Is The Pre-insulated Casing Harmful To The Human Body?

Whether pre insulated sleeve is harmful to the human body, we must first analyze the material composition of pre insulated junction sleeve. insulated joint sleeve is made of alkali-free glass fiber woven into a tube, then coated with silicone resin, and then treated at high temperature. Some will add a layer of silicone rubber to make a silicone rubber pre-insulated sleeve, or add polyurethane to make a polyurethane pre-insulated sleeve. No matter how many kinds of materials are used to make the pre-insulated sleeve, glass fiber is a necessary material. Let's first analyze whether the pre-insulated sleeve is harmful to manpower. At present, most of the glass fiber materials are composed of silicon dioxide, which is not toxic to the human body, but it cannot be decomposed in the human body. Generally speaking, the floating particles of glass fiber in the air have certain harm to the trachea and respiratory tract, and also have certain irritation to the skin, especially for people with allergic constitution. If the glass fiber is above 9 microns, the harm is not great, and breathing will not directly enter the lungs, but if you produce yarn below 6 microns, you must pay attention. The yarn with a single fiber below 6 microns can directly enter the lungs through breathing, and professional protective equipment must be worn for production.

Silicone resin is an important component of pre-insulated casing. Is the resin in pre-insulated casing harmful to the human body? Common resins include methyl vinyl silicone resin, vinyl silicone resin, methyl silicone resin and fluorosilicone resin. Pre-insulated casing is commonly used for vinyl silicone resin, the main component of which is vinyl siloxane, which is formed after addition vulcanization. Generally, silicone resin is added with solvent. MQ (methyl silicone resin) is a solid powder, and the solvent is toxic. After molding, the solvent is completely volatilized and non-toxic. If the label is correct, edible silicone resin is non-toxic.

Finally, let's discuss whether pre-insulated casing is harmful to the human body. When the pre-insulated casing is in direct contact with human skin, no discomfort will occur. Because the glass fiber will not have problems such as burrs after weaving, and the outer layer is also coated with a layer of glue to avoid being pierced by protruding burrs when using the casing.