CN201158911Y

CN201158911Y - Anti-ultraviolet self-cleaning coating

Info

Publication number: CN201158911Y
Application number: CNU2007201711167U
Authority: CN
Inventors: 张波
Original assignee: SHENZHEN TOPPER INDUSTRIAL Co Ltd
Current assignee: SHENZHEN TOPPER INDUSTRIAL Co Ltd
Priority date: 2007-11-26
Filing date: 2007-11-26
Publication date: 2008-12-03
Anticipated expiration: 2017-11-26

Abstract

The utility model relates to a self-cleaning decorative plate which is coated with a light resistant ultraviolet light catalyzed nanometer self-cleaning coating and mainly adds a nanometer titanium dioxide functional coating on the carrying surface of wall basal materials, wherein a nanometer TiO2 functional coating is coated on the surface of the carrying surface of the wall basal materials, the wall basal materials can be an oil paint layer, metal materials and plastics, and since ultraviolet light of the nanometer TiO2 functional coating has catalyzing effect to the hydrocarbon chemicals, the wall basal materials also can be glass, ceramics, marbles and the like. The utility model has the beneficial effects of ultraviolet light resistance, weatherability, aging resistance, antibiosis, enzyme resistance, pollution-proof, deodorizing and the like, and can greatly purify the city air quality and increase the level of protecting environment, saving energy and reducing discharge.

Description

A kind of uvioresistant self-cleaning coat

Technical field

The utility model relates to a kind of uvioresistant self-cleaning coat, relates to a kind of a kind of uvioresistant Nano self-cleaning coating of building construction carrying surface particularly.

Background technology

Existing building exterior wall through long-term wind and weather, be exposed to the sun, alternation of wetting and drying, cold and hot conversion meeting cause the variable color of building carrying surface, cover dirt, efflorescence, be full of cracks, peeling, aging phenomenon such as come off.Solar irradiation also can make the polymer segment degraded in the synthetic materialss such as plastics, synthetic resin, organic glass cause wearing out.Big quantity research of warp and engineering are used and are confirmed, aging phenomenon mainly is owing to the degraded destruction of sun middle-ultraviolet lamp to substrate and coating causes.The appearance of this phenomenon, not only have a strong impact on the protective action of the attractive in appearance and carrying surface of city building, made carrying surface waterproof and the heat insulation effect that loses, increased the maintenance cost of building and the consumption of energy, owing to cleaning again and constructing, bring the work high above the ground potential safety hazard again.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of maskable ultraviolet ray to directly act on the nano-TiO of substrate ₂Functional self-cleaning coat, slow down colored substrate fade aging, thereby prolong the carrying surface gloss and the effect in life-span.Cause in a short period of time killing bacteria, disappear smelly and remove degreasing, also purify atmospheric environment simultaneously.Really show superpower weatherability, resistance to soiling and corrosion resistance, reach the effect of heat-insulating environment-protection, energy-saving and emission-reduction.

For achieving the above object, the utility model provides a kind of smooth uvioresistant catalytic nanometer self-cleaning coat, mainly increases nano titanium oxide functional coating, described nano-TiO at body of wall base material carrying surface ₂Functional coat is overlying on the surface of body of wall carrying surface substrate, and coating is the following nano-TiOs of particle diameter 20 nanometers ₂Material, thickness are the 2-4 micron.

Described building carrying surface substrate can be selected for use: skin of paint, metal material, plastics external surface, because nano-TiO ₂Functional coat has catalytic action in ultraviolet ray to the hydro carbons chemicals, can also be used in surfaces such as glass, pottery, marble.

The beneficial effects of the utility model are: described nano coating is anatase type nano TiO ₂Material has superpower uvioresistant and absorbs effect, through the spectrophotometer test shows: have extremely strong UV shielding action, UVA (320-400nm) shielding rate is reached 88%; UVB (290-320nm) shielding rate is reached 85%; UVC (200-290nm) shielding rate is reached more than 80%, make the decorative panel that is coated with this nano coating also have good effect of heat insulation owing to have superpower uvioresistant absorption effect.

