阅读说明：本技术 一种健康多功能液态涂膜及其制备方法 (Healthy multifunctional liquid coating film and preparation method thereof ) 是由 祝艳艳 郭小金 何朝兴 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种健康多功能液态涂膜及其制备方法,包括下述重量份的原料,二环噁唑烷化合物10-15份、脂肪族氨基树脂17-35份、亚己基二异氰酸酯多聚物15-28份、水性溶剂5-20份、助剂1-5份。本发明的有益效果为：本发明所述的健康多功能液态涂膜中所含原料水与二环噁唑烷化合物、脂肪族氨基树脂、亚己基二异氰酸酯多聚物混合后,水与亚己基二异氰酸酯多聚物反应较慢,保证了原料之间的充分反应,增加了交联密度,使其具有强大的耐溶剂性、耐冲击强度,其光泽性与硬度也得到了提高。(The invention discloses a healthy multifunctional liquid coating and a preparation method thereof, wherein the healthy multifunctional liquid coating comprises the following raw materials, by weight, 10-15 parts of a dicyclo oxazolidine compound, 17-35 parts of aliphatic amino resin, 15-28 parts of a hexamethylene diisocyanate polymer, 5-20 parts of an aqueous solvent and 1-5 parts of an auxiliary agent. The invention has the beneficial effects that: after raw material water contained in the healthy multifunctional liquid coating is mixed with the dicyclo oxazolidine compound, the aliphatic amino resin and the hexamethylene diisocyanate polymer, the water and the hexamethylene diisocyanate polymer react slowly, so that the raw materials are fully reacted, the crosslinking density is increased, the healthy multifunctional liquid coating has strong solvent resistance and impact strength, and the glossiness and the hardness are improved.)

1. The multifunctional health liquid coating is characterized by comprising the following raw materials, by weight, 10-15 parts of a dicyclo oxazolidine compound, 17-35 parts of an aliphatic amino resin, 15-28 parts of a hexamethylene diisocyanate polymer, 5-20 parts of an aqueous solvent and 1-5 parts of an auxiliary agent.

2. The multifunctional healthy liquid coating film according to claim 1, comprising 12 to 14 parts by weight of a dicyclooxazolidine compound, 20 to 30 parts by weight of an aliphatic amino resin, 18 to 25 parts by weight of a hexamethylene diisocyanate polymer, 8 to 16 parts by weight of an aqueous solvent, and 2 to 4 parts by weight of an auxiliary agent.

3. The multifunctional health liquid coating film according to claim 1, comprising 13 parts by weight of the dicyclooxazolidine compound, 25 parts by weight of the aliphatic amino resin, 20 parts by weight of the hexamethylene diisocyanate polymer, 16 parts by weight of the aqueous solvent, and 3 parts by weight of the auxiliary agent.

4. The healthy multifunctional liquid coating film according to claim 1, wherein the aqueous solvent is water.

5. The healthy multifunctional liquid coating film according to claim 1, wherein the auxiliary agent comprises the following raw materials: pigment, dispersant, activating agent, defoaming agent, anti-settling agent and leveling agent.

6. The method for preparing a multifunctional health liquid coating film according to any one of claims 1 to 5, comprising the steps of:

(1) adding a dicyclo oxazolidine compound, aliphatic amino resin and a hexamethylene diisocyanate polymer into an aqueous solvent, and uniformly mixing and stirring to obtain a mixed solution;

(2) and adding an auxiliary agent into the mixed solution, and uniformly mixing and stirring to obtain the healthy multifunctional liquid coating.

7. The method for preparing a health multifunctional liquid coating film according to claim 6, wherein in the step (1), the temperature of mixing and stirring is 0-45 ℃, and the time of mixing and stirring at the temperature is 0.1-0.5 h.

Technical Field

The invention belongs to the technical field of coating, and particularly relates to a healthy multifunctional liquid coating and a preparation method thereof.

