40results about How to "Anti-fog" patented technology

The invention relates to a superhydrophilic / underwater superoleophobic coating material and a preparation method thereof. The coating material is composed of a primer layer and a finish coat layer, wherein the primer layer is mainly composed of a hydroxy acrylic resin and a curing agent thereof; the finish coat layer is composed of polyvinyl alcohol and nanoparticles; and the curing agent in the primer can produce chemical crosslinking reaction with the polyvinyl alcohol. The preparation method comprises the following steps: applying the primer layer on the substrate surface; applying the finish coat layer, and precrosslinking by drying at room temperature or low temperature to initiate the chemical bonding between the primer layer finish coat layer; soaking the coating in a crosslinking agent water solution for some time; and taking the coating out of the crosslinking agent water solution, and sufficiently curing the primer layer by drying at room temperature or high-heat treatment. The coating material obtained by the method has a gradient micro / nano structure surface, and has the advantages of outstanding superhydrophilicity and underwater superoleophobicity, high binding force with the substrate and favorable transparency. The coating material can be used as an antifogging coating, and can also be used as a self-cleaning antifouling coating on the surface of an underwater facility.

Provided is a functional article having a water absorption layer having wear resistance as well as a water absorption function involved in condensation prevention, humidity control, fouling prevention, fogging prevention, icing prevention, and the like; also provided are an article for transport equipment and an article for construction provided with the same. Further provided is a composition for coating making it possible to form a water-absorbent coating having a water absorption function involved in condensation prevention, humidity control, fouling prevention, fogging prevention, icing prevention, and the like, and also having wear resistance. This functional article having a substrate as well as a water absorption layer provided to at least one surface of the substrate is characterized in that the water absorption layer contains a porous inorganic particulate and also an inorganic oxide serving as a binder component. This composition for coating contains a porous inorganic particulate having a mean primary particle diameter of 5-100 nm and a mean pore diameter of 1-50 nm, a metal alkoxide and / or a partial hydrolysis condensation product thereof, and a solvent.

Provided is an antifog laminate which includes a substrate and an antifog layer which is disposed on the substrate and has a smooth surface. The antifog layer contains a hydrophilic molecule structure. The antifog layer has an elastic recovery rate of at least 90%, a coefficient of kinetic friction of no more than 0.40, and an average thickness of at least 4[mu]m.

The invention relates to agricultural polyvinyl chloride shed film exclusively used for the fruit trees, which can adjust the transmitted spectrum of the sunlight in the greenhouse, promote the photosynthesis of the fruit trees, and improve the fruit quality and output. Polyvinyl chloride resin is taken as the basal body of the agricultural polyvinyl chloride shed film exclusively used for the fruit trees, plasticizer, heat stabilizer, ultraviolet absorber, compound dripless agent, organosilicon antifogging agent, hindered amine light stabilizer and light conversion agent, etc. are added in the basal body, and then the agricultural polyvinyl chloride shed film exclusively used for the fruit trees is prepared through the production process steps of reducing and tentering, etc. The invention can overcome the deficiency that the polyvinyl chloride film is produced by utilizing the ultraviolet absorber as the light stabilizer, during the novel polyvinyl chloride function film production, a method that the hindered amine light stabilizer and the light conversion agent with reasonable compounding ratio are added is adopted, to ensure that the light transmittance of the film is improved in a certain wavelength range, to play the effect on promoting the fruit coloring of the fruit tree in the shed.

The invention discloses a multi-layer co-extrusion production process of a biaxially stretched polyethylene antibacterial and anti-fog film, which belongs to the field of films. The multi-layer co-extrusion production process of a biaxially oriented polyethylene anti-bacterial and anti-fog film can realize high production speed and output , at the same time, the film produced by this process has anti-fogging properties and high mechanical and optical properties. When the homogenization distributor is heated, a layer of interlayer can be formed between the inner extruded material and the outer extruded material, so that a transparent antistatic layer is formed between the subsurface layer and the outer layer of the formed film , on the one hand, it can effectively eliminate the static electricity of the finished film, and it is easy to use. On the other hand, the connection strength between the subsurface layer and the outer layer can be effectively improved through the transparent antistatic layer, and its mechanical properties can be significantly improved. At the same time, it can effectively improve optical properties of the film.

The invention discloses a solar reflective condensation panel. The solar reflective condensation panel comprises a composite panel which is a paraboloid panel, wherein the composite panel comprises a plurality of composite layers, a metal net is arranged between each two adjacent composite layers, the concave surface of the composite panel is provided with a reflective layer of which the outer side face is provided with a protective film, each composite layer is made of the following components in percentage by mass: 20-30 percent of resin, 50-60 percent of glass fiber and 10-30 percent of carbon fiber, the sum of the percentages of all the components is 100 percent, the reflective layer is 30-50nm thick and is an aluminium film, and the protective film is 5-20nm thick and is a TiO2 film. Therefore, the solar reflective condensation panel has the following beneficial effects that the composite panel is not likely to expand and contract due to temperatures, the tensile resistance and the fatigue resistance are high, the weight is light, and the service life is long; the surface of the solar reflective condensation panel has self-cleaning decontamination and antifogging performances, so that the good reflectivity is kept.

