阅读说明：本技术 一种防凝露涂料及其制备方法与应用 (Anti-condensation coating and preparation method and application thereof ) 是由 盘思伟 赵耀洪 钱艺华 王青 郭国伟 何山 方鹏飞 牛莉 李媛媛 于 2021-11-02 设计创作，主要内容包括：本发明公开了一种防凝露涂料及其制备方法与应用。涂料包括A组分和B组分；A组分包括氟碳树脂、丙二醇甲醚醋酸酯、乙酸丁酯、乙二醇丁醚、聚酮树脂、羟基丙烯酸树脂、分散剂、消泡剂、流平剂、固化促进剂、白色浆、黑色浆、防沉剂；B组分包括固化剂、乙酸丁酯、二甲苯。本发明的防凝露涂料基体树脂选用表面能较低的氟碳树脂,低表面能使得表面与水滴的黏附力降低,具有较好的憎水性,可起到良好的疏水效果；针对环网柜有多种基材的特点,通过添加适量的聚酮树脂和羟基丙烯酸,使得涂层对塑料、玻璃以及金属都具有良好的附着力,适用于多种基材的环网柜。(The invention discloses an anti-condensation coating and a preparation method and application thereof. The coating comprises a component A and a component B; the component A comprises fluorocarbon resin, propylene glycol monomethyl ether acetate, butyl acetate, ethylene glycol butyl ether, polyketone resin, hydroxyl acrylic resin, a dispersing agent, a defoaming agent, a leveling agent, a curing accelerator, white slurry, black slurry and an anti-settling agent; the component B comprises a curing agent, butyl acetate and xylene. The fluorocarbon resin with lower surface energy is selected as the matrix resin of the anti-condensation coating, the low surface energy reduces the adhesion between the surface and water drops, and the anti-condensation coating has better hydrophobicity and can play a good role in hydrophobicity; aiming at the characteristics that the ring main unit has various base materials, the coating has good adhesive force to plastics, glass and metals by adding a proper amount of polyketone resin and hydroxyacrylic acid, and is suitable for the ring main unit with various base materials.)

1. The anti-condensation coating is characterized by comprising a component A and a component B;

the component A comprises the following components in parts by mass: 52-56 parts of fluorocarbon resin, 14-16 parts of propylene glycol methyl ether acetate, 10-11 parts of butyl acetate, 1-2 parts of ethylene glycol butyl ether, 0.3-0.6 part of polyketone resin, 5-6 parts of hydroxyl acrylic resin, 0.3-0.4 part of dispersant, 0.2-0.3 part of defoamer, 0.2-0.3 part of flatting agent, 0.1-0.2 part of curing accelerator, 10-12 parts of white slurry, 0.2-0.3 part of black slurry and 0.1-0.2 part of anti-settling agent;

the component B comprises the following components in parts by mass: 43-50 parts of curing agent, 40-45 parts of butyl acetate and 3-5 parts of dimethylbenzene.

2. The anti-condensation coating according to claim 1, wherein the mass ratio of the component A to the component B is 100: (10-13).

3. The anti-condensation coating according to claim 1,

the defoaming agent is an organic silicon defoaming agent;

the leveling agent is an acrylate leveling agent;

the curing accelerator is a tin accelerator;

the anti-settling agent is fumed silica;

the curing agent is a polyurethane curing agent.

4. The anti-condensation coating according to claim 3,

the curing accelerator is a tetravalent organotin compound;

the anti-settling agent is hydrophobic fumed silica;

the curing agent is hexamethylene diisocyanate trimer curing agent.

5. The anti-condensation coating according to claim 4,

the curing agent is a mixture of a curing agent with a German Bayer company brand of 3390 and a curing agent with a Japanese Asahi Chemicals company brand of TPA-100.

6. The anti-condensation coating according to claim 5, wherein the mass ratio of the curing agent with the mark of 3390 to the curing agent with the mark of TPA-100 is (40-45): (3-5).

7. The preparation method of the anti-condensation coating of any one of claims 1 to 6, characterized by comprising the following specific steps:

(1) preparation of mixture a according to component a: sequentially adding propylene glycol methyl ether acetate, ethylene glycol butyl ether and polyketone resin into butyl acetate, uniformly mixing, adding a dispersing agent, a defoaming agent and a leveling agent, uniformly mixing, adding hydroxyl acrylic resin, uniformly mixing, adding fluorocarbon resin, uniformly mixing, adding white slurry and black slurry, uniformly mixing, adding a curing accelerator, uniformly mixing, adding an anti-settling agent, uniformly mixing and filtering to obtain a mixture A;

(2) preparation of mixture B according to component B: mixing butyl acetate and xylene, stirring, adding a curing agent, stirring again, and filtering to obtain a mixture B;

(3) before use, uniformly mixing the mixture A in the step (1) and the mixture B in the step (2) to obtain the anti-condensation coating.

