1,369 research outputs found
Effect of Untreated Wollastonite on Mechanical Properties of Nylon6
Nylon-6/untreated Wollastonite composites were prepared with different loading of 15, 25 and 35 % w/w of Wollastonite (acicular ratio-15-20%) by co-rotating twin screw extruder. Mechanical properties of injection molded specimens of Nylon-6/ untreated Wollastonite composites were evaluated. Mechanical properties like flexural strength, flexural modulus, tensile strength, impact strength, hardness and abrasion resistance were evaluated for these composites. Wollastonite improves flexural modulus, flexural strength, hardness and abrasion resistance of the composites. The results suggest application of Nylon-6/Wollastonite in automotive parts, electric motors, gears, power tool housings etc. Due to fibrous nature, Wollastonite replacing short milled glass fibers for both thermoplastics & thermo-sets and short-fiber Asbestos which are hazardous to human health as well as difficult to handle.
DOI: 10.17762/ijritcc2321-8169.15077
Evaluation of Thermal and Morphological Properties of Nylon 6/Cenosphere Composites
PA6/CS composites were prepared with different loading (10, 20 and 30 % w/w) of CS (5-100 µm) by co-rotating twin screw extruder. Injection molded specimens were prepared to evaluate thermal properties of developed composites. Thermal properties like Heat Deflection Temperature (HDT), Differential Scanning Calorimetry (DSC) and Thermo Gravimetric Analysis (TGA) were evaluated for these composites. Morphological properties were also studied for these composites. Addition of Cenosphere improves HDT of Nylon 6 besides reducing cost of the final product. SEM of fractured surface revealed the evenly distribution of Cenosphere in the matrix. As Cenospheres are generated from fly ash in thermal power plant, they are environment friendly, eco-friendly and help to preserve natural virgin filler.
DOI: 10.17762/ijritcc2321-8169.15076
Study on Effect of Wollastonite on the Thermal Properties of Nylon-6 and Morphological Analysis
Nylon-6/Wollastonite composites were prepared with different concentration of 15, 25 and 35 % w/w of Wollastonite (acicular ratio-15-20%) by co-rotating twin screw extruder. Heat Deflection Temperature (HDT) of injection molded specimens of Nylon-6/ Wollastonite composites was evaluated; Differential Scanning Calorimetric (DSC) and Thermo Gravimetric Analysis (TGA) were studied for these composites. Scanning Electron Microscope (SEM) of tensile fractured sample was revealed uniformity of filler distribution throughout the matrix of Nylon-6/Wollastonite. Wollastonite improves Heat Deflection Temperature (HDT) of the Nylon-6/Wollastonite composites with reduction of product cost. The results suggest application of Nylon-6/Wollastonite in automotive parts, electric motors, gears, power tool housings etc. Due to fibrous nature, Wollastonite replacing short milled glass fibers for both thermoplastics & thermo-sets and short-fiber Asbestos which are hazardous to human health as well as difficult to handle.
DOI: 10.17762/ijritcc2321-8169.15076
Effect of untreated Cenosphere on Mechanical properties of Nylon-6
Untreated CS-PA 6 composites were prepared with different loading (10, 20 and 30 % w/w) of CS (5-100 µm) by co-rotating twin screw extruder. Injection molded specimens were prepared to evaluate mechanical properties of developed composites. Mechanical properties like Flexural strength, Flexural modulus, Tensile strength, Impact strength, and Hardness and Abrasion resistance were evaluated for these composites. Addition of Cenosphere improves flexural modulus, flexural strength, and hardness and abrasion resistance besides reducing cost of the final product. As Cenospheres are generated from fly ash in thermal power plant, they are environment friendly, eco-friendly and help to preserve natural virgin filler. The results suggest application of Cenosphere filled Nylon-6 in light weight automotive parts instead of glass filled Nylon-6.
DOI: 10.17762/ijritcc2321-8169.15076
Modeling of Wedge-Shaped Anisotropic Piezocomposite Transducer for Guided Wave-based Structural Health Monitoring
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/77008/1/AIAA-2007-1723-966.pd
Anomalous spin dynamics in charge ordered, 'two-electron' doped manganite Ca_0.9Ce_0.1MnO_3 : consequence of a spin-liquid phase?
The 'two-electron' doped rare earth mangnites Ca_1-x Ce_x MnO_3 (x = 0.1,0.2)
are probed using resistivity, ac susceptibility and electron paramagnetic
resonance (EPR) measurements across their respective charge ordering (CO)
temperatures T_CO = 173 K and 250 K. The EPR 'g' factor and intensity as well
as the transport and magnetic behaviours of the two compositions are
qualitatively similar and are as expected for CO systems. However, the EPR
linewidth, reflective of the spin dynamics, for x = 0.1, shows a strongly
anomalous temperature dependence, decreasing with decreasing temperature below
T_CO in contrast with the sample with x = 0.2 and other CO systems. Keeping in
view the evidence for magnetic frustration in the system, we propose that the
anomalous temperature dependence of the linewidth is the signature of the
occurrence of a disorder driven spin liquid phase, present along with charge
ordering.Comment: 19 pages including 4 figure
On incomplete exponential \;_{r}R_{s}(P,Q,z) matrix function
The recurrence matrix relations, differentiation formulas, and analytical and
fractional integral properties of incomplete gamma matrix functions and are all covered in this article. The generalized
incomplete exponential matrix functions with their integral representations
functions have been examined, along with some relevant characteristics of these
functions such as integral representations functions . Additionally, the
infinite summation relations and formulas for two sequences are shown, along
with the generalized incomplete exponential matrix functions with the integral
representation, addition formula for addition of two arguments, multiplication
formula for multiplication of two arguments, and recurrence matrix relation
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