• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Effect of inorganic–organic surface modification of calcium sulfate whiskers on mechanical and thermal properties of calcium sulfate whisker/poly(vinyl chloride) composites
【24h】

Effect of inorganic–organic surface modification of calcium sulfate whiskers on mechanical and thermal properties of calcium sulfate whisker/poly(vinyl chloride) composites

机译：硫酸钙晶须的无机-有机表面改性对硫酸钙晶须/聚氯乙烯复合材料力学和热性能的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Coupling agents are traditionally used to improve the interfacial adhesion between inorganic fillers and a polymer matrix; however, the application of this method is somewhat limited by the number of hydroxyl groups on the surface of inorganic fillers. In this study, a layer of calcium hydroxide (Ca(OH)2) was coated on the surfaces of calcium sulfate whiskers (CSW) through hydroxylation modification using sodium hydroxide (NaOH) to increase the hydroxyl groups of the CSW, and then a polyether titanate coupling agent synthesized in our lab was used to modify Ca(OH)2 coated CSW in order to improve their compatibility with poly(vinyl chloride) (PVC). The chemical structure and surface properties of the modified CSW were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and water contact angle (WCA). Then, CSW/PVC and modified CSW/PVC composites were prepared via a two-roll mill, and the effects of the inorganic–organic surface modification of CSW on their mechanical and thermal properties were evaluated. The results show that hydroxylation modification can further improve the compatibility and the interfacial adhesion between CSW and the PVC matrix, which results in better mechanical and thermal properties.
机译：传统上，偶联剂用于改善无机填料与聚合物基体之间的界面粘合力;然而，该方法的应用在一定程度上受到无机填料表面上羟基数目的限制。在这项研究中，通过使用氢氧化钠（NaOH）的羟基化改性，在氢氧化钙晶须（CSW）的表面上涂覆一层氢氧化钙（Ca（OH） 2 ） ）以增加CSW的羟基，然后使用我们实验室合成的聚醚钛酸酯偶联剂对Ca（OH） 2 包覆的CSW进行改性以改善它们与聚氯乙烯（PVC）的相容性。通过X射线衍射（XRD），傅立叶变换红外光谱（FTIR），扫描电子显微镜（SEM），能量色散光谱（EDS），X射线光电子能谱（XPS）表征了改性CSW的化学结构和表面性质。 ）和水接触角（WCA）。然后，通过两辊轧机 制备了CSW / PVC和改性的CSW / PVC复合材料，并评估了CSW的无机-有机表面改性对其力学性能和热性能的影响。结果表明，羟基化改性可以进一步改善CSW与PVC基体之间的相容性和界面粘合性，从而获得更好的机械和热学性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号