Correlation between the physicomechanical properties and structural parameters of rolivsan-type binders cured by thermal and catalytic methods

Lukasov, S. V.; Zaitsev, B. А.; Kenunen, I.V.; Sukhanova, T. E.; Nasledov, D.M.; Garkavi, S. L.; Sidorovich, A. V.

doi:10.1007/bf00608840

Cited by 4 publications

(6 citation statements)

References 3 publications

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“…Previous reports cited thermal curing schedules for these polyester resin blends requiring very long times (up to 33 h) and increasing temperatures until a final cure temperature of 250°C was reached 5. From a practical standpoint, the time and temperature required to obtain a cured resin with reasonable properties should be determined.…”

Section: Resultsmentioning

confidence: 99%

“…In the case of resin sample D , an even higher curing temperature of 250°C was necessary. This weight loss below 300°C probably resulted from either residual monomer (incomplete cure due to vitrification) and/or volatile compounds formed during heat‐induced structural rearrangements 3, 5. Figure 3 shows the relationship between the amount of ester functionality in the resins and the weight loss observed at temperatures below 350°C.…”

Section: Resultsmentioning

confidence: 99%

“…5 From a practical standpoint, the time and temperature required to obtain a cured resin with reasonable properties should be determined. For this purpose, TGA studies were used to determine extent of cure and to evaluate the thermal and thermo-oxidative stability of cured samples (Table II).…”

Section: Curing and Thermal Stabilitymentioning

confidence: 99%

“…Unsaturated polyester resins that provide a unique combination of room‐temperature processability in the uncured state and high‐temperature (>200°C) stability in the cured state have been the subject of several reports 3–9. These resins are mixtures of various compositions of oligomers and difunctional aromatic monomers with styrenic or methacrylic functionality (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the mixture composition, the resulting resins range in physical state from liquids (with a very wide range of viscosities) to solids (with liquification points ranging from 25 to 115°C). The formation of a crosslinked matrix from the resin mixture with either thermal or catalytic curing has been studied in detail 4–6. Typically, the resins were hardened with very lengthy (>24 h) curing regimes with gradual increases in temperature 6…”

Section: Introductionmentioning

confidence: 99%

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Properties and toughening of heat‐resistant thermosets based on unsaturated ester resins

Canelas

Abbey

Fentress

2002

J of Applied Polymer Sci

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ABSTRACT:We describe our investigations of the curing chemistry and properties of heat-resistant thermosets comprised of unsaturated ester resins. We suggest a mechanism for the rearrangement of the cured matrix and volatile evolution during the curing process. We employed dielectric spectroscopy (DES) as a tool for monitoring the extent of cure, determining glass-transition temperatures, and evaluating electrical properties of the resins. We compare and contrast results obtained by DES to results obtained by dynamic mechanical analysis (DMA). Fracture testing showed that improvements were made in the toughness of these materials by blending the uncured resin with impact modifiers such as hydrocarbon or silicone reactive rubber adducts or poly(arylene ether sulfone)-based thermoplastic oligomers. We determined the effects of the thermoplastic toughening additive's molecular weight, concentration, and endgroup functionality on the phase separation, thermal stability, and fracture toughness of the blend.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Curing and Thermal Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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