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Preparation of polyacrylate/nano zno composite leather finishing agent and preparation method by pickering miniemulsion polymerization

A polyacrylate, leather finishing agent technology, applied in small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, leather surface treatment, etc. The problem of low solid content, etc., can improve the air permeability of the film, improve the poor water resistance of the film, and improve the wet rubbing fastness and hygienic performance.

Active Publication Date: 2020-12-11
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Pickering emulsion polymerization method is a kind of polymerization method that replaces the traditional surfactant stable emulsion with inorganic nanoparticles, which can avoid the defects caused by traditional surfactants and endow the composite emulsion with some nanometer characteristics, but the prepared emulsion has poor stability, Disadvantages such as low solid content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The invention provides a method for preparing polyacrylate / nano-ZnO composite leather finishing agent by Pickering mini-emulsion polymerization,

[0016] Concretely comprise the following steps: the following are parts by mass unless otherwise stated,

[0017] Dissolve 0.24-1.44 parts of triethoxyvinylsilane (DNS-86) in 100 parts of deionized water, then add 1.44-2.88 parts of nano-ZnO particles, mix and sonicate for 10-15 minutes; 24 parts of methacrylate (MMA), 24 parts of butyl acrylate (BA), 1.44 parts of hexafluorobutyl methacrylate (G02), and 1.44 parts of n-butanol were mixed, emulsified at high speed for 10-15 minutes, and then ultrasonicated for 10-15 minutes to obtain a fine emulsion ;

[0018] Dissolve 1.44 parts of ammonium persulfate (APS) in 100 parts of deionized water to prepare an aqueous initiator solution;

[0019] Raise the temperature to 75-85 °C and rotate at 300 r / min. First, add 1 / 3 volume part of the initiator aqueous solution into the three-n...

Embodiment 1

[0022] Dissolve 0.24 parts by mass of triethoxyvinylsilane (DNS-86) in 100 parts by mass of deionized water, then add 1.44 to 2.88 parts by mass of nano-ZnO particles, mix and sonicate for 10 to 15 minutes; Acrylate (MMA), 24 parts by mass of butyl acrylate (BA), 1.44 parts by mass of hexafluorobutyl methacrylate (G02), and 1.44 parts by mass of n-butanol were mixed, emulsified at high speed for 10-15 minutes, and then ultrasonicated for 10 minutes. ~15 min to get fine emulsion;

[0023] Dissolving 1.44 parts by mass of ammonium persulfate (APS) in 100 parts by mass of deionized water to prepare an aqueous initiator solution;

[0024] Raise the temperature to 75-85 °C and rotate at 300 r / min. First, add 1 / 3 volume part of the initiator aqueous solution into the three-necked flask and keep it warm for 10 minutes, then add the remaining initiator aqueous solution and fine emulsion dropwise, 1.5-2 After adding h dropwise, keep warm for 2 hours, filter the material with gauze aft...

Embodiment 2

[0026] Dissolve 0.24-1.44 parts by mass of triethoxyvinylsilane (DNS-86) in 100 parts by mass of deionized water, then add 1.44 parts by mass of nano-ZnO particles, mix and sonicate for 10-15 minutes; 24 parts by mass of methyl Acrylate (MMA), 24 parts by mass of butyl acrylate (BA), 1.44 parts by mass of hexafluorobutyl methacrylate (G02), and 1.44 parts by mass of n-butanol were mixed, emulsified at high speed for 10-15 minutes, and then ultrasonicated for 10 minutes. ~15 min to get fine emulsion;

[0027] Dissolving 1.44 parts by mass of ammonium persulfate (APS) in 100 parts by mass of deionized water to prepare an aqueous initiator solution;

[0028] Raise the temperature to 75-85 °C and rotate at 300 r / min. First, add 1 / 3 volume part of the initiator aqueous solution into the three-necked flask and keep it warm for 10 minutes, then add the remaining initiator aqueous solution and fine emulsion dropwise, 1.5-2 After adding h dropwise, keep warm for 2 hours, filter the ma...

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Abstract

The invention relates to a polyacrylate / nanometer ZnO composite leather finishing agent prepared by a Pickering miniemulsion polymerization method and a preparation method. An acrylate monomer is usedas a main raw material, nanometer ZnO is used instead of a conventional surfactant, and meanwhile, a hydrophobic fluorinated monomer is introduced through the characteristic of droplet nucleation ofthe Pickering miniemulsion polymerization method to prepare polyacrylate / nanometer ZnO composite emulsion. The shortcomings, brought by the conventional surfactant, of polyacrylate emulsion are overcome, and meanwhile, the shortcoming of poor stability of emulsion prepared by a Pickering emulsion polymerization method is improved. When the leather finishing agent is applied to a leather finishingprocedure, the breathability, the moisture permeability, the hydrophobicity, the mechanical performance and the dry and wet rubbing fastness of a leather sample are all improved.

Description

technical field [0001] The invention belongs to the technical field of leather finishing agents, and relates to a polyacrylate / nanometer ZnO composite leather finishing agent prepared by a Pickering mini-emulsion polymerization method and a preparation method. Background technique [0002] Polyacrylate emulsion has excellent heat resistance stability, weather resistance, acid and alkali resistance, gloss retention, mechanical properties, adhesive properties, etc., and also has good film-forming properties, easy to obtain raw materials and relatively low cost, etc. The advantage is that it is one of the most commonly used leather finishing materials at present. Although the application of traditional polyacrylate finishing agents is relatively common, the water resistance of polyacrylate emulsion film formation is poor, which seriously affects the wet rubbing fastness of leather samples after coating; at the same time, its film formation is relatively dense, and its air perme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/24C08F2/22C14C11/00C09D133/12C09D7/62
CPCC08F2/22C08F220/14C08F220/18C08K2003/2296C08K2201/011C09D133/16C14C11/003C09D7/62C08F220/1804C08K9/06C08K3/22C08F220/24
Inventor 吕斌杨娜张宇聪郭旭高党鸽
Owner SHAANXI UNIV OF SCI & TECH
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