scholarly journals Inner surface modification of halloysite nanotubes and its influence on morphology and thermal properties of polystyrene/polyamide-11 blends

2016 ◽  
Vol 66 (2) ◽  
pp. 300-312 ◽  
Author(s):  
Mohamed Sahnoune ◽  
Aurélie Taguet ◽  
Belkacem Otazaghine ◽  
Mustapha Kaci ◽  
José-Marie Lopez-Cuesta
Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 309
Author(s):  
Yurong Wu ◽  
Longshan Xu ◽  
Yanying Jiang

A uniform, monodispersed superfine cuprous oxide (Cu2O) sphere with a mean diameter of 850 nm has been synthesized by solution reduction. The study reported the synthesis and thermal properties of Cu2O/PP composites for the first time. The surface modification of the superfine Cu2O sphere was carried out by using a silane coupling agent KH-570. Fourier-transform infrared (FTIR) spectroscopy and the thermogravimetric analysis (TGA) curve revealed that the Cu2O had been successfully modified by silane coupling agent KH570. The scanning electron microscope (SEM) shows that the modified Cu2O can be uniformly dispersed in the polypropylene (PP) matrix, because through surface modification, there are some active functional groups on its surface, such as the ester group, which improves its compatibility with the PP matrix. The thermal stability of Cu2O/PP composites was improved by adding a small amount of Cu2O (1 wt % of PP). Therefore, based on the potential bacteriostasis of cuprous oxide, the low cost of PP and the results of this study, it is predicted that Cu2O/PP composites can be used in infant preparation (such as milk bottles) with low cost and good thermal stability in the near future.


2020 ◽  
Vol 137 (38) ◽  
pp. 49135 ◽  
Author(s):  
Agata Zubkiewicz ◽  
Anna Szymczyk ◽  
Sandra Paszkiewicz ◽  
Roman Jędrzejewski ◽  
Elżbieta Piesowicz ◽  
...  

2018 ◽  
Vol 284 ◽  
pp. 1080-1085 ◽  
Author(s):  
O.V. Burlachenko ◽  
O.G. Chesnokova ◽  
T.F. Cherednichenko

The article highlights the results of the study of thermophysical properties of ultrathin liquid insulation when used to protect steel elements embedded in a multilayer outer wall. Conducted graphical analysis of the problem being solved. The results of temperature calculations with linear thermal properties showed that the unprotected insulation of steel embedded elements may freeze, and the formation of mold on the inner surface of the wall. The use of superfine heat insulation for thermal protection of mortgages of steel elements inside the construction of multilayer exterior walls gives a positive result. As a result of constructive solutions with the use of superfine thermal insulation can increase the average temperature of the inner bearing part of a wall of concrete. In addition, there is also a possibility to increase the temperature on the contact line between steel element with a load-bearing wall of concrete.


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