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Refractory mica tape-Refractory insulation
Release time:
12 Jan,2024
High temperature resistance: synthetic mica belt fluorine gold mica belt, does not contain crystal water, melting point 1375 ℃, safety margin, high temperature resistance is the best, phlogopite releases crystal water above 800 ℃, high temperature resistance is the second, muscovite releases crystal water at 600 ℃, high temperature resistance is poor.
Refractory mica tape for fire-resistant cables Refractory mica tape for fire-resistant cables is a high-performance mica insulation product with excellent high temperature resistance and combustion resistance. The powder mica tape has good softness when it is normal, and is suitable for the main fire-resistant insulation layer in various fire-resistant cables. In the case of open flame combustion, there is basically no harmful smoke volatilization, so the product is not only effective for cables, but also very safe.
Synthetic mica is an artificial mica with large size and complete crystal form, which is synthesized by fluorine ion instead of hydroxyl group under normal pressure. Synthetic mica tape is made of synthetic mica paper as the main material, and then paste glass cloth on one or both sides with adhesive. Paste the glass cloth on the mica paper to make a "single-sided tape" and a "double-sided tape" on both sides ". In the manufacturing process, several structural layers are glued together, then dried in a stove, then rolled up, and then cut into tapes of different specifications. In addition to the characteristics of natural mica tape, namely, small expansion coefficient, high dielectric strength, high resistivity and uniform dielectric constant, synthetic mica tape is characterized by high heat resistance and can reach Class A fire resistance level (950-1000 ℃).
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Application of synthetic mica tape in fire-resistant cable
The application field of fire-resistant cable is gradually expanding, from the original offshore oil platform to aviation, aerospace, navigation, subway, tunnel, commercial building, hospital, dance hall, metallurgy, chemical industry and power plant, etc., which require high fire resistance rating. In recent years, with the maturity of the manufacturing technology of fire-resistant synthetic mica tape, the amount of fire-resistant cables manufactured with it is increasing. As we all know, the refractory mica tape is divided into two categories: *(950-1000 ℃) and B (750-800 ℃).
Refractory mica tape-Refractory insulation
High temperature resistance: synthetic mica belt fluorine gold mica belt, does not contain crystal water, melting point 1375 ℃, safety margin, high temperature resistance is the best, phlogopite releases crystal water above 800 ℃, high temperature resistance is the second, muscovite releases crystal water at 600 ℃, high temperature resistance is poor.
Calculation method of used quantity of polyethylene heat shrinkable winding tape
Heat shrinkable tape (open sleeve) is used to prevent corrosion at the welding place of two steel pipes. What is important is to use a set of heat shrinkable tape for one joint joint. The specifications are divided according to the pipe diameter and the price is sold according to one set. Therefore, a set of heat shrinkable tape will contain all the materials required for this weld joint corrosion protection: main tape; Epoxy primer; Fixing sheet; Adhesive tape.
How much do you know about wire and cable wrapping?
1. protect the insulation or inner sheath layer from damage to the armor when the cable is armored, and play the role of buffer and liner. 2. in the process of cable use, due to different materials on the cable insulation or inner sheath layer from heat insulation, or anti-corrosion, anti-aging and other different effects.
Flame retardant cable is characterized by delaying the spread of flame along the cable so that the fire does not expand. Whether it is a single cable or a bundle of laying conditions, the cable is known to burn when the spread of the flame can be controlled within a certain range, so you can avoid the fire caused by the major disasters, thereby improving the fire level of the cable line.
What is halogen-free flame retardant belt?
Halogen-free flame retardant products with flame retardant level up to UL94-V0 standards, does not contain fluorine, chlorine, bromine, iodine halogen. Low smoke when burning, more environmentally friendly. The product has good self-adhesion, completely self-melting in a short time, no layering, and good sealing. The self-adhesive tape has good ductility, insulation and excellent physical properties.