阅读说明：本技术 一种丙烯酸低温烘干阴极电泳漆及其制备方法 (Acrylic acid low-temperature drying cathode electrophoretic paint and preparation method thereof ) 是由 刘锐 于 2020-06-16 设计创作，主要内容包括：本发明公开了一种丙烯酸低温烘干阴极电泳漆及其制备方法,其原料按重量份比包括：丙二醇甲醚110-130份,丙二醇乙醚115-135份,丙二醇丙醚115-135份,丙二醇丁醚140-160份,丁二烯10-30份,丙烯酸甲酯215-235份,1-丙烯酸乙酯290-310份,2-丙烯酸乙酯15-35份,1-乙二醇单丁醚40-60份,2-乙二醇单丁醚4-8份,1-异丙醇45-65份,2-异丙醇15-35份,固化剂70-90份,单丁醚20-40份,丁酮35-55份,中和剂5-9份,纯水38-58份,固化剂为小分子树脂,中和剂为乳酸,丁二烯、丙烯酸甲酯、丙烯酸乙酯为单体材料,本发明涉及电泳漆技术领域。该丙烯酸低温烘干阴极电泳漆及其制备方法,采用此技术配方,相较于现有技术,该配方具有耐候性好、盐雾时间长、流平性好、烘干温度低的优点。(The invention discloses an acrylic acid low-temperature drying cathode electrophoretic paint and a preparation method thereof, wherein the acrylic acid low-temperature drying cathode electrophoretic paint comprises the following raw materials in parts by weight: 130 parts of propylene glycol methyl ether 110-containing material, 135 parts of propylene glycol ethyl ether 115-containing material, 135 parts of propylene glycol propyl ether 115-containing material, 160 parts of propylene glycol butyl ether 140-containing material, 10-30 parts of butadiene, 215 parts of methyl acrylate 235 parts, 290 parts of 1-ethyl acrylate-containing material, 15-35 parts of 2-ethyl acrylate, 40-60 parts of 1-ethylene glycol monobutyl ether, 4-8 parts of 2-ethylene glycol monobutyl ether, 45-65 parts of 1-isopropanol, 15-35 parts of 2-isopropanol, 70-90 parts of curing agent, 20-40 parts of monobutyl ether, 35-55 parts of butanone, 5-9 parts of neutralizing agent, 38-58 parts of pure water, small molecular resin as curing agent, lactic acid, butadiene and methyl acrylate as neutralizing agent, the invention discloses a preparation method of an electrophoretic paint, which takes ethyl acrylate as a monomer material and relates to the technical field of electrophoretic paints. Compared with the prior art, the acrylic acid low-temperature drying cathode electrophoretic paint and the preparation method thereof have the advantages of good weather resistance, long salt spray time, good leveling property and low drying temperature.)

1. The formula of the acrylic acid low-temperature drying cathode electrophoretic paint is characterized in that: the raw materials comprise the following components in parts by weight: 130 parts of propylene glycol methyl ether 110-containing material, 135 parts of propylene glycol ethyl ether 115-containing material, 135 parts of propylene glycol propyl ether 115-containing material, 160 parts of propylene glycol butyl ether 140-containing material, 10-30 parts of butadiene, 215 parts of methyl acrylate 235 parts, 290 parts of 1-ethyl acrylate-containing material, 15-35 parts of 2-ethyl acrylate, 40-60 parts of 1-ethylene glycol monobutyl ether, 4-8 parts of 2-ethylene glycol monobutyl ether, 45-65 parts of 1-isopropanol, 15-35 parts of 2-isopropanol, 70-90 parts of curing agent, 20-40 parts of monobutyl ether, 35-55 parts of butanone, 5-9 parts of neutralizing agent and 38-58 parts of pure water.

2. The formula of the acrylic acid low-temperature drying cathode electrophoretic paint according to claim 1, wherein the formula comprises the following components in percentage by weight: the raw materials comprise the following components in parts by weight: 110 parts of propylene glycol methyl ether, 115 parts of propylene glycol ethyl ether, 115 parts of propylene glycol propyl ether, 140 parts of propylene glycol butyl ether, 10 parts of butadiene, 215 parts of methyl acrylate, 290 parts of 1-ethyl acrylate, 15 parts of 2-ethyl acrylate, 40 parts of 1-ethylene glycol monobutyl ether, 4 parts of 2-ethylene glycol monobutyl ether, 45 parts of 1-isopropanol, 15 parts of 2-isopropanol, 70 parts of curing agent, 20 parts of monobutyl ether, 35 parts of butanone, 5 parts of neutralizing agent and 38 parts of pure water.

