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Preparation method for in-situ synthesis of zinc oxide emulsion foaming material

An in-situ synthesis, emulsion foaming technology, applied in the direction of fiber type, textile and papermaking, fiber processing, etc., can solve the problems of poor strength, corrosion resistance, high temperature resistance, etc., and achieve simple preparation method and good molding performance. , Excellent high and low temperature resistance

Active Publication Date: 2021-11-09
ANHUI JINHUA ZINC OXIDE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above materials have poor corrosion resistance, high temperature resistance, and poor strength. In order to solve the above problems, those skilled in the art urgently need to develop a preparation method and application of in-situ synthetic zinc oxide emulsion foaming materials to meet the existing market. Requirements and Performance Requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First, in terms of parts by weight, add 50 parts of mass fraction 11.0% sodium carbonate solution to 25 parts of mass fraction 40% ZnSO 4 ·7H 2 In the O solution, add 25 parts of 100°C boiling water and mix evenly to obtain the zinc oxide precursor emulsion. In parts by weight, 90 parts of the zinc oxide precursor emulsion are dispersed in 91 parts by volume ratio of ammonia water and ammonium chloride solution 1: 1, magnetically stirred at a constant speed for 10 minutes to make it evenly mixed, then slowly added dropwise 48 parts of polytetrafluoroethylene dispersion emulsion, and maintained continuous magnetic stirring at a uniform speed to obtain in-situ synthesized zinc oxide emulsion;

[0026] Secondly, cold press forming: use 20-mesh sieve to synthesize zinc oxide emulsion in situ, add it into the open cavity, raise the temperature to 105°C, add 1200 V high-voltage direct current to the emulsion for 10 minutes, and the electrode distance is 6 mm. Electrostatic s...

Embodiment 2

[0029] First, in terms of parts by weight, add 45 parts of mass fraction 11.5% sodium carbonate solution to 25 parts of mass fraction 42% ZnSO 4 ·7H 2In the O solution, add 20 parts of boiling water at 100°C and mix evenly to obtain the zinc oxide precursor emulsion. In parts by weight, 85 parts of the zinc oxide precursor emulsion are dispersed in 85 parts of ammonia water and ammonium chloride solution with a volume ratio of 1: 1, magnetically stirred at a constant speed for 10 minutes to make it evenly mixed, and then slowly added dropwise 48 parts of polyimide emulsion, maintaining continuous magnetic stirring at a uniform speed, to obtain an in-situ synthesized zinc oxide emulsion;

[0030] Secondly, cold press molding: use 20-mesh sieve to synthesize zinc oxide emulsion in situ, add it into the open cavity, raise the temperature to 100°C, add 1000V high-voltage direct current to the emulsion for 8 minutes, and conduct static electricity with an electrode distance of 4.0m...

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Abstract

The invention belongs to the technical field of zinc oxide materials, and particularly relates to a preparation method for in-situ synthesis of a zinc oxide emulsion foaming material. Zinc carbonate can form a good foam structure, has good compatibility with polymer emulsion, has the effects of easily permeating into the emulsion and breaking foam to generate gas, and can be decomposed at high temperature, the generated gas is nontoxic, and zinc oxide is generated after decomposition. The zinc oxide emulsion foaming material is synthesized in situ, the effect of a foaming agent is achieved while zinc oxide is generated, the zinc oxide emulsion foaming material is uniformly dispersed in the emulsion, particle agglomeration caused by adding and filling zinc oxide in the past is avoided, and meanwhile, uniform foaming is better achieved while uniformly-distributed zinc oxide is generated. The polymer emulsion is suitable for relatively high decomposition temperature, so that the polymer emulsion has good forming performance. Meanwhile, the foaming material can be used for emulsion foaming treatment on the surfaces of high-temperature-resistant fabrics such as aramid fibers, PBI fabrics, carbon fiber fabrics and other high-temperature-resistant fibers so as to obtain the properties of antibiosis, photosensitive degradation, radiation resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of zinc oxide materials, in particular to a preparation method for in-situ synthesis of zinc oxide emulsion foaming materials. Background technique [0002] In the past, people just rubbed zinc oxide lotion on the nose and cheeks to prevent the damage caused by the sun. The cushion mainly adopts foamed plastics as the base material, and commonly used ones include emulsion foamed rubber, polyurethane foamed plastics, and recycled foamed plastics. Emulsion foam rubber is made of natural rubber emulsion through foaming process. It can be processed into a hollow form with a pencil-shaped hole in the middle, making it softer and more breathable. It can also be processed into pinhole-shaped sheets, blocks or any desired shape. Polyurethane foam plastic is a by-product of petrochemical industry, and it was the earliest product in the 1940s. It is obtained by mixing the components together to produce a gas that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/00C08L79/08C08L27/18C08K3/22D06M11/44D06M15/256D06M15/59D06M23/04D06M101/36D06M101/30
CPCC08J9/0066D06M11/44D06M15/256D06M15/59D06M23/04C08J2379/08C08J2327/18D06M2101/36D06M2101/30
Inventor 刘艺张训龙张锦
Owner ANHUI JINHUA ZINC OXIDE CO LTD
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