Elaboration, thermogravimetric analysis, and fire testing of a new type of wood‐sawdust composite materials based on epoxy–amine polymers modified with copper( II ) hexafluorosilicate

2021 ◽  
Author(s):  
Victoria Kochubei ◽  
Borys Mykhalichko ◽  
Helen Lavrenyuk
Keyword(s):  
Composite Materials ◽  
Thermogravimetric Analysis ◽  
Fire Testing ◽  
Wood Sawdust ◽  
Epoxy Amine ◽  
New Type

scholarly journals A Review on a Straight Bevel Gear Made from Composite

2016 ◽  
Vol 5 (3) ◽  
pp. 73 ◽  
Author(s):  
Haidar F. AL-Qrimli ◽  
Karam S. Khalid ◽  
Ahmed M. Abdelrhman ◽  
Roaad K. Mohammed A ◽  
Husam M. Hadi
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Power Transmission ◽  
Bevel Gear ◽  
Robotic Arm ◽  
Straight Bevel Gear ◽  
Different Types ◽  
New Type ◽  
New Form ◽  
Material Composite

The purpose of this work is to present a clear fundamental thought for designing and investigating straight bevel gear made of composite material. Composite materials have the advantage of being light, producing low noises, and extra loading capacities. Due to these properties, it is highly preferable over conventional materials. A comparison between different types of material used in a gear structure will be shown. The outcome shows that a new form of cheap material may be useful for designing a new type of lighter and stiffer gear, designed for robotic arm applications or any power transmission application.

The Developments of the Studies of New Type Zeolite Molecular Sieve Host-nanoguest Composite Materials

1998 ◽  
Vol 14 (12) ◽  
pp. 1116-1122
Author(s):  
Qiu Shi-Lun ◽  
◽  
Zhai Qing-Zhou ◽  
Xiao Feng-Shou ◽  
Zhang Zong-Tao ◽  
...  
Keyword(s):  
Composite Materials ◽  
Molecular Sieve ◽  
New Type ◽  
Type Zeolite

Potential of Upgrading Domestic Biomass into a Higher Energy Density via Torrefaction Process

2013 ◽  
Vol 795 ◽  
pp. 620-625
Author(s):  
A.M. Iqbal ◽  
Z.A. Zainal ◽  
A.M. Mustafa Al Bakri ◽  
M. Mazlan ◽  
S.N. Soid ◽  
...  
Keyword(s):  
Thermogravimetric Analysis ◽  
Energy Density ◽  
Thermal Treatment ◽  
Heating Temperature ◽  
Energy Output ◽  
Light Weight ◽  
Fixed Carbon ◽  
Heating Value ◽  
Wood Sawdust ◽  
Treatment Step

Torrefaction is a thermal treatment step in a relatively low temperature range of 240-300°C, which aims to produce a higher energy biomass in terms of low heating value (LHV) and light weight properties. Biomass in wood (sawdust) was used in this work due availability in tropical climate and relatively cheap. LHV of torrified sawdust was found to be increases as heating temperature increased, in absence of oxygen content. This is enhanced by way of decomposing the hemicelluloses fraction. The thermogravimetric analysis (TGA) records the changes occurred in fixed carbon, volatile and ash in which it was recorded that an increase of fixed carbon and ash is seen in the increases of temperature and a decrease of volatile is vice versa. The study provides a clearer picture of the result obtained from TGA and HHV which improvise the biomass into higher energy output.

