阅读说明：本技术 一种聚酯树脂分散乳液及制备工艺 (Polyester resin dispersion emulsion and preparation process thereof ) 是由 李烈栋 张良务 于 2019-11-19 设计创作，主要内容包括：本发明公开了一种聚酯树脂分散乳液及制备工艺,分散乳液组份按重量份数包括饱和聚酯树脂70-90份、四氟乙烯单体20-30份、全氟辛基磺酸钾10-20份、PH调节剂2-6份、去离子水30-40份和防冻剂1-3份,本发明制备工艺简单,制得的分散乳液分散效果好,具有良好的抗冻、耐高温性能,此外,能够有效的提高分散乳液的粘度,提高分散乳液的稳定性。(The invention discloses a polyester resin dispersion emulsion and a preparation process thereof, wherein the components of the dispersion emulsion comprise, by weight, 70-90 parts of saturated polyester resin, 20-30 parts of tetrafluoroethylene monomer, 10-20 parts of potassium perfluorooctyl sulfonate, 2-6 parts of pH regulator, 30-40 parts of deionized water and 1-3 parts of antifreeze agent.)

1. A polyester resin dispersion emulsion characterized by: the dispersed emulsion comprises, by weight, 70-90 parts of saturated polyester resin, 20-30 parts of tetrafluoroethylene monomer, 10-20 parts of potassium perfluorooctyl sulfonate, 2-6 parts of pH regulator, 30-40 parts of deionized water and 1-3 parts of antifreeze.

2. The polyester resin dispersion emulsion according to claim 1, wherein: the preferable component proportion of the dispersed emulsion component comprises 80 parts of saturated polyester resin, 25 parts of tetrafluoroethylene monomer, 15 parts of potassium perfluorooctyl sulfonate, 4 parts of PH regulator, 35 parts of deionized water and 2 parts of antifreeze.

3. The polyester resin dispersion emulsion according to claim 1, wherein: the pH regulator consists of 50% of diethylenetriamine, 20% of aniline and 30% of acetaldoxime.

4. The polyester resin dispersion emulsion according to claim 1, wherein: the antifreezing agent consists of 30% of potassium carbonate, 30% of calcium chloride, 20% of sodium carboxymethyl cellulose and 20% of graphite powder.

5. The preparation process for realizing the polyester resin dispersion emulsion according to claim 1 is characterized in that: the preparation process comprises the following steps:

A. firstly, mixing a tetrafluoroethylene monomer and potassium perfluorooctyl sulfonate, adding the mixture into a stirring tank, and stirring at a low speed of 80-120 rpm for 10-14 min to obtain a mixture A;

B. adding polyester resin, a pH regulator and deionized water into the mixture A, fully mixing, adding into a water bath kettle, heating in a water bath, and continuously stirring in the water bath heating process to obtain a mixture B;

C. and adding an antifreezing agent into the mixture B, fully stirring at normal temperature, adding into a constant-temperature dispersion bottle, and standing for 40min to obtain the dispersion emulsion.

6. The process according to claim 5, wherein the emulsion is prepared by: and the water bath heating temperature in the step B is 55-60 ℃, and the time is 15-30 min.

Technical Field

The invention relates to the technical field of preparation of dispersed emulsion, in particular to polyester resin dispersed emulsion and a preparation process thereof.

Background

In order to meet the environmental protection requirement and promote the sustainable and green environmental protection development of the automobile industry, the automobile coating is developing towards the direction of high solid content and powder coating, and the stability of the dispersed emulsion added in the existing automobile coating is poor, so that improvement is necessary.

Disclosure of Invention

The invention aims to provide a polyester resin dispersion emulsion and a preparation process thereof, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the polyester resin dispersion emulsion comprises, by weight, 70-90 parts of saturated polyester resin, 20-30 parts of tetrafluoroethylene monomer, 10-20 parts of potassium perfluorooctyl sulfonate, 2-6 parts of pH regulator, 30-40 parts of deionized water and 1-3 parts of antifreeze.

Preferably, the preferable component proportion of the dispersed emulsion component comprises 80 parts of saturated polyester resin, 25 parts of tetrafluoroethylene monomer, 15 parts of potassium perfluorooctyl sulfonate, 4 parts of pH regulator, 35 parts of deionized water and 2 parts of antifreeze.

Preferably, the pH regulator consists of 50% of diethylenetriamine, 20% of aniline and 30% of acetaldoxime.

Preferably, the antifreezing agent consists of 30% of potassium carbonate, 30% of calcium chloride, 20% of sodium carboxymethyl cellulose and 20% of graphite powder.

Preferably, the preparation process comprises the following steps:

A. firstly, mixing a tetrafluoroethylene monomer and potassium perfluorooctyl sulfonate, adding the mixture into a stirring tank, and stirring at a low speed of 80-120 rpm for 10-14 min to obtain a mixture A;

B. adding polyester resin, a pH regulator and deionized water into the mixture A, fully mixing, adding into a water bath kettle, heating in a water bath, and continuously stirring in the water bath heating process to obtain a mixture B;

C. and adding an antifreezing agent into the mixture B, fully stirring at normal temperature, adding into a constant-temperature dispersion bottle, and standing for 40min to obtain the dispersion emulsion.

Preferably, the water bath heating temperature in the step B is 55-60 ℃, and the time is 15-30 min.

Compared with the prior art, the invention has the beneficial effects that: the preparation process is simple, the prepared dispersion emulsion has good dispersion effect and good freezing resistance and high temperature resistance, and in addition, the viscosity of the dispersion emulsion can be effectively improved, and the stability of the dispersion emulsion is improved; the pH regulator added in the invention can effectively regulate the pH of the dispersion emulsion, has certain corrosion inhibition performance and enhances the stability of the dispersion emulsion; the added antifreezing agent has antifreezing and low temperature resistant performances, effectively ensures the antifreezing and anti-cracking performances of the dispersed emulsion, and ensures the usability of the dispersed emulsion at low temperature.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.

The invention provides the following technical scheme: the polyester resin dispersion emulsion comprises, by weight, 70-90 parts of saturated polyester resin, 20-30 parts of tetrafluoroethylene monomer, 10-20 parts of potassium perfluorooctyl sulfonate, 2-6 parts of pH regulator, 30-40 parts of deionized water and 1-3 parts of antifreeze.