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Preparation method of amphoteric vinyl polymer/ZnO nanocomposite tanning agent

A compound tanning agent and vinyl technology, which is applied in the field of preparation of amphoteric vinyl polymer/ZnO nano-composite tanning agent, to achieve enhanced dyeing and fatliquoring effects, good physical and mechanical properties, and good performance

Inactive Publication Date: 2010-01-06
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no related reports on the introduction of polymer-based ZnO nanocomposites into the field of leather tanning.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, (1) with 2gNaHSO 3 Dissolve in 4g of distilled water, add 50g of dimethyl diallyl ammonium chloride into a three-necked flask, mix 8g of acrylamide, 10g of hydroxyethyl acrylate, and 35g of acrylic acid into a constant pressure dropping funnel, and the initiator persulfuric acid After dissolving 9g of ammonium, add it to another dropping funnel, heat it in a water bath, raise the temperature to 55°C, keep the temperature constant, add the mixed monomer and initiator dropwise at the same time, finish the dropwise addition in half an hour, react at constant temperature for 3 hours, cool down, and adjust the pH with 40% NaOH It is 5.0, and the material is discharged.

[0015] (2) Add 2g of nano-ZnO and 90g of nano-ZnO into a three-necked flask together with amphoteric vinyl polymer, heat in a water bath, stir at 40°C for 2 hours, ultrasonically treat for 1.5 hours, and discharge to prepare amphoteric vinyl polymer / ZnO Nano-composite tanning agent.

Embodiment 2

[0016] Embodiment 2, (1) with 3gNaHSO 3 Dissolve it in 6g of distilled water, add it into a three-necked flask together with 40 dimethyl diallyl ammonium chloride, mix 9 g of acrylamide, 7 g of hydroxyethyl acrylate, and 34 g of acrylic acid into a constant pressure dropping funnel, and the initiator persulfuric acid After dissolving 5g of ammonium, add it to another dropping funnel, heat it in a water bath, raise the temperature to 70°C, keep the temperature constant, add the mixed monomer and initiator dropwise at the same time, finish the dropwise addition in half an hour, react at constant temperature for 3 hours, cool down, and adjust the pH with 40% NaOH It is 5.0, and the material is discharged.

[0017] (2) Add 3g of nanometer ZnO and 80g of nanometer ZnO into a three-necked flask together with amphoteric vinyl polymer, heat in a water bath, stir at 50°C for 2.5h at high speed, and ultrasonically treat it for 1h, and discharge to obtain amphoteric vinyl polymer / ZnO Na...

Embodiment 3

[0018] Embodiment 3, (1) with 3.5gNaHSO 3Dissolve in 7g of distilled water, add 45g of dimethyl diallyl ammonium chloride into a three-necked flask, mix 10g of acrylamide, 6g of hydroxyethyl acrylate, and 40g of acrylic acid into a constant pressure dropping funnel, and the initiator persulfuric acid After dissolving 8g of ammonium, add it to another dropping funnel, heat it in a water bath, raise the temperature to 65°C, keep the temperature constant, add the mixed monomer and initiator dropwise at the same time, finish the dropwise addition in half an hour, react at constant temperature for 4 hours, cool down, and adjust the pH with 40% NaOH It is 5.0, and the material is discharged.

[0019] (2) Add 5g of nanometer ZnO and 90g of nanometer ZnO into a three-necked flask together with amphoteric vinyl polymer, heat in a water bath, stir at 60°C for 3 hours, ultrasonically treat for 0.5h, and discharge to prepare amphoteric vinyl polymer / ZnO Nano-composite tanning agent.

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PUM

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Abstract

The invention relates to a preparation method of an amphoteric vinyl polymer / ZnO nanocomposite tanning agent. The traditional chrome tanning method causes serious environmental pollution, and Cr<6+> can directly damage skin of human body and induce a variety of diseases. The invention provides the method for preparing the amphoteric vinyl polymer / ZnO nanocomposite tanning agent by two steps of copolymerizing cationic monomer dimethyl diallyl ammonium chloride and vinyl monomers into an amphoteric vinyl polymer, and compositing the amphoteric vinyl polymer with nano-ZnO, thereby preparing the amphoteric vinyl polymer / ZnO nanocomposite tanning agent. The nanocomposite tanning agent is combined with 2% chrome powder for tanning pickled sheep skin, thereby improving the absorbability of chrome tanning waste liquid and enhancing the dyeing and fat-liquoring effect; and the thickness increment ratio of the tanned finished leather can achieve 53%, and the physical and mechanical performances are good. The nanocomposite tanning agent is environment-friendly and can reduce chrome pollution from the source.

Description

Technical field: [0001] The invention relates to the synthesis of an amphoteric vinyl polymer that has a tanning effect on leather and can improve the dyeing and fatliquoring effect by using cationic monomer dimethyl diallyl ammonium chloride, vinyl monomer and nano-ZnO as raw materials. Preparation method of substance / ZnO nano composite tanning agent. Background technique: [0002] The leather industry is a pillar industry in my country's light industry. In recent years, with the rapid development of the leather industry, my country is becoming one of the most active and promising markets for global leather trade. In tanning production, due to the excellent performance of chrome tanned leather, most of the finished leather is produced by chrome tanning [V.J.Sundar, J.Raghava Rao, C.Muralidharan. Cleaner chrometanning-emerging options[J].Journal of Cleaner Production, 2002, (10): 69-74.]. However, the traditional chrome tanning method has brought serious environmental poll...

Claims

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Application Information

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IPC IPC(8): C14C3/22C14C3/04
Inventor 高党鸽李运马建中吕斌向少君
Owner SHAANXI UNIV OF SCI & TECH
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