The invention relates to modified nano SiO2 sol, a preparation method for the modified nano SiO2 sol and an application method of the modified nano SiO2 sol on automobile glass. The preparation method for the modified nano SiO2 sol comprises the following basic steps in sequence: 1, respectively preparing sol solution containing 30-80nm of SiO2 granules and sol solution containing 100-200nm of SiO2 granules at certain temperature under the concentration of host crystal by a sol-gel process; 2, adding resin of a proper proportion to the prepared sol solution containing 100-200nm of SiO2 granules in the step 1 and stirring to perform coating; 3, cleaning and activating the surface of the glass and baking within a range of 100-200 DEG C by adopting the infrared technology; 4, forming a resin-coated SiO2 film of 100-200nm at one side of the surface of the glass, and forming a mixed SiO2 sol film with different grain diameters of 30-80nm and 100-200nm at the other side by adopting a certain film plating mode; and baking for 60-120 minutes at the temperature of 50-120 DEG C; and 5, modifying the surface of the film-plated glass by adopting a fluorine-contained modifier, and baking for 20-90 minutes at the temperature of 60-100 DEG C.

To prepare an agricultural film used for lining or outer covering for greenhouse cultivation, tunnel cultivation, or the like, and having excellent anti-fogging properties and moisture permeability. This agricultural film is characterized as having a plurality of micropores obtained by perforation processing of a thermoplastic resin film with a needle having spiny projections. The thermoplastic resin film having the plurality of micropores is characterized in that the shape of the micropores has a spiny form having the spiny parts. The film having the plurality of the micropores is characterized in that the total light transmittance of the film at 555 nm is preferably >=70%.

The invention relates to a hollow nanoparticle composite antifogging film and a preparation method thereof. The hollow nanoparticle composite antifogging film comprises hollow nanoparticles and a high-polymer antifogging material, wherein the hollow nanoparticles and high-polymer antifogging material are compounded to form the antifogging film. The method comprises the following steps: (1) preparing the hollow silicon dioxide nanoparticles by a hydrothermal process; (2) mixing the obtained hollow silicon dioxide nanoparticles with an acrylate resin and other components to obtain a composite antifogging coating liquid; (3) forming a hollow nanoparticle composite high-polymer antifogging coating on a glass surface; and (4) curing to form the antifogging film. The coating compounded from the hollow silicon dioxide nanoparticles and hydrophilic high-polymer resin can form a compact and enduring antifogging film on the glass surface, thereby enhancing the antifogging effect. The hollow silicon dioxide nanoparticles have excellent heat insulation property, thereby greatly enhancing antifogging performance of the high-polymer hydrophilic antifogging film.

The invention discloses a self-cleaning glass, comprising a glass substrate and a titanium dioxide layer arranged on the glass substrate, the titanium dioxide layer is composed of titanium dioxide nanotubes perpendicular to the glass substrate, the tube length of the titanium dioxide nanotube is 500-3500nm, and the tube wall thickness It is 10-35nm, the aperture is 10-80nm, the distance between the centers of the two apertures between two adjacent titanium dioxide nanotubes is 60-130nm, and the crystal structure of the titanium dioxide nanotube is anatase structure. The self-cleaning glass of the invention has very excellent light transmittance, photocatalytic property and self-cleaning performance, can be widely used in industries requiring light transmittance, achieves the purpose of light transmittance, dustproof and antifogging, and has good application prospect. The invention also discloses a preparation method of self-cleaning glass, which combines magnetron sputtering, anodic oxidation reaction and annealing process.

The invention discloses an anti-fog optical resin lens and its preparation method. The lens comprises the following elements arranged in sequence: a resin lens substrate, a stiffened film layer, a penetration increasing and reflection reducing film layer, a connecting adhesive layer and an anti-fog film layer. The method further discloses a preparation method for the anti-fog optical resin lens, and the method comprises the following steps: conducting ultrasonic cleaning to the resin lens substrate; using an immersing and coating manner to plate for the stiffened film layer; under the vacuumed condition, plating on the stiffened layer the penetration increasing and reflection reducing film layer; and finally, coating the connecting adhesive layer onto the penetration increasing and reflection reducing film layer; and adhering the anti-fog film layer. The anti-fog film layer is prepared from a high-molecular hydrophilic film. According to the anti-fog optical resin lens of the invention, the optical transparent adhesive tape is used to have a penetration increasing and reflection reducing film layer and a high-molecular hydrophilic film adhered together, which means that without undermining the original functions of the resin lens, the penetration rate of the resin lens is increased while the reflection rate is reduced and that the lens has an anti-fog function.

