A novel anti-counterfeiting approach: thermochromic pigment activated by Yb3+ doped photothermal particles

2021 ◽  
Author(s):  
Jorge Alberto Molina-Gonzalez ◽  
Abril Arellano ◽  
Haggeo Desirena ◽  
Gonzalo Ramirez ◽  
Octavio Meza
Keyword(s):  
Thermochromic Pigment

One Step Thermochromic Pigment Printing and Ag NPs Antibacterial Functional Finishing of Cotton and Cotton/PET Fabrics

2018 ◽  
Vol 19 (11) ◽  
pp. 2317-2323 ◽  
Author(s):  
Tarek Abou Elmaaty ◽  
Shaimaa M. Ramadan ◽  
Sally M. Nasr Eldin ◽  
Gehan Elgamal
Keyword(s):  
Ag Nps ◽  
One Step ◽  
Thermochromic Pigment

scholarly journals Color stability of thermochromic pigment in maxillofacial silicone

2013 ◽  
Vol 5 (2) ◽  
pp. 75 ◽  
Author(s):  
Rosita Kantola ◽  
Lippo V.J. Lassila ◽  
Mimmi Tolvanen ◽  
Pekka K. Valittu
Keyword(s):  
Color Stability ◽  
Thermochromic Pigment

An anti-counterfeiting strategy based on thermochromic pigment activated by highly Yb3+ doped photothermal particles

2021 ◽  
Vol 850 ◽  
pp. 156709
Author(s):  
Jorge Molina-González ◽  
Abril Arellano-Morales ◽  
Octavio Meza ◽  
Gonzalo Ramírez-García ◽  
Haggeo Desirena
Keyword(s):  
Thermochromic Pigment

A Reflective Display Based on Thermochromic Pigment

2013 ◽  
Vol 584 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Kyong Chan Heo ◽  
Phil Kook Son ◽  
Youngku Sohn ◽  
Jonghoon Yi ◽  
Jin Hyuk Kwon ◽  
...  
Keyword(s):  
Reflective Display ◽  
Thermochromic Pigment

scholarly journals Effect of the Concentration of Pigment Slurry on the Film Performances of Waterborne Wood Coatings

Coatings ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 635 ◽  
Author(s):  
Yan ◽  
Chang ◽  
Qian
Keyword(s):  
Chemical Resistance ◽  
Impact Resistance ◽  
Base Material ◽  
Chinese Fir ◽  
Temperature Sensitive ◽  
Coating Film ◽  
Wood Coating ◽  
Wood Coatings ◽  
Surface Decoration ◽  
Thermochromic Pigment

Wood surface decoration and protection has become a topic of public concern. In this paper, a temperature-sensitive and reversible thermochromic waterborne wood coating was prepared by using Chinese fir board as the base material and a waterborne wood coating with the pigment slurry of thermochromic microcapsules as the paint base. The optical properties, mechanical properties and chemical resistance of the waterborne wood coating were tested, and its microstructure was analyzed. The results showed that when the concentration of thermochromic pigment slurry was 30.0%, the thermochromic property of the waterborne wood coating was best. The gloss of the waterborne wood coating with 15.0% pigment slurry of thermochromic microcapsules was high. The concentration of thermochromic pigment slurry had no effect on the adhesion, impact resistance, or chemical resistance of the waterborne wood coating. Based on the above results, the waterborne wood coating on Chinese fir had the best comprehensive performance when the concentration of thermochromic pigment slurry was 15.0%. This work will provide a technical reference for the industrialization of the thermochromic coating film on wood.

scholarly journals Measurement of Wavelength and Temperature-Dependent Optical Properties of Thermochromic Pigments

2017 ◽  
Vol 72 (2) ◽  
pp. 297-304 ◽  
Author(s):  
Jianying Hu ◽  
Xiong (Bill) Yu
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Transition Temperature ◽  
Optical Constants ◽  
Temperature Dependent ◽  
Thermochromic Material ◽  
Different Temperatures ◽  
Cubic Polynomial ◽  
Thermochromic Pigment

Thermochromic material is a substance that is capable of changing reversibly the color as the temperature rises. Therefore, the optical spectrum of thermochromic material is responsive to the environmental temperature. In this study, the temperature-dependent optical constants of thermochromic pigments over the wavelength of 350–1800 nm were investigated. Three kinds of thermochromic pigments featured with black, blue, and red colors at room temperature were suspended in water and the light reflection and transmission of the suspensions at different temperatures were measured by a multifunctional spectrophotometer. It was found that below the transition temperature of thermochromic material, the refractive index was 2.1–2.5, 2.2–2.6, and 2.0–2.4 over the wavelength range of 350–1800 nm for black, blue, and red thermochromic pigment, respectively, while above the transition temperature it reached 2.3–2.7, 2.4–2.9, and 2.4–2.7, respectively. It was also observed that the relationship between refractive index of thermochromic pigment and wavelength follows the cubic polynomial function. Furthermore, the extinction coefficient is in the range of 1 × 10−5–1.2 × 10−4 for all thermochromic pigments and remains approximately stable at different temperatures. The determination of optical constants of thermochromic pigments provides essential parameters in the modeling of light scattering and absorption by pigment particles to further fine-tune the optical properties of thermochromic coating.

