Petroleum resin can be widely used in various industries,Petroleum Resin such as paint, rubber, etc. Why is petroleum resin so popular?
Petroleum resin advantages: Petroleum resin is a newly developed chemical product in recent years. Because of its low price, good miscibility, low melting point,Petroleum Resin water resistance, ethanol resistance and chemicals,Petroleum Resin it can be widely used in rubber, adhesives, coatings,Petroleum Resin Various industries and fields such as paper making and ink.
The difference between petroleum resin and other thermosetting compounds is that it does not emit low-molecular compounds during the curing process,Petroleum Resin and it has a high degree of condensation in the liquid state. The curing time is through direct addition. For an unmodified system, the shrinkage is tiny. Generally,Petroleum Resin it is about 2%, which means that the volatility between the molecules is very small. Petroleum resin was cast into a standard mold,Petroleum Resin the volume of the standard mold cavity and the volume of the sample after molding were measured,Petroleum Resin and the volume shrinkage of the sample was calculated.
Test method: Disassemble the mold and take out the resin sample after molding,Petroleum Resin and then use calipers to accurately measure the cavity size (including length, width, and height) of the mold frame of the mold,Petroleum Resin accurate to 0.01 mm. )Hang the resin sample on the balance with copper wire or hairline and weigh it in the air,Petroleum Resin then put the sample into 20 distilled water, weigh it in water, and weigh the accuracy to 0.001 g
