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Several Methods for Improving the Quality of Transparent Films

2012/8/16      view:

 Ways to Improve the Quality of Transparent Films


The adsorption capacity of the film was improved by increasing the coating temperature. In vacuum coating technology, the stability of MgF: film can be improved by heating the substrate temperature to 300 C. It is well known that TiCI is used. Ti: and Si (OCH3). The thin films obtained by decomposition of the vapor on the Bohry surface at 200-250 (?) C exhibit exceptionally high firmness and chemical stability.


The heat treatment of thin films has great practical significance. For example, the strength and water vapor resistance of thin films heated at 350 (?) C are 5 - 8 times higher than those heated at 100 - 120 (?)C. The effect of heating temperature on vacuum film is also the same. For example, MgF, which is heated to 270-400 C after coating, can greatly improve its chemical properties.


Several Methods for Improving the Quality of Transparent Films


One of the main factors for obtaining film firmness is the cleanliness of the surface of the plated parts. Usually there is a surface layer on the surface of the glass. This surface layer is caused by the glass and wet air, the cleaning solution and the process of grinding the edge on the center. This surface layer has a certain degree of pore coolness. Therefore, it may adsorb the oil and paint swallow which often exist in the room, and the film layer exists in it. These substances hinder the chemical bonding between the film and the glass surface. In addition, the newly polished surface may be contaminated by toluene or other solvents with high boiling point, which can not be easily removed from the pore air of the contaminated layer. Therefore, the binding ability between the film and the plating parts will be reduced when the film is coated, resulting in the formation of a sticky and scattered film. Therefore, the Bori surface must be degreased carefully. The most effective method of vacuum coating is ion surface bombardment, which can release water, gas and other substances adsorbed on the surface of the ship. In addition, the pre-heating of the plated parts plays a decisive role in clearing the interlayer between the Bory surface and the film, which is very helpful for the electroless plating which can not be bombarded by ions.


The methods of high temperature heat treatment of thin films, surface heating of plated parts and sealing of various compounds for the pore of thin films were studied, and the protective methods of interference films were worked out. The method was to treat the titanium and silica films obtained by hydrolysis of hydrocarbon-based organic substances in melted beeswax. This method can be used to obtain oxide films in gaseous or high temperature decomposition of silicone organics. In industry, this method is currently used for the protection of single, double and three antireflective coatings, which are oxide of Qin, Tangerine, Pickup and Silicon.


Often enclosed is the silica film obtained from ethyl silicate acetate ethanol solution, which is usually the outermost layer of the membrane system. In order to achieve effective protection performance, it is necessary to strictly follow a certain proportion of ethyl silicate vinegar, concentration and aging time. Some people believe that the use of 10-12% ethyl silicate solution can effectively protect the performance, in this case the obtained pore size is enough to ensure that wax or other oxide molecules permeate.