3. The formula of the acrylic acid low-temperature drying cathode electrophoretic paint according to claim 1, wherein the formula comprises the following components in percentage by weight: the raw materials comprise the following components in parts by weight: 130 parts of propylene glycol methyl ether, 135 parts of propylene glycol ethyl ether, 135 parts of propylene glycol propyl ether, 160 parts of propylene glycol butyl ether, 30 parts of butadiene, 235 parts of methyl acrylate, 310 parts of 1-ethyl acrylate, 35 parts of 2-ethyl acrylate, 60 parts of 1-ethylene glycol monobutyl ether, 8 parts of 2-ethylene glycol monobutyl ether, 65 parts of 1-isopropanol, 35 parts of 2-isopropanol, 90 parts of curing agent, 40 parts of monobutyl ether, 55 parts of butanone, 9 parts of neutralizer and 58 parts of pure water.

4. The formula of the acrylic acid low-temperature drying cathode electrophoretic paint according to claim 1, wherein the formula comprises the following components in percentage by weight: the raw materials comprise the following components in parts by weight: 120 parts of propylene glycol methyl ether, 125 parts of propylene glycol ethyl ether, 125 parts of propylene glycol propyl ether, 150 parts of propylene glycol butyl ether, 20 parts of butadiene, 225 parts of methyl acrylate, 300 parts of 1-ethyl acrylate, 25 parts of 2-ethyl acrylate, 50 parts of 1-ethylene glycol monobutyl ether, 6 parts of 2-ethylene glycol monobutyl ether, 55 parts of 1-isopropanol, 25 parts of 2-isopropanol, 80 parts of curing agent, 30 parts of monobutyl ether, 45 parts of butanone, 7 parts of neutralizing agent and 48 parts of pure water.

5. The formula of the acrylic acid low-temperature drying cathode electrophoretic paint according to claim 1, wherein the formula comprises the following components in percentage by weight: the curing agent is micromolecular resin, and the neutralizer is lactic acid.

6. The acrylic acid low-temperature drying cathode electrophoretic paint and the preparation method thereof according to claim 1, characterized in that: butadiene, methyl acrylate and ethyl acrylate are monomer materials.

7. The acrylic acid low-temperature drying cathode electrophoretic paint and the preparation method thereof according to claim 1, characterized in that: propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, propylene glycol butyl ether, 1-ethylene glycol monobutyl ether, 2-ethylene glycol monobutyl ether, 1-isopropanol, 2-isopropanol, monobutyl ether and butanone are used as solvents.

8. The preparation method of the acrylic acid low-temperature drying cathode electrophoretic paint according to any one of claims 1 to 7, wherein the preparation method comprises the following steps: the preparation method specifically comprises the following steps:

s1, mixing propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, propylene glycol butyl ether, butadiene, methyl acrylate and 1-ethyl acrylate uniformly, and transferring into a dropwise adding tank;

s2, when the temperature in the reaction kettle rises to 85-90 ℃, 1-ethylene glycol monobutyl ether and 1-isopropanol are dripped, the temperature is strictly controlled in the middle, and the dripping is finished within 5.5-6.0 h;

s3, and then preserving heat for 1h at 85-90 ℃;

s4, uniformly mixing 2-isopropanol and 2-ethyl acrylate, and then starting to drip, wherein the temperature in the reaction kettle is kept at 85-90 ℃, and the dripping is completed within 1 hour;

s5, preserving the heat at 85-90 ℃ for 1.5h, and then measuring the viscosity of the solvent;

s6, cooling to 50-55 ℃, adding a curing agent, monobutyl ether and butanone, keeping the temperature for 0.5h, and sampling to measure the solid content;

s7, keeping the temperature for 0.5h, adding lactic acid in the formula, and then continuing stirring;

s8, adding a mixture of 2-ethylene glycol monobutyl ether and water to adjust the solid part according to the measurement result, wherein in the mixture of 2-ethylene glycol monobutyl ether and water, the ratio of 2-ethylene glycol monobutyl ether to water is 1: 8;

s9, circularly stirring for 0.5h, and completing the preparation;

s10, and finally, filtering and packaging.

Technical Field

The invention relates to the technical field of electrophoretic paint, in particular to acrylic acid low-temperature drying cathode electrophoretic paint and a preparation method thereof.

