阅读说明：本技术 自清洁膜层及采用该自清洁膜层的接水盘、空调器 (Self-cleaning film, water receiving tray adopting same and air conditioner ) 是由 温博 李云蹊 郝玉密 于 2020-05-25 设计创作，主要内容包括：本发明提出一种自清洁膜层及采用该自清洁膜层的接水盘、空调器,属于高分子材料技术领域,能够解决现有空调接水盘上的冷凝水浸润在其表面,冷凝水及污物不能即时排出空调外、易滋生细菌等技术问题。该自清洁膜层由下至上依次为塑料基底层、底漆膜层和表面膜层,所述表面膜层由具有微/纳二元结构的超疏水颗粒形成得到,所述超疏水颗粒为利用疏水改性用材料改性粉末基材得到。本发明提供的自清洁膜层可应用于空调接水盘表面,可使污物随冷凝水及时排出空调器,起到良好的清洁效果。(The invention provides a self-cleaning film layer, a water pan adopting the self-cleaning film layer and an air conditioner, belongs to the technical field of high polymer materials, and can solve the technical problems that condensed water on the water pan of the existing air conditioner soaks the surface of the water pan, the condensed water and dirt cannot be discharged out of the air conditioner in real time, bacteria are easy to breed, and the like. The self-cleaning film layer sequentially comprises a plastic substrate layer, a primer film layer and a surface film layer from bottom to top, wherein the surface film layer is formed by super-hydrophobic particles with a micro/nano binary structure, and the super-hydrophobic particles are obtained by modifying a powder base material by using a material for hydrophobic modification. The self-cleaning film provided by the invention can be applied to the surface of the water pan of the air conditioner, so that dirt can be discharged out of the air conditioner along with condensed water in time, and a good cleaning effect is achieved.)

1. The self-cleaning film layer is characterized by sequentially comprising a plastic substrate layer, a primer film layer and a surface film layer from bottom to top, wherein the surface film layer is formed by super-hydrophobic particles with a micro/nano binary structure, and the super-hydrophobic particles are obtained by modifying a powder base material by using a material for hydrophobic modification.

2. The self-cleaning film layer of claim 1, wherein the plastic of the plastic substrate layer is selected from at least one of ABS plastic, ASA plastic, AS plastic, polystyrene, polypropylene, polymethylmethacrylate, polyethylene, polyoxymethylene, polycarbonate, polybutylene terephthalate, polyvinyl chloride, and polyamide.

3. The self-cleaning film layer of claim 1 wherein the primer in the primer film layer comprises a major component selected from at least one of epoxy resins, polyester resins, polyurethane resins, polyacrylates, silicones, styrenic block copolymers, amorphous fluoropolymers, and alkyd resin blends.

4. The self-cleaning film layer of claim 1, wherein the powder substrate is selected from at least one of silicon dioxide, titanium dioxide, aluminum oxide, iron oxide, zinc oxide, aluminum silicate, magnesium oxide, and hydrophobic sulfide minerals.

5. The self-cleaning film layer of claim 1, wherein the hydrophobic modification material is at least one selected from the group consisting of silane coupling agents, acid ester coupling agents, fluorine-containing compounds, saturated aliphatic compounds, and low surface energy polymers with 3D structure.

6. The self-cleaning film layer of claim 1, wherein the hydrophobic modification material is at least one selected from the group consisting of aminosilanes, epoxysilanes, sulfanylsilanes, methacryloxysilanes, vinylsilanes, ureidosilanes, isocyanatosilanes, n-hexadecyltrimethoxysilane, monoalkoxylate ester coupling agents, monoalkoxypyrophosphate ester coupling agents, chelate ester coupling agents, ligand ester coupling agents, polyvinylidene fluoride, polytetrafluoroethylene, perfluorooctanol, fluoroalkyl silicones, fluoroesters of tetrachlorophthalic acid, oleic acid, perfluorobutyric acid, perfluorooctanoic acid, fluorochloropentanoic acid, sodium fluoroalkylsulfonates, perfluorooxaamide quaternary ammonium salts, triglycerides of fluorine-containing acids, saturated fatty acids, thiol-containing polymeric thiols, isobutyltrisilicones, and caged silsesquioxanes.

7. The self-cleaning film layer of claim 1, wherein the superhydrophobic particles are selected from nano-micro scale particles having a diameter of 10nm-20 μ ι η.

8. The self-cleaning film layer of claim 1, wherein when the powder base material is modified with the hydrophobic modification material, the amount ratio of the hydrophobic modification material to the powder base material is 1: (5-20).

9. A water-tray, wherein the surface of the water-tray is coated with a self-cleaning membrane layer according to any one of claims 1 to 8.

10. An air conditioner comprising the drip tray of claim 9.

Technical Field

The invention belongs to the technical field of high polymer materials, and particularly relates to a self-cleaning film, a water pan adopting the self-cleaning film and an air conditioner.