Background

With the continuous development of the coating market, more and more coating brands fill the market, and the phenomenon that some products contain heavy metals such as mercury, lead and cadmium, and harmful substances such as formaldehyde and benzene seriously exceed the standard is avoided. As people pay more attention to environmental protection and health, the health of indoor environment has received more and more attention.

At present, the liquid coating sold in the market is basically a coating formed by compounding potassium silicate or silica sol with an organic synthetic resin emulsion film, the difference is only that the addition amount is large or small, although the flexibility of a paint film is good, the organic synthetic resin emulsion is added, so the coating can be combusted, smoke is generated during combustion, and in addition, the coating is easy to grow mildew if no mildew inhibitor is added, and the coating does not accord with the concept of green and environmental protection if the mildew inhibitor is added, and also contains limited substances such as VOC.

Disclosure of Invention

The invention aims to provide a healthy multifunctional liquid coating film with a lasting antibacterial function and a preparation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

a healthy multifunctional liquid coating film comprises, by weight, 10-15 parts of a dicyclo oxazolidine compound, 17-35 parts of an aliphatic amino resin, 15-28 parts of a hexamethylene diisocyanate polymer, 5-20 parts of an aqueous solvent, and 1-5 parts of an auxiliary agent.

Bicyclic oxazolidine compounds, as used herein, bicyclic oxazolidine compounds of the formula:

the dicyclo oxazolidine compound is one of main film forming matters of the film, plays a role of a reactive water scavenger and a reactive toughening agent in a film coating system, and is a key factor for improving the maximum bubble-free film thickness and flexibility of the film coating system which can be achieved by one-time construction.

The molecular formula of the aliphatic amino resin is as follows:

R＝N＝C＝O

the aliphatic amino resin is one of main film forming materials of the coating film, and can shorten the curing time of the coating film so as to ensure that the coating film has excellent weather resistance and corrosion resistance.

The molecular formula of the hexamethylene diisocyanate polymer is as follows:

the healthy multifunctional liquid coating film comprises, by weight, 12-14 parts of a dicyclo oxazolidine compound, 20-30 parts of an aliphatic amino resin, 18-25 parts of a hexamethylene diisocyanate polymer, 8-16 parts of an aqueous solvent and 2-4 parts of an auxiliary agent.

The healthy multifunctional liquid coating film comprises, as a preferred embodiment, 13 parts by weight of a dicyclooxazole alkyl compound, 25 parts by weight of an aliphatic amino resin, 20 parts by weight of a hexamethylene diisocyanate polymer, 16 parts by weight of an aqueous solvent and 3 parts by weight of an auxiliary agent.

The above-mentioned health multifunctional liquid coating film, as a preferred embodiment, the aqueous solvent is water.

The healthy multifunctional liquid coating film is characterized in that the auxiliary agent comprises the following raw materials: pigment, dispersant, activating agent, defoaming agent, anti-settling agent and leveling agent.

The dispersant is a surfactant with two opposite properties of lipophilicity and hydrophilcity in a molecule, can uniformly disperse solid and liquid particles of inorganic and organic pigments which are difficult to dissolve in liquid, and can prevent the particles from settling and coagulating to form the amphiphilic agent required by stable suspension. Commonly used dispersants are ethylene bis stearamide, glyceryl monostearate, glyceryl tristearate, and the like.

The activator can enhance the adsorption capacity of the mineral surface to the collecting agent, and is used for eliminating the action of an inhibitor by changing the chemical composition of the mineral surface, so that the mineral surface is easy to adsorb the collecting agent. Such as ethylene diamine phosphate, propylene diamine phosphate, xylene, sodium fluorosilicate, ammonium sulfate, ammonium chloride, ferrous sulfate, ammonium hydroxide, etc.

Defoaming agents are substances that reduce the surface tension of water, solutions, suspensions, etc., prevent the formation of foam, or reduce or eliminate the original foam. As the defoaming agent, a polyether type defoaming agent, a trialkyl melamine, a dialkyl phosphate and the like are generally used.

