Effect of cloisite 30B clay and sisal fiber on dynamic mechanical and fracture behavior of unsaturated polyester toughened epoxy network

2015 ◽  
Vol 37 (9) ◽  
pp. 2832-2846 ◽  
Author(s):  
Nagarjuna Reddy Paluvai ◽  
Smita Mohanty ◽  
Sanjay K. Nayak
Keyword(s):  
Fracture Behavior ◽  
Unsaturated Polyester ◽  
Sisal Fiber ◽  
Epoxy Network ◽  
Dynamic Mechanical ◽  
Toughened Epoxy ◽  
Cloisite 30B

Reuse potential of functionalized thermoplastic waste as reinforcement for thermoset polymers: Mechanical properties and erosion resistance

2021 ◽  
pp. 002199832110370
Author(s):  
Tihomir Kovačević ◽  
Saša Brzić ◽  
Melina Kalagasidis Krušić ◽  
Jovica Nešić ◽  
Ljubica Radović ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Activation Energy ◽  
Erosion Resistance ◽  
Unsaturated Polyester ◽  
Chemical Activation ◽  
Mining Industry ◽  
Dynamic Mechanical Properties ◽  
Variable Loading ◽  
Polymer Waste ◽  
Dynamic Mechanical

Two types of polymer waste materials, poly(ethylene terephthalate) (PET) and polycarbonate based Colombian Resin (CR-39), were used for the designing of fully recycled composite materials. Waste PET was employed for the synthesis of thermoset unsaturated polyester resin (UPR), while CR-39 was used as reinforcement in the UPR matrix. Prior to mixing, CR-39 particles were subjected to oxidation and chemical activation using acids/base and ethanol amine, respectively. The effect of the modifier type and variable loading of the activated CR-39 particles on mechanical and dynamic-mechanical properties of the corresponding composites was investigated. The greatest improvement in the tensile and flexural strength of UPR resin was achieved with the composite containing 0.5 wt% of amine activated filler particles, 96.0% and 62.2%, respectively. The Arrhenius equation was used to calculate the activation energy for glass transition from dynamic mechanical properties measured at various frequencies. The activation energy of the main transition for UPR resin and composites were calculated to be 173 and 350 kJ·mol−1 indicating that reinforcement results in an increase in the energy barrier to macromolecules viscoelastic relaxation. In addition, erosion resistance was studied during exposure of samples to cavitation tests. According to the obtained results, these materials can be applied in construction and mining industry.

Dynamic mechanical properties of sisal fiber reinforced polyester composites fabricated by resin transfer molding

2009 ◽  
Vol 30 (6) ◽  
pp. 768-775 ◽  
Author(s):  
P.A. Sreekumar ◽  
Redouan Saiah ◽  
Jean Marc Saiter ◽  
Nathalie Leblanc ◽  
Kuruvilla Joseph ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Resin Transfer Molding ◽  
Dynamic Mechanical Properties ◽  
Sisal Fiber ◽  
Fiber Reinforced ◽  
Transfer Molding ◽  
Dynamic Mechanical ◽  
Polyester Composites

Effect of molecular weight between crosslinks on the fracture behavior of rubber-toughened epoxy adhesives

2000 ◽  
Vol 79 (1) ◽  
pp. 38-48 ◽  
Author(s):  
Byoung Un Kang ◽  
Jae Young Jho ◽  
Junkyung Kim ◽  
Sang-Soo Lee ◽  
Min Park ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Fracture Behavior ◽  
Epoxy Adhesives ◽  
Toughened Epoxy ◽  
Rubber Toughened
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