Characterization of hollow glass sphere reinforced epoxy composites: Dynamical mechanical analysis and morphology

2017 ◽  
Vol 59 (3) ◽  
pp. 239-243 ◽  
Author(s):  
Mihrigül Altan ◽  
Yusuf Kahraman ◽  
Beril Gümüş
Keyword(s):  
Mechanical Analysis ◽  
Glass Sphere ◽  
Epoxy Composites ◽  
Dynamical Mechanical Analysis ◽  
Hollow Glass ◽  
Hollow Glass Sphere

Hollow-Glass Sphere Application in Drilling Fluids: Case Study

2015 ◽  
Author(s):  
Arminder Minhas ◽  
Brandon Friess ◽  
Farid Shirkavand ◽  
Barry Hucik ◽  
Teresa Pena-Bastidas ◽  
...  
Keyword(s):  
Glass Sphere ◽  
Drilling Fluids ◽  
Hollow Glass ◽  
Hollow Glass Sphere

Field Application of LightWeight Hollow Glass Sphere Drilling Fluid

1997 ◽  
Author(s):  
George H. Medley ◽  
Jerry E. Haston ◽  
Richard L. Montgomery ◽  
I. Dylan Martindale ◽  
John R. Duda
Keyword(s):  
Drilling Fluid ◽  
Field Application ◽  
Glass Sphere ◽  
Hollow Glass ◽  
Hollow Glass Sphere

scholarly journals Synthesis and characterization of biodegradable aliphatic copolyesters with hydrophilic soft segments

2004 ◽  
Vol 69 (12) ◽  
pp. 1013-1028 ◽  
Author(s):  
Danijela Jovanovic ◽  
Marija Nikolic ◽  
Jasna Djonlagic
Keyword(s):  
Mechanical Analysis ◽  
Transesterification Reaction ◽  
Degree Of Crystallinity ◽  
Solution Viscosity ◽  
Butylene Succinate ◽  
Dynamical Mechanical Analysis ◽  
Soft Segments ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

segmented poly(ester-ether)s based on poly(butylene succinate) and two different types of polyethers were investigated. The poly(ester-ether)s were synthesized by transesterification reaction of dimethyl succinate 1,4-butanediol and poly(ethylene oxide) (PEO, Mn = 1000 g/mol) in the first series, and poly(tetramethylene oxide) (PTMO,Mn = 1000 g/mol) in the second. The mass fraction of soft segments was varied between 10 and 50 mass. %. The effect of the introduction of two different polyether soft segments on the structure, thermal and rheological properties were investigated. The composition of the poly(ester-ether)s, determined from their 1H-NMR spectra showed that incorporation of soft polyether segments was successfully performed by the transesterification reaction in bulk. The molecular weight was estimated from solution viscosity measurements and complex dynamic viscosities. The thermal properties investigated by DSC indicated that the presence of soft segments lowers the melting and crystallization temperature of the hard phase, as well as the degree of crystallinity. Dynamical mechanical analysis was used to investigate the influence of composition on the rheological behavior of the segmented poly(ester-ether)s. The results obtained from an enzymatic degradation test performed on some of the synthesized polymers showed that the biodegradability is enhanced with increasing hydrophilicity.

Processing of Hollow Glass Sphere/Polyester/Glass Fiber Sheet Molding Composites

2019 ◽  
Author(s):  
Arielle Berman ◽  
Edward DiLoreto ◽  
Yong Wu ◽  
Troy Ista ◽  
Andrew D’Souza ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Glass Sphere ◽  
Hollow Glass ◽  
Fiber Sheet ◽  
Hollow Glass Sphere

Characterization of Mg AZ31 Alloy ECASD Processed Using Dynamical Mechanical Analysis (DMA)

2015 ◽  
Vol 1766 ◽  
pp. 109-114
Author(s):  
Daniel Peláez ◽  
Adriana Restrepo-Osorio ◽  
Emigdio Mendoza ◽  
Cesar Isaza ◽  
Patricia Fernandez-Morales
Keyword(s):  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Room Temperature ◽  
Az31 Alloy ◽  
Mechanical Analysis ◽  
Metal Plate ◽  
Dynamical Mechanical Analysis ◽  
Dimensional Changes ◽  
Severe Plastic Deformation Technique

ABSTRACTIn the present work was used Dynamical Mechanical Analysis (DMA) to study the magnesium alloy Mg AZ31-B, in plate form with a thickness of 2.5 mm. The plates were processed using Equal Channel Angular Sheet Drawing (ECASD), which is a severe plastic deformation technique, which allows imposing strain without dimensional changes to a metal plate, at room temperature with an angle of 135°. The obtained results show dependence between the storage modulus (M’), temperature and frequency used on the tests. The greater M’ values were obtained at the lower temperatures and at the higher frequency used. However, at lower frequencies M’ response is not affected by the used frequencies. At the higher temperatures there is an M’ reduction, which promotes the material deformation.

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