Characterization of Thermochromic Fibers’ Response to Temperature Change

2015 ◽  
Vol 644 ◽  
pp. 74-77
Author(s):  
Clio G. Vossou ◽  
Stelios M. Potirakis ◽  
Symeon Simeonidis ◽  
Savvas Vassiliadis
Keyword(s):  
Temperature Change ◽  
Room Temperature ◽  
Color Change ◽  
Matrix Material ◽  
Color Model ◽  
Polymer Fiber ◽  
Temperature Changes ◽  
Response To Temperature ◽  
Thermochromic Pigment

The property of some materials to change their color in response to temperature changes is called thermochromism. A polymer fiber manufactured in such way that a thermochromic pigment is embedded in the polymeric matrix material develops accordingly thermochromic functionality and can be used as a temperature change indicator. The characterization of a polymer thermochromic fiber with respect to its color change in response to temperature change is presented in this paper. A specially developed characterization apparatus was developed for this purpose. The temperature span of the involved experiment was from 23.5°C (room temperature) to 60°C, while the tested fiber was found to be responsive regarding its chromatic variance mainly within the temperature range 30.5oC - 50oC. During the involved digital image processing, the chromatic shift of the sample was characterized according to the HSV (hue-saturation-value) color model. Fiber’s original color was found to change with temperature by presenting a monotonic reduction of saturation and value with temperature increase.

Development of Thermochromic Pigment Based Sportswear for Detection of Physical Exhaustion

2016 ◽  
Vol 8 (2) ◽  
pp. 279-295 ◽  
Author(s):  
Alicia Potuck ◽  
Sarah Meyers ◽  
Ariana Levitt ◽  
Eric Beaudette ◽  
Hong Xiao ◽  
...  
Keyword(s):  
Thermochromic Pigment

Use of thermochromic pigment in maxillofacial silicone elastomer

2013 ◽  
Vol 110 (4) ◽  
pp. 320-325 ◽  
Author(s):  
Rosita M. Kantola ◽  
Hemmo Kurunmäki ◽  
Pekka K. Vallittu ◽  
Lippo V.J. Lassila
Keyword(s):  
Silicone Elastomer ◽  
Thermochromic Pigment

scholarly journals Influence of Thermochromic Pigment Powder on Properties of Waterborne Primer Film for Chinese Fir

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 742 ◽  
Author(s):  
Xiaoxing Yan ◽  
Lin Wang ◽  
Xingyu Qian
Keyword(s):  
Electron Microscopy ◽  
Paint Film ◽  
Chinese Fir ◽  
Waterborne Coatings ◽  
Powder Concentration ◽  
Temperature Ranges ◽  
The Impact ◽  
Comprehensive Property ◽  
Thermochromic Pigment ◽  
Scanning Electron

This study chose organic thermochromic pigment powder and waterborne wood primer as the paint base, and Chinese fir board as the substrate to prepare thermochromic waterborne coatings with different concentrations of thermochromic pigment powder. The best concentration of thermochromic pigment powder for waterborne primer film on Chinese fir surface was explored. The experimental results showed that the color-changing property of the primer film was the best when the concentration of pigment powder in primer film was 5.0%–10%. There was a negative correlation between the gloss of the primer and the concentration of pigment powder. The gloss of the primer film was the highest when the concentration of pigment powder was 5%. When the concentration of pigment powder is 0%–20% and 25.0%–30%, the adhesion of the coating is grade 0 and grade 1, respectively. The resistance to the impact of primer film increased with the increase of concentration of pigment powder, but the resistance to the impact of primer film with 0%–30% of thermochromic pigment powder concentration was similar. Scanning electron microscopy showed that the higher the concentration of thermochromic pigment powder, the more particles and agglomeration. When the concentration of pigment powder was 5%, the distribution of particles was uniform and no agglomeration, and the microstructure of primer film was the best. Infrared spectroscopy showed that there was no difference in the composition of the paint film from 0% to 30%. The results showed that the comprehensive property of waterborne primer film on Chinese fir was better when the pigment concentration was 5%. Waterborne thermochromic primer film provides a potential application for the development of intelligent furniture in different temperature ranges.

Sign in / Sign up

Export Citation Format

Share Document