The results showed that the optimum mechanical properties of IPN type APU were obtained if 0.010 part of light sensitive agent by mass in APU was used,APU was exposed to the light for 6 min and conditioned for 20 h before light exposure.

• 试验结果表明，当APU中光敏剂质量分数为0?010，光照前停放20h，光照时间为6min时，IPN型APU的力学性能最佳。