Far Infrared Emissivity Characteristics and Evaluation of Different Light Source Irradiate Polyester Knitted Fabric

2011 ◽  
Vol 332-334 ◽  
pp. 246-249
Author(s):  
Chin Yow Lin ◽  
Jian Guo Yan ◽  
Wen Hao Hsing

In this Study, Visible on the Far-infrared Emissivity of Knitted Fabric, its Rate of Change of Far Infrared Radiation Were Observed. in this Study, Light Exposure Time for 20,40,60 Minutes, the Experimental Results, the Longer the Kind of Light Source Distribution Is much Higher Surface Temperature Will Be Relatively Higher Rate of Infrared Radiation, when the Light Source when the Suspension Began Measuring Data, the Light Source, the Far Infrared Radiation Rate of about 0.941 ~ 0.975 when Reached Will Begin to Flatten, after 15 Minutes Returned to its Emission Rate of about 0.937, when the Far-infrared Light Irradiation of Polyester Fabrics through the Far Infrared Radiation Values Are Effectively Increase, so the Light Irradiation Intensity of Far Infrared Radiation Rate of the Subjects Were Characterized by Light and the Length of Time to Improve the Fabric Surface Temperature Change and this Temperature Rise Is the Key to the Experimen

2011 ◽  
Vol 287-290 ◽  
pp. 2717-2720
Author(s):  
Wen Hao Hsing ◽  
Chin Yow Lin ◽  
Ya Lan Hsing

In this study, visible on the far-infrared emissivity of knitted fabric, its rate of change of far infrared radiation were observed. In this study, light exposure time for 20,40,60 minutes, the experimental results, the longer the kind of light source distribution is much higher surface temperature will be relatively higher rate of infrared radiation, when the light source when the suspension began measuring data, the light source, the far infrared radiation rate of about 0.941 ~ 0.975 when reached will begin to flatten, after 15 minutes returned to its emission rate of about 0.937, when the far-infrared light irradiation of polyester fabrics through the far infrared radiation values are effectively increase, so the light irradiation intensity of far infrared radiation rate of the subjects were characterized by light and the length of time to improve the fabric surface temperature change and this temperature rise is the key to the experiment


2015 ◽  
Vol 749 ◽  
pp. 282-285 ◽  
Author(s):  
Ching Wen Lou ◽  
Ya Lan Hsing ◽  
Wen Hao Hsing ◽  
Chien Teng Hsieh ◽  
Jia Horng Lin

In this study the experiment used the two kinds of fibers, respectively are the recycled far-infrared polyethylene terephthalate (RFPET) fibers and the low melting temperature polyethylene terephthalate (LPET) fibers. Needle punching and compare with laminated in different layers, through hot pressing to make the fabric thin, observation and testing , surface observation, air permeability test, stiffness test, and far infrared emissivity test. The study shows the far-infrared radiation rate and will not increase because of the laminate, but is a relationship with a thickness comparison.


2011 ◽  
Vol 287-290 ◽  
pp. 2610-2613
Author(s):  
Wen Hao Hsing ◽  
Wei Jay Yang ◽  
Ya Lan Hsing

In this experiment, use of far infrared filled fabric of instillation of sweat on the man the purpose of detecting artificial sweat on the far-infrared radiation rate of fiber influence and change the fiber type, weight, the proportion of artificial sweat to detect far-infrared radiation rate of thick fabrics change. The results showed that the infrared fiber’s radiation rate of cotton fiber to be higher about 0.07. Far-infrared on a thick layer of fabric at the instillation of 3% weight, 6% of the weight, 9% of the weight of artificial sweat, its far-infrared radiation rate would be the relationship between the rapid decline due to sweat, but with the artificial sweat evaporation, radiation will slow the rate of rise, Another far-infrared fiber samples of 3g weights repeated titration sweat, the far-infrared fiber samples of the far-infrared radiation rate will be increased about 0.005 ~ 0.007


2020 ◽  
Vol 194 ◽  
pp. 05053
Author(s):  
Qi Lu ◽  
Bowen Li ◽  
Huan Zhang

Far infrared materials have been prepared by precipitation method using natural elbaite powder as raw materials, which belongs to tourmaline group. The chemical formula of elbaite is Na(Al, Li)3Al6B3Si6O27(O, OH, F)4. X-ray powder diffraction (XRD) shows that elbaite and alumina in composite material has good crystal form. In addition, XRD results indicate the formation of alumina crystallites show that alumina powder exists as nano-meter particles on the surface of elbaite powder. It can be calculated the particles diameter of Al2O3 is 47.86nm. The maximum infrared radiation rate of tourmaline/alumina composite materials is 0.89 when the ratio of alumina in elbaite powder is 20%. The infrared radiation rate has been increased by 0.03, compared with single elbaite. It shows that the infrared radiation rate of the composite materials is higher than any of a single component. Two reasons are attributed to the improve of the rate of far infrared radiation: alumina powder exists as nano-meter particles and different materials will increase the absorption peak and the vibration intensity in FTIR spectra.


2011 ◽  
Vol 287-290 ◽  
pp. 2664-2668 ◽  
Author(s):  
Jia Horng Lin ◽  
Yu Tien Huang ◽  
Chin Mei Lin ◽  
Yi Chang Yang ◽  
Ching Wen Lou

In recent years, the scientific progress has improved human life quality and changes the concepts of heath and heath care. It has been approved that the bamboo charcoal has various functions, including air cleaning, water purification, deodorization, far infrared radiation rate and anion amount. The bamboo charcoal fiber and bamboo charcoal yarn are applied extensively in the textile industry. In this study, PET fiber was used as warp, and PET fiber, bamboo charcoal nylon fiber and stainless steel fiber employed as weft to weave three groups of warp knitted fabric. The variation of far infrared radiation rate, anion amount concentration, air permeability, water absorption, flexibility of these three groups of fabric were examined. The results indicate that the far infrared radiation rate of these three groups of fabric attained 0.8. The anion amount concentration of bamboo charcoal and bamboo charcoal / stainless steel warp knitted fabrics has reached 490-495. Finally, the air permeability of bamboo charcoal / stainless steel warp knitted fabrics achieved 281 cm3/s/cm2.


2019 ◽  
Vol 8 (2) ◽  
pp. 71-77
Author(s):  
Ku Yeon Lee ◽  
◽  
Hyung H. Lee ◽  
Suk Chan Hahm

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 34
Author(s):  
Akun Liang ◽  
Robin Turnbull ◽  
Enrico Bandiello ◽  
Ibraheem Yousef ◽  
Catalin Popescu ◽  
...  

We report the first high-pressure spectroscopy study on Zn(IO3)2 using synchrotron far-infrared radiation. Spectroscopy was conducted up to pressures of 17 GPa at room temperature. Twenty-five phonons were identified below 600 cm−1 for the initial monoclinic low-pressure polymorph of Zn(IO3)2. The pressure response of the modes with wavenumbers above 150 cm−1 has been characterized, with modes exhibiting non-linear responses and frequency discontinuities that have been proposed to be related to the existence of phase transitions. Analysis of the high-pressure spectra acquired on compression indicates that Zn(IO3)2 undergoes subtle phase transitions around 3 and 8 GPa, followed by a more drastic transition around 13 GPa.


1996 ◽  
Vol 77 (20) ◽  
pp. 4280-4280
Author(s):  
V. L. Gurevich ◽  
V. B. Pevzner ◽  
G. Iafrate

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