Composite metal electrothermal film sol and method for producing electroheating tube with the same
A composite metal, electrothermal film technology, applied in the direction of heating element materials, etc., can solve the problems of ignition breakdown, change of crystal electrical characteristics, environmental pollution, etc., to improve the withstand capacity of voltage and power, improve hardness and strength, avoid Effects of air pollution
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Embodiment 1
[0028] Example 1: A composite metal electric heating film sol. The composition of the sol is prepared with the following parts by weight of raw materials: 15 parts of nano-sized tin powder, 7.5 parts of antimony trichloride, 3 parts of stannous chloride, chlorine 0.07 parts of gold, 0.07 parts of germanium tetrachloride, 1.6 parts of silver chloride, 0.7 parts of nickel chloride, 3 parts of copper chloride or zinc chloride, 3 parts of sodium chloride or potassium chloride, 45 parts of deionized water, 189.4 parts of ethanol. After the sol of this formula is made into an electric heating film, its withstand voltage strength is 450Vac, and its withstand power strength is 25W / cm 2 , The temperature intensity of 750 ℃ to withstand the heat of dry burning. In the film power intensity 25W / cm 2 , The water flow rate is 0.5L / min, the standard voltage is 250Vac, and the film surface temperature is 450℃. Continuously energize and run with water for 5000h without damage.
Embodiment 2
[0029] Example 2: A composite metal electric heating film sol, the composition of the sol is prepared with the following parts by weight of raw materials: 8 parts of nano-sized tin powder, 4 parts of antimony trichloride, 1 part of stannous chloride, chlorine 0.01 part of gold, 0.01 part of germanium tetrachloride, 0.8 part of silver chloride, 0.1 part of nickel chloride, 7 parts of copper chloride or zinc chloride, 7 parts of sodium chloride or potassium chloride, 24 parts of deionized water, 99.2 parts of ethanol. Its withstand voltage strength is 250Vac, and its withstand power strength is 10W / cm 2 .
Embodiment 3
[0030] Example 3: A composite metal electric heating film sol, the composition of the sol is prepared with the following parts by weight of raw materials: 20 parts of nano-sized tin powder, 10 parts of antimony trichloride, 4 parts of stannous chloride, chlorine 0.1 part of gold, 0.1 part of germanium tetrachloride, 2 parts of silver chloride, 1 part of nickel chloride, 2 parts of copper chloride or zinc chloride, 2 parts of sodium chloride or potassium chloride, 60 parts of deionized water, 312 parts of ethanol. Its withstand voltage strength is 110Vac, and its withstand power strength is 20W / cm 2 .
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