The Experts below are selected from a list of 30 Experts worldwide ranked by ideXlab platform

John R. Ebdon - One of the best experts on this subject based on the ideXlab platform.

  • Structure-property relationships in structural glass fibre reinforced composites from unsaturated polyester and Inherently Fire retardant phenolic resin matrix blends
    Composites Part B: Engineering, 2020
    Co-Authors: Baljinder K. Kandola, Latha Krishnan, John R. Ebdon, Peter Myler
    Abstract:

    Abstract The effects of matrices from co-cured blends of an unsaturated polyester (UP) with Inherently Fire-retardant and char-forming phenolic resoles (PH) on the mechanical and Fire performances of resultant glass fibre-reinforced composites have been investigated. Three different phenolic resoles with increasing order of compatibility with UP have been used. These are: (i) an ethanol soluble resin, (PH–S), (ii) an epoxy-functionalised resin (PH-Ep), and (iii) an allyl-functionalised resin (PH–Al). The mechanical properties of the composites increased with increasing compatibility with two resin types as might be expected, but not previously demonstrated. However, even with the least compatible resin (PH–S), the impact properties were unaffected and the flexural/tensile properties while reduced, were still acceptable for certain applications. Fire properties were however, in reverse order as previously observed in cast resin samples from these composites. Moreover, the reduction in flammability was less compared to those of the cast resin samples, reported previously, explained here based on the insulating effect of glass fibre reinforcement.

  • Blends of unsaturated polyester and phenolic resins for application as Fire-resistant matrices in fibre-reinforced composites. Part 2: Effects of resin structure, compatibility and composition on Fire performance
    Polymer Degradation and Stability, 2015
    Co-Authors: Baljinder K. Kandola, Latha Krishnan, Dario Deli, John R. Ebdon
    Abstract:

    The effects of co-curing blends of an unsaturated polyester (UP) with Inherently Fire-retardant and char-forming phenolic resoles (PH) on the thermal stability and Fire retardancy of the resulting resins have been investigated. To overcome the challenge of UP/PH incompatibility, arising from their different chemical structures and curing mechanisms (radical vs. condensation), different phenolic resoles have been used: ethanol-soluble, epoxyfunctionalized, and allyl-functionalized. A traditional water-based resole has also been used to give a reference non-compatible system. In Part 1 of this series of publications it was shown that the compatibility of the two resins increases with functionalization; the allyl– functionalized resole showing the best compatibility with UP. Limiting oxygen index measurements and cone calorimetry have shown that Fire performance of the functionalized PH resins and their blends with UP is worse than that from the unfunctionalized PH resin, but still significantly better than that of the UP. To understand this behaviour, thermal analyses coupled with infrared spectroscopy of volatile degradation products have been used on all resins and their blends, based on which, mechanisms of their decomposition and interactions are proposed, and the effects of these on flammability are discussed.

Baljinder K. Kandola - One of the best experts on this subject based on the ideXlab platform.

  • Structure-property relationships in structural glass fibre reinforced composites from unsaturated polyester and Inherently Fire retardant phenolic resin matrix blends
    Composites Part B: Engineering, 2020
    Co-Authors: Baljinder K. Kandola, Latha Krishnan, John R. Ebdon, Peter Myler
    Abstract:

    Abstract The effects of matrices from co-cured blends of an unsaturated polyester (UP) with Inherently Fire-retardant and char-forming phenolic resoles (PH) on the mechanical and Fire performances of resultant glass fibre-reinforced composites have been investigated. Three different phenolic resoles with increasing order of compatibility with UP have been used. These are: (i) an ethanol soluble resin, (PH–S), (ii) an epoxy-functionalised resin (PH-Ep), and (iii) an allyl-functionalised resin (PH–Al). The mechanical properties of the composites increased with increasing compatibility with two resin types as might be expected, but not previously demonstrated. However, even with the least compatible resin (PH–S), the impact properties were unaffected and the flexural/tensile properties while reduced, were still acceptable for certain applications. Fire properties were however, in reverse order as previously observed in cast resin samples from these composites. Moreover, the reduction in flammability was less compared to those of the cast resin samples, reported previously, explained here based on the insulating effect of glass fibre reinforcement.

  • Blends of unsaturated polyester and phenolic resins for application as Fire-resistant matrices in fibre-reinforced composites. Part 2: Effects of resin structure, compatibility and composition on Fire performance
    Polymer Degradation and Stability, 2015
    Co-Authors: Baljinder K. Kandola, Latha Krishnan, Dario Deli, John R. Ebdon
    Abstract:

    The effects of co-curing blends of an unsaturated polyester (UP) with Inherently Fire-retardant and char-forming phenolic resoles (PH) on the thermal stability and Fire retardancy of the resulting resins have been investigated. To overcome the challenge of UP/PH incompatibility, arising from their different chemical structures and curing mechanisms (radical vs. condensation), different phenolic resoles have been used: ethanol-soluble, epoxyfunctionalized, and allyl-functionalized. A traditional water-based resole has also been used to give a reference non-compatible system. In Part 1 of this series of publications it was shown that the compatibility of the two resins increases with functionalization; the allyl– functionalized resole showing the best compatibility with UP. Limiting oxygen index measurements and cone calorimetry have shown that Fire performance of the functionalized PH resins and their blends with UP is worse than that from the unfunctionalized PH resin, but still significantly better than that of the UP. To understand this behaviour, thermal analyses coupled with infrared spectroