DAOREYOU Industrial Grade

1. Performance: The performance of thermal oil includes thermal stability, fluidity and heat transfer (kinematic viscosity, density, thermal conductivity, specific heat capacity and surface heat transfer coefficient). 1) The performance of thermal oil includes thermal stability and heat transfer (kinematic viscosity, density, thermal conductivity, specific heat capacity and surface heat transfer coefficient). Thermal stability is an important performance of thermal oil different from other oils, and the heat carrier tends to deteriorate. The thermal stability evaluation standard is SH / T0680-1999. Under certain temperature and time conditions, examine the appearance of the thermal oil is qualified, the deterioration rate (the sum of gas phase decomposition products, low boilers, high boilers and non-evaporable products) ≤ 10%, the corresponding test temperature is defined as the highest use temperature. The thermal stability index of L-QB and L-QC is 720h at its maximum use temperature, and the total deterioration rate is ≤10%; the thermal stability index of L-QD is 1000h at its maximum use temperature, the total deterioration Rate 10% 3. Thermal conductivity refers to the thermal conductivity of a substance, which is related to the composition, density, pressure, and temperature of the substance. 2) The thermal conductivity oil characterizes the fluidity indicators including pour point and kinematic viscosity. Kinematic viscosity reflects the movement resistance of the liquid and determines the fluidity and pumpability of the liquid at a certain temperature. The requirement of kinematic viscosity of thermal oil is to meet the important indicators of thermal stability, initial boiling point, flash point, etc., while having low viscosity and good high temperature and low temperature fluidity. The pour point and low temperature viscosity determine the low temperature fluidity of the thermal oil. 2. Safety and evaporability: The heat conduction oil safety and evaporability indicators include initial boiling point, flash point and spontaneous ignition point, and moisture. 1) For thermal oil used in open systems, the initial boiling point is an important indicator. Products with a low initial boiling point are used in open systems. The volatilization loss is quite large, which makes the user bear unnecessary economic losses, and reduces the overall safety of the heat transfer system and the economics of the heat transfer oil. It is stipulated that the initial boiling point of the heat transfer fluid used in open equipment is not lower than its maximum service temperature. 2) Flash point and spontaneous ignition point are important indicators that reflect the safety performance of thermal oil. The flash point is too low, which brings hidden dangers to the safe operation of oil products. Therefore, the flash point needs to be controlled.

Uses: used in textile, grease, wood, plastic, rubber industry