摘要
首次通过化学沉降法在钛酸钾晶须(PTW)表面包覆纳米碳酸钙得到产品C-PTW,然后对C-PTW进行偶联处理得到产品K-C-PTW。分别把PTW、C-PTW、K-C-PTW添加到聚丙烯(PP)基体材料中,得到相应改性的a、b、c三种复合材料。通过力学性能测试、熔体质量流动速率的测定、扫描电镜、热失重分析及差示扫描量热分析手段表明K-C-PTW晶须在PP材料中不易团聚,分散均匀,与PP材料结合牢固,有效地提高了PP材料的拉伸强度、弯曲强度、缺口冲击强度、分解温度、熔融温度和结晶温度;同时还降低了材料的断裂伸长率及熔体质量流动速率。用K-C-PTW晶须填充PP材料,不仅发挥出PTW晶须的优良力学特性,而且还能充分改善PP材料的性能;更重要的是减少了钛的使用量,有利于工业化生产。
Nanometer calcium carbonate was coated on the surface of potassium titanate whiskers （PTW） by chemical deposition method for the first time, then the product C-PTW was coupled to get the product K-C-PTW. PTW, C-PTW and K-C-PTW were added to polypropylene （PP） matrix material respectively to obtain three kinds of corresponding composite materials. The obtained samples were characterized by mechanical properties testing, melt flow rate determination, scanning electron microscopy （SEM）, thermogravimetric analysis （TGA） and differential scanning calorimetry （DSC）. The results confirm that K-C-PTW is not easy to agglomerate, and it is dispersed evenly and firmly combined with PP material. It effectively improves the tensile and flexuraland notched impact strength and the decomposition and melting and crystallization temperature of PP materials, and it reduces the elongation and melt flow rate of the material at the same time. The K-C-PTW whisker filled PP material not only shows the excellent mechanical properties of PTW whisker, but also can improve the performance of PP materials ; more importantly, it could reduce the amount of titanium, thus conducive to industrial production.
出处
《塑料工业》
CAS
CSCD
北大核心
2016年第8期87-92,共6页
China Plastics Industry
关键词
复合材料
钛酸钾晶须
聚丙烯
纳米碳酸钙
偶联剂
Composite Material
Potassium Titanate Whiskers
Polypropylene
Nano Calcium Carbonate
Coupling Agent
