Glass transition evaluation of commercially available epoxy resins used for civil engineering applications

Carbon Fiber Reinforced Polymer and Epoxy Adhesive Tensile Test Failure Analysis Using Scanning Electron Microscopy

“…It deserves attention because typically the adhesive of the FRP composite system fails first in the mechanical tests. Michels et al 9 studied the influence of the curing condition (room temperature or accelerated curing) in glass transition temperature (Tg) of Sikadur 30, using Dynamic Mechanical Analysis (DMA) in the temperature range from -20 ºC to 150 ºC. It was observed that glass transition temperature (Tg) can present values in the range from 40 ºC to 50 ºC depending on the curing condition.…”

Evaluation of the Mechanic and Electrochemical Properties of an Epoxy Coating with Addition of Different Polyhedral Oligomeric Silsesquioxanes (POSS) Applied on Substrate of Low Alloy Steel

“…Historically, from the early 20 th century, there was a significant progress in technological innovation segment of organic coatings. This development is illustrated by the emergence of nitrocellulose-based coatings in 1920, synthetic resins replacing the vegetal and animal based resins in 1930, epoxy resins prepared from epichlorohydrin in 1927, epoxy resins based on bisphenol-A in 1936 [3][4][5] and, consequently, an improvement of the employees painting methods 4,6,7 . The epoxy resin is one of the most used matrices in the production of coatings.…”

“…The epoxy resin is one of the most used matrices in the production of coatings. It stands out in the group of thermosetting materials due to the properties as ease of processing, mechanic properties and thermal stability 2,3,[6][7][8][9] . Among the main applications for epoxy resins, its main uses are in organic coatings [1][2][3]5 , polymeric composites, encapsulants and industrial adhesives 6,7,10 .…”

“…It stands out in the group of thermosetting materials due to the properties as ease of processing, mechanic properties and thermal stability 2,3,[6][7][8][9] . Among the main applications for epoxy resins, its main uses are in organic coatings [1][2][3]5 , polymeric composites, encapsulants and industrial adhesives 6,7,10 . However, properties as hardness, tensile strength and thermal resistance have been systematically modified by using different materials such as clays, halogenated compounds and, more recently, polyhedral oligomeric silsesquioxanes (POSS), applied in several polymeric matrices for improving corrosion resistance 6,7,10 .…”

“…Among the main applications for epoxy resins, its main uses are in organic coatings [1][2][3]5 , polymeric composites, encapsulants and industrial adhesives 6,7,10 . However, properties as hardness, tensile strength and thermal resistance have been systematically modified by using different materials such as clays, halogenated compounds and, more recently, polyhedral oligomeric silsesquioxanes (POSS), applied in several polymeric matrices for improving corrosion resistance 6,7,10 . The materials obtained after this step of modification are known as composites, or hybrid materials, constituting systems of two or more materials.…”