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	We are using mineral cutting oil, but the LED of WPi has stayed lit.
	Fluororubber is used for products. It has strong properties against mineral and vegetable oils. However, if the surfactant is contained in the additive, the fluororubber will be melted. At our company we do not recommend cutting oil containing surfactant, we can not guarantee the trouble that occurred. Synthetic surfactant is used for emulsion type cutting fluid. Synthetic surfactants are not all bad, but let's choose something that is highly safe. It is prudent not to use oil which does not reveal its ingredients. [One point Explanation] Surfactants is "natural surfactants" found in nature and "synthetic surfactants" made from petroleum it is two type. It has functions such as washing, foaming, emulsification and moisturizing, and it is used for many daily necessities and cosmetics. The problem is that it has high toxicity, high penetration and high persistence. It has an adverse effect on the body and can not be decomposed and removed even by sewage treatment, so it also contaminates the sea and rivers. "Synthetic surfactant" is said to have about 2,000 to 3,000 kinds, not only detergent, but also foods and so on It is also widely used in medicine, cosmetics and so on. There are kitchen detergents, laundry detergents, household detergents and all kinds of detergents, but "fatty acid NatoRium "or" fatty acid potassium "is indicated as" soap "(pure soapIt may be displayed as a minute, soap base and it is "natural surfactant". All others are "synthetic surfactants" (synthetic detergents). "Synthetic surfactant" is said to possibly affect carcinogenicity and endocrine hormones. Among them, "sulfuric acid" "sulfonic acid" is a thing to be noted. It has high detergency and is prone to rough skin. So-called "cleaning action to remove dirt" used for detergents, facial cleansers, shampoos and the like, such things as "foaming with good foaming" are conspicuous. In food, medicine and cosmetics, it is often used as "emulsifying action" in the notation of emulsifier. For example, dressing is made of vinegar and oil, but before use it is divided into two layers, use Shake it well and mix well when you do. This is emulsification. However, although it mixes temporarily, after a while it will return to the original two-tier again. The surfactant can mix such non-mixable ones for a long time. Mix egg yolk in dressing and you can do something like mayonnaise. What is contained in this egg yolk is a component called "lecithin" and acts as a surfactant. The human body also has water-soluble and oil-soluble ones, which mediate this "lecithin". Human cells, which are said to be about 60 trillion, always contain these "lecithin", and as a surfactant It is said that it is said that its work is very big. Dissolve cholesterol stuck in the blood vessels and waste matter substances in the cells. "Lecithin" serves as a surfactant as a natural emulsifier. In addition to cosmetics and other foods, for example, mayonnaise, butter, margarine, milk etc,It is used. The surfactant has such a very excellent function in this way, it is not bad at all It is important to figure out what it is made from. It is human beings that they are substances in the human body or substances close to it is. Many of "synthetic surfactants" are highly functional and function stably for a long time, "Natural surfactant" is highly safe but easily oxidized and has a slightly inferior function. these Let's try to understand well that there are advantages and disadvantages! Because of the nature of combining substances that are not mixed, it melts the part that was two layers. Human skin is protected from harmful substances in the skin membrane, but "surfactant" go through a skin membrane and stratum corneum and can penetrate into the body. It also invades the blood and spreads throughout the body through blood vessels.
	For example, • Detergent remaining in dishes will enter the body with food. • The detergent that remains in the clothes will melt into sweat and enter the body. • Deodorant sprayed in the room will go into the body through the mouth and nose etc. • Break protein. • It can not be broken down by the liver when absorbed into the body. • It is said that it destroys the liver cells, it is said that it may cause liver damage and carcinogenesis. - When do you wash your face and hands, did you will never feel a null null feeling, it is a nature that easily remains on your skin.
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