8. The method for preparing the anti-condensation coating according to claim 7,

the stirring speed for uniformly mixing the white slurry and the black slurry in the step (1) is 800r/min before adding the white slurry and the black slurry, and the rotating speed is adjusted to 300r/min after adding the white slurry and the black slurry;

the stirring in the step (2) is 500-700r/min for 10-20 min;

respectively adding more than two curing agents in the step (2);

the stirring rotation speed of the step (2) is 500-750r/min, and the total stirring time is 10-40 min;

the filter screen adopted in the filtration in the steps (1) and (2) is 80-100 meshes.

9. Use of the anti-condensation coating material according to any one of claims 1 to 6 in a substrate of an electrical equipment cabinet, wherein the electrical equipment cabinet is a ring main unit.

Technical Field

The invention relates to the technical field of coatings, in particular to an anti-condensation coating and a preparation method and application thereof.

Background

Electrical equipment metal rack such as switch board, transformer cabinet, looped netowrk cabinet is by wide use in the outdoor environment, but in actual operation, the inside condensation phenomenon that generally exists of outdoor rack arouses the metalwork corrosion. In severe cases, the condensed water directly drops on the surface of the equipment or forms condensation on the surface of the equipment, and the condensation gradually damages internal elements and causes element failure. Meanwhile, as the insulating strength of the insulating material is reduced, accidents such as creepage and flashover can be caused in severe cases.

Traditional looped netowrk cabinet does not have the ventilation measure, and the characteristic of confined makes inside aqueous vapor can not air-dry in the cabinet, and the moisture that contains in the air stays the cabinet internally always. When the environmental temperature changes because of factors such as the temperature difference round the clock, can make the condensation circulate repeatedly and produce, the life of equipment will greatly reduced, can appear phenomena such as short circuit, equipment tripping operation when serious, influence the normal use of equipment.

Traditional looped netowrk cabinet dehumidification mainly adopts the heating of atmospheric control ware control to drive damp device, guarantees the unsaturated degree of moisture in the internal air of cabinet through the temperature in the cabinet is higher than the external temperature of cabinet to reach the purpose that reduces humidity in the cabinet, prevent condensation in the cabinet. Although traditional looped netowrk cabinet internally mounted has heating to drive damp device and has certain effect, this kind of dehumidification method makes after the condensation becomes the moisture, and the moisture volume still exists in the internal portion of cabinet, and steam does not discharge the cabinet body after the heating, and the problem of humidity is not solved at all, makes the moisture more serious sometimes even. Under the condition, if the outdoor environment temperature is reduced, the humid air in the ring main unit can form condensation again, and the phenomena of corrosion, mildew and the like of the ring main unit can occur for a long time. The heating and moisture removing device can also cause overheating in the box in summer in hot weather to cause damage and aging of cables. Therefore, the traditional heating and dehumidifying device has the hidden trouble of incomplete dehumidification effect and unsafe.

The ring main units are usually made of various base materials, and can be divided into inorganic materials (such as ceramics, concrete, cement, glass and the like), organic materials (such as polystyrene plastics, acrylic plates and the like), metals (cold-rolled steel plates, stainless steel plates, aluminum-coated zinc plates) and the like according to use requirements, so that one protective coating can only be applied to the ring main units made of one or more base materials.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide an anti-condensation coating.

The invention also aims to provide a preparation method of the anti-condensation coating.

The invention further aims to provide application of the anti-condensation coating.

The purpose of the invention is realized by the following technical scheme: the anti-condensation coating comprises a component A and a component B, and the mass ratio of the component A to the component B is 100: (10-13).

The component A comprises the following components in parts by mass: 52-56 parts of fluorocarbon resin, 14-16 parts of propylene glycol monomethyl ether acetate (PMA), 10-11 parts of butyl acetate, 1-2 parts of ethylene glycol butyl ether, 0.3-0.6 part of polyketone resin, 5-6 parts of hydroxyl acrylic resin, 0.3-0.4 part of dispersant, 0.2-0.3 part of defoamer, 0.2-0.3 part of flatting agent, 0.1-0.2 part of curing accelerator, 10-12 parts of white slurry, 0.2-0.3 part of black slurry and 0.1-0.2 part of anti-settling agent.

