Epoxy resin/exfoliated clay hybrid materials with high thermal properties

2009 ◽  
Vol 30 (7) ◽  
pp. 948-954 ◽  
Author(s):  
Tiezhu Fu ◽  
Lianxiang Yu ◽  
Zhe Wang ◽  
Wenzhi Yu ◽  
Chengji Zhao ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Hybrid Materials

scholarly journals Reaction Mechanism and Mechanical Property Improvement of Poly(Lactic Acid) Reactive Blending with Epoxy Resin

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2429
Author(s):  
Krittameth Kiatiporntipthak ◽  
Nanthicha Thajai ◽  
Thidarat Kanthiya ◽  
Pornchai Rachtanapun ◽  
Noppol Leksawasdi ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Softening Temperature ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Nanoparticle Dispersion ◽  
Reactive Blending ◽  
Partial Miscibility ◽  
Epoxy Blends ◽  
Epoxy Content

Polylactic acid (PLA) was melt-blended with epoxy resin to study the effects of the reaction on the mechanical and thermal properties of the PLA. The addition of 0.5% (wt/wt) epoxy to PLA increased the maximum tensile strength of PLA (57.5 MPa) to 67 MPa, whereas the 20% epoxy improved the elongation at break to 12%, due to crosslinking caused by the epoxy reaction. The morphology of the PLA/epoxy blends showed epoxy nanoparticle dispersion in the PLA matrix that presented a smooth fracture surface with a high epoxy content. The glass transition temperature of PLA decreased with an increasing epoxy content owing to the partial miscibility between PLA and the epoxy resin. The Vicat softening temperature of the PLA was 59 °C and increased to 64.6 °C for 0.5% epoxy. NMR confirmed the reaction between the -COOH groups of PLA and the epoxy groups of the epoxy resin. This reaction, and partial miscibility of the PLA/epoxy blend, improved the interfacial crosslinking, morphology, thermal properties, and mechanical properties of the blends.

The effects of modified zinc oxide nanoparticles on the mechanical/thermal properties of epoxy resin

2020 ◽  
Vol 137 (43) ◽  
pp. 49330
Author(s):  
Yasmine N. Baghdadi ◽  
Lucia Youssef ◽  
Kamal Bouhadir ◽  
Mohammad Harb ◽  
Samir Mustapha ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Thermal Properties ◽  
Epoxy Resin ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles

Incorporation of epoxy resin and carbon nanotube into silica/siloxane network for improving thermal properties

2016 ◽  
Vol 51 (19) ◽  
pp. 9057-9073 ◽  
Author(s):  
Saeid Najafi-Shoa ◽  
Hossein Roghani-Mamaqani ◽  
Mehdi Salami-Kalajahi ◽  
Reza Azimi ◽  
Meysam Gholipour-Mahmoudalilou
Keyword(s):  
Thermal Properties ◽  
Carbon Nanotube ◽  
Epoxy Resin

Synthesis and thermal properties of urethane-containing epoxy resin

2015 ◽  
Vol 24 ◽  
pp. 20-23 ◽  
Author(s):  
Fan-Long Jin ◽  
Heng-Chang Liu ◽  
Baoqing Yang ◽  
Soo-Jin Park
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin

scholarly journals Preparation and properties of hybrid materials for high-rise constructions

2018 ◽  
Vol 33 ◽  
pp. 02075 ◽  
Author(s):  
Tatyana Matseevich
Keyword(s):  
Stress Relaxation ◽  
Epoxy Resin ◽  
Relaxation Process ◽  
Hybrid Materials ◽  
Mechanical Performance ◽  
Mechanical Relaxation ◽  
Physical Parameters ◽  
Quasi Equilibrium ◽  
High Rise ◽  
Long Time

The theme of the research is important because it allows to use hybrid materials as finishing in the high-rise constructions. The aim of the study was the development of producing coloured hybrid materials based on liquid glass, a polyisocyanate, epoxy resin and 2.4-toluylenediisocyanate. The detailed study of the process of stress relaxation at different temperatures in the range of 20-100°C was provided. The study found that the obtained materials are subject to the simplified technology. The materials easy to turn different colors, and dyes (e.g. Sudan blue G) are the catalysts for the curing process of the polymeric precursors. The materials have improved mechanical relaxation properties, possess different color and presentable, can be easily combined with inorganic base (concrete, metal). The limit of compressive strength varies from 32 to 17.5 MPa at a temperature of 20 to 100°C. The values σ∞ are from 20.4 to 7.7 MPa within the temperature range from 20 to 100°C. The physical parameters of materials were evaluated basing on the data of stress relaxation: the initial stress σ0, which occurs at the end of the deformation to a predetermined value; quasi-equilibrium stress σ∞, which persists for a long time relaxation process. Obtained master curves provide prediction relaxation behavior for large durations of relaxation. The study obtained new results. So, the addition of epoxy resin in the composition of the precursor improves the properties of hybrid materials. By the method of IR spectroscopy identified chemical transformations in the course of obtaining the hybrid material. Evaluated mechanical performance of these materials is long-time. Applied modern physically-based memory functions, which perfectly describe the stress relaxation process.

Evaluation of mechanical and thermal properties of modified epoxy resin by using acacia catechu particles

2019 ◽  
Vol 225 ◽  
pp. 239-246 ◽  
Author(s):  
Ahmer Hussain Shah ◽  
Xiao Li ◽  
Xiaodong Xu ◽  
Abdul Qadeer Dayo ◽  
Wen-bin Liu ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Mechanical And Thermal Properties ◽  
Acacia Catechu ◽  
Modified Epoxy
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