Influence of Fluorinated Illite on Thermal, Antibiotic and Far-infrared Emission Properties of Polypropylene Non-woven Fibers

PET/germanium composite fibers that with negative air ion release and far infrared emission properties were prepared by adding germanium particles to polyethylene terephthalate (PET) and melt-spinning. The morphology, effect of the germanium content on the negative air ion release, far infrared emission, thermal and mechanical properties of the fibers were investigated. The germanium particles uniformly disperse in the PET fibers when the concentration ranged from 1% to 3 percent. The value of the negative air ions released by the PET/germanium composite fibers increased with increasing content of germanium and reached 1470 ions/cm-3 at 3% germanium concentration. The highest far infrared normal emissivity (0.9) was obtained at 3% germanium concentration. The TG and DSC analysis revealed that the two heat histories used had little effect on the PET. The crystallinity of the composite fibers decreased with increasing germanium content. Water fastness testing showed that the PET/germanium composite fibers had excellent and durable negative air ion release and far infrared emission properties. The breaking strength of the fibers decreased with increasing of the germanium content.

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Preparation and Far Infrared Emission Properties of Natural Sepiolite Nanofibers

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2010.2116 ◽

2010 ◽

Vol 10 (3) ◽

pp. 2017-2022 ◽

Cited By ~ 20

Author(s):

Fei Wang ◽

Jinsheng Liang ◽

Qingguo Tang ◽

Liwei Li ◽

Lijun Han

Keyword(s):

Far Infrared ◽

Infrared Emission ◽

Emission Properties ◽

Sepiolite Nanofibers

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Effect of the Dosage of Tourmaline on Far Infrared Emission Properties of Tourmaline/Glass Composite Materials

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2016.11844 ◽

2016 ◽

Vol 16 (4) ◽

pp. 3899-3903 ◽

Cited By ~ 4

Author(s):

Hongchen Zhang ◽

Junping Meng ◽

Jinsheng Liang ◽

Jie Liu ◽

Zhaoyang Zeng

Keyword(s):

Particle Size ◽

Composite Materials ◽

Raw Materials ◽

Far Infrared ◽

Infrared Emission ◽

Infrared Emissivity ◽

Glass Composite ◽

Emission Properties ◽

The Fourier Transform ◽

Glass Powders

Tourmaline/glass composite materials were prepared by sintering at 600 °C using micron-size tourmaline mineral and glass powders as raw materials. The glass has lower melting point than the transition temperature of tourmaline. The Fourier transform infrared spectroscopy showed that the far infrared emissivity of composite was significantly higher than that of either tourmaline or glass powders. A highest far infrared emissivity of 0.925 was obtained when the dosage of tourmaline was 10 wt%. The effects of the amount of tourmaline on the far infrared emission properties of composite was also systematically studied by field emission scanning electron microscope and X-ray diffraction. The tourmaline phase was observed in the composite, showing a particle size of about 70 nm. This meant that the tourmaline particles showed nanocrystallization. They distributed homogenous in the glass matrix when the dosage of tourmaline was not more than 20 wt%. Two reasons were attributed to the improved far infrared emission properties of composite: the particle size of tourmaline-doped was nanocrystallized and the oxidation of Fe2+ (0.076 nm in radius) to Fe3+ (0.064 nm in radius) took place inside the tourmaline-doped. This resulted in the shrinkage of unit cell of the tourmaline in the composite.

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Effect of nano-sized cerium–zirconium oxide solid solution on far-infrared emission properties of tourmaline powders

Modern Physics Letters B ◽

10.1142/s0217984915501833 ◽

2015 ◽

Vol 29 (30) ◽

pp. 1550183 ◽

Cited By ~ 6

Author(s):

Bin Guo ◽

Liqing Yang ◽

Weijie Hu ◽

Wenlong Li ◽

Haojing Wang

Keyword(s):

