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Organic-inorganic composite emulsion for metal surface treatment

A technology of metal surface treatment and inorganic compounding, applied in the direction of coating, etc., can solve the problems of affecting the modification effect, difficulty in uniform dispersion, etc., and achieve the effect of saving operating costs and simplifying the process

Inactive Publication Date: 2018-11-16
CHANGZHOU VOCATIONAL INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In view of the above-mentioned technical problems in the prior art, the purpose of the present invention is to solve the problem that the traditional emulsion is difficult to disperse uniformly after adding inorganic nanoparticle fillers, which affects the modification effect, and find out a kind of organic phase and inorganic phase dispersed evenly, which is suitable for use in Preparation method of organic-inorganic composite polyacrylate emulsion actually used in fields such as coatings

Method used

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  • Organic-inorganic composite emulsion for metal surface treatment
  • Organic-inorganic composite emulsion for metal surface treatment
  • Organic-inorganic composite emulsion for metal surface treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] To prepare the organic-inorganic composite emulsion described in this patent, the required raw materials are as follows (parts by mass):

[0038]

[0039] Wherein, the acryloyloxyethyltrimethylammonium chloride is an aqueous mixture, and the content of acryloyloxyethyltrimethylammonium chloride is 78wt%: the methacryloyloxyethyltrimethylammonium chloride Ammonium is an aqueous mixture, and the content of methacryloxyethyltrimethylammonium chloride is 80wt%.

[0040] Concrete preparation method comprises the following steps:

[0041] 1) Drop 30 parts of deionized water and 5 parts of titanium dioxide nanoparticles into a small test reaction kettle made of quartz with 2 commercially available common high-pressure mercury lamps on the outside, and pass Nitrogen gas was used to purge the inside of the reactor.

[0042] 2) After heating up to 45±2°C under stirring, turn on the high-pressure mercury lamp to irradiate from the side of the reactor. After 15 minutes, pump 1...

Embodiment 2

[0046] To prepare the organic-inorganic composite emulsion described in this patent, the required raw materials are as follows (parts by mass):

[0047]

[0048] Wherein, the acryloyloxyethyltrimethylammonium chloride is an aqueous mixture, and the content of acryloyloxyethyltrimethylammonium chloride is 78wt%: the methacryloyloxyethyltrimethylammonium chloride Ammonium is an aqueous mixture, and the content of methacryloxyethyltrimethylammonium chloride is 80wt%.

[0049] Concrete preparation method comprises the following steps:

[0050] 1) Put 23 parts of deionized water and 15 parts of neutral titanium sol into a reaction kettle equipped with a jacketed water bath device, a stirring device and a feeding device, and an explosion-proof LED ultraviolet lamp for photocuring is installed on the inside of the top cover, and pass into Nitrogen was used to purge the interior of the device.

[0051] 2) After heating up to 45±2°C under stirring, turn on the ultraviolet light so...

Embodiment 3

[0055] To prepare the organic-inorganic composite emulsion described in this patent, the required raw materials are as follows (parts by mass):

[0056]

[0057] Wherein, said diallyl dimethyl ammonium chloride is an aqueous mixture, and the content of diallyl dimethyl ammonium chloride is 65 wt%.

[0058] Concrete preparation method comprises the following steps:

[0059] 1) Put 33 parts of deionized water and 15 parts of neutral titanium sol into a reaction kettle equipped with a jacketed water bath device, a stirring device and a feeding device, and an explosion-proof LED ultraviolet lamp for photocuring is installed on the inside of the top cover, and pass into Nitrogen was used to purge the interior of the device.

[0060] 2) After heating up to 45±2°C under stirring, turn on the ultraviolet light source to irradiate above the liquid level in the kettle, and pump 1 part of acrylic acid and 24 parts of methyl methacrylate pre-mixed into the reaction kettle at a constan...

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Abstract

The invention belongs to the technical field of metal surface treatment, and provides an organic-inorganic composite emulsion for use in the field of metal surface treatment and a preparation method thereof. The organic-inorganic composite emulsion is composed of the following raw materials in parts by weight: 5-15 parts of titanium dioxide nanoparticles; 1 part of acrylic acid; 24-36 parts of methyl methacrylate; 17-28 parts of n-butyl acrylate; 5 to 7 parts of methacrylic acid-dimethylaminoethyl ester; 0 to 1.5 parts of 65 wt% diallyldimethylammonium chloride; 0 to 2 parts of 78 wt% acryloyloxyethyltrimethylammonium chloride; 0 to 3.5 parts of 80wt% methacryloyloxyethyltrimethylammonium chloride; and 23 to 33 parts of water. The titanium dioxide nanoparticles act as a modifier for the emulsion and are used as a photoinitiator. Finally, the titanium dioxide nanoparticles are attached to one end of a polymer chain. Organic and inorganic phases are connected by chemical bonds, and separation and enrichment of the organic and inorganic phases does not occur in various environments. The surface of the polymer in the emulsion is positively charged and has good adhesion to a metal.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to an organic-inorganic composite emulsion used in the field of metal surface treatment. Background technique [0002] As an important raw material for coatings and adhesives, polyacrylate aqueous emulsion has the advantages of good film-forming properties, easy adjustment of formula, convenient production, excellent construction performance, and good color retention. It has received widespread attention since its inception. It has been widely used in many related fields. However, the mechanical properties and heat resistance of polyacrylate emulsion after film formation are not good, which limits its application in certain fields. [0003] It is well known that adding a small amount of inorganic nanoparticles to the emulsion used for film-forming materials can greatly improve the hardness, scratch resistance, heat resistance, gloss and adhesion of coatings. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/34C08F2/44C08F4/00C09D133/08C09D7/61
CPCC08F2/44C08F4/00C08F220/18C08K2003/2241C09D133/064C09D7/61C08F220/1804C08K3/22C08F220/14C08F220/06C08F220/34
Inventor 孙致平
Owner CHANGZHOU VOCATIONAL INST OF ENG
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