Improving thermal insulation properties of lightweight epoxy resin matrix composites with millimeter-sized hollow glass microspheres/epoxy hollow spheres

Qiao, Yingjie; Li, Qiuwu; Li, Qi; Yang, Bingjun; Bai, Chengying; Zhang, Lili; Yao, Zhaoding; Wang, Peng; Zheng, Ting; Zhang, Xiaohong; Wang, Xiaodong

doi:10.1016/j.enbuild.2022.112546

Cited by 22 publications

(16 citation statements)

References 48 publications

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“…T 5 and T 10 are the temperatures corresponding to mass loss of 5% and 10%, respectively, and are commonly considered the initial decomposition temperatures of the materials 13 . It was found that the values of T 5 and T 10 increased with the increase of HGM content.…”

Section: Resultsmentioning

confidence: 99%

“…Hollow glass microspheres (HGM) have the advantages of light weight, non-combustible, extremely stable chemical properties and heat resistance, [10][11][12] low thermal conductivity and high compressive strength, 13 and are often used as inorganic fillers. The application of HGM in the modification of polyethylene, polyamide, and silicone resin has been reported.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and heat resistance of hollow glass microbead/silicone rubber composite coating

Yang,

Qin,

2023

J of Applied Polymer Sci

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Hollow glass microbead/silicone rubber composite coatings were prepared to improve the heat‐resistance and mechanical properties of silicone rubber‐based composites, using CE modified SR as the matrix and HGM as the filler. The microscopic morphology and thermal stability of the composites were characterized by scanning electron microscopy (SEM) and thermogravimetric analyzer (TGA), respectively. The results showed that the thermal stability of the composites increases with the increase of filler content. For the composite sample with a HGM mass content of 16.7%, the initial decomposition temperature (T5) is 408°C, which is 84°C higher than that of silicone rubber. The low density and high sphericity of HGM make it easier to uniformly disperse in the polymer matrix. In addition, compared to silica, which is commonly used as an inorganic filler, the lower thermal conductivity of HGM is also beneficial for achieving better thermal shielding effect. It is confirmed that the insufficient thermal stability of the polymer matrix above 400°C can be compensated for by the properly dispersed inorganic fillers. Therefore, the thermal stability of the composite is improved by the synergistic effect of modified heat‐resistant matrix and inorganic filler.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and heat resistance of hollow glass microbead/silicone rubber composite coating

Yang,

Qin,

2023

J of Applied Polymer Sci

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“…The hollow microsphere filling strategy is to add hollow microspheres (inorganic microspheres, organic microspheres) directly to the epoxy resin system, and ERCF can be obtained after curing and molding. Currently, there is an increasing number of studies on the preparation of ERCF using hollow glass microspheres (HGM) and expandable microspheres 20–23 . For example, Olusegun A et al 21 prepared ERCF by adding HGM, and the study showed that the properties of composite foam could be effectively controlled by changing the volume fraction of HGM in the matrix.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, there is an increasing number of studies on the preparation of ERCF using hollow glass microspheres (HGM) and expandable microspheres 20–23 . For example, Olusegun A et al 21 prepared ERCF by adding HGM, and the study showed that the properties of composite foam could be effectively controlled by changing the volume fraction of HGM in the matrix. However, most of the microspheres have volume limits for addition, for example, the maximum filling volume of HGM in the resin matrix is about 60%–70%, which means that the density of the foam is limited, once exceeding this volume ratio, non‐uniform dispersion will be formed in the composite thus reducing the performance of ERCF 24–27 .…”

Section: Introductionmentioning

confidence: 99%

Study on the foaming behavior of density‐controllable epoxy resin composite foam under negative pressure environment

et al. 2023

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The incomplete decomposition of foaming agent and tedious process during the preparation of epoxy resin composite foam (ERCF) will reduce the mechanical properties and lead to more complex production. Therefore, in this study, a new and simple negative pressure foaming method was designed innovatively to prepare ERCF under negative pressure using strong gas adsorption capacity of inorganically modified calcium silicate (MCS) particles as air carriers instead of foaming agent, and the density and expansion ratio of ERCF could be precisely controlled by adjusting the negative pressure value in a vacuum oven. The results showed that the density of ERCF could reach a very low value of 0.056 g/cm3 at 15 wt% MCS content with decreased negative pressure, but the negative pressure decreases would damage the quality of cells. At the same time, it was found that a rapid rise in the viscosity of the epoxy composite material system under negative pressure of −0.080 MPa owing to the increase in MCS content, when the MCS content was higher than 15 wt%, the MCS dispersion was reduced, leading to a decrease in the quality of the cells. In addition, the ERCF products prepared by the negative pressure foaming method in this study could be easily molded and possessed a better compressive strength among epoxy foams of similar density.

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“…Hollow glass microsphere is a kind of new inorganic powder material developed in recent years, with excellent performance such as small particle size, high compressive strength, rich source, inexpensive, insulation, thermal insulation, and insulation, have a good application on paint, insulation materials, fire-fighting materials, glass ceramic and polymer materials [6][7][8][9] . HGB can improve the thermal insulation of the coating and reduce the surface and internal temperature of the composite coated with the coating; it can be used as a reinforcing modifier and stabilizer to improve the strength and thermal stability of polyimide foaming materials; and as a modifier to improve the mechanical properties of thermoplastic resin composites [7][8][9][10][11] . Because of the low density of the hollow sphere structure, HGB can be directly added to the polymer to reduce the density of the composites.…”

Section: Introductionmentioning

confidence: 99%

Effect of hollow glass microsphere on flame retardant and mechanical properties of polyurethane foams

Li,

Wang,

Chen

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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By adding a glass microsphere that was modified by different methods to a polyurethane foam system, a hollow glass microsphere/polyurethane foam composite was prepared. The effect of the modified method, the additive amount of glass microsphere on the burning and mechanical properties of rigid polyurethane foam was studied. The results show that after adding a glass microsphere, the mechanical properties of rigid polyurethane foam were reduced, and the combustion performance was improved. Comparing adding a hollow glass microsphere that modified by adding microcapsules to the coupling agent, the mechanical properties of polyurethane composite foam were declined slowly, and the inflame-retarding effect was also significantly improved. When the additive amount of hollow glass microsphere modified by microcapsules was 6%, the compressive strength and compressive modulus of polyurethane foam were decreased by 13.0% and 4.6% respectively. When the amount of hollow glass microsphere modified by microcapsules was 8%, the level combustion weightlessness speed of polyurethane declined from 0.024g/s to 0.015g/s.

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Improving thermal insulation properties of lightweight epoxy resin matrix composites with millimeter-sized hollow glass microspheres/epoxy hollow spheres

Cited by 22 publications

References 48 publications

Preparation and heat resistance of hollow glass microbead/silicone rubber composite coating

Preparation and heat resistance of hollow glass microbead/silicone rubber composite coating

Study on the foaming behavior of density‐controllable epoxy resin composite foam under negative pressure environment

Effect of hollow glass microsphere on flame retardant and mechanical properties of polyurethane foams

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