Polymer Science and Technology, 2nd Edition (Joel R. Fried)

Allin, Shawn B.

doi:10.1021/ed081p809

Cited by 5 publications

(3 citation statements)

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“…Figures (5)(6)(7)(8) show the TGA/DTG thermograms of four cured resol resins prepared in this study, while the thermal parameters obtained from these thermograms are listed in the Table (5 and 6) respectively.…”

Section: Ftir-analysismentioning

confidence: 99%

“…All DSC measurements were made on a Shimadzu DSC-60 with a single heating rate of 5 °C/min and a scanning temperature range from 25 to 350 °C. Analysis of the results of these dynamic scans is listed in the Table (7), while the thermograms curves of DSC for the prepared resol resins are shown in Figures (9)(10)(11)(12).…”

Section: Dsc Studymentioning

confidence: 99%

“…Phenolic resin provides intermolecular hydrogen bonding as a domain driving force to interact with hydroxyl, carbonyl, amide, ester and other hydrogen bonding functional groups (5,6) . Also, the characteristic of the phenolic resin is to be determined by its physical properties, thermal and electrical properties (7) . During the last century phenolic resin played an important role as engineering plastics, at the first commercialized synthesis resin, phenol formaldehyde (PF) resin became indispensable because of it is excellent mechanical properties, thermal stability and chemical resistance (8,9) .…”

Section: Introducctionmentioning

confidence: 99%

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Synthesis and thermal properties of some phenolic resins

Alshawi

Hanoosh

2019

innovaciencia

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Introduction: Phenolic resins have been in use since the early twentieth century and are considered the first class of synthetic polymers to achieve commercial success, moreover phenolic resins continue to succeed and attract special interest in a large range of industrial applications such as adhesives, paints, and composites; because of their unique physical and chemical properties. Materials and Methods: Prepolymers resol resins (RR, RH, RP, and RC) were synthesized by the reaction of phenolic compounds (resorcinol, hydroquinone, phloroglucinol, and catechol) respectively, with formaldehyde at molar ratio phenol/ formaldehyde 1/1.5, using sodium hydroxide as a catalyst. These resins were characterized by FTIR. The curing reaction of these resins was evaluated using differential scanning calorimetry (DSC), while the thermal stability study was evaluated using thermogravimetric analysis (TGA). Results and Discussion:From the results showing that these prepolymers have different curing temperatures and curing energy, while the TGA study showed that the cured resins have decomposition temperature more than 300 ºC, and char residue at 650 ºC more than 60%. Conclusions: These resol resins have different gel times (8-55) min, and viscosities (435-350) mpa.s. The curing temperature of these resin obtained from DSC curves was (120, 129, 105 and 127 °C), while the thermal behavior of the cured resins obtained from TGA curves showed that these cured resin have two decomposition temperatures and the rate of decomposition in the order of RC < RR< .

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Section: Ftir-analysismentioning

confidence: 99%