The component B comprises the following components in parts by mass: 43-50 parts of curing agent, 40-45 parts of butyl acetate and 3-5 parts of dimethylbenzene.

Preferably, the fluorocarbon resin is a fluorocarbon resin of Shanghai Dongfeng brand HLR-6.

Preferably, the polyketone resin is a polyketone resin having a brand name a81 from BASF, germany.

Preferably, the hydroxyacrylic resin is a hyames squad (Hypomer) corporation brand FS 2060A.

Preferably, the dispersant is a dispersant sold under the trade name P-104S by BYK, Germany.

Preferably, the defoamer is a silicone defoamer; more preferably, it is an antifoaming agent of the company BYK (BYK) of germany under the brand number 066N.

Preferably, the leveling agent is an acrylate leveling agent; more preferably a leveling agent of trade name 370 from the company digao, germany (TEGO).

Preferably, the curing accelerator is a tin-based accelerator; more preferably, a tetravalent organotin compound; most preferably a curing accelerator under the designation tin-22 from tequila.

Preferably, the anti-settling agent is fumed silica; more preferably, hydrophobic fumed silica; most preferably fumed silica having the winning creative goods company brand number R972.

Preferably, the curing agent is a polyurethane curing agent; more preferably, a Hexamethylene Diisocyanate (HDI) trimer curing agent; most preferably, the curing agent is a curing agent with a German Bayer company brand of 3390 and a curing agent with a Japanese Asahi chemical company brand of TPA-100, and the mass ratio of the curing agent with the brand of 3390 to the curing agent with the brand of TPA-100 is (40-45): (3-5).

The preparation method of the anti-condensation coating comprises the following specific steps:

(1) preparation of mixture a according to component a: sequentially adding propylene glycol methyl ether acetate, ethylene glycol butyl ether and polyketone resin into butyl acetate, uniformly mixing, adding a dispersing agent, a defoaming agent and a leveling agent, uniformly mixing, adding hydroxyl acrylic resin, uniformly mixing, adding fluorocarbon resin, uniformly mixing, adding white slurry and black slurry, uniformly mixing, adding a curing accelerator, uniformly mixing, adding an anti-settling agent, uniformly mixing and filtering to obtain a mixture A;

(2) preparation of mixture B according to component B: mixing butyl acetate and xylene, stirring, adding a curing agent, stirring again, and filtering to obtain a mixture B;

(3) before use, uniformly mixing the mixture A in the step (1) and the mixture B in the step (2) to obtain the anti-condensation coating.

Preferably, the stirring rotation speed for uniformly mixing the white slurry and the black slurry in the step (1) is 800r/min before adding the white slurry and the black slurry, and the rotation speed is adjusted to 300r/min after adding the white slurry and the black slurry.

Preferably, the stirring in the step (2) is 500-700r/min for 10-20 min.

Preferably, when the curing agent in the step (2) is two or more, the curing agent is added separately.

Preferably, the re-stirring rotation speed in the step (2) is 500-750r/min, and the total stirring time is 10-40 min.

Preferably, the filter screen adopted in the filtration in the steps (1) and (2) is 80-100 meshes.

The anti-condensation coating is applied to the base material of the cabinet of the electrical equipment.

Preferably, the electrical equipment cabinet is a ring main unit.

Compared with the prior art, the invention has the following beneficial effects:

the fluorocarbon resin with lower surface energy is selected as the matrix resin of the anti-condensation coating, the low surface energy reduces the adhesion between the surface of the coating and water drops, and the coating has better hydrophobicity and can play a good role in hydrophobicity. By adding a proper amount of polyketone resin and hydroxyacrylic acid, the coating has good adhesive force to plastic, glass and metal, and is suitable for ring main units of various base materials.

Drawings

FIG. 1 is a graph showing the results of adhesion tests of example 1 and comparative example 1; wherein a is example 1 and b is comparative example 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood 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.

Example 1

The anti-condensation coating is prepared from a component A and a component B according to the following steps:

