The surface of the silicon carbide rod is covered by a fully fused dense solidified slag layer, and slag bubbles are formed. [1]
——Quoted from DL/T1106-2009 Test Method for Slagging Characteristics and Burnout Rate of Pulverized Coal Combustion in One dimensional Flame Furnace
- Chinese name
- melt
- Foreign name
- fusion
- Foreign name
- molten ash deposits
- Nature
- First order phase transition
English: melting; fusion， Melting is Primary phase transformation , fused with Enthalpy 、 entropy And volume increase. The melting temperature is called melting point or Melting temperature 。 Small molecule The melting point temperature range of the crystal is very narrow (generally less than 1 ℃), and polymer Due to incomplete crystallization, the melting temperature is usually in a wide range (generally 10-20 ℃). normal atmospheric temperature Below is the solid material after reaching a certain temperature melt , become liquid, called melt Status. It is also liquid, but unstable at room temperature. Melting state is a term used in chemistry, corresponding to the solid liquid in the melting process in physics coexistence state 。 Only the crystal may be at the melting point Solid liquid coexistence Status. Fibrillar Ignition point 、 Heat of combustion 、 flame temperature and Oxygen limiting index Such indicators are decisive to the degree of flammability, the spread and expansion of fire. Some fibers are heated while burning melt , like Candle oil It is also separated from the fire source. It can alleviate burning, but Melt If it contacts with the skin, it will cause serious burns that are difficult to peel off. Synthetic fibre There is melting problem, and Cellulosic fibre Blended Textile In the test, no molten matter can be dropped, but the problem of sticking and scalding skin still exists Flame retardant Finishing, or in synthetic fibers Spinning solution Joined in Flame retardant It can make the synthetic fiber meet the flame retardant requirements, but the melting point changes little. Eutectic and eutectic
Eutectic ——Refers to phase diagram In Eutectic point It refers to co melting of several phases at the point where co melting begins. Co melting - means melting together.
