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Preparation method of polyacrylate/nano ZnO composite leather finishing agent

A technology of polyacrylate and leather finishing agent, applied in coating, textile and papermaking, fiber processing and other directions, can solve the problems of sticky composite emulsion coating film and poor film stability, achieve stable polymerization process and overcome polymerization temperature High, improving the effect of hot sticking and cold brittleness

Inactive Publication Date: 2013-05-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of preparation method of polyacrylate / nanometer ZnO composite leather finishing agent, can effectively overcome the defect that blending method or single in-situ method prepares polyacrylate / nanometer ZnO composite emulsion film stability, and At the same time, it solves the sticky problem of the composite emulsion coating film prepared by the oxidation initiation system

Method used

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  • Preparation method of polyacrylate/nano ZnO composite leather finishing agent
  • Preparation method of polyacrylate/nano ZnO composite leather finishing agent
  • Preparation method of polyacrylate/nano ZnO composite leather finishing agent

Examples

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Embodiment 1

[0029] Step 1: Dissolve 0.3 parts by weight of emulsifier in 30 parts by weight of deionized water, adjust the pH value to 7 with ammonia water, then transfer the above solution into a dry three-necked flask, and keep it warm at 50°C for 20 minutes to form an emulsifier aqueous solution;

[0030] Step 2: Prepare 0.15 parts by weight of oxidizing agent, 0.03 parts by weight of reducing agent and 30 parts by weight of acrylate monomer, weigh 1 / 10 of the total amount of oxidizing agent and 1 / 10 of the total amount of reducing agent and dissolve them in 2 wt. 1 part of deionized water to form an aqueous solution of oxidizing agent and reducing agent, then add 1 / 6 of the total amount of acrylate monomers, the aqueous solution of oxidizing agent and reducing agent to the emulsifier aqueous solution in sequence, and keep warm at 60°C for 26 minutes;

[0031] Step 3: take 0.24 parts by weight of zinc acetate and dissolve it in 12 parts by weight of deionized water to form an aqueous s...

Embodiment 2

[0037] Step 1: Dissolve 0.5 parts by weight of emulsifier in 30 parts by weight of deionized water, adjust the pH value to 7 with ammonia water, then transfer the above solution into a dry three-necked flask, and keep it warm at 50°C for 20min to form Emulsifier aqueous solution;

[0038] Step 2: Prepare 0.2 parts by weight of oxidizing agent, 0.06 parts by weight of reducing agent and 30 parts by weight of acrylate monomer, weigh 1 / 10 of the total amount of oxidizing agent and 1 / 10 of the total amount of reducing agent and dissolve them in 2 parts by weight part of deionized water to form an aqueous solution of oxidizing agent and reducing agent, then add 1 / 6 of the total amount of acrylate monomers, the aqueous solution of oxidizing agent and reducing agent to the emulsifier aqueous solution in sequence, and keep warm at 60°C for 29 minutes;

[0039]Step 3: take 0.48 parts by weight of zinc acetate and dissolve it in 12 parts by weight of deionized water to form an aqueous s...

Embodiment 3

[0045] Step 1: Dissolve 0.7 parts by weight of emulsifier in 30 parts by weight of deionized water, adjust the pH value to 7 with ammonia water, then transfer the above solution into a dry three-necked flask, and keep it warm at 50°C for 20 minutes to form an emulsifier aqueous solution;

[0046] Step 2: Prepare 0.2 parts by weight of oxidizing agent, 0.09 parts by weight of reducing agent and 30 parts by weight of acrylate monomer, weigh 1 / 8 of the total amount of oxidizing agent and 1 / 8 of the total amount of reducing agent and dissolve them in 2 parts by weight part of deionized water to form an aqueous solution of oxidizing agent and reducing agent, and then add 1 / 4 of the total amount of acrylate monomers, the aqueous solution of oxidizing agent and reducing agent to the emulsifier aqueous solution in sequence, and keep warm at 65°C for 32 minutes;

[0047] Step 3: take 0.72 parts by weight of zinc acetate and dissolve it in 12 parts by weight of deionized water to form a...

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Abstract

The invention relates to a preparation method of a polyacrylate / nano ZnO composite leather finishing agent. Nano ZnO is widely applied to modifying polyacrylate but the blending method and the in-situ dispersion method are not beneficial for nano ZnO to be uniformly dispersed in a polymer matrix, so that excellent performance of nano ZnO is hard to exert. The preparation method comprises the following steps of: preparing an emulsifier aqueous liquor; sequentially adding part of oxidant aqueous liquor, part of reducer aqueous liquor and part of acrylic monomers into the emulsifier aqueous liquor to insulate and react; then adding zinc acetate aqueous liquor, residual acrylic monomers, oxidant aqueous liquor and reducer aqueous liquor to insulate and react to obtain the composite leather finishing agent. The preparation method provided by the invention overcomes the deficiency of poor polymerization stability of a polyacrylate / nano ZnO composite emulsion prepared by single in situ method, the tensile strength of the film is improved by 8.75%, and the water resistance is improved by 43.54%.

Description

technical field [0001] The invention relates to a leather finishing agent, in particular to a preparation method of a polyacrylate / nanometer ZnO composite leather finishing agent. Background technique [0002] Polyacrylate is a kind of leather finishing agent widely used at present because of its flexible and elastic film formation, light resistance, aging resistance, excellent wet rub resistance and low cost of the coating. However, the "hot sticky and cold brittle" caused by its linear structure has become an obstacle to the wide application of this type of product. In recent years, there are various methods of modifying it at home and abroad, among which the research results of the modification of polyacrylate by many inorganic nanoparticles show that the introduction of nanoparticles can greatly improve the properties of polyacrylate. [0003] As an important member of inorganic nanoparticles, nano-ZnO is widely used in the modification of polyacrylate. The main modifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D135/02C09D7/12D06M15/263D06M15/285D06M11/44C08F222/20C08F220/06C08F220/14C08F220/18C08F220/28C08F220/56C08F4/40
Inventor 马建中刘易弘鲍艳刘俊莉
Owner SHAANXI UNIV OF SCI & TECH
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