1. weighing the component A in parts by mass: weighing 10.3 parts of butyl acetate, adding into a dispersion container, controlling the stirring speed to 600r/min, sequentially adding 15.5 parts of PMA, 1.7 parts of butyl cellosolve and 0.5 part of polyketone resin (BASF, A81), and stirring for 15 minutes. 0.3 part of dispersing agent (BYK, P-104S), 0.3 part of defoaming agent (BYK, 066N) and 0.3 part of flatting agent (TEGO Flow 370) are weighed and added into a dispersing container, and stirring is continued for 15 minutes. 5.5 parts of a hydroxyacrylic resin (Hypomer, FS2060A) were weighed out into a dispersion vessel and stirred for 10 minutes. 55 parts of fluorocarbon resin (HLR-6) is weighed and added into a dispersion container, and stirring is carried out for ten minutes. 10 parts of white slurry and 0.2 part of black slurry were weighed into a dispersion vessel and stirred for 45 minutes (rotation speed was adjusted to 188 r/min). 0.1 part of the curing accelerator (moded, tin-22) was weighed out, added to a dispersion vessel, and stirred for 15 minutes. 0.2 part of an anti-settling agent (Yingchuangdegusan, R-972) was weighed into a dispersion vessel and stirred for 15 minutes. Stopping stirring, and filtering with a 80-mesh filter screen to obtain a mixture A.

2. Weighing the component B in parts by mass: weighing 45 parts of butyl acetate, adding the butyl acetate into a dispersion container, controlling the stirring speed to be 500r/min, weighing 5 parts of dimethylbenzene, adding the dimethylbenzene into the dispersion container, and stirring for 10 minutes. 5 parts of curing agent (Asahi Kasei Co., Ltd., TPA-100) was weighed out and stirred in a dispersion vessel for 15 minutes. 45 parts of curing agent (Bayer, 3390) is weighed and added into a dispersion container (the rotation speed is adjusted to 750r/min), stirring is carried out for 20 minutes, and the stirring is stopped. Filtering with 80 mesh sieve to obtain mixture B.

3. Before use, mixing the mixture A prepared in the step 1 and the mixture B prepared in the step 2 according to a mass ratio of 100: 13, and mixing uniformly to obtain the product.

Example 2

The anti-condensation coating is prepared from a component A and a component B according to the following steps:

1. weighing the component A in parts by mass: weighing 10 parts of butyl acetate, adding the butyl acetate into a dispersion container, controlling the stirring speed to 600r/min, sequentially adding 14.5 parts of PMA, 1.5 parts of butyl cellosolve and 0.55 part of polyketone resin (BASF, A81), and stirring for 15 minutes. 0.35 part of dispersing agent (BYK, P-104S), 0.25 part of defoaming agent (BYK, 066N) and 0.25 part of flatting agent (TEGO Flow 370) are weighed and added into a dispersing container, and stirring is continued for 15 minutes. 5 parts of a hydroxyacrylic resin (Hypomer, FS2060A) were weighed out into a dispersion vessel and stirred for 10 minutes. 53 parts of fluorocarbon resin (HLR-6) is weighed and added into a dispersion container, and stirred for ten minutes. 10.5 parts of white slurry and 0.2 part of black slurry were weighed into a dispersion vessel and stirred for 45 minutes (rotation speed was adjusted to 188 r/min). 0.18 part of the curing accelerator (moded, tin-22) was weighed out, added to a dispersion vessel, and stirred for 15 minutes. 0.15 part of an anti-settling agent (Yingchuangdegusan, R-972) was weighed into a dispersion vessel and stirred for 15 minutes. Stopping stirring, and filtering with a 80-mesh filter screen to obtain a mixture A.

2. Weighing the component B in parts by mass: weighing 42 parts of butyl acetate, adding the butyl acetate into a dispersion container, controlling the stirring speed to be 500r/min, weighing 3.5 parts of dimethylbenzene, adding the dimethylbenzene into the dispersion container, and stirring for 10 minutes. 4.5 parts of a curing agent (Asahi Kasei Co., Ltd., TPA-100) was weighed out and stirred in a dispersion vessel for 15 minutes. 43 parts of a curing agent (Bayer, 3390) was weighed into a dispersion vessel (rotation speed was adjusted to 750r/min), stirred for 20 minutes, and the stirring was stopped. Filtering with 80 mesh sieve to obtain mixture B.

3. Before use, mixing the mixture A prepared in the step 1 and the mixture B prepared in the step 2 according to a mass ratio of 100: 12.5, and mixing uniformly.

Comparative example 1

1. Weighing 10 parts of butyl acetate, adding the butyl acetate into a dispersion container, controlling the stirring speed to 600r/min, sequentially adding 14.5 parts of PMA, 1.5 parts of ethylene glycol monobutyl ether, 0.35 part of dispersant (BYK, P-104S), 0.25 part of defoaming agent (BYK, 066N) and 0.25 part of flatting agent (TEGO Flow 370) into the dispersion container, and continuously stirring for 15 minutes. 53 parts of fluorocarbon resin (HLR-6) is weighed and added into a dispersion container, and stirred for ten minutes. 10.5 parts of white slurry and 0.3 part of black slurry were weighed into a dispersion vessel and stirred for 45 minutes (rotation speed was adjusted to 188 r/min). 0.18 part of the curing accelerator (moded, tin-22) was weighed out, added to a dispersion vessel, and stirred for 15 minutes. 0.15 part of an anti-settling agent (Yingchuangdegusan, R-972) was weighed into a dispersion vessel and stirred for 15 minutes. Stopping stirring, and filtering with a 80-mesh filter screen to obtain a mixture A.