The anti-settling agent is a rheological control agent of the coating, and enables the coating to have thixotropy and greatly improve the viscosity. The anti-settling agent plays an important role in modern coatings, and has important influence on the production, storage, coating and film coating performance of the coatings, so that the use of the anti-settling agent is increasingly emphasized. Commonly used anti-settling agents are organobentonite, fumed silica, and the like.

The leveling agent is a common paint auxiliary agent and can promote the paint to form a flat, smooth and uniform coating film in the drying film-forming process. Can effectively reduce the surface tension of the finishing liquid and improve the leveling property and uniformity of the finishing liquid. The leveling agent used is polydimethylsiloxane, acrylate type, etc.

In a second aspect of the invention, a method for preparing a healthy multifunctional liquid coating film is provided, which comprises the following steps:

(1) adding a dicyclo oxazolidine compound, aliphatic amino resin and a hexamethylene diisocyanate polymer into an aqueous solvent, and uniformly mixing and stirring to obtain a mixed solution;

(2) and adding an auxiliary agent into the mixed solution, and uniformly mixing and stirring to obtain the healthy multifunctional liquid coating.

The flexible long chain of the polyol in the aliphatic amino resin forms a soft segment, the isocyanate forms a hard segment, and the soft segment and the hard segment are alternately arranged to form a repeating structural unit.

In the above method for preparing a healthy multifunctional liquid coating film, as a preferred embodiment, in the step (1), the mixing and stirring temperature is 0-45 ℃, and the mixing and stirring time at the temperature is 0.1-0.5 h.

The invention has the beneficial effects that: after raw material water contained in the healthy multifunctional liquid coating is mixed with the dicyclo oxazolidine compound, the aliphatic amino resin and the hexamethylene diisocyanate polymer, the water and the hexamethylene diisocyanate polymer react slowly, so that the raw materials are fully reacted, the crosslinking density is increased, the healthy multifunctional liquid coating has strong solvent resistance and impact strength, and the glossiness and the hardness are improved.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

In the examples of the present invention, 1 part by weight represents 1 g.

Example 1

A healthy multifunctional liquid coating comprises the following raw materials in parts by weight: 10 parts of dicyclo oxazolidine compound, 17 parts of aliphatic amino resin, 15 parts of hexamethylene diisocyanate polymer, 5 parts of water and 1 part of auxiliary agent;

the auxiliary agent comprises the following raw materials: pigment, dispersant, activating agent, defoaming agent, anti-settling agent and leveling agent.

The preparation method of the healthy multifunctional liquid coating film in the embodiment 1 comprises the following steps:

(1) adding a dicyclo oxazolidine compound, aliphatic amino resin and a hexamethylene diisocyanate polymer into an aqueous solvent, mixing and stirring for 0.3h at the stirring temperature of 30 ℃, and uniformly mixing and stirring to obtain a mixed solution;

(2) and adding an auxiliary agent into the mixed solution, and uniformly mixing and stirring to obtain the healthy multifunctional liquid coating.

Example 2

A healthy multifunctional liquid coating comprises the following raw materials in parts by weight: 12 parts of dicyclo oxazolidine compound, 20 parts of aliphatic amino resin, 18 parts of hexamethylene diisocyanate polymer, 8 parts of water and 2 parts of auxiliary agent;

the auxiliary agent comprises the following raw materials: pigment, dispersant, activating agent, defoaming agent, anti-settling agent and leveling agent.

The preparation method of the healthy multifunctional liquid coating film in the embodiment 2 comprises the following steps:

(1) adding a dicyclo oxazolidine compound, aliphatic amino resin and a hexamethylene diisocyanate polymer into an aqueous solvent, mixing and stirring for 0.2h at the stirring temperature of 35 ℃, and uniformly mixing and stirring to obtain a mixed solution;

(2) and adding an auxiliary agent into the mixed solution, and uniformly mixing and stirring to obtain the healthy multifunctional liquid coating.

Example 3

A healthy multifunctional liquid coating comprises the following raw materials in parts by weight: 13 parts of dicyclo oxazolidine compound, 25 parts of aliphatic amino resin, 20 parts of hexamethylene diisocyanate polymer, 16 parts of water and 3 parts of auxiliary agent;

the auxiliary agent comprises the following raw materials: pigment, dispersant, activating agent, defoaming agent, anti-settling agent and leveling agent.

