Preparation method of cationic aldehyde-containing polymer/montmorillonite nano-composite tanning agent

A technology of composite tanning agent and nanocomposite materials, which is applied in the field of preparation of nanocomposite tanning agents, can solve problems such as waste, excessive tanning waste, and low leather utilization rate, and achieve the effect of increasing profits, increasing profits, and good performance

Inactive Publication Date: 2009-09-30
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a traditional industry, the leather industry is characterized by high input of raw materials and low output of products. The application range of leather is greatly restricted by its strength and toughness. Because the strength and toughness of some parts cannot meet the requirements, the entire leather The utilization rate is low, and the utilization rate of raw hide is only about 30%, which causes great waste and produces more tanning waste, which increases the environmental burden and the cost of treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1, add 41.04g of deionized water to the three-necked flask, stir slowly, slowly add 0.5556g of sodium montmorillonite, after the addition is completed, gradually increase the stirring speed, stir for 30min, add 20.00g of diallyl dimethyl ammonium chloride, heated to 80°C, stirred rapidly for 4 hours, poured into a beaker and ultrasonically treated for 30 minutes, cooled to room temperature, added to a three-necked flask, stirred slowly, and then added the dissolved acrylamide and initiator to the three-necked flask respectively (Dissolve 15.78g of acrylamide, 2.23g of sodium bisulfite, and 0.56g of ammonium persulfate in a total of 15.78g of water, respectively), stir for 20 minutes, heat up to 50°C, react for 5 hours, and the reaction is completed to obtain polydiallyl Dimethyl ammonium chloride-acrylamide / montmorillonite nanomaterials.

[0015] Adjust the pH of 14.00g glyoxal solution (mass fraction 30%) to 4.0, heat up to 40°C, and add 30.17g polydiallyldimet...

Embodiment 2

[0016] Example 2, add 41.04g of deionized water to the three-necked flask, stir slowly, slowly add 0.8334g of sodium montmorillonite, after the addition is completed, gradually increase the stirring speed, stir for 30min, add 20.00g of diallyl dimethyl ammonium chloride, heated to 80°C, stirred rapidly for 3 hours, poured into a beaker and ultrasonically treated for 30 minutes, cooled to room temperature, added to a three-necked flask, stirred slowly, and then added the dissolved acrylamide and initiator to the three-necked flask respectively (Dissolve 15.78g of acrylamide, 2.23g of sodium bisulfite, and 0.56g of ammonium persulfate in a total of 15.78g of water, respectively), stir for 20 minutes, heat up to 50°C, react for 6 hours, and the reaction is completed to obtain polydiallyl Dimethyl ammonium chloride-acrylamide / montmorillonite nanomaterials.

[0017] Adjust the pH of 14.00g glyoxal solution (mass fraction 30%) to 4.5, heat up to 40°C, and add 30.17g polydiallyldimet...

Embodiment 3

[0018] Example 3, add 41.04g of deionized water to the three-necked flask, stir slowly, slowly add 1.389g of sodium montmorillonite, after the addition is completed, gradually increase the stirring speed, stir for 30min, add 20.00g of diallyl dimethyl ammonium chloride, heated to 80°C, stirred rapidly for 4 hours, poured into a beaker and ultrasonically treated for 20 minutes, cooled to room temperature, added to a three-necked flask, stirred slowly, and then added the dissolved acrylamide and initiator to the three-necked flask respectively (Dissolve 15.78g of acrylamide, 2.23g of sodium bisulfite, and 0.56g of ammonium persulfate in a total of 15.78g of water, respectively), stir for 20 minutes, heat up to 50°C, react for 6 hours, and the reaction is completed to obtain polydiallyl Dimethyl ammonium chloride-acrylamide / montmorillonite nanomaterials.

[0019] Adjust the pH of 14.00g glyoxal solution (mass fraction 30%) to 5.0, heat up to 40°C, and add 30.17g polydiallyldimeth...

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PUM

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Abstract

The invention relates to a preparation method of cationic aldehyde-containing polymer/montmorillonite nano-composite tanning agent. The nano-tanning agents are still in a development stage at present, reports are relatively few. The invention adopts intercalation cyclization polymerization method to prepare strengthening and toughening-type cationic aldehyde-containing polymer/montmorillonite nano-composite tanning agent for leather and takes water-soluble cationic monomer diallyl dimethyl ammonium chloride, acrylamide, glyoxal and montmorillonite as raw materials, the diallyl dimethyl ammonium chloride and the acrylamide are cyclized and polymerized in a montmorillonite layer to prepare poly-diallyl dimethyl ammonium chloride- acrylamide/montmorillonite nano materials which are reacted with the glyoxal to prepare the cationic aldehyde-containing polymer/montmorillonite nano-composite tanning agent for leather. Matching with 2 percent of chrome tanning tanning agent, the tanning tanning agent can make thickening ratio of crust leather reach 71.05 percent, increase the tensile strength to 262.60 percent, and increase the tearing strength by 62.87 percent.

Description

Technical field: [0001] The invention relates to a preparation process of a nano-composite tanning agent used in leather tanning, which is a preparation method of a cationic aldehyde group-containing polymer / montmorillonite nano-composite tanning agent. Background technique: [0002] As a traditional industry, the leather industry is characterized by high input of raw materials and low output of products. The application range of leather is greatly restricted by its strength and toughness. Because the strength and toughness of some parts cannot meet the requirements, the entire leather The utilization rate is low, and the utilization rate of raw hide is only about 30%, which causes great waste and produces more tanning waste, which increases the environmental burden and the cost of treatment. If the strength and toughness of leather can be greatly improved, and one skin can be changed to multiple skins, it can not only solve the problem of waste of resources, but also increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/22C08F226/04C08F2/44C08F8/28C08K3/34
Inventor 马建中高党鸽吕斌李运董雷
Owner SHAANXI UNIV OF SCI & TECH
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