In unsaturated resins, what do solids refer to?
Gel timeThe gelation time is generally gel time was measured at 25 DEG C or 80 DEG.25 DEG C refers to the resin from adding initiator and accelerator to become soft and gelatinous mobility lost time. Sometimes the gel time can also be interpreted as the resin in the actual construction process of the operational impact time. Very large temperature and humidity environment, the gel time of initiator and accelerator dosage on the resin.
Solid contentSolid content refers to the temperature at which the resin is heated at a certain temperature and the mass of the residue remains equal to the quality of the original sample
acid valueIs that the extent of reaction resin acid value index. The acid value is defined as the number of milligrams of KOH required with 1g resin, the acid value in mgKOH/g. Generally speaking, the smaller the reaction of high acid resin, resin acid and its formula but a great relationship, eventually stuffed formula values of different resins different.
The technical specifications of unsaturated polyester resins are as follows:viscosityIs the viscosity of the resin flow of the reaction. The viscosity reflects the size of resin wetting or soaked filler, reinforcing material. The viscosity index at 25 DEG C. Determination of temperature and diluent content has great influence on the viscosity. Different process such as hand paste, pultrusion, winding, injection of resin viscosity the requirements are different. The resin viscosity at Pa - S. Sometimes the unit is CP, the conversion relation is 1000cp = 1Pa - SViscosity is generally referred to as dynamic viscosity, and its unit is pa seconds (Pa. S) or mPa s
