High-performance composite with 100 % bio-based carbon content produced from epoxidized linseed oil, citric acid and flax fiber reinforcement

Author(s):  
Andrea Todorovic ◽  
Yannick Blößl ◽  
Gernot Oreski ◽  
Katharina Resch-Fauster
Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1409 ◽  
Author(s):  
Kerstin Thiele ◽  
Nicole Eversmann ◽  
Andreas Krombholz ◽  
Daniela Pufky-Heinrich

Structural properties of resins based on epoxidized linseed oil (ELO) were investigated in reference to varying amounts of the hardener components methyltetrahydrophthalic anhydride (MTHPA), pyromellitic dianhydride (PMDA) and maleic acid (MA). This includes gel time and the Shore A and D hardness. The shortest gel time of 0.9 min and the highest Shore A and D hardness of 85 and 34 were found at a nMTHPA/nPMDA/nMA molar ratio of 8/1/8. To study the effect of the ELO mass on gel time and hardness, different masses of ELO (8, 10, 12, 14 and 16 g) were used, keeping the amount of the hardener system (4 g) (MTHPA, PMDA and MA) constant. With increased ELO mass, gel time increased while the Shore A and D hardness of the samples did not differ when up to 14 g ELO was applied. Substitution of petrol-based PMDA with biogenic compounds, specifically oxalic acid and citric acid, resulted in new bio-based epoxy resins with shorter gel times while maintaining hardness.


1998 ◽  
Author(s):  
A. Crasto ◽  
D. Anderson ◽  
R. Esterline ◽  
K. Han ◽  
C. Hill

2021 ◽  
Vol 5 (6) ◽  
pp. 151
Author(s):  
Mustapha El Kanzaoui ◽  
Chouaib Ennawaoui ◽  
Saleh Eladaoui ◽  
Abdelowahed Hajjaji ◽  
Abdellah Guenbour ◽  
...  

Given the amount of industrial waste produced and collected in the world today, a recycling and recovery process is needed. The study carried out on this subject focuses on the valorization of one of these industrial wastes, namely the fly ash produced by an ultra-supercritical coal power plant. This paper describes the use and recovery of fly ash as a high percentage reinforcement for the development of a new high-performance composite material for use in various fields. The raw material, fly ash, comes from the staged combustion of coal, which occurs in the furnace of an ultra-supercritical boiler of a coal-fired power plant. Mechanical compression, thermal conductivity, and erosion tests are used to study the mechanical, thermal, and erosion behavior of this new composite material. The mineralogical and textural analyses of samples were characterized using Scanning Electron Microscopy (SEM). SEM confirmed the formation of a new composite by a polymerization reaction. The results obtained are very remarkable, with a high Young’s modulus and a criterion of insulation, which approves the presence of a potential to be exploited in the different fields of materials. In conclusion, the composite material presented in this study has great potential for building material and could represent interesting candidates for the smart city.


Author(s):  
Alexey A. Zhokh ◽  
Andrey I. Trypolskyi ◽  
Valentina I. Gritsenko ◽  
Tamila G. Serebrii ◽  
Peter E. Strizhak

2021 ◽  
Vol 486 ◽  
pp. 229363
Author(s):  
Mengyang Jia ◽  
Zhijie Bi ◽  
Chuan Shi ◽  
Ning Zhao ◽  
Xiangxin Guo

2021 ◽  
Author(s):  
Ana Laura Larralde ◽  
Loreto Troncoso ◽  
M. Consuelo Alvarez-Galvan ◽  
Vanessa Cascos ◽  
Maria Teresa Fernandez-Diaz ◽  
...  

An A-site deficient perovskite with metallic Ni in exsolution, Ni-Sr0.9Mo0.9O3-δ, has been prepared, characterized and tested as an anode material in intermediate-temperature solid-oxide fuel cells (IT-SOFCs). It was obtained by...


RSC Advances ◽  
2021 ◽  
Vol 11 (24) ◽  
pp. 14484-14494
Author(s):  
Yahao Liu ◽  
Jian Zheng ◽  
Xiao Zhang ◽  
Yongqiang Du ◽  
Guibo Yu ◽  
...  

We successfully modified graphene oxide with amino-terminated hyperbranched polyamide (HGO), and obtained a high-performance composite with enhanced strength and elongation at break via cross-linking hydroxyl-terminated polybutadiene chains with HGO.


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