Background

Electrophoretic paints, also called electrocoats, are also called "electrophoretic paints" and are not used by many people. Electrophoresis has begun to become more prevalent as the deficiencies of conventional spray coatings continue to emerge. Electrophoretic paints are also starting to be updated continuously, from anode electrophoretic paints to cathode electrophoretic paints, from single-component electrophoretic paints to two-component electrophoretic paints, the development of electrophoretic paints also promotes the development of electrophoretic coating, so that more products do not use spraying technology but use electrophoresis. The acrylic acid low-temperature drying cathode electrophoretic paint is an acrylic polyurethane water-based paint synthesized by adopting the latest technology. The paint has the advantages of good weather resistance, good storage stability, low curing temperature, good leveling property of a paint film, long salt spray time and the like. Is a highly decorative acrylic acid cathode electrophoretic coating. Can be widely applied to various electroplated hardware such as jewelry, lamp decorations, spectacle frames, taps, door and window handles and the like

The existing acrylic acid low-temperature drying cathode electrophoretic paint is an acrylic polyurethane water-based paint synthesized by adopting the latest technology, but with the continuous development of the market and the continuous improvement of the requirements of customers on the weather resistance and the salt fog resistance of products, the existing acrylic acid low-temperature drying cathode electrophoretic paint has low weather resistance and short salt fog resistance time, and the existing acrylic acid low-temperature drying cathode electrophoretic paint can not completely meet the requirements.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an acrylic acid low-temperature drying cathode electrophoretic paint and a preparation method thereof, and solves the problems that the existing acrylic acid low-temperature drying cathode electrophoretic paint has low weather resistance and short salt spray resistance time and can not completely meet the requirements.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the formula of the acrylic acid low-temperature drying cathode electrophoretic paint comprises the following raw materials in parts by weight: 130 parts of propylene glycol methyl ether 110-containing material, 135 parts of propylene glycol ethyl ether 115-containing material, 135 parts of propylene glycol propyl ether 115-containing material, 160 parts of propylene glycol butyl ether 140-containing material, 10-30 parts of butadiene, 215 parts of methyl acrylate 235 parts, 290 parts of 1-ethyl acrylate-containing material, 15-35 parts of 2-ethyl acrylate, 40-60 parts of 1-ethylene glycol monobutyl ether, 4-8 parts of 2-ethylene glycol monobutyl ether, 45-65 parts of 1-isopropanol, 15-35 parts of 2-isopropanol, 70-90 parts of curing agent, 20-40 parts of monobutyl ether, 35-55 parts of butanone, 5-9 parts of neutralizing agent and 38-58 parts of pure water.

Preferably, the raw materials comprise the following components in parts by weight: 110 parts of propylene glycol methyl ether, 115 parts of propylene glycol ethyl ether, 115 parts of propylene glycol propyl ether, 140 parts of propylene glycol butyl ether, 10 parts of butadiene, 215 parts of methyl acrylate, 290 parts of 1-ethyl acrylate, 15 parts of 2-ethyl acrylate, 40 parts of 1-ethylene glycol monobutyl ether, 4 parts of 2-ethylene glycol monobutyl ether, 45 parts of 1-isopropanol, 15 parts of 2-isopropanol, 70 parts of curing agent, 20 parts of monobutyl ether, 35 parts of butanone, 5 parts of neutralizing agent and 38 parts of pure water.

Preferably, the raw materials comprise the following components in parts by weight: 130 parts of propylene glycol methyl ether, 135 parts of propylene glycol ethyl ether, 135 parts of propylene glycol propyl ether, 160 parts of propylene glycol butyl ether, 30 parts of butadiene, 235 parts of methyl acrylate, 310 parts of 1-ethyl acrylate, 35 parts of 2-ethyl acrylate, 60 parts of 1-ethylene glycol monobutyl ether, 8 parts of 2-ethylene glycol monobutyl ether, 65 parts of 1-isopropanol, 35 parts of 2-isopropanol, 90 parts of curing agent, 40 parts of monobutyl ether, 55 parts of butanone, 9 parts of neutralizer and 58 parts of pure water.

Preferably, the raw materials comprise the following components in parts by weight: 120 parts of propylene glycol methyl ether, 125 parts of propylene glycol ethyl ether, 125 parts of propylene glycol propyl ether, 150 parts of propylene glycol butyl ether, 20 parts of butadiene, 225 parts of methyl acrylate, 300 parts of 1-ethyl acrylate, 25 parts of 2-ethyl acrylate, 50 parts of 1-ethylene glycol monobutyl ether, 6 parts of 2-ethylene glycol monobutyl ether, 55 parts of 1-isopropanol, 25 parts of 2-isopropanol, 80 parts of curing agent, 30 parts of monobutyl ether, 45 parts of butanone, 7 parts of neutralizing agent and 48 parts of pure water.