Electron microscopy study of new composite materials based on electrospun carbon nanofibers

CrystEngComm ◽  
2017 ◽  
Vol 19 (27) ◽  
pp. 3792-3800 ◽  
Author(s):  
V. G. Zhigalina ◽  
O. M. Zhigalina ◽  
I. I. Ponomarev ◽  
K. M. Skupov ◽  
D. Yu. Razorenov ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Temperature ◽  
Composite Materials ◽  
Carbon Nanofiber ◽  
Polymer Electrolyte Membrane ◽  
Microscopy Study ◽  
Gas Diffusion ◽  
Electron Microscopy Study ◽  
Electrolyte Membrane ◽  
New Type

To create a new type of catalytic gas diffusion layer for a high-temperature hydrogen/air polymer-electrolyte membrane fuel cell (HT-PEMFC), a new electrospun carbon nanofiber (CNF)-based platinized nanocomposite was formed.

scholarly journals Synthesis and Kinetic Study of the Urea Controlled Release Composite Material: Sodium Lignosulfonate from Isolation of Wood Sawdust-Sodium Alginate-Tapioca

2018 ◽  
Vol 18 (1) ◽  
pp. 108
Author(s):  
Arif Cahyo Imawan ◽  
Yehezkiel Steven Kurniawan ◽  
Muhammad Fernadi Lukman ◽  
Jumina Jumina ◽  
Triyono Triyono ◽  
...  
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Controlled Release ◽  
Kinetic Study ◽  
Control Release ◽  
Diffusivity Coefficient ◽  
Sodium Lignosulfonate ◽  
Spherical Form ◽  
Wood Sawdust ◽  
State Diffusion

A synthesis and kinetic study of the urea controlled-release composite material based on isolated Na-lignosulfonate, Na-alginate and tapioca was carried out. This experiment’s aims were to isolate Na-lignosulfonate from wood sawdust and to applicate this isolated Na-lignosulfonate, along with tapioca and Na-alginate as urea control release composite material. A kinetic study of urea released from the composite materials was also conducted. Na-lignosulfonate was isolated by Kraft lignin method to give a brown solid yield of 16.92% and was characterized by FT-IR spectrophotometer and SEM-EDX. The composite materials were synthesized by blending urea as the active compound with composite material as the carrier compound. Three types of material were prepared: complete material (A), low-concentration Na-lignosulfonate material (B) and material without tapioca (C). The composite material had a spherical form with 0.79 mm radius and 2.16 mm swollen radius. Urea content inside material was 40.425 mg urea/g material. The urea diffusivity coefficient for material A, B, and C were 7.27 x 10–6; 15.50 x 10–6 and 0.94 x 10–6 m2 h–1, respectively. Modelling analysis showed the experiment obeyed around only 15% of the Korsmeyer–Peppas model, but there was good correlation (80%) with the unsteady-state diffusion model.

scholarly journals Amino-diol borate complexation for controlling transport phenomena of penetrant molecules into polymeric matrices

2019 ◽  
Vol 10 (36) ◽  
pp. 4920-4929 ◽  
Author(s):  
Matthew G. Unthank ◽  
Colin Cameron ◽  
Anthony Wright ◽  
David Hughes ◽  
M. Ashraf Alam ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Transport Phenomena ◽  
Polymer Networks ◽  
Polymeric Matrices ◽  
Epoxy Amine ◽  
New Type ◽  
Borate Complexation ◽  
Solvent Molecules

A new type of epoxy-amine-borate (EAB) hybrid material is reported for control of penetrant solvent molecules into cross-linked polymer networks.

Effects of Different Structure Rotors on Mixing Process and Quality of Short Fiber-Rubber Composite Material

2009 ◽  
Vol 87-88 ◽  
pp. 277-281
Author(s):  
Chuan Sheng Wang ◽  
De Wei Zhang ◽  
Hui Guang Bian
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Short Fiber ◽  
Experimental Results ◽  
Mixing Process ◽  
Mixing Performance ◽  
Rubber Composite ◽  
New Type ◽  
Better Than

The structure of rotors is an important factor, which impacts the quality of the mixed rubber. For the short fiber-rubber composite material, the structure of the rotors is most important. Through the experiments study, the mixing performances of four-wing synchronous rotor, six-wing synchronous rotor and new type of six-wing synchronous varying clearance rotor have been studied. The experimental results indicated that the mixing performance of the new type rotor is much better than the four-wing and six-wing synchronous rotor for the mixing of short fiber-rubber composite materials.

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