scholarly journals Surface modification of hollow glass microsphere and its marine-adaptive composites with epoxy resin

2020 ◽  
Vol 29 ◽  
pp. 2633366X2097468
Author(s):  
Rui Li ◽  
Peng Wang ◽  
Peng Zhang ◽  
Guisen Fan ◽  
Guojun Wang ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Epoxy Resin ◽  
Interfacial Adhesion ◽  
Absorption Rate ◽  
Glass Microsphere ◽  
Hollow Glass Microsphere ◽  
Diphenylmethane Diisocyanate ◽  
Hollow Glass ◽  
Adaptive Composites ◽  
Better Than

A novel epoxy resin (EP)/hollow glass microsphere modified (g-HGM) composite was successfully prepared. Studies showed that the water absorption rate of the g-HGMs/EP composite is lower than pure HGMs/EP and HGMs-KH550/EP composites, while the compressive strength of g-HGMs/EP composites could be increased. The enhanced interfacial adhesion between EP and g-HGMs played an important role to improve the compatibility of the two components. The g-HGMs show little effect on density (relative to HGMs) on the g-HGMs/EP composites, which can perform better than the HGMs/EP composites being used in marine environments. It was found that the optimal content of 4,4’-diphenylmethane diisocyanate in the epoxy component was 20 wt%.

Effect of Hollow Glass Microsphere on Performance of Foam Concrete

2013 ◽  
Vol 539 ◽  
pp. 64-69 ◽  
Author(s):  
Qing Wang ◽  
Lin Ge Qiu ◽  
Qi Yao ◽  
Zhao Yang Ding ◽  
Xi Fan Yan
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Negative Relationship ◽  
High Strength ◽  
Glass Microsphere ◽  
Dry Density ◽  
Hollow Glass Microsphere ◽  
Foam Concrete ◽  
Hollow Glass ◽  
Good Thermal Stability

Dry density and compression strength of foam concrete are conflicting, there is a negative relationship between them. Hollow glass microsphere is a new lightweight material which is lightweight, high strength, low thermal conductivity and good thermal stability. In order to prepare lightweight and high-strength foam concrete, this paper researched the effects of different dosage on dry density and compressive strength of foam concrete through adding hollow glass microspheres. The results show that the thermal conductivity of foam concrete increased as the hollow glass microsphere increases, and the dry densities of foam concrete are between 120-200 kg•m-3, compressive strength reaches 0.1MPa.

Concrete with Addition of Hollow Glass Microspheres

2015 ◽  
Vol 820 ◽  
pp. 509-514
Author(s):  
Cindy Yuri Ueki Peres ◽  
Antonio Hortêncio Munhoz ◽  
L.F. Miranda ◽  
A. Cabral Neto ◽  
A.R. Zandonadi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Glass Microsphere ◽  
Hollow Glass Microsphere ◽  
Glass Microspheres ◽  
Hollow Glass Microspheres ◽  
High Mechanical Strength ◽  
Hollow Glass ◽  
Glass Spheres ◽  
Concrete Mix

The addition of hollow glass spheres is interesting to reduce the thermal conductivity of the concrete pieces. This work aims to evaluate the concrete with addition of hollow glass microsphere with different combinations of dosage in concrete concerning strength and workability. Slump tests were performed in each dosage of concrete in order to evaluate the effect of glass microspheres in concrete mix. In each age of curing concrete, bodies-specimens underwent ultrasound to estimate the homogeneity of concrete with hollow glass microspheres, and testing of compressive strength. The analysis of the results shows that for some formulations, the addition of hollow glass microspheres imparts high mechanical strength to compressive strength above 30MPa at all analyzed cure periods. The workability of the concrete had to be substantially reduced, showing no workability improvement due to the addition of hollow glass microsphere.

Fabrication and mechanical properties of a novel epoxy-hollow glass microsphere composite

2017 ◽  
Vol 52 (12) ◽  
pp. 1627-1632 ◽  
Author(s):  
Xin Liu ◽  
Guohui Wang ◽  
Jiahua Pei ◽  
Zhi Wang ◽  
Zhanjun Wu
Keyword(s):  
Epoxy Resin ◽  
Compression Strength ◽  
Ammonium Bicarbonate ◽  
Glass Microsphere ◽  
Resin Matrix ◽  
Hollow Glass Microsphere ◽  
Foaming Agent ◽  
Hollow Glass ◽  
Modified Epoxy

According to the demand of deep-sea buoyancy material with high compression strength and low density, a novel epoxy-hollow glass microsphere composite was manufactured and characterized. Firstly, the epoxy resin is modified by chemical modification methods using poly(methyltriethoxysilane) to improve the toughness of epoxy resin. Then, the ammonium bicarbonate is used as the foaming agent to add into the epoxy resin to produce the bubbles. After mixing with a small amount of hollow glass microsphere, the modified epoxy-hollow glass microsphere composite with foams is fabricated. IR spectrum indicates that the silicone has been successfully grafted on the epoxy resin chain, which benefits the toughness of the resin. It can be found that a lot of smaller bubbles exist on the surface of hollow glass microsphere by SEM, which further reduces the density of the modified epoxy-hollow glass microsphere composite. The compression strength has been significantly improved since the bubbles on the surface of glass beads play the role of a buffer balloon and there are few air bubbles in the resin matrix. The coefficient of water absorption for the modified epoxy-hollow glass microsphere composite also increased. The flexural strength of the modified epoxy-hollow glass microsphere composite was slightly reduced at the same time. The results here confirm a promising method for buoyancy materials to promote the compression strength and reduce the density.

Effects of Diluent on Mechanical Properties of Hollow Glass Microsphere Reinforced Epoxy Resin Composite

2016 ◽  
Vol 680 ◽  
pp. 525-528
Author(s):  
Hai Tao Geng ◽  
Jia Chen Liu ◽  
Sue Ren
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Hollow Glass Microsphere ◽  
Hollow Glass Microspheres ◽  
Hollow Glass ◽  
Specific Strength ◽  
High Specific Strength ◽  
Epoxy Resin Composite

In order to improve the mechanical properties of hollow glass microspheres (HGMs) reinforced epoxy resin composite, diluent was added in the system of epoxy resin. The results revealed that more HGMs can be filled in the epoxy resin when appropriate amount diluent was added in the system, thus composite with relative low bulk density 0.70g/cm3 and high compressive strength 71.85MPa was obtained. It was due to that the diluent reduce the viscosity of the epoxy resin, which ensures uniform wetting of the fillers and enables more HGMs to be filled in resin. Besides, addition of diluent improved the adhesive strength between the epoxy resin and HGMs, making the composite having a relative high specific strength and can be used in weight sensitive filed.

Acoustic and dielectric properties of epoxy resin/hollow glass microsphere composite acoustic materials

2019 ◽  
Vol 135 ◽  
pp. 109105 ◽  
Author(s):  
Guangpeng Gao ◽  
Yan Hu ◽  
Hongyu Jia ◽  
Peng Liu ◽  
Peng Du ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Epoxy Resin ◽  
Glass Microsphere ◽  
Hollow Glass Microsphere ◽  
Hollow Glass

Effect of titanium doping on the compositional homogeneity of hollow glass microsphere

2017 ◽  
Vol 458 ◽  
pp. 52-60 ◽  
Author(s):  
Fang Li ◽  
Jing Li ◽  
Jianhong Feng ◽  
Zhanwen Zhang ◽  
Meifang Liu ◽  
...  
Keyword(s):  
Glass Microsphere ◽  
Hollow Glass Microsphere ◽  
Hollow Glass ◽  
Titanium Doping ◽  
Compositional Homogeneity
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