有机微球对聚氨酯弹性体性能的影响

Effect of Organic Microsphere on Properties of Polyurethane Elastomer

选用聚醚多元醇3600,36/28和液化二苯基甲烷二异氰酸酯(MDI)等原料,填充有机微球,采用一步法合成基体材料,通过改变有机微球种类及用量,研究其对基体材料的物理机械性能和动态性能的影响。结果表明,有机微球的加入使基体材料力学性能和电阻率有所下降,但动态性能变好。且当有机微球为AK-920填充所得的复合材料拉伸强度、撕裂强度和电阻率下降至最小,动静刚度比和动态损耗因子均较小。AK-920填充比例为A组分的0.2%时复合材料的综合性能最好。

This article studies the effect of organic microspheres＇ type and dosage on the mechanical properties and dynamic properties of the matrix after synthesizing the matrix material in one step method with polyether polybasic alcohol （type 3600, type 36/28 ）, liquefied diphenylmethane diisocyanate （MDI） and other materials as raw materials. The results show that the organic microspheres make the mechanical properties and electrical resistivity of the matrix material decrease, but the dynamic performance goes better. When the organic microspheres type was AK-920, the tensile and tear strength and electrical resistivity of the composites decrease to the minimum, and the ratio of static stiffness to dynamic stiffness and the dynamic loss factor are both small. The comprehensive performance of the composites is the best when the AK-920 filling ratio is 0. 2% for the A component.