2. Weighing the component B in parts by mass: weighing 42 parts of butyl acetate, adding the butyl acetate into a dispersion container, controlling the stirring speed to be 500r/min, weighing 3.5 parts of dimethylbenzene, adding the dimethylbenzene into the dispersion container, and stirring for 10 minutes. 4.5 parts of a curing agent (Asahi Kasei Co., Ltd., TPA-100) was weighed out and stirred in a dispersion vessel for 15 minutes. 43 parts of a curing agent (Bayer, 3390) was weighed into a dispersion vessel (rotation speed was adjusted to 750r/min), stirred for 20 minutes, and the stirring was stopped. Filtering with 80 mesh sieve to obtain mixture B.

3. Before use, mixing the mixture A prepared in the step 1 and the mixture B prepared in the step 2 according to a mass ratio of 100: 12.5, and mixing uniformly.

Comparative example 2

1. Weighing 10.3 parts of butyl acetate, adding into a dispersion container, controlling the stirring speed to 600r/min, sequentially adding 15.5 parts of PMA, 1.7 parts of butyl cellosolve and 0.5 part of polyketone resin (BASF, A81), and stirring for 15 minutes. 0.3 part of dispersing agent (BYK, P-104S), 0.3 part of defoaming agent (BYK, 066N) and 0.3 part of flatting agent (TEGO Flow 370) are weighed and added into a dispersing container, and stirring is continued for 15 minutes. 5.5 parts of a hydroxyacrylic resin (Hypomer, FS2060A) were weighed out into a dispersion vessel and stirred for 10 minutes. 55 parts of a polyurethane resin (YP2224, Shanghai Yuan Bang) was weighed out and charged into a dispersion vessel, and stirred for ten minutes. 10 parts of white slurry and 0.3 part of black slurry were weighed into a dispersion vessel and stirred for 45 minutes (rotation speed was adjusted to 188 r/min). 0.1 part of the curing accelerator (moded, tin-22) was weighed out, added to a dispersion vessel, and stirred for 15 minutes. 0.2 part of an anti-settling agent (Yingchuangdegusan, R-972) was weighed into a dispersion vessel and stirred for 15 minutes. Stopping stirring, and filtering with a 80-mesh filter screen to obtain a mixture A.

2. Weighing the component B in parts by mass: weighing 45 parts of butyl acetate, adding the butyl acetate into a dispersion container, controlling the stirring speed to be 500r/min, weighing 5 parts of dimethylbenzene, adding the dimethylbenzene into the dispersion container, and stirring for 10 minutes. 5 parts of curing agent (Asahi Kasei Co., Ltd., TPA-100) was weighed out and stirred in a dispersion vessel for 15 minutes. 45 parts of curing agent (Bayer, 3390) is weighed and added into a dispersion container (the rotation speed is adjusted to 750r/min), stirring is carried out for 20 minutes, and the stirring is stopped. Filtering with 80 mesh sieve to obtain mixture B.

3. Before use, mixing the mixture A prepared in the step 1 and the mixture B prepared in the step 2 according to a mass ratio of 100: 13, and mixing uniformly to obtain the product.

The coating was tested for properties, and the specific properties are shown in table 1.

TABLE 1 tables for testing the properties of the coatings formulated in examples 1-2 and comparative examples 1-2

TABLE 2 adhesion of the coatings to different substrates (cross-hatch method)

The results show that the coatings obtained by coating the anti-condensation coatings prepared in the examples 1 and 2 have good hydrophobicity, show strong adhesion to different substrates, and have high practicability. In contrast, the coating of comparative example 1, in which neither polyketone resin nor hydroxyacrylic acid was added, had significantly poor adhesion to the substrate, and the coating was applied only to the substrate surface with a primer or an intermediate paint, and the interlayer adhesion of the coating itself was also poor (FIG. 1). In comparative example 2, the coating obtained by replacing fluorocarbon resin with polyurethane resin has a small static contact angle and large surface tension, cannot form a hydrophobic surface, and cannot achieve the anti-condensation effect, and the coating obtained by coating the coating cannot meet the use requirements on water resistance, anti-graffiti property, adhesive force and other properties.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.