Potential Effect of Cavitation on the Physical Properties of Interesterified Soybean Oil Using High‐Intensity Ultrasound: A Long‐Term Storage Study

2020 ◽  
Vol 97 (10) ◽  
pp. 1105-1117
Author(s):  
Juhee Lee ◽  
Jack Youngs ◽  
Peter Birkin ◽  
Tadd Truscott ◽  
Silvana Martini
Author(s):  
W. L. Daugherty

Many radioactive material shipping packages incorporate cane fiberboard overpacks for thermal insulation and impact resistance. Mechanical, thermal and physical properties have been measured on cane fiberboard following thermal aging in several temperature/humidity environments. Several of the measured properties change significantly over time in the more severe environments, while other properties are relatively constant. These properties continue to be tracked, with the goal of developing a model for predicting a service life under long-term storage conditions.


2017 ◽  
Vol 82 (3) ◽  
pp. 594-604 ◽  
Author(s):  
Chao-Hui Feng ◽  
Cheng Li ◽  
Juan Francisco García-Martín ◽  
Pradeep Kumar Malakar ◽  
Yue Yan ◽  
...  

2012 ◽  
Vol 16 (1) ◽  
pp. 104-113 ◽  
Author(s):  
Abdollah Golmohammadi ◽  
Amir H. Afkari-Sayyah

2018 ◽  
Vol 112 ◽  
pp. 233-240 ◽  
Author(s):  
Consuelo Pita-Calvo ◽  
Esther Guerra-Rodríguez ◽  
Jorge A. Saraiva ◽  
Santiago P. Aubourg ◽  
Manuel Vázquez

2021 ◽  
Vol 896 ◽  
pp. 157-163
Author(s):  
Mizuki Takigawa ◽  
Nana Katsuoka ◽  
Shin Ichiro Hashimoto ◽  
Shigeyuki Date

Polycarboxylic acid-based superplasticizers are used for all types of concrete, but it is not well known that their fundamental performance changes with heating. Previous research confirmed that the superplasticizer storage environment changes its physical properties, which in turn changes the fluidity and workability of concrete or mortar. Therefore, this study confirmed the thermal stimulation effect on polycarboxylic acid-based and other superplasticizers and also confirmed the mechanism of polymer “entanglement” using superplasticizers that were centrifuged to simulate long-term storage. Based on the results, it was confirmed that the change in physical properties due to the change in environmental temperature is specific to polycarboxylic acid-based superplasticizers. It was also confirmed that centrifugal treatment of the superplasticizer slightly decreased its performance but increased the effect of thermal stimulation.


2006 ◽  
Vol 79 (1) ◽  
pp. 72-81 ◽  
Author(s):  
Jintana Yunyongwattanakorn ◽  
Jitladda T. Sakdapipanich

Abstract The physical properties during long term storage of selected commercial Standard Thai Rubbers (STR), i.e. STR XL, STR 5L and STR CV60 as high-graded natural rubber (NR), were investigated. Sections of commercial NR were subjected to examination after storage-hardening. STR 5L showed clearly an increase in Mooney viscosity (VR), Mooney relaxtion (MR30), gel content and initial plasticity (P0), higher than that of STR XL. This result suggests that STR 5L exhibits the highest inconsistency in physical properties. The increasing viscosity and gel content of STR 5L and STR XL samples suggest the occurrence of a crosslink structure during storage. STR CV60, known as a viscosity-stabilized NR sample, also showed an increase in VR, gel content, P0, and high PRI value during long storage. These findings indicate that storage-hardening occurred in the rubber samples even after carefully controlled production procedures. As for the different sections of samples, there was no clear relation with gel content with respect to storage time, indicating that depth or positions of specimens in a certain rubber bale did not affect the storage-hardening phenomenon.


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