Chemical modification of dicyclopentadiene-based epoxy resins to improve compatibility and thermal properties

Hsiue, Ging‐Ho; Wei, Hsiao-Fen; Shiao, Sing-Jen; Kuo, W. J.; Sha, Yi‐An

doi:10.1016/s0141-3910(01)00092-1

Cited by 46 publications

(18 citation statements)

References 15 publications

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“…In transitioning to the formulation prepared using the lowest molecular weight siloxane pre‐polymer (1000–1100 g mol −1 ), SiCE‐H11, T d is shifted upwards by nearly 100 °C and is assigned to the increased thermochemical stability arising from the incorporation of the siloxane pre‐polymer . Similarly, the char yield also increases to about 44% as a result of the siloxane pre‐polymer . The SiCE‐H21 elastomer shows a further increase in T d by about 60 °C and the char yield increases to about 70% with respect to SiCE‐H11.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of siloxane‐based cyanate ester elastomers from readily available materials: a top‐down approach

Jennings

Morey

Guenthner

et al. 2016

Polymer International

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A number of siloxane‐based cyanate ester (SiCE) elastomers were prepared from commercially available starting reagents employing a hydrosilylation reaction. Each elastomer was designed to utilize 2,4,6‐tris(allyloxy)‐1,3,5‐triazine as a crosslinker and multifunctional vinyl component in the hydrosilylation reaction, ensuring that the triazine rings were completely formed, and thus the elastomers resemble fully cured cyanate ester networks. The hydride‐terminated siloxane components used were varied from small‐molecule siloxanes to pre‐polymers of different molecular weights. Attenuated total reflectance Fourier transform infrared analysis confirmed the successful hydrosilylation reaction and complete curing of the SiCE elastomers via functional group analysis. Thermal characterization by thermogravimetric analysis and differential scanning calorimetry demonstrated that thermal properties of the elastomers could be tailored depending on the type of siloxane component that was utilized. The gel content of the elastomers was also determined. Investigations into the effects of a platinum catalyst on the elastomers determined that the presence of the catalyst affected the thermochemical stability of the SiCE elastomers. Published 2016. This article is a U.S. Government work and is in the public domain in the USA.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of siloxane‐based cyanate ester elastomers from readily available materials: a top‐down approach

Jennings

Morey

Guenthner

et al. 2016

Polymer International

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“…The exothermic curing peak obtained on the DSC scan for SH bleed. This peak can tell us that second step of polymerization is not complete and after additional heating of the pDCPD, more crosslinking between polymer chains can be created .…”

Section: Resultsmentioning

confidence: 99%

Thermoplastic acrylic resin with self‐healing properties

Yerro

Radojević

Radović

et al. 2015

Polymer Engineering & Sci

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This article presents a novel processing method of a self‐healing acrylic thermoplastic material starting from a healing agent in solution form. The self‐healing system consisted of a solution of the healing agent dicyclopentadiene (DCPD) in dimethylformamide (DMF) and a solution of the catalyst bis(tricyclohexylphosphine) benzylidene ruthenium (IV) dichloride (called Grubbs' catalyst) in dichloromethane (DCM). Hollow glass tubes filled with the self‐healing components were incorporated into autopolymerizing acrylic resins. The one set of tubes was filled with a solution of DCPD (containing the dye Rhodamine B as a marker) and the other set with a solution of Grubbs' catalyst in dichloromethane. FTIR and DSC analyses revealed that a poly(DCPD) film formed at the healed interface. The low energy impact tests of the samples showed a recovery of 83% after 4 days. The benefits of the Grubb's catalyst solution are twofold; besides the repair of the cracks, which is common for such a system, the reaction could decrease the content of residual monomer in the acrylic resin, which could reduce diffusion of residual monomer out of the resins. POLYM. ENG. SCI., 56:251–257, 2016. © 2015 Society of Plastics Engineers

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“…One of the most commonly used group of curing agents for liquid epoxy resins are aliphatic [9][10][11][12][13][14], or aromatic [15][16][17][18] amines or imidazole derivatives [19,20]. Recently, among frequently studied modifiers of epoxy polymers are silicone containing compounds, including various siloxanes or silsesquioxanes [21][22][23][24][25][26][27][28][29][30]. The effect of two low-molecular siloxanes: 1,3-Bis(glycidyloxypropyl)-1,1,3,3-tetramethyldisiloxane and 1,3-bis(aminopropyl)-1,1,3,3-tetramethyldisiloxane on performance properties of liquid bisphenol A epoxy resin cured with triethylenetetramine were reported in our previous paper [25].…”

Section: Introductionmentioning

confidence: 99%

“…The appropriate tool to study the problem is the thermal analysis, in particular the conventional or temperaturemodulated differential scanning calorimetry (DSC). The DSC study can be carried out in a dynamic [9,[31][32][33][34][35][36][37][38] or isothermal mode [22,[39][40][41].…”

Section: Introductionmentioning

confidence: 99%

A quantitative approach to dynamic and isothermal curing of an epoxy resin modified with oligomeric siloxanes

Murias

Byczyński

Maciejewski

et al. 2015

J Therm Anal Calorim

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The reactivity of a system comprising commercial epoxy resin Epidian Ò 6 (E6) and triethylenetetramine (Z-1) hardener was studied. The system was modified with two low-molecular siloxane modifiers: 1,3-bis(glycidyloxypropyl)-1,1,3,3-tetramethyldisiloxane (DS1) and 1,3-bis(aminopropyl)-1,1,3,3-tetramethyldisiloxane (DS2). The modifiers replaced 10 mass% of E6 or Z-1, respectively. The systems E6/DS2 and DS1/Z-1 were also studied. Enthalpy of curing was determined for all systems in isothermal conditions and dynamically, i.e., in the range of 0-250°C with linearly increasing temperature at the rate of 2, 5, 10, and 20°C min -1 . The activation energy of curing was determined using isoconversional methods by Friedman and Kissinger-Akahira-Sunose. The epoxy systems containing siloxane modifiers had generally lower activation energies than the reference E6/Z-1 system. The time to gelation measurements were taken using the temperaturemodulated differential scanning calorimetry.

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Chemical modification of dicyclopentadiene-based epoxy resins to improve compatibility and thermal properties

Cited by 46 publications

References 15 publications

Synthesis and characterization of siloxane‐based cyanate ester elastomers from readily available materials: a top‐down approach

Synthesis and characterization of siloxane‐based cyanate ester elastomers from readily available materials: a top‐down approach

Thermoplastic acrylic resin with self‐healing properties

A quantitative approach to dynamic and isothermal curing of an epoxy resin modified with oligomeric siloxanes

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