离子液体[BMIM][PF_6]对季戊四醇丙烯醛树脂的增塑性能影响

利用离子液体1-丁基-3-甲基咪唑六氟磷酸盐(BMIM]PF_6])作为季戊四醇丙烯醛树脂(123树脂)的增塑剂,研究了BMIM]PF_6]含量为0~10%条件下其对123树脂增塑性能的影响。分别采用万能试验机和动态力学分析仪(DMA)研究了BMIM]PF_6]对123树脂固化物综合力学性能的影响。结果表明,BMIM]PF_6]能提高123树脂预聚体的流动性,效果优于邻苯二甲酸二乙酯(DEP),加入10%的BMIM]PF_6]能将123树脂预聚体50℃粘度降至185mPa·s。BMIM]PF_6]含量越多123树脂固化物的断裂延伸率越大、拉伸强度越小,加入10%的BMIM]PF_6]的123树脂固化物的断裂延伸率和拉伸强度分别为14.2%和38.2MPa。123树脂固化物的玻璃化温度随BMIM]PF_6]含量增加而降低,韧性随BMIM]PF_6]含量增加而增加。

Effect of Ionic Liquid [PF6] on Plasticizing Properties of Acrolein-pentaerythritol Resin

Ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate(BMIM]PF6])was used as a plasticizer of acrolein-pentaerythritol resin(123 resin).The effect of BMIM]PF6] content under the condition of 0~10% on the plasticizing properties of 123 resin was studied.The comprehensive mechanical properties of cured 123 resin were studied by an universal testing machine and a dynamic mechanical analyzer(DMA)respectively.Results show that BMIM]PF6] can effectively improve the flowability of prepolymer of 123 resin,the effect is better than that of diethyl phthalate(DEP)and addition of 10% BMIM]PF6] can make the viscosity of 123 resin prepolymer at 50℃ reduce to 185 mPa·s.The more the BMIM]PF6] content,the greater the elongation at break and the lower the tensile strength of 123 resin cured products,and the elongation at break and tensile strength of 123 resin containing 10% BMIM]PF6] are 14.2% and 38.2 MPa,respectively.The glass transition temperature decreases and tenacity increases of 123 resin cured products with the increasing of BMIM]PF6] content in 123 resin.