Surface modification of TiO 2 particles with 12‐hydroxy stearic acid and the effect of particle size on the mechanical and thermal properties of thermoplastic polyurethane urea elastomers

2020 ◽  
Vol 138 (8) ◽  
pp. 49898
Author(s):  
Shuxiao Wang ◽  
Xiaoyan Wang ◽  
He Huang
2015 ◽  
Vol 12 (1) ◽  
pp. 40-45
Author(s):  
Baghdad Science Journal

This search study the effect of particle size of graphite on the mechanical and thermal properties of epoxy composites, where graphite adopted with particle sizes (45,53,75) ?m, respectively, and the percentages by weight (0,1,3,5,7,9)% for each size of this three particle sizes.Mechanical properties represented by the bending (three-point bending) and through which the conclusion is bending stress and modulus of elasticity, thermal properties were either through thermal conductivity tests.The results showed that the ratio(1%) is the maximum value of bending stress at the three particle size and the (45 ?m) is the maximum.Thermal conductivity result show is the maximum value at ratio (1%) of particle size(53 ?m)


2012 ◽  
Vol 9 (3) ◽  
pp. 450-458
Author(s):  
Baghdad Science Journal

In this study , Iraqi Bentonite clay was used as a filler for polyvinyl chloride polymer. Bentonite clay was prepared as a powder for some certain particle size ,followed by calcinations process at (300,700,900) OC ,then milled and sieved. The selected sizes were D ~75 µm and D ~150. After that polyvinyl Al-Cohool solution prepared and used as a coated layer covered the Bentonite powder before applied as a filler ,followed by drying , milling and sieving for limited recommend sizes. polyvinyl chloride solutions were prepared and adding of modified Bentonite power at certain quantities were followed .Sheet of these variables on the mechanical and thermal properties of the prepared reinforced particular polyvinyl chloride composite Experimentally, it was found that the composite prepared by adding modified Iraqi Bentonite powder , that calcined at 700 oC as a filler have an advantage in heating insulator properties by 30 from that found for PVC as it is ,and the value of stress strength exceed by three times as that for original value.


2020 ◽  
Vol 200 ◽  
pp. 108461 ◽  
Author(s):  
Muhammad Zahid ◽  
Antonio Esaú Del Río Castillo ◽  
Sanjay Balkrishna Thorat ◽  
Jaya Kumar Panda ◽  
Francesco Bonaccorso ◽  
...  

2016 ◽  
Vol 694 ◽  
pp. 34-38
Author(s):  
Zaleha Mustafa ◽  
Zurina Shamsudin ◽  
Radzali Othman ◽  
Nur Fashiha Sapari ◽  
Jariah Mohd Juoi ◽  
...  

Glass-composite materials were prepared from the soda lime silicate (SLS) waste glass; ball clay and charcoal powder were fired to temperature of 850 °C as an effort for recycling waste glass. Various carbon contents, i.e., 1, 5, 10, 20 and 30 wt.% C were used to evaluate the effect of carbon contents on the hardness and thermal properties of glass composites. In addition, five different particles size (d0.5) of 1, 5, 20, 40 and 75 μm were used to observe the influence of particle size on the physical and mechanical properties of the glass composites. Phase analysis studies revealed the presence of quartz (ICDD: 00001-0649, 2θ = 25.6° and 35.6°), cristobalite (ICDD 00004-0379, 2θ = 22.0° and 38.4°) and wollastonite (ICDD 00002-0689, 2θ = 30.1° and 26.9°). The results showed that the optimised properties is at 1 wt.% of carbon content containing average pore size of 10 μm, with lowest porosity percentage of 1.76 %, highest Vickers microhardness of 4.6 GPa and minimum CTE. The percentage of porosity and hardness value also increased with reduction in carbon particle size.


2019 ◽  
Vol 43 (3) ◽  
Author(s):  
S. Khushbu ◽  
Chikkaballpur Krishnappa Sunil ◽  
Duggonahalli Veeresh Chidanand ◽  
Rangarajan Jaganmohan

Sign in / Sign up

Export Citation Format

Share Document