Preferably, the curing agent is a small molecule resin, and the neutralizing agent is lactic acid.

Preferably, butadiene, methyl acrylate, ethyl acrylate are the monomer materials.

Preferably, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, propylene glycol butyl ether, 1-ethylene glycol monobutyl ether, 2-ethylene glycol monobutyl ether, 1-isopropanol, 2-isopropanol, monobutyl ether and butanone are used as solvents.

The invention also discloses a preparation method of the acrylic acid low-temperature drying cathode electrophoretic paint, which specifically comprises the following steps:

s1, mixing propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, propylene glycol butyl ether, butadiene, methyl acrylate and 1-ethyl acrylate uniformly, and transferring into a dropwise adding tank;

s2, when the temperature in the reaction kettle rises to 85-90 ℃, 1-ethylene glycol monobutyl ether and 1-isopropanol are dripped, the temperature is strictly controlled in the middle, and the dripping is finished within 5.5-6.0 h;

s3, and then preserving heat for 1h at 85-90 ℃;

s4, uniformly mixing 2-isopropanol and 2-ethyl acrylate, and then starting to drip, wherein the temperature in the reaction kettle is kept at 85-90 ℃, and the dripping is completed within 1 hour;

s5, preserving the heat at 85-90 ℃ for 1.5h, and then measuring the viscosity of the solvent;

s6, cooling to 50-55 ℃, adding a curing agent, monobutyl ether and butanone, keeping the temperature for 0.5h, and sampling to measure the solid content;

s7, keeping the temperature for 0.5h, adding lactic acid in the formula, and then continuing stirring;

s8, adding a mixture of 2-ethylene glycol monobutyl ether and water to adjust the solid part according to the measurement result, wherein in the mixture of 2-ethylene glycol monobutyl ether and water, the ratio of 2-ethylene glycol monobutyl ether to water is 1: 8;

s9, circularly stirring for 0.5h, and completing the preparation;

s10, and finally, filtering and packaging.

(III) advantageous effects

The invention provides acrylic acid low-temperature drying cathode electrophoretic paint and a preparation method thereof. Compared with the prior art, the method has the following beneficial effects:

(1) the formula of the acrylic acid low-temperature drying cathode electrophoretic paint comprises the following raw materials in parts by weight: 130 parts of propylene glycol methyl ether 110-containing material, 135 parts of propylene glycol ethyl ether 115-containing material, 135 parts of propylene glycol propyl ether 115-containing material, 160 parts of propylene glycol butyl ether 140-containing material, 10-30 parts of butadiene, 215 parts of methyl acrylate 235 parts, 290 parts of 1-ethyl acrylate 310 parts, 15-35 parts of 2-ethyl acrylate, 40-60 parts of 1-ethylene glycol monobutyl ether, 4-8 parts of 2-ethylene glycol monobutyl ether, 45-65 parts of 1-isopropanol, 15-35 parts of 2-isopropanol, 70-90 parts of curing agent, 20-40 parts of monobutyl ether, 35-55 parts of butanone, 5-9 parts of neutralizing agent and 38-58 parts of pure water, wherein the curing agent is micromolecule resin, and the neutralizing agent is lactic acid Good leveling property and low drying temperature.

(2) The preparation method of the acrylic acid low-temperature drying cathode electrophoretic paint comprises the steps of mixing and uniformly stirring propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, propylene glycol butyl ether, butadiene, methyl acrylate and 1-ethyl acrylate, transferring the mixture into a dripping tank, and adding the mixture by stirring to uniformly mix all solutions and prevent agglomeration among molecules.

(3) According to the preparation method of the acrylic acid low-temperature drying cathode electrophoretic paint, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, propylene glycol butyl ether, butadiene, methyl acrylate and 1-ethyl acrylate are mixed and stirred uniformly and then transferred into a dripping tank, and the addition amount is controlled relatively accurately by adopting a dripping mode, so that the problem that the mixing of all solutions is not uniform due to excessive addition at one time is avoided.

Drawings

FIG. 1 is a statistical table of comparative experimental data according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the embodiment of the present invention provides three technical solutions: an acrylic acid low-temperature drying cathode electrophoretic paint and a preparation method thereof specifically comprise the following embodiments: