Study on air dry and corrosion-resistant unsaturated polyester resin

The graft polymerization was carried out between the corrosion-resistant unsaturated resin synthesized from aleic anhydride and diol and the pre-polymer containing air-dried groups prepared with trimethylolpropane allyl ether(TMPDE),TDI and styrene,and the air dry and corrosion-resistant unsaturated polyester resin was obtained.The effect of prepolymer amount on the air dry of the resin and the graft polymerization reaction temperature and time on the degree of response were investigated.The corrosion resistance and mechanical properties of the product resins were tested.The results showed that the product had the best performance as the conditions as followed: mass ratio of selfmade corrosion-resistant unsaturated resin,TDI,TMPDE and the styrene 10∶1∶1∶2,reaction temperature 75-85 ℃ and reaction time 2.0 h.The notched impact strength,flexural strength,flexural modulus and the thermal deformation temperature of the product were 7.56 kJ/m2,71.7 MPa,3.21 GPa and 110 ℃,respectively.The product had long-term corrosion resistant to strong acids,alkalis and oxidizing medium,good air dry and curing ability.