PDF下载
分享
[1]温纪宏 李焱 黄栋 张新鹏 喻西崇 周琼.SiO2 纳米粒子改性 PVDF 复合材料气体渗透行为 [J].油气储运,2023,42(01):1-07.
　WEN Jihong,LI Yan,HUANG Dong,et al.Gas permeation behavior of PVDF composites modified bySiO2 nanoparticles [J].Oil & Gas Storage and Transportation,2023,42(01):1-07.
点击复制

SiO2 纳米粒子改性 PVDF 复合材料气体渗透行为

 

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 42 期数: 2023年01期 页码: 1-07 栏目: 出版日期: 2023-01-25
Title:
Gas permeation behavior of PVDF composites modified by
SiO2 nanoparticles

 

作者:
温纪宏 李焱 黄栋 张新鹏 喻西崇 周琼

 

Author(s):

 

关键词:

 ; 

Keywords:

 ; 

分类号:
TE832
文献标志码:
A
摘要:
为改进聚偏氟乙烯（PVDF）的渗透性能，采用硅烷偶联剂 3-氨丙基三乙氧基硅烷（KH-550）对 SiO2 进行表
面改性，通过熔融共混法制备 SiO2/PVDF 纳米复合材料，并研究改性前后纳米粒子对复合材料热力学性能、力学
性能及气体阻隔性的影响。改性 SiO（2 N-SiO2）在基体中的分散性显著提高。掺杂改性纳米粒子后，PVDF 的渗
透系数显著降低；由于改性 SiO2 良好的分散性，PVDF/N-SiO2 阻隔性能更为优异，其中 1.0％ N-SiO2 体系的渗透
系数较纯 PVDF 降低 18.6％，气体阻隔性最佳。此外，随着温度上升，渗透系数增加，研究结果可为柔性立管内衬
层材料阻隔性改善提供参考。

 

Abstract:
In order to improve the permeation performance of polyvinylidene difluoride (PVDF), the surface modification was carried out to
SiO2 with 3-aminopropyl triethoxysilane (KH-550). The SiO2/PVDF nanocomposite was prepared by the melt blending method to study the
effects of nanoparticles on the thermodynamic property, mechanical properties, and gas barrier property of the composite before and after
modification. According to the results, the dispersion of the modified SiO2 (N-SiO2) in the matrix is significantly improved. The permeability
coefficient of PVDF is significantly reduced after the addition of modified nanoparticles, but the barrier property of PVDF/N-SiO2 becomes
better due to the good dispersion of the modified SiO2. Specifically, the 1.0% N-SiO2 has the permeability coefficient 18.6% lower than that
of the pure PVDF and has the best barrier property. In addition, the permeability coefficient increases as the temperature rises. Generally, the
research results could provide reference for improving the barrier property of lining in the flexible riser

 

更新日期/Last Update: 2022-11-30