The invention relates to a superhydrophilic / underwater superoleophobic coating material and a preparation method thereof. The coating material is composed of a primer layer and a finish coat layer, wherein the primer layer is mainly composed of a hydroxy acrylic resin and a curing agent thereof; the finish coat layer is composed of polyvinyl alcohol and nanoparticles; and the curing agent in the primer can produce chemical crosslinking reaction with the polyvinyl alcohol. The preparation method comprises the following steps: applying the primer layer on the substrate surface; applying the finish coat layer, and precrosslinking by drying at room temperature or low temperature to initiate the chemical bonding between the primer layer finish coat layer; soaking the coating in a crosslinking agent water solution for some time; and taking the coating out of the crosslinking agent water solution, and sufficiently curing the primer layer by drying at room temperature or high-heat treatment. The coating material obtained by the method has a gradient micro / nano structure surface, and has the advantages of outstanding superhydrophilicity and underwater superoleophobicity, high binding force with the substrate and favorable transparency. The coating material can be used as an antifogging coating, and can also be used as a self-cleaning antifouling coating on the surface of an underwater facility.

The invention discloses an optical functional multi-conversion plastic greenhouse composite thin film and a preparation method thereof. The optical functional multi-conversion plastic greenhouse composite thin film is prepared from the following components in parts by weight: 50 parts of plastic thin film, 10 to 20 parts of plastic powder, 10 to 30 parts of long-persistence material, 1 to 10 parts of photothermal conversion material, 1 to 5 parts of photocatalytic sterilizing agent and 1 to 5 parts of additive; wherein the optical functional multi-conversion plastic greenhouse composite thin film is prepared from the plastic thin film by adopting surface powder filler modification, and the surface powder filler modification refers to uniformly mix the components except the plastic thin film and then carry out composite forming on the plastic thin film through a hot-pressing technology. The optical functional multi-conversion plastic greenhouse composite thin film disclosed by the invention is used for a greenhouse, and compared with a common greenhouse, the temperature is increased by 2 to 3 DEG C in winter; photosynthesis of plants can be promoted through natural illumination strength reinforcement and delaying, and production increment and early maturing of the plants are realized; the morbidity of powdery mildew, black spot and the like in a damp greenhouse can be reduced through the bactericidal effect of the optical functional multi-conversion plastic greenhouse composite thin film, the usage of pesticide is reduced, and multiple effects of green, energy-saving, environment-friendly and production-increasing are realized by greenhouse planting.

The invention discloses a method for preparing a hydrophobic coating film with high light transmittance for photovoltaic glass, comprising the following steps: (1) mixing a silicon source with an organic solvent, performing a sol-gel reaction in acid catalysis to obtain a mixed sol A (2) Add organosiloxane and surfactant to mixed sol A, and carry out secondary sol-gel reaction under stirring to obtain mixed sol B; (3) age mixed sol B, then coat and heat treatment to obtain the obtained the hydrophobic coating. The present invention prepares coating film precursor (namely mixed sol B) by two-step sol-gel method and preferred organic solvent, the film obtained after coating has high hydrophobicity and high light transmittance, also has anti-fog performance, can improve Improve the light transmittance of solar photovoltaic glass and improve the photoelectric conversion efficiency of solar cells.

The invention relates to a long-acting superhydrophilic polysilazane coating and a preparation method thereof. The preparation method is: coating the polysilazane solution on the surface of the substrate, then performing photocuring or photothermal curing to form a polysilazane coating, and then using a surface treatment solution to treat the polysilazane coating. The surface is coated or impregnated, followed by heat treatment. The contact angle between the water droplets and the surface of the coating obtained in the present invention is less than 5°, and it is in the form of spreading and attaching, and it is easy to penetrate into the bottom of dirt and oil stains to float and wash away, thereby achieving a self-cleaning effect and having good mechanical and chemical properties. stability. The coating involved in the invention has self-cleaning and anti-fog functions, and has broad application prospects in construction, kitchen appliances, solar panels, outdoor cultural relics, and the like.

The invention discloses waterborne resin antifogging coating special for films and an antifogging film. The waterborne resin antifogging coating comprises a first composition and a second composition,wherein the first composition comprises waterborne polyester resin, a cosolvent, a solvent, a catalyst, a curing agent and a wetting agent; the second composition comprises a hydrophilic component cosolvent, a solvent, a catalyst, a curing agent and a wetting agent. The antifogging film is coated with the coating above. The waterborne resin antifogging coating has the advantages that the antifogging coating is colorless and transparent and has extremely high light transmittance; the waterborne polyester resin and the hydrophilic component in the antifogging coating are chemically crosslinkedvia the curing agents, so that the coating layer formed by the antifogging coating and a film base material have lasting antifogging performance, water resistance and wear resistance.