Photoelectron Spectroscopy ◽

Raw Materials ◽

Reference Sample ◽

Far Infrared ◽

Infrared Emission ◽

Emission Property ◽

Precipitation Method ◽

Xps Spectra ◽

X Ray ◽

Emission Properties

Far-infrared functional nanocomposites were prepared by the co-precipitation method using natural tourmaline [Formula: see text], where [Formula: see text] is [Formula: see text], [Formula: see text], [Formula: see text], or vacancy; [Formula: see text] is [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], or [Formula: see text]; [Formula: see text] is [Formula: see text], [Formula: see text], [Formula: see text], or [Formula: see text]; [Formula: see text] is [Formula: see text], [Formula: see text]; and [Formula: see text] is [Formula: see text], [Formula: see text], or [Formula: see text] powders, ammonium cerium(IV) nitrate and zirconium(IV) nitrate pentahydrate as raw materials. The reference sample, tourmaline modified with ammonium cerium(IV) nitrate alone was also prepared by a similar precipitation route. The results of Fourier transform infrared spectroscopy show that tourmaline modified with Ce and Zr has a better far-infrared emission property than tourmaline modified with Ce alone. Through characterization by transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), the mechanism for oxygen evolution during the heat process in the two composite materials was systematically studied. The XPS spectra show that [Formula: see text] ratio inside tourmaline modified with Ce alone can be raised by doping Zr. Moreover, it is showed that there is a higher [Formula: see text] ratio inside the tourmaline modified with Ce and Zr than tourmaline modified with Ce alone. In addition, XRD results indicate the formation of [Formula: see text] and [Formula: see text] crystallites during the heat treatment and further TEM observations show they exist as nanoparticles on the surface of tourmaline powders. Based on these results, we attribute the improved far-infrared emission properties of Ce–Zr doped tourmaline to the enhanced unit cell shrinkage of the tourmaline arisen from much more oxidation of [Formula: see text] to [Formula: see text] inside the tourmaline caused by the change in the catalyst redox properties of [Formula: see text] brought about by doping with [Formula: see text]. In all samples, tourmaline modified with 7.14 wt.% Ce and 1.86 wt.% Zr calcined at 800[Formula: see text]C for 5 h has the best far-infrared emission property with the maximum emissivity value of 98%.

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Far-Infrared Emission Properties and Thermogravimetric Analysis of Ceramic-Embedded Polyurethane Films

Polymers ◽

10.3390/polym13050686 ◽

2021 ◽

Vol 13 (5) ◽

pp. 686

Author(s):

Ashik Md Faisal ◽

Fabien Salaün ◽

Stéphane Giraud ◽

Ada Ferri ◽

Yan Chen ◽

...

Keyword(s):

Mechanical Properties ◽

Thermogravimetric Analysis ◽

Far Infrared ◽

Infrared Emission ◽

Integrating Sphere ◽

Ceramic Particles ◽

Emission Properties ◽

Emissive Property ◽

Physical Tests ◽

Sonication Technique

The far-infrared ray (FIR) is one kind of electromagnetic wave employed for numerous bio-interactive applications such as body thermoregulation, infrared therapy, etc. Tuning the FIR-emitting property of the functional textile surface can initiate a new horizon to utilize this property in sportswear or even smart textiles. Ceramic particles were studied for their unique ability to constantly emit FIR rays. The purpose of this research is to characterize the FIR emission properties and the thermogravimetric analysis of ceramic-embedded polyurethane films. For this purpose, ceramic particles such as aluminum oxide, silicon dioxide, and titanium dioxide were incorporated (individually) with water-based polyurethane (WPU) binder by a sonication technique to make a thin layer of film. Significant improvement in FIR emissive property of the films was found when using different ceramic particles into the polyurethane films. Reflection and transmission at the FIR range were measured with a gold integrating sphere by Fourier-transform infrared (FTIR) spectrometer. The samples were also characterized by thermogravimetric analysis (TGA). Different physical tests, such as tensile strength and contact angle measurements, were performed to illustrate the mechanical properties of the films. The study suggested that the mechanical properties of the polyurethane films were significantly influenced by the addition of ceramic particles.

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