Subway shielding door In addition to ensuring the better safety of trains and passengers when entering and leaving the station, the installation of PSD at the subway platform can also significantly reduce the number of lookouts of drivers, reduce the ideological burden of drivers, effectively reduce the loss of cold and hot air at the platform caused by air convection, reduce the impact of noise generated by train operation on the station, and provide a comfortable waiting environment, which is energy-saving, safe Environmental protection, beauty and other functions.
Because metro vehicles are made of DC electric machinery For traction, the rail is used as the return rail, and the rail is insulated from the ground. When the train enters the station, there may be a large potential difference between the rail and the ground. If the potential difference is too large, it will endanger the personal safety of passengers. In order to ensure that there is no step voltage when passengers get on and off the train, and prevent passengers from touching the platform screen door to cause harm or discomfort when the train enters or leaves the station, the platform screen door needs to be insulated, and the door body and track maintain the equal potential.
In order to avoid the danger of electric shock for passengers, Zhisheng Weihua transparent insulation is laid inside and outside the platform floor for heat dissipation coating , coated with insulating film, forming Insulating tape , can achieve the effect of anti-static, referred to as the insulation film scheme.
The application of new insulation research and development technology, and the synthetic technology to improve ZS-411 transparent insulation colorless paint uses cross-linked resin and ceramics After curing, the slurry and coating have high temperature resistance, dense and smooth coating, high transparency, high insulation grade, high thermal radiation coefficient, acid and alkali corrosion resistance, oxygen resistance, ultraviolet aging resistance, high surface tension resistance, large static contact angle, and low surface energy. In comprehensive test, ZS-411 transparent insulation colorless paint coating shows excellent insulation and colorless, and the coating is smooth and clean Very transparent and decorative.
Material composition characteristics:
ZS-411 transparent insulating heat dissipation coating film forming material is a self crosslinking hybrid resin formed by the chelation of poly (trimeric cyanate) intermediate, ketone oxime silane intermediate, and high chain fluorocarbon intermediate in a 250 ℃ reactor. The resin has large cohesion, good synergy, and high degree of crosslinking of functional groups during film forming. ZS-411 transparent insulation heat dissipation coating uses aluminum nitride, mica, boron nitride, limestone, beryllium oxide and other nano materials with high fusion degree with resin, high heat conduction, high heat radiation and high insulation performance as fillers.
Material performance characteristics
1. High temperature resistance of coating:
After the coating is fully cured, the coating can withstand 400 ℃ high temperature, but the coating will have slight yellowing after being heated at 250 "C;
2. High transparency:
ZS-411 transparent insulation and heat dissipation coating adopts high-temperature cross-linked resin and ceramic compound slurry, and the fusion degree between resin and compound is high, the transparency can reach 95% of the water level, and the color and transparency of objects will not be covered when painted on the surface of objects;
3. High insulation level:
After ZS-411 transparent insulating heat dissipation coating is painted and cured, the volume resistivity of the coating is greater than 10 at room temperature eight Ω/mm, AC dielectric strength is greater than 5KV/m, which can effectively prevent the current leakage of electrical materials, prevent electric sparks, and avoid potential safety hazards caused by voltage breakdown of materials;
4. High thermal radiation coefficient:
The film former used in the coating is a hybrid cross-linked resin whose radiation coefficient is more than three times higher than that of a single resin. The filler is a nano ceramic compound with high radiation coefficient, so the comprehensive radiation coefficient of the coating is greater than 0.88;
5. Stable coating property:
ZS-411 transparent insulating heat dissipation coating cross-linked resin and ceramic compound, with good chemical stability, corrosion resistance and aging resistance.
6. Low surface energy of coating:
The coating is dense and smooth, and the surface energy is less than 15x10 -3 N/m， The static contact angle can reach more than 95 °. The coating shows extremely low surface energy, hydrophobic and oil repellent, dust-proof and ash proof, waterproof and sewage discharge characteristics in the test. The coating is easy to clean in use;
7. High adhesion of coating:
The adhesion between the coating and the substrate can reach level 0, especially on materials with large curvature, micro size, smooth surface corners, etc. The coating will not fall off after a long time of use;
8. Long coating life:
The coating is resistant to oxygen aging, ultraviolet aging, acid and alkali corrosion, and can be used for a long time.
Applicable conditions of ZS-411 transparent insulating heat dissipation paint:
1. Strengthen the heat dissipation protection of materials: it is a varnish upgrade coating. Under the condition of constant transparency, improve the protection level of the varnish coating, improve the heat dissipation coefficient of the substrate, and accelerate the heat dissipation;
2. Transparent insulation protection. The coating has high insulation grade and transparency. It is painted on the surface of the object to maintain the color and transparency of the object and improve the insulation grade of the coated material;
3. Transparent acid and alkali resistant protection: the coating is dense, chemical property is stable, acid and alkali resistant, aging resistant, non aging, and non powdering, which can effectively increase the service life of the coated object;
4. Improve the self-cleaning degree of the material surface: coating on the object surface can improve the smoothness of the object surface, improve the static contact angle with the liquid, effectively improve the adhesion of the material to water, oil, dust and dirt, and maintain a good self-cleaning effect on the object surface.
