Tailoring of thermal and dielectric properties of LDPE-matrix composites by the volume fraction, density, and surface modification of hollow glass microsphere filler

2014 ◽  
Vol 58 ◽  
pp. 91-102 ◽  
Author(s):  
B.L. Zhu ◽  
H. Zheng ◽  
J. Wang ◽  
J. Ma ◽  
J. Wu ◽  
...  
2021 ◽  
Vol 261 ◽  
pp. 02016
Author(s):  
Dong Ye ◽  
Lihua Yu ◽  
Gaoyan Hou ◽  
Hong Zhu

Selective laser sintering (SLS) to prepare composites by adding filler into polymer is an effective method to save costs and reinforce the sintered parts. This article investigated the fabrication of PA2200 composites filled with different volume fractions of hollow glass microsphere (HGM) by SLS. HGM was prepared by silane coupling agent surface treatment. The particle size distribution, microstructure, thermal and mechanical properties of PA2200/HGM composites were studied by scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and tensile experiment. The results indicated that the density of the composite was significantly reduced compared to the neat PA2200 and the density decreased with the HGMs content increasing. HGM improved the warping deformation in the process of sintering. The tensile modulus increased while tensile strength and elongation at break decreased as a function of HGM volume fraction in a certain range. This work indicated that thermal properties and tensile properties of polyamide-matrix composites can be reinforced by adjusting HGM content, and PA2200/HGM composite powder is a good material for SLS with less density and lower cost.


2019 ◽  
Vol 135 ◽  
pp. 109105 ◽  
Author(s):  
Guangpeng Gao ◽  
Yan Hu ◽  
Hongyu Jia ◽  
Peng Liu ◽  
Peng Du ◽  
...  

2016 ◽  
Vol 45 (6) ◽  
pp. 426-430 ◽  
Author(s):  
Yingjie Qiao ◽  
Xiaodong Wang ◽  
Xiaohong Zhang ◽  
Zhipeng Xing

Purpose The purpose of this paper is to investigate the preparation and the flexural property of hollow glass microspheres (HGMs) filled resin-matrix composites, which have been widely applied in deep-sea fields. Design/methodology/approach The composites with different contents of HGMs from 47 to 57 Wt.% were studied. The voids in syntactic foams and their flexural properties were investigated. Findings The results showed that the voids quantity increased because of the increment of HGM content, whereas the exural strength and the exural modulus decreased. The fracture mechanism of the composites was also investigated by scanning electron microscope, which indicated that the composites failed by the crack extending through the microspheres. Research limitations/implications The advantages of HGMs with similar hollow spheres will be further investigated in a future research. Practical implications Results demonstrated that the properties of the composite might be tailored for specific application conditions by changing the HGM volume fraction. Originality/value The HGM filled resin-matrix composite materials have their unique properties and significant application potential. In this work, the resin-HGM composites were synthesized by mechanically mixing defined quantities of HGMs into epoxy resin, by which a kind of syntactic foams with good flexural properties could be obtained.


2017 ◽  
Vol 458 ◽  
pp. 52-60 ◽  
Author(s):  
Fang Li ◽  
Jing Li ◽  
Jianhong Feng ◽  
Zhanwen Zhang ◽  
Meifang Liu ◽  
...  

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