Synthesis and thermal characterization of some hardeners for epoxy resins based on castor oil and cyclic anhydrides

2021 ◽  
Vol 159 ◽  
pp. 113087
Author(s):  
Fanica Mustata ◽  
Nita Tudorachi
Keyword(s):  
Castor Oil ◽  
Epoxy Resins ◽  
Thermal Characterization ◽  
Cyclic Anhydrides

Thermal Characterization of Polyurethane from Castor Oil Reinforced Sugarcane Straw Composites

2011 ◽  
Vol 415-417 ◽  
pp. 1103-1106
Author(s):  
Patricia Câmara Miléo ◽  
George Jackson de Moraes Rocha ◽  
Adilson Roberto Gonçalves
Keyword(s):  
Castor Oil ◽  
Thermal Characterization ◽  
Natural Fibre ◽  
Cellulose Fibres ◽  
Sugarcane Straw ◽  
The Matrix ◽  
One Step ◽  
Polyurethane Composites ◽  
Environmental Interests

The development in the area of natural-fibre-reinforced composites has greatly increased in recent years. Using castor oil polyurethane (PU) as matrix for composites reinforced with lignin and cellulose from sugarcane straw is in tune with economical and environmental interests. The aim of this work was the thermal degradation study of castor oil-polyurethane composites reinforced with cellulose from sugarcane straw. For the obtainment of cellulose, sugarcane straw was pretreated by steam explosion, followed by a delignification with NaOH. For the production of the PU, the polyol (castor oil) to diisocyanate mass ratio was 1.5:1.0. Reinforcement of the matrix was done changing the concentration of cellulose fibres (5,10,15,20% w/w). Thermogravimetric analysis of the materials was carried out. The results obtained showed that the process of decomposition of the matrix occurs in one step, while for the composites it occurs in two steps. The addition of reinforcement in the matrix basically did not change the thermal stability of the composite.

scholarly journals Structural and Thermal Characterization of Castor Oil Based Unsaturated Polyester Resin

2020 ◽  
Vol 32 (7) ◽  
pp. 1763-1767
Author(s):  
A. Chowdhury ◽  
S.K. Singh ◽  
P. Anthony
Keyword(s):  
Castor Oil ◽  
1H Nmr Spectroscopy ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Thermal Characterization ◽  
Decomposition Temperature ◽  
Unsaturated Polyester Resin ◽  
Polyester Resins ◽  
Thermal Stability Of

In the present study, unsaturated polyester resins based on castor oil was synthesized. Structure elucidation of the synthesized unsaturated polyester resin was done by FTIR and 1H NMR spectroscopy. Thermogravimetric analysis was used to evaluate the thermal stability of cured unsaturated polyester resin. Thermogram plot was further utilized to calculate various other parameters such as statistic heat-resistant index (Ts) and the integral procedural decomposition temperature (IPDT). Comparable properties with respect to commercial resins were reported for the synthesized polymers

scholarly journals Thermal characterization of castor oil as additive in lubricant oil using photothermal techniques

2018 ◽  
Vol 31 (1) ◽  
pp. 6-9
Author(s):  
G. Lara-Hernandez ◽  
J.C. Benavides-Parra ◽  
Alfredo Cruz-Orea ◽  
E. Contreras-Gallegos ◽  
C. Hernández-Aguilar ◽  
...  
Keyword(s):  
Automobile Industry ◽  
Castor Oil ◽  
Thermal Characterization ◽  
Partial Substitution ◽  
Oil Blends ◽  
Oil Additives ◽  
Lubricant Oil ◽  
Thermal Diffusivities ◽  
Commercial Lubricant

Over the last years extensively research has been carried out on full or partial substitution of supplies resources coming from renewable resources on traditionally non-renewable, in the case of the automobile sector there are progresses in bio-combustibles (biofuel) and synthetic oils coming from vegetable sources. There are strong efforts to find oil additives which can improve oils features in automobile industry, by adding vegetables oils to commercial lubricant oils, is expected to improve oil thermal stability.  In the present research, different ratios of castor oil (ricinus comunis)-motor oil blends were obtained and their thermal properties were characterized by using the so-called Back and Front Photopyroelectric (BPPE/FPPE) techniques. Several oil-additives concentrations were measured and thermal diffusivities and effusivities as well as densities are reported, getting full thermal characterization for every concentration. 

Preparation and Characterization of Environmental-Friendly Epoxy Resins/Clay Nanocomposites

2007 ◽  
Vol 119 ◽  
pp. 219-222
Author(s):  
Fan Long Jin ◽  
Mi Jeong Han ◽  
Jae Rock Lee ◽  
Soo Jin Park
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Castor Oil ◽  
Epoxy Resins ◽  
Clay Content ◽  
Interfacial Properties ◽  
Clay Nanocomposites ◽  
Environmental Friendly ◽  
Epoxidized Castor Oil

The environmental-compatible epoxy resins/clay nanocomposites were prepared by using epoxidized castor oil (ECO) and two ion-exchanged clays. The glass transition temperature (Tg) and mechanical interfacial properties of ECO/clay nanocomposites were investigated. As a result, the nanocomposites showed higher Tg than that of neat ECO. The mechanical interfacial properties of both the nanocomposites were significantly increased on increasing the clay content.

Synthesis, structural, and thermal characterization of a new binuclear copper(II) chelate complex bearing an amine-hardener for epoxy resins

2016 ◽  
Vol 69 (18) ◽  
pp. 2666-2676 ◽  
Author(s):  
Helen Lavrenyuk ◽  
Oleg Mykhalichko ◽  
Bartosz Zarychta ◽  
Volodymyr Olijnyk ◽  
Borys Mykhalichko
Keyword(s):  
Epoxy Resins ◽  
Thermal Characterization ◽  
Chelate Complex ◽  
Binuclear Copper

Random pseudo promptings applied to the thermal characterization of a wet porous material

1999 ◽  
Vol 6 (1) ◽  
pp. 101-108 ◽  
Author(s):  
E. Delacre ◽  
D. Defer ◽  
E. Antczak ◽  
B. Duthoit
Keyword(s):  
Porous Material ◽  
Thermal Characterization

Photoacoustic thermal characterization of the dehydration process of Agar-SiO2emulsions

2005 ◽  
Vol 125 ◽  
pp. 177-180
Author(s):  
T. Lopez ◽  
M. Picquart ◽  
G. Aguirre ◽  
Y. Freile ◽  
D. H. Aguilar ◽  
...  
Keyword(s):  
Thermal Characterization ◽  
Dehydration Process
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