期刊论文

中文

中国塑料

1001-9278

2017

31

6

41-45

10.19491/j.issn.1001-9278.2017.06.007

本校为第一机构

以钛酸钾晶须(PTW)为增强体,采用熔融共混和注射成型法,制备了聚甲醛(POM)/热塑性聚氨酯弹性体(TPU)/PTW复合材料。研究了PTW含量对POM/TPU复合材料力学性能的影响,并借助扫描电子显微镜(SEM)分析了冲击断面形貌。结果表明,TPU的加入有效改善了纯POM的韧性,当TPU含量为10%(质量分数,下同)时,缺口冲击强度是纯POM的2.5倍,但拉伸强度和弯曲强度有所下降;PTW的加入对POM/TPU有较好的增强效果,当PTW含量为15%时,复合材料的拉伸强度、拉伸模量、断裂伸长率、弯曲强度、弯曲模量、缺口冲击强度分别为35.91MPa、24.17%、144.94MPa、12.26GPa、112.1kJ/m~2,拉伸模量、弯曲模量、缺口冲击强度与POM/TPU相...

Reinforced thermoplastic polyurethane elastomer (TPU )/polyoxymethylene (POM ) composites with potassium hexatitanate whisker (PTW)were prepared by a melt mixing method. Effect of PTW content on mechanical properties of TPU/POM composites was studied,and impact fracture morphologies of the composites were investigated by scanning electron microscopy.The results indicated that the impact toughness of POM was significantly improved by the addition of TPU.The notch impact strength of the composites increased by a factor of 2 .5 times compared with that of pure POM when 10 wt % TPU was incorporate...