Light weight LDPE composites with surface modified hollow glass microspheres

2018 ◽  
Author(s):  
Giulio Falcone ◽  
Adriano Vignali ◽  
Roberto Utzeri ◽  
Gloria Porta ◽  
Fabio Bertini ◽  
...  
Keyword(s):  
Light Weight ◽  
Glass Microspheres ◽  
Hollow Glass Microspheres ◽  
Hollow Glass ◽  
Ldpe Composites ◽  
Surface Modified

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 [.

scholarly journals Lightweight Poly(ε-Caprolactone) Composites with Surface Modified Hollow Glass Microspheres for Use in Rotational Molding: Thermal, Rheological and Mechanical Properties

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 624 ◽  
Author(s):  
Adriano Vignali ◽  
Salvatore Iannace ◽  
Giulio Falcone ◽  
Roberto Utzeri ◽  
Paola Stagnaro ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Oxidative Degradation ◽  
Crystallization Rate ◽  
Rotational Molding ◽  
Glass Microspheres ◽  
Hollow Glass Microspheres ◽  
Inorganic Particles ◽  
Hollow Glass ◽  
The Matrix ◽  
Surface Modified

In this work, novel composites based on poly(ε-caprolactone) (PCL) were prepared and characterized in terms of morphological, thermal, rheological and mechanical properties. Hollow glass microspheres (HGM), alone or surface modified by treatment with (3-aminopropyl)triethoxysilane (APTES) in order to enhance the compatibility between the inorganic particles and the polymer matrix, were used to obtain lightweight composites with improved properties. The silanization treatment implies a good dispersion of filler particles in the matrix and an enhanced filler–polymer adhesion. The addition of HGM to PCL has relevant implications on the rheological and mechanical properties enhancing the stiffness of the material. Furthermore, the presence of HGM strongly interferes with the crystallization behavior and thermo-oxidative degradation of PCL. The increase of PCL crystallization rate was observed as a function of the HGM amount in the composites. Finally, rotational molding tests demonstrated the possibility of successfully producing manufactured goods in PCL and PCL-based composites on both a laboratory and industrial scale.

scholarly journals Properties of Light-weight Extruded Concrete with Hollow Glass Microspheres

2016 ◽  
Vol 153 ◽  
pp. 638-643 ◽  
Author(s):  
Dmitriy Oreshkin ◽  
Vyacheslav Semenov ◽  
Tamara Rozovskaya
Keyword(s):  
Light Weight ◽  
Glass Microspheres ◽  
Hollow Glass Microspheres ◽  
Hollow Glass

Effect of Hollow Glass Microspheres on the Morphology, Rheology and Crystallinity of Short Bamboo Fiber-Reinforced Hybrid Polypropylene Composite

JOM ◽  
2018 ◽  
Vol 71 (2) ◽  
pp. 548-558 ◽  
Author(s):  
Rupam Gogoi ◽  
Nityanshu Kumar ◽  
Shubham Mireja ◽  
Sham Sundar Ravindranath ◽  
Gaurav Manik ◽  
...  
Keyword(s):  
Bamboo Fiber ◽  
Fiber Reinforced ◽  
Glass Microspheres ◽  
Polypropylene Composite ◽  
Hollow Glass Microspheres ◽  
Hollow Glass
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