摘要
粉煤灰粒径细小、硬度高,可作为填料用于制备力学性能良好、价格低廉的聚合物复合材料,实现变废为宝目的。本文立足于高填充型粉煤灰/PVC复合材料的制备,探讨了粉煤灰的表面改性规律及增塑剂对粉煤灰/PVC共混体系流变性的影响,发现增塑剂(邻苯二甲酸二异辛脂)和复合改性剂(硅烷与硬脂酸)可以显著提高粉煤灰在PVC中的分散性与相容性,由此制得力学性能良好的高填充粉煤灰/PVC复合材料。在粉煤灰300份、PVC100份、DBP25份、硬脂酸1.5份、硅烷1.5份条件下,制得的复合材料弯曲强度达到29.1 MPa。
Fly ash with fine particle size and high hardness can be used to prepare PVC composites with perfect mechanical properties and low cost.With the aim of producing PVC composite with high filling of fly ash,the surface modification of fly ash and the influence of the plasticizeron on the rheological behavior of composite were investigated.PVC composite with high filling of fly ash and perfect mechanical properties was fabricated by use of the plasticizer（DIOP,diisooctyl phthalate） and the modifiers（silane and stearic acid） owing to the improvement of the dispersion and compatibility of fly ash in PVC.PVC-fly ash composite with a bending strength of 29.1 MPa was produced at the optimized condition（mass ratio）：fly ash：PVC：DIOP：stearic acid：silane were 300：100：25：1.5：1.5.
出处
《中国有色冶金》
CAS
2014年第1期67-71,共5页
China Nonferrous Metallurgy
基金
国家自然科学基金(No.51234003)
国家高技术研究发展计划(No.2012AA061602)
关键词
粉煤灰
PVC
高填充量
流变性
表面改性
fly ash
PVC
high filling
rheological property
surface modification
