What are the properties of solid alcohol

Conditions that affect the performance of Solid alcohol fuel tank:

① Mixing temperature. At very low temperatures, stearic acid cannot be completely dissolved, so solid alcohol cannot be produced. The most suitable temperature is 60°C. At 60°C, the two solutions do not solidify immediately after mixing, so the solutions can be mixed very evenly. After mixing, during the natural cooling process, the alcohol continues to solidify, and finally a uniform solid alcohol is obtained. Although the product produced at 70°C also has a good appearance, this temperature is close to the boiling point of the alcohol solution, and the alcohol evaporates too quickly, so this temperature is not suitable.

② The amount of stearic acid used. As the amount of stearic acid increases, the combustion performance of the product is improved, the flow phenomenon during combustion is reduced, and the burning time is extended. However, as the amount of stearic acid increases, the amount of residue after combustion increases, and the cost of solid alcohol increases. The effect is better when the amount of stearic acid is 6%.

③ The amount of alkali. As the amount of sodium hydroxide added increases, the hardness of the product becomes greater and the curing effect becomes better. When the amount of sodium hydroxide added exceeds 1.5%, the burning time becomes significantly shorter. The more alkali is added, the higher the cost and the greater the corrosiveness. In addition, an obvious burning smell will appear. It is better to control the amount of sodium hydroxide at 1.30%.

④ The influence of additives on the quality of solid alcohol. The flame of alcohol is basically colorless when it burns, but solid alcohol has a yellow flame due to the addition of sodium hydroxide. If 0.5% copper nitrate is added, the various indicators of solid alcohol are basically unaffected, but the flame turns blue when burning. Different salts can be selected and added to solid alcohol to obtain flames of different colors to increase the beauty of combustion.

⑤ Make colorful solid alcohol. By adding colorants to the raw materials, the originally colorless solid alcohol can be made colorful, thus adding interest. The colorant can be phenolphthalein, methyl orange, methyl red, copper nitrate, cobalt nitrate, barium chloride, etc.

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