What is the density of unsaturated resins?
The density is 1.4-2.2g/cm3Unsaturated polyester resin is a thermosetting resin. When it is heated or initiated, it can be solidified into a insoluble, insoluble polymer network. But the mechanical strength of the polymer is very low, can not meet the use requirements, when reinforced with glass fiber can become a kind of composite material, commonly known as "steel and glass" (English Fiber Reinforced Plastics referred to as FRP). Compared with resin casting, the mechanical strength of glass fiber reinforced plastics has been greatly improved.
This problem depends on the type of resin you use. The average unsaturated polyester resin density is in the 1.1~1.2, like some special thixotropic resins. The density is generally around 1.2
The density of FRP is 1.4-2.2g/cm3, 4-5 times lighter than steel, but its strength is not small, and its specific strength is higher than that of section steel, hard aluminium and fir. This is of great importance for products such as aviation, aerospace, rockets, missiles, ordnance and transportation. For example, Boeing 747 jet aircraft in the main structure of the FRP components of 2.2 tons, effectively saving aircraft fuel, increased speed, extended life time, increased payload.