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Preparation method of polyacrylate/nano ZnO composite leather finishing agent

A technology of polyacrylate and leather finishing agent, which is applied in the fields of coating, textile and papermaking, fiber treatment, etc. It can solve the problems of stickiness and poor stability of the coating film of the composite emulsion, achieve the stability of the polymerization process and overcome the polymerization temperature High, improve the effect of hot sticky and cold crisp

Inactive Publication Date: 2015-04-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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, and adjust the pH to 7 with ammonia, then transfer the above solution into a dry three-necked flask and keep it at 50°C for 20 minutes to form an emulsifier Aqueous solution

[0030] Step 2: Prepare 0.15 parts by weight of oxidant, 0.03 parts by weight of reducing agent and 30 parts by weight of acrylate monomers, weigh 1 / 10 of the total amount of oxidant and 1 / 10 of the total amount of reducing agent and dissolve in 2 parts by weight Parts of deionized water to form an aqueous solution of oxidizer and reducing agent, and then add 1 / 6 of the total amount of acrylate monomers, the aqueous solution of oxidizer and reducing agent to the emulsifier aqueous solution, and keep the reaction at 60°C for 26min;

[0031] Step 3: Weigh 0.24 parts by weight of zinc acetate and dissolve in 12 parts by weight of deionized water to form an aqueous solution of zinc acetate, and dissolve the remainin...

Embodiment 2

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

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

[0039] Step 3: Weigh 0.48 parts by weight of zinc acetate and dissolve in 12 parts by weight of deionized water to form a zinc acetate aqueous solution, and the remaining oxidizing ...

Embodiment 3

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

[0046] Step 2: Prepare 0.2 parts by weight of oxidant, 0.09 parts by weight of reducing agent and 30 parts by weight of acrylate monomers, weigh 1 / 8 of the total amount of oxidant and 1 / 8 of the total amount of reducing agent and dissolve in 2 parts by weight Parts of deionized water to form an aqueous solution of oxidizing agent and reducing agent, and then adding 1 / 4 of the total amount of acrylate monomers, the aqueous solution of oxidizing agent and reducing agent to the emulsifying agent aqueous solution, and reacting at 65°C for 32 minutes;

[0047] Step 3: Weigh 0.72 parts by weight of zinc acetate and dissolve in 12 parts by weight of deionized water to form an aqueous solution of zinc acetate, an...

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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 Patents(China)
IPC IPC(8): C08F222/20C09D133/04C09D135/02C09D7/12D06M15/263D06M15/285C08F220/06C08F220/14C08F220/18
Inventor 马建中刘易弘鲍艳刘俊莉
Owner SHAANXI UNIV OF SCI & TECH
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