Infrared Radiation of Thin Plastic Films

1972 ◽  
Vol 94 (1) ◽  
pp. 41-45 ◽  
Author(s):  
C. L. Tien ◽  
C. K. Chan ◽  
G. R. Cunnington
Keyword(s):  
Infrared Radiation ◽  
Optical Constants ◽  
Metal Substrate ◽  
Radiation Characteristics ◽  
Plastic Films ◽  
Analytical Technique ◽  
Thin Film Analysis ◽  
Normal Emittance ◽  
Thin Plastic ◽  
Film Side

A combined analytical and experimental study is presented for infrared radiation characteristics of thin plastic films with and without a metal substrate. On the basis of the thin-film analysis, a simple analytical technique is developed for determining band-averaged optical constants of thin plastic films from spectral normal transmittance data for two different film thicknesses. Specifically, the band-averaged optical constants of polyethylene terephthalate (Mylar, DuPont Co.) and polyimide (Kapton, DuPont Co.) were obtained from transmittance measurements of films with thicknesses in the range of 0.25 to 3 mil. The spectral normal reflectance and total normal emittance of the film side of singly aluminized films are calculated by use of optical constants; the results compare favorably with measured values.

scholarly journals Failure mechanics and infrared radiation characteristics of soft coal at various moisture contents

2021 ◽  
Vol 12 (1) ◽  
pp. 1370-1384
Author(s):  
Yiju Tang ◽  
Jing Liu ◽  
Tianxuan Hao ◽  
Fan Li ◽  
Lizhen Zhao
Keyword(s):  
Infrared Radiation ◽  
Radiation Characteristics ◽  
Failure Mechanics ◽  
Moisture Contents ◽  
Soft Coal

An experimental study of infrared radiation characteristics of sandstone in dilatancy process

2020 ◽  
Vol 136 ◽  
pp. 104503
Author(s):  
Kewang Cao ◽  
Liqiang Ma ◽  
Dongsheng Zhang ◽  
Xingping Lai ◽  
Zhitao Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Infrared Radiation ◽  
Radiation Characteristics

scholarly journals Sea Water Contamination in the Vicinity of the Italian Minor Islands Caused by Microplastic Pollution

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1108 ◽  
Author(s):  
Giuseppe de Lucia ◽  
Alvise Vianello ◽  
Andrea Camedda ◽  
Danilo Vani ◽  
Paolo Tomassetti ◽  
...  
Keyword(s):  
Water Contamination ◽  
Sea Water ◽  
Ethylene Vinyl Acetate ◽  
Average Density ◽  
Spectroscopy Analysis ◽  
Policy Makers ◽  
Plastic Films ◽  
Thin Plastic ◽  
Abundance And Distribution ◽  
River Mouths

The abundance and distribution of microplastics (MP) were evaluated in six “clean” sites (Italian minor islands) and in two “polluted” areas (near the mouth of two major Italian rivers). Samples of MP, plankton and persistent organic pollutants (POPs) were collected using a manta trawl (MA) and a plankton net (WP2), both lined with a 333 µm mesh net. MP have been confirmed to be ubiquitous since they were found at each site, showing an average density of 0.3 ± 0.04 items/m3 (values ranged from 0.641 to 0.119 ). When comparing the clean sites with the polluted ones, a significantly higher value of MP was found near the river mouths. The most common types of MP were synthetic filaments (50.24%), followed by fragments (30.39%), thin plastic films (16.98%) and spheres (2.39%). Infrared spectroscopy analysis highlighted that the most abundant polymers were polyethylene (PE-26%), polypropylene (PP-11%), polyethylene-terephthalate/polyester (PET/PEST-8%) and ethylene-vinyl-acetate (EVA-5%). Polychlorinated biphenyls and organochlorine pesticides were detected in all the samples with a high variability among sites and depths. This study adds to the existing information on the distribution of contaminants across the Mediterranean Sea, and is useful to policy makers who wish to implement effective measures to reduce MP pollution.

scholarly journals Study on a calculation model of infrared radiation characteristics of rocket engine plume

2021 ◽  
Vol 2125 (1) ◽  
pp. 012006
Author(s):  
Nan Wu ◽  
Chengpo Mu ◽  
Yang He ◽  
Huan Liu ◽  
Taiye Liu
Keyword(s):  
Flow Field ◽  
Infrared Radiation ◽  
Rocket Engine ◽  
Calculation Model ◽  
Characteristic Parameters ◽  
Infrared Band ◽  
Radiation Characteristics ◽  
Mid Infrared ◽  
Fast Calculation ◽  
Plume Flow

Abstract In order to study the infrared radiation (IR) characteristics of rocket engine plume in the mid infrared band, a calculation model for IR transfer of rocket engine plume was built. The flow field data are calculated by software FLUENT. Based on HITRAN database, the IR characteristic parameters are calculated after spectral line correction. The Line of Sight (LoS) is used to solve the radiation characteristics in the plume flow field, and the IR characteristics distribution of the plume in the mid infrared band is obtained, which agree well with the results from open literature. The method has the advantages of simple model, less parameters and fast calculation speed in this paper.

Thermal Effects on Ultrasonic Joining of Thin Plastic Films Using Torsional Vibrations

2008 ◽  
Vol 47 (8) ◽  
pp. 6431-6436 ◽  
Author(s):  
Kazunari Adachi ◽  
Tsuyoshi Takahashi ◽  
Kenichi Kamehashi ◽  
Kazumi Watanabe ◽  
Kenta Uchiyama ◽  
...  
Keyword(s):  
Thermal Effects ◽  
Torsional Vibrations ◽  
Plastic Films ◽  
Thin Plastic

The environmental degradation of thin plastic films

1993 ◽  
Vol 31 (3) ◽  
pp. 179-198 ◽  
Author(s):  
Philip J. Whitney ◽  
Clare H. Swaffield ◽  
Andrew J. Graffham
Keyword(s):  
Environmental Degradation ◽  
Plastic Films ◽  
Thin Plastic
Sign in / Sign up

Export Citation Format

Share Document