结构变化对梯度互穿网络聚合物力学性能影响的研究

Study on Effect of Structure Variation on Mechanical Property of Graded Interpenetrating Ploymer Networks(IPNs)

设计了一种新的梯度组分分布数学模型,采用梯度因子和梯度层数控制梯度组分的分布,研究了梯度结构变化对梯度IPNs力学性能的影响。结果表明,梯度层数越多,梯度IPNs的拉伸性能和抗冲击性能越优异,随着梯度因子的增加,梯度IPNs的拉伸性能先平缓增加,当梯度因子过高时,梯度IPNs的拉伸性能显著下降,梯度IPNs的抗冲击性能随着梯度因子先显著增加,然后平缓变化。梯度IPNs的力学性能优于普通IPNs。

A new mathematic model was adopted to design the distribution of graded component in graded IPNs, Both graded layers number and graded factor were used to control the distribution of graded component, the effect of graded structure on mechanical properties was studied, The results indicate that both tensile property and impact prop- erty enhance gradually with Increase of number of graded layer. Tensile property primarily decreases with graded fac- tor, when graded factor value is too high, tensile property of graded IPNs decreases quickly. Impact property of graded IPNs primarily increase with increase of graded factor sharply. Then it change gently. Mechanical property of graded IPNs is superior to those of ordinary IPNs.