Ignition of pyroxylin and polyvinyl nitrate by a gas-particle flow

1973 ◽  
Vol 7 (1) ◽  
pp. 52-54 ◽  
Author(s):  
U. I. Gol'dshleger ◽  
V. V. Barzykin ◽  
V. I. Rozenband
Keyword(s):  
Particle Flow ◽  
Polyvinyl Nitrate

A Study on Polymer Particle Flow in a Disk Zone of a Screw-Disk Extruder

2014 ◽  
Vol 35 (1) ◽  
pp. 121-135 ◽  
Author(s):  
Tomasz Rydzkowski ◽  
Iwona Michalska-Pożoga
Keyword(s):  
Mechanical Properties ◽  
Computer Simulations ◽  
Particle Motion ◽  
Polymer Melt ◽  
Experimental Tests ◽  
Polymer Particle ◽  
Particle Flow ◽  
Material Particle ◽  
Motion Trajectories ◽  
Stretching Effect

Abstract The paper presents the summary of research on polymer melt particle motion trajectories in a disc zone of a screw-disk extruder. We analysed two models of its structure, different in levels of taken simplifications. The analysis includes computer simulations of material particle flow and results of experimental tests to determine the properties of the resultant extrudate. Analysis of the results shows that the motion of melt in the disk zone of a screw-disk extruder is a superposition of pressure and dragged streams. The observed trajectories of polymer particles and relations of mechanical properties and elongation of the molecular chain proved the presence of a stretching effect on polymer molecular chains.

ECOLOGICAL AND TOXICOLOGICAL ASSESSMENT OF HAZARD, POSED BY WATER CONTAMINATION OF WATER BODIES WITH POLYVINYL NITRATE

2018 ◽  
pp. 12-19 ◽  
Author(s):  
A. A. Maslennikov ◽  
S. A. Demidova ◽  
A. V. Ryabova
Keyword(s):  
Biochemical Oxygen Demand ◽  
Water Contamination ◽  
Chronic Toxicity ◽  
Negative Impact ◽  
Oxygen Demand ◽  
Water Bodies ◽  
Organoleptic Properties ◽  
Toxicological Assessment ◽  
Threshold Levels ◽  
Polyvinyl Nitrate

Water containing polyvinyl nitrate was experimentally assessed on the basis of organoleptic, general sanitary and toxicological indicators of harmfulness. It was established that that the compound did not change water organoleptic properties but produced a negative impact on viability of saprophytic microflora , nitrification processes and biochemical oxygen demand. Besides, in tests on animals. the substance caused acute, sub-acute and chronic toxicity. Based on those signs of harmfulness, threshold levels of exposure were established. Data obtained were taken into account for substantiation of MAC (Maximum allowable concentration) of polyvinyl nitrate in water bodies.

Studies on Thermal Decomposition Kinetics of Polyvinyl Nitrate

1995 ◽  
Vol 20 (2) ◽  
pp. 91-95 ◽  
Author(s):  
S. C. Mishra ◽  
Jyotsna Pant ◽  
G. C. Pant ◽  
P. K. Dutta ◽  
U. C. Durgapal
Keyword(s):  
Thermal Decomposition ◽  
Decomposition Kinetics ◽  
Thermal Decomposition Kinetics ◽  
Polyvinyl Nitrate ◽  
Kinetics Of

Co-simulating fouling, erosion of gas-particle flow and morphologies predictions around circular tube via parallel CFD–DEM modeling

Fuel ◽  
2021 ◽  
Vol 294 ◽  
pp. 120464
Author(s):  
Yunshan Dong ◽  
Yue Cao ◽  
Fengqi Si ◽  
Peng Wang ◽  
Jianxin Zhou
Keyword(s):  
Circular Tube ◽  
Particle Flow ◽  
Parallel Cfd

Wireless detector for translational and rotational motion of spherical-particle flow

2020 ◽  
Vol 360 ◽  
pp. 882-889 ◽  
Author(s):  
Y.H. Zhu ◽  
H. Yang ◽  
R. Li ◽  
Y.J. Zhang ◽  
Q. Chen ◽  
...  
Keyword(s):  
Spherical Particle ◽  
Rotational Motion ◽  
Particle Flow
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