Experimental hear transfer coefficients are reponed for a tern ary refri!!:eranr blend compo;,.cl of ~u··~ HCFC-!2~ .. l6'~ HC f( ·:2:2. and :2~'1 HFC ·l.52a. Th~> blend is a possible substnnte for C. f('.1~ in 1·apor compression refrkerarion cyd~s. Two-phas e hear transfer coefficrenr< were determined for the pure blend and CFC'-12. The experiments were conducted over a rna;; flux ran~e of l~....

BACKGROUND/AIMS High viscosity silicone oils are used as tamponade agents to increase the resistance to emulsification; however, this makes the oils more difficult to inject. Increasing the extensional viscosity is one way to reduce emulsification. This study aimed to evaluate how silicone oils with increased extensional viscosity behave in terms of their ease of injection. METHODS The shear ...

The effects of blend ratio and drug loading content of poly(D,L-lactide) (PDLL)/stearic acid blends on microparticle characteristics and drug release behaviors were evaluated. The blend microparticles were prepared by an oil-in-water emulsion solvent evaporation method for drug delivery of a poorly water-soluble model drug, indomethacin. The microparticles were characterized using a combination...

The objective of the present investigation was to study the effect of critical formulation parameters affecting release of isoxsuprine hydrochloride from matrix tablets using combination of polyethylene oxide (PEO) and dicalcium phosphate (DCP). The powder blend consisting of drug and excipients was analyzed for angle of repose, Carr’s index and Hausner’s ratio. The tablets were prepared by dir...

Abstract Aiming to further plastics recycling via rotational moulding processing, blends of virgin and recycled polyethylene sourced from post-consumer were developed. Three different kinds high density – bottles, pipes mixed household waste compounded with medium in an extruder. The ideal amount recyclate was chosen based upon the impact resistance contents (25, 50 75%) plastic 50/50 blend fou...

High density polyethylene (HDPE) / ultra high molecular weight (UHMWPE) blend is expected as an all-polyolefin recycle material that can achieve both mechanical properties and a continuous melt-mixing process. In order to improve the of polymer blends, optimal mixing required good dispersibility low degradation. this study, effect conditions on dispersion degradation behavior HDPE/UHMWPE blends...

Blending Nomex® with cotton improves its affordability and serviceability. Because cotton is a highly flammable fiber, Nomex®/cotton blend fabrics containing more than 20% cotton require flame-retardant treatment. In this research, combination of a hydroxyl functional organophosphorus oligmer (HFPO) and 1,2,3,4-butanetetracarboxylic acid (BTCA) was used for flame retardant finishing of the 65/3...

Among the various requirements that high voltage direct current (HVDC) insulation materials need to satisfy, sufficiently low electrical conductivity is one of most important. The leading commercial HVDC material currently an exceptionally clean cross-linked low-density polyethylene (XLPE). Previous studies have reported DC-conductivity (LDPE) can be markedly reduced either by including a fract...

To study the feasibility of using two edible plant oils as diesel substitute a comparative study was made. Oils were exacted from the seeds of soyabean (Glycine Max, Family: Leguminoceae) and sunflower(Helianthus annuus, Family: Asteraceae/Compositeae). Oils were esterified (butyl esters) before blending with pure diesel in the ratio of 10:90, 15:85, 20:80, and 25:75 by volume. Pure diesel was ...