Self-cleaning coat of the present utility model has beneficial effects such as uvioresistant, anti-aging, the antibiotic anti-enzyme of anti-marquis, antifouling deodorization, and purifying city air quality greatly improves the level of environment-friendly and energy-saving emission-reduction.

The utility model not only can be applied in the external wall material, can also be applied to fields such as solar energy, the vehicles, urban operating mechanism, agricultural be fresh-keeping, equally all can bring into play above-mentioned beneficial effect.

At construction substrate carrying surface spray nano-TiO ₂Coating can utilize sunshine through photocatalysis on the one hand, has the ability that superpower oxidisability is adsorbed with harmful substances, also can utilize nano-TiO ₂Superpower shielding UV function has improved the weatherability of building substrates, because nano-TiO ₂Coating forms powerful tension force to water, so nano-TiO ₂Coating also has superpower hydrophilicity.

Described nano-TiO ₂Functional coat is subjected to have photocatalysis under the ultraviolet radiation in water and air, form hole and free electron.Hole and free electron will be adsorbed on TiO ₂The hydroxyl free radical that the empty G﹠W evaporation oxidation on surface becomes to have strong oxidizing property (OH) and superoxide anion (O ₂ ^-), especially (OH) oxidation capacity is extremely strong.The organic matter such as the greasy dirts such as formaldehyde, toluene that emit in this superpower oxidisability biodegradable vehicle tail gas and the industrial waste gas, be decomposed into carbon dioxide and water, the inorganic matter on top layer such as sulfur dioxide, nitrogen oxide and other simple substance so, just lost adhesive force, when rainy (or water flushing), organic matter of having degraded and the inorganic matter that loses adhesive force are easy to washed away under the Superhydrophilic effect, do not stay water droplet, really reach self-cleaning effect.

Description of drawings

Fig. 1 is the utility model embodiment 1 cross-sectional view.

Fig. 2 is the utility model embodiment 2 cross-sectional view.

Among the figure, 1 substrate, 2 nano coatings.

The specific embodiment

Embodiment 1, and as shown in Figure 1, a kind of uvioresistant self-cleaning coat is with the nano-TiO of particle diameter 5-20nm ₂A certain amount of SiO mixes in the functional colloidal sol ₂Equal solvent fully mixes, and adopts high pressure (0.5MPa) air gun, apart from substrate 10-15cm, by spray, smear, methods such as dipping, spin coating are uniformly coated on the carrying surface substrate 1 coating 2 of formation 2-4 micron.Solidify the back through the sunlight middle-ultraviolet lamp and combine together, fully activate and produce the ultraviolet light catalyzing self-cleaning action with the carrying surface substrate.

Embodiment 2, and as shown in Figure 2, a kind of uvioresistant self-cleaning coat is with reference to the method for embodiment 1 nano-TiO with particle diameter 5-20nm ₂A certain amount of SiO mixes in the functional colloidal sol ₂Equal solvent fully mixes, adopt high pressure (0.5MPa) air gun, apart from substrate 10-15cm, by the surfaces externally and internally that sprays, smears, method such as dipping, spin coating is uniformly coated on construction wall base material 1, the construction wall base material is glass or organic glass, be used in the middle of the commercial buildings such as dome, curtain wall, can produce self-cleaning effect by the effect of photocatalyst on the one hand, on the other hand the photo-catalyst film layer of inner surface can purify air, deodorization, antimycotic antiseptic, improve IAQ (indoor air quality) greatly.

Claims

1, a kind of uvioresistant self-cleaning coat is characterized in that: to be particle diameter be coated in Nano self-cleaning coating on the outer surface of substrate less than 20 nano thickness for the 2-4 micron to described self-cleaning coat.

2, a kind of uvioresistant self-cleaning coat according to claim 1, it is characterized in that: described nano coating is a nano-TiO ₂Material.

3, a kind of uvioresistant self-cleaning coat according to claim 1 is characterized in that: described substrate can be skin of paint, metal material, plastics, glass, pottery, marble.