Background

In the air conditioner assembly, the water receiving disc is used for receiving the condensed water falling from the heat exchanger and discharging the condensed water out of the air conditioner. Condensed water on the water receiving tray used in the industry is soaked on the surface and is difficult to flow to a water outlet, so that the condensed water cannot be discharged out of an air conditioner immediately, dust is easily accumulated, microorganisms are enriched, the quality of a living environment is affected, and the health of a human body is damaged.

Most of the existing air conditioner cleaning schemes are double-cleaning technical schemes of an air conditioner evaporator and a condenser, the treatment aiming at a water receiving tray is mainly focused on the aspects of water leakage prevention, noise reduction and the like, and the cleaning problem is not really solved.

Patent application CN105386032A discloses a method for preparing a wear-resistant super-hydrophobic coating by using a cold spraying technology and a product thereof, wherein after a base material is roughened, a coating is prepared by cold spraying micro-nano metal, alloy and ceramic composite powder, and after powder modified with low surface energy substances is sprayed again, the wear-resistant super-hydrophobic coating and the product are prepared. Although the coating prepared by the method has wear resistance and hydrophobicity, the surface of the coating needs to be coarsened during preparation, the process has higher requirements on temperature, and the preheating temperature is 100-600 ℃. Moreover, the use of the hydrophobic coating is mostly concentrated on metal substrates and glass substrates, and relatively speaking, the process requirements are high.

Disclosure of Invention

The invention provides a self-cleaning film layer, a water pan adopting the self-cleaning film layer and an air conditioner.

In order to achieve the purpose, the invention provides a self-cleaning film layer which sequentially comprises a plastic substrate layer, a primer film layer and a surface film layer from bottom to top, wherein the surface film layer is formed by super-hydrophobic particles with a micro/nano binary structure, and the super-hydrophobic particles are obtained by modifying a powder substrate by using a hydrophobic modification material.

Preferably, the plastic in the plastic substrate layer is selected from at least one of ABS plastic, ASA plastic, AS plastic, polystyrene, polypropylene, polymethylmethacrylate, polyethylene, polyoxymethylene, polycarbonate, polybutylene terephthalate, polyvinyl chloride and polyamide.

Preferably, the main component of the primer in the primer film layer is at least one selected from the group consisting of epoxy resins, polyester resins, polyurethane resins, polyacrylates, silicones, styrene block copolymers, amorphous fluoropolymers, and alkyd resin mixtures.

Preferably, the main component of the primer in the primer film layer may be at least one of epoxy resin, polyurethane, polymethyl methacrylate, methyl silicone resin, methylphenyl silicone resin, fluorosilicone resin, polystyrene, acrylic resin, polystyrene, polyacrylate, polyisobutylene, polyisoprene, polyvinylpyrrolidone, polyvinyl alcohol, and aminosilicone resin.

Preferably, the powder base is at least one selected from the group consisting of silicon dioxide, titanium dioxide, aluminum oxide, iron oxide, zinc oxide, aluminum silicate, magnesium oxide, and hydrophobic sulfide minerals.

Preferably, the material for hydrophobic modification is at least one selected from the group consisting of a silane coupling agent, an acid ester coupling agent, a fluorine-containing compound, and a saturated aliphatic compound.

Preferably, the material for hydrophobic modification is at least one selected from the group consisting of aminosilane, epoxysilane, sulfanylsilane, methacryloxysilane, vinylsilane, ureidosilane, isocyanatosilane, n-hexadecyltrimethoxysilane, monoalkoxy-acid-type ester coupling agent, monoalkoxy-pyrophosphate-type acid ester coupling agent, chelate-type acid ester coupling agent, complex-type acid ester coupling agent, polyvinylidene fluoride, polytetrafluoroethylene, perfluorooctanol, fluoroalkyl silicone, fluoroalkylphthalate fluorinated ester, oleic acid, perfluorobutyric acid, perfluorooctanoic acid, fluorochloropentanoic acid, fluoroalkylsodium sulfonate, perfluorooxaamide quaternary ammonium salt, fluoroalkanoic acid triglyceride, saturated fatty acid, thiol-containing polymer, isobutyltrisiloxane and caged silsesquioxane.

Preferably, the superhydrophobic particles are selected from nano-micro scale particles having a diameter of 10nm to 20 μm. The reason why the particle diameter is limited to the above range is that: when the particle diameter is less than 10nm, the influence on the nano-scale microstructure is small, and when the particle diameter is more than 20 mu m, the surface roughness is too large, so that the surface lyophobicity of the prepared material is poor.

Preferably, when the powder base material is modified with the material for hydrophobic modification, the mass ratio of the material for hydrophobic modification to the powder base material is 1: (5-20).

The invention provides a water pan, wherein the surface of the water pan is coated with a self-cleaning film layer according to any one of the technical schemes.

The invention provides an air conditioner, which comprises the water pan in the technical scheme.

Compared with the prior art, the invention has the advantages and positive effects that:

the invention provides a self-cleaning film layer based on a high polymer material, wherein the surface film layer of the self-cleaning film layer is a super-hydrophobic film layer with a micro/nano binary structure, and the nano/micro binary structure can improve the air contact area of the surface, reduce the contact area between solid and liquid and reduce the contact area between the surface and pollutants, so that the self-cleaning film layer and hydrophobic groups on the film layer can act together to play a good cleaning effect. When the self-cleaning film layer is applied to the surface of the water pan of the air conditioner, the condensed water can not be soaked and stay on the surface of the water pan, so that dirt can be discharged out of the air conditioner along with the condensed water in time.

Drawings

FIG. 1 is an electron micrograph of hydrophobic powder of example 1 provided by an example of the present invention;

FIG. 2 is a graph showing the results of the contact angle test of example 1 provided in the examples of the present invention;

fig. 3 is a graph showing the contact angle test result of example 2 provided in the present invention.

Detailed Description

In order to more clearly and specifically describe the self-cleaning film, the water pan using the self-cleaning film, and the air conditioner, the following description will be given with reference to specific embodiments.

Example 1

And coating a layer of amino silicone resin on the ABS plastic substrate layer, and dispersing and spraying the super-hydrophobic particles on the amino silicone resin layer to form the self-cleaning film layer. The super-hydrophobic particles are silica particles subjected to hydrophobic modification treatment, and the preparation method comprises the following steps:

uniformly mixing 20 parts of deionized water, 20 parts of absolute ethyl alcohol and a proper amount of ammonia water, and adjusting the pH value to 8-10; slowly dripping 18 parts of tetraethyl orthosilicate into the fully mixed solution, and stirring at the constant temperature of 40 ℃; after the reaction is finished, centrifugally separating, cleaning and drying the product to prepare hydrophobic powder silicon dioxide powder with the particle size of 50nm-2.5 mu m, wherein an electron microscope picture of the powder is shown in figure 1.

Adjusting the pH value of 20 parts of absolute ethyl alcohol and 20 parts of deionized water and acetic acid to 3-6, adding the obtained powder, and uniformly mixing; then, slowly dropwise adding n-hexadecyltrimethoxysilane (the adding amount of the n-hexadecyltrimethoxysilane is 1/10 of the amount of the silicon dioxide powder substance); after the reaction is finished, the nano silicon dioxide particles are cleaned and dried to obtain the nano silicon dioxide particles with the hydrophobic modification treatment, and the particle size of the powder is 50nm-2.5 mu m.

In the preparation process, the nano-particle size particles with large surface energy are easy to spontaneously agglomerate in an alkaline solution of water and ethanol to reduce the surface energy and form micron-sized large particles, and special-structure powder with nano-roughness and micron-sized particle size can be obtained.

Example 2

Coating a layer of amino silicone resin on a base material polystyrene plastic, and dispersing and spraying super-hydrophobic particles on the amino silicone resin layer to form a self-cleaning film layer. The super-hydrophobic particles are a mixture of nano silicon dioxide and nano titanium dioxide subjected to hydrophobic modification treatment, and the specific preparation method is as follows:

uniformly mixing 8 parts of water and 32 parts of ethanol, and dropwise adding acetic acid to ensure that the pH value is 3-5; mixing 1 part of tetrabutyl titanate with 4 parts of ethanol (the mass ratio of tetrabutyl titanate to water is 1: 80); adding oleic acid, and keeping the mass ratio of the oleic acid to the tetrabutyl titanate to be 1: 15, reacting for 3 hours under the stirring condition of 60 ℃, and washing and drying to obtain the hydrophobic nano titanium dioxide powder with the particle size of about 20 nm.

Silica having a particle size of 0.5 μm was hydrophobically modified by the method of example 1.

Example 3

And (3) coating a layer of acrylic resin on the polypropylene base material plastic, and dispersing and spraying the super-hydrophobic particles on the amino silicone resin layer to form the self-cleaning film layer. Wherein the super-hydrophobic particles are magnesium silicate subjected to hydrophobic modification treatment:

magnesium silicate with a particle size of 0.4 μm was immersed in oleic acid for 1 hour and then taken out.

Example 4

Coating a layer of EP-12 epoxy resin on an ABS plastic substrate, and dispersedly spraying super-hydrophobic particles on the amino silicone resin layer to form a self-cleaning film layer. The super-hydrophobic particles are a mixture of nano titanium dioxide and alumina subjected to hydrophobic modification treatment, and the preparation method comprises the following steps:

mixing titanium dioxide particles with a particle size of 70nm with alumina impregnation with a particle size of 200nm with isopropyl dioleate acyloxy titanate (an acid ester coupling agent), adding a suitable amount of water, stirring for 1h, taking out and drying the hydrophobic particles.

Performance testing

The self-cleaning film layers prepared in examples 1 and 2 were subjected to a performance test, the test method being as follows:

as can be seen from the data in the table, the self-cleaning film layer prepared by the method has good hydrophobic effect under the dual effects of the hydrophobic material and the surface rough structure; dirty water drops are not easy to stay and attach on the surface of the film layer, and the self-cleaning effect of the surface of the film layer can be achieved. The air conditioner component applying the film can effectively reduce the probability of surface pollutant retention and keep the air conditioner clean.