scholarly journals Enhanced Thermal Insulation of the Hollow Glass Microsphere/Glass Fiber Fabric Textile Composite Material

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 505
Author(s):  
Jintao Sun ◽  
Fei Cai ◽  
Dongzhi Tao ◽  
Qingqing Ni ◽  
Yaqin Fu
Keyword(s):  
Thermal Conductivity ◽  
Glass Fiber ◽  
Thermal Insulation ◽  
Thermal Constant ◽  
Hollow Glass Microsphere ◽  
Glass Microspheres ◽  
Textile Composite ◽  
Hollow Glass Microspheres ◽  
Hollow Glass ◽  
Insulation Performance

Glass fiber fabrics/hollow glass microspheres (HGM)–waterborne polyurethane (WPU) textile composites were prepared using glass fiber, WPU, and HGM as skeleton material, binder, and insulation filler, respectively, to study the effect of HGM on the thermal insulation performance of glass fiber fabrics. Scanning electron microscopy, Instron 3367 tensile test instrument, thermal constant analysis, and infrared thermal imaging were used to determine the cross-sectional morphology, mechanical property, thermal conductivity, and thermal insulation property, respectively, of the developed materials. The results show that the addition of HGM mixed in WPU significantly enhanced thermal insulation performance of the textile composite with the reduction of thermal conductivity of 45.2% when the volume ratio of HGM to WPU is 0.8 compared with that of material without HGM. The composite can achieve the thermal insulation effect with a temperature difference of 17.74 °C at the temperature field of 70 °C. Meanwhile, the tensile strength of the composite is improved from 14.16 to 22.14 MPa. With these results, it is confirmed that designing hollow glass microspheres (HGM) is an effective way to develop and enhance the high performance of insulation materials with an obvious lightweight of the bulk density reaching about 50%.

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.

The Preparation of Fluorocarbon Thermal Insulation Coating with Different Fillers

2015 ◽  
Vol 1101 ◽  
pp. 36-39 ◽  
Author(s):  
Xiu Fang Ye ◽  
Dong Chu Chen ◽  
Meng Lei Chang ◽  
Qi Hua Liang ◽  
Qi Peng Lu
Keyword(s):  
Thermal Insulation ◽  
Tin Oxide ◽  
Polyvinylidene Fluoride ◽  
Hollow Glass Microsphere ◽  
Test Results ◽  
Hollow Glass ◽  
Insulation Coating ◽  
Insulation Performance ◽  
Functional Fillers ◽  
Closed Pore

According to the mechanism of thermal insulation, closed pore perlite, hollow glass microsphere and nanoantimony tin oxide (ATO) powder three different kinds of functional fillers were adopted respectively to prepare obstructive, reflective and radiative thermal insulation coating base on polyvinylidene fluoride emulsion, and how the category and content of functional fillers effect the thermal insulation performance of the fluorocarbon thermal insulation coating (FTIC) was investigate. The test results showed that, all the three functional fillers has an significant effect on the thermal insulation performance of FTIC.

Light-Weight Masonry Mortarswith Hollow Glass Microspheres for Winter Conditions

2013 ◽  
Vol 467 ◽  
pp. 247-252 ◽  
Author(s):  
Semenov Vyacheslav ◽  
Oreshkin Dmitriy ◽  
Rozovskaya Tamara
Keyword(s):  
Thermal Conductivity ◽  
Building Materials ◽  
Thermal Protection ◽  
Average Density ◽  
Water Retention Capacity ◽  
Light Weight ◽  
Glass Microspheres ◽  
Hollow Glass Microspheres ◽  
Hollow Glass ◽  
Coefficient Of Thermal Conductivity

In the paper the research results of light-weight masonry mortars with hollow glass microspheres (HGMS) and antifreeze admixtures (AFA) for masonry walling of the efficient small items at the low temperatures are given. One has chosen the antifreeze admixtures for the mortars and their rate has been justified. The main properties of the masonry mortars with HGMS and the antifreeze admixtures have been determined. The standard research methods are used. Main attention was paid to the analysis of strength of the mortar with HGMS and the antifreeze admixtures formed at the positive and negative temperatures. The optimal mixtures for the temperature down to 10 °C were developed. A priority direction of development of construction science currently is energy saving and the improvement of energy efficiency of buildings and structures. A part of the solution to this problem is the development of efficient building materials and fencing structures. The use of multi-layer fencing structures is known to lead to a decrease in the coefficient of their thermal uniformity [. In this regard, the most promising is the development of single-wall exterior fencing structures, which answer the requirements of the standards for thermal protection. However, single-wall fencing structures answering the requirements for thermal protection must have an average density value not greater than 500 kg/m3. The materials from cellular concrete, polystyrene concrete, foam ceramics concrete and others satisfy the aforesaid requirements. The monolith unity of similar structures is provided through the use of mortars on the basis of mineral, mineral-and-polymer and polymer binders [2-. Such mortars with high average density and a high coefficient of thermal conductivity are the bridges of cold in the construction; they do not provide the thermal homogeneity of the fencing structure and reduce its thermal resistance. A solution to this problem is the use of light-weight masonry mortars (warm mortars). Such mortars with traditional light-weight fillers (e.g. expanded perlite and vermiculite mortar sands) have an increased water requirement, and, as a consequence, the extremely low strength value. Recently, hollow glass (HGMS) or ceramics (CMS) microspheres are used as light-weight fillers for masonry mortars [. Thus, in [ the scientific principles of the use of such compositions with HGMS have been developed. The masonry mortar has been obtained with the following properties: average density of dried mortar is 450 kg/m3 with a coefficient of thermal conductivity equal to 0.17 W/m·°C and a compressive strength equal to 3.2 MPa at the age of 28 days, water-retention capacity over 90% and with optimal technological and rheological characteristics [.

Controlled TiO2 coating on hollow glass microspheres and their reflective thermal insulation properties

Particuology ◽  
2020 ◽  
Vol 49 ◽  
pp. 33-39 ◽  
Author(s):  
Jie Long ◽  
Chongwen Jiang ◽  
Jundong Zhu ◽  
Quzhi Song ◽  
Jiang Hu
Keyword(s):  
Thermal Insulation ◽  
Tio2 Coating ◽  
Glass Microspheres ◽  
Hollow Glass Microspheres ◽  
Hollow Glass
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