. It has always been the first choice for sizing polyester and polyester-cotton blended yarns. At present, PVA size accounts for 2.5% of the global textile chemicals market, with annual sales of about US$5 billion. However, the chemical struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/15D06M15/333D06M15/11
Inventor 徐荷澜赵奕侯秀良
Owner JIANGNAN UNIV
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