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Study on mechanical properties of nano-Sb2O3/BEO-PBT flame retardant composites reinforced by surface-modified basalt fiber
Journal of Adhesion Science and Technology ( IF 2.3 ) Pub Date : 2021-09-27 , DOI: 10.1080/01694243.2021.1972652
Jianlin Xu 1, 2 , Jiliang Fan 1, 2 , Chenghu Kang 1, 2 , Lei Niu 1, 2 , Chunyan Ju 3
Affiliation  

Abstract

In this study, the cationic surfactant cetyl trimethyl ammonium bromide (CTAB) and silane coupling agent N-(β-aminoethyl)-γ-aminopropylmethylbimethoxy silane (KH602) were used as modifiers to improve the interfacial bonding strength between basalt fiber (BF) and PBT matrix. Using single modified and compound modified BF as reinforcing fillers, BF/nano-Sb2O3/BEO-PBT composites were prepared by injection molding. The structure characteristics of modifiers on the surface of BF were studied by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The mechanical, crystallization, thermomechanical properties and flame retardancy of BF/nano-Sb2O3/BEO-PBT composites were investigated using the tensile testing machine, impact testing machine, scanning electron microscopy (SEM), differential scanning calorimeter (DSC), dynamic mechanical analyzer (DMA), limiting oxygen index (LOI) and vertical combustion tester, respectively. The results showed that the CTAB and KH602 were successfully introduced into the surface of BF and the interfacial bonding strength between BF and PBT matrix was increased. The addition of BF did not reduce the flame retardancy of nano-Sb2O3/BEO-PBT composites. The tensile strength and Young's modulus of the BF/nano-Sb2O3/BEO-PBT composites were significantly improved and the notch impact strength was slightly increased with the use of modified BF. In terms of the mechanical properties of BF/nano-Sb2O3/BEO-PBT composites, the BF obtained an excellent enhancement effect on the composites when modifiers were applied by means of the compound modification with CTAB and KH602.



中文翻译:

表面改性玄武岩纤维增强纳米Sb2O3/BEO-PBT阻燃复合材料力学性能研究

摘要

本研究以阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)和硅烷偶联剂N-(β-氨基乙基)-γ-氨基丙基甲基二甲氧基硅烷(KH602)为改性剂,提高玄武岩纤维(BF)与PBT 矩阵。以单一改性和复合改性BF为增强填料,通过注塑成型制备BF/nano-Sb 2 O 3 /BEO-PBT复合材料。采用傅里叶变换红外光谱(FTIR)和X射线衍射(XRD)研究了BF表面改性剂的结构特征。BF/nano-Sb 2 O 3的机械、结晶、热机械性能和阻燃性分别使用拉伸试验机、冲击试验机、扫描电子显微镜(SEM)、差示扫描量热仪(DSC)、动态力学分析仪(DMA)、极限氧指数(LOI)和垂直燃烧测试仪对/BEO-PBT复合材料进行了研究. 结果表明,CTAB和KH602成功引入BF表面,提高了BF与PBT基体的界面结合强度。BF的添加并未降低纳米Sb 2 O 3 /BEO-PBT复合材料的阻燃性。BF/nano-Sb 2 O 3的抗拉强度和杨氏模量/BEO-PBT复合材料显着改善,缺口冲击强度随着改性BF的使用略有增加。在BF/nano-Sb 2 O 3 /BEO-PBT复合材料的力学性能方面,通过CTAB和KH602的复合改性,BF对复合材料的改性效果显着。

更新日期:2021-09-27
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