Influencing of curing time on film hardness is discussed through modifying the ratio of paint and curing agent. The defects from spraying process and the countermeasures are narrated.
Development tendency of mechanical properties is: density increase oil content ratio decreases, Brinall hardness increases, crushing strength goes down first and then goes up.
机械性能的变化趋势是：密度增加，含油率下降，布氏硬度增加，而压溃强度先降低后增加。
3
Hardness, the ratio of hydrophilic and hydrophobic materials and viscosity had notable effects on the lag time.