The preparation method of the healthy multifunctional liquid coating film in the embodiment 3 comprises the following steps:

(1) adding a dicyclo oxazolidine compound, aliphatic amino resin and a hexamethylene diisocyanate polymer into an aqueous solvent, mixing and stirring for 0.2h at the stirring temperature of 35 ℃, and uniformly mixing and stirring to obtain a mixed solution;

(2) and adding an auxiliary agent into the mixed solution, and uniformly mixing and stirring to obtain the healthy multifunctional liquid coating.

Example 4

A healthy multifunctional liquid coating comprises the following raw materials in parts by weight: 14 parts of dicyclo oxazolidine compound, 30 parts of aliphatic amino resin, 25 parts of hexamethylene diisocyanate polymer, 16 parts of water and 4 parts of auxiliary agent;

the auxiliary agent comprises the following raw materials: pigment, dispersant, activating agent, defoaming agent, anti-settling agent and leveling agent.

The preparation method of the healthy multifunctional liquid coating film in the embodiment 4 comprises the following steps:

(1) adding a dicyclo oxazolidine compound, aliphatic amino resin and a hexamethylene diisocyanate polymer into an aqueous solvent, mixing and stirring for 0.15h at the stirring temperature of 40 ℃, and uniformly mixing and stirring to obtain a mixed solution;

(2) and adding an auxiliary agent into the mixed solution, and uniformly mixing and stirring to obtain the healthy multifunctional liquid coating.

Example 5

A healthy multifunctional liquid coating comprises the following raw materials in parts by weight: 15 parts of dicyclo oxazolidine compound, 35 parts of aliphatic amino resin, 28 parts of hexamethylene diisocyanate polymer, 20 parts of water and 5 parts of auxiliary agent;

the auxiliary agent comprises the following raw materials: pigment, dispersant, activating agent, defoaming agent, anti-settling agent and leveling agent.

The preparation method of the healthy multifunctional liquid coating film in the embodiment 5 comprises the following steps:

(1) adding a dicyclo oxazolidine compound, aliphatic amino resin and a hexamethylene diisocyanate polymer into an aqueous solvent, mixing and stirring for 0.1h at the stirring temperature of 45 ℃, and uniformly mixing and stirring to obtain a mixed solution;

(2) and adding an auxiliary agent into the mixed solution, and uniformly mixing and stirring to obtain the healthy multifunctional liquid coating.

1. The safety study of the healthy multifunctional liquid coating film described in embodiment 1 of the present invention: the results of the study are shown in table 1:

table 1 safety study of liquid coating film according to the invention

As can be seen from table 1, the volatile organic compounds and free formaldehyde contained in the healthy multifunctional liquid coating film of the present invention are within a safe range, and heavy metals such as lead, cadmium, chromium, mercury, and the like are not detected, so that the health of people is not affected even when the liquid coating film of the present invention is used indoors, i.e., the liquid coating film of the present invention is a healthy and environment-friendly coating film.

2. The acid and alkali resistance of the healthy multifunctional liquid coating film is detected, and the detection result is shown in table 2:

table 2 study of acid and alkali resistance of liquid coating film according to the present invention

As can be seen from Table 2, the healthy multifunctional liquid coating film provided by the invention has good corrosion resistance, and does not generate the phenomena of foaming, cracking, falling off, wrinkling, discoloration and light loss after long-term use.

3. The detection results of the aging resistance of the healthy multifunctional liquid coating film are shown in the table 3:

TABLE 3 study of the aging resistance of the liquid coating films according to the invention

It can be seen from table 3 that the liquid coating film of the present invention has excellent aging resistance.

4. The detection results of the healthy multifunctional liquid coating film disclosed by the invention on the mould resistance are shown in the table 4:

table 4 detection of the resistance to moulds of a liquid paint film according to the invention

As can be seen from table 4, the liquid coating film according to the present invention has excellent mold resistance.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.