There is a layer of transparent or pale yellow liquid on top of the ink of the pen (signature pen) to seal the ink, which can prevent the ink from falling down. I took some of this liquid with a mechanical pencil and ignited it with a lighter. .
I would like to ask this liquid is a kind of colloid to prevent ink leakage or ink breakage. Silicone oil ... Emulsified silicone oil. Used in soap-based bath liquid. DC-344. Cyclic polydimethylsiloxane. 195. It has high compatibility with many components in cosmetics, reduces the sticky feeling of the product, and acts as a co-solvent and solid powder dispersant for refreshing type. Creams, lotions, cleansers, lotions, makeup, perfumes. Silicone oil is a polyorganosiloxane with a chain structure of different degrees of polymerization. It is made from dimethyl dichlorosilane and hydrolyzed to obtain an initial polycondensation ring body. The ring body is cracked and rectified to obtain a low ring body. Then, the ring body, the capping agent and the catalyst are put together and fused to obtain each A mixture of different polymerization degrees can be obtained by removing low-boiling substances through distillation under reduced pressure. Silicone oil is generally colorless (or light yellow), odorless, non-toxic, and non-volatile liquid. Silicone oil is insoluble in water, methanol, glycol, and -ethoxyethanol. It is miscible with benzene, dimethyl ether, methyl ethyl ketone, carbon tetrachloride, or kerosene. It is slightly soluble in acetone, dioxane, ethanol, and alcohol. . Silicone oil is divided into methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methylphenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropane according to chemical structure. Base silicone oil, methyl vinyl silicone oil, methyl hydroxy silicone oil, ethyl hydrogen silicone oil, hydroxy hydrogen silicone oil, cyanogen silicone oil, etc .; by application, there are damping silicone oil, diffusion pump silicone oil, hydraulic oil, insulating oil, Heat transfer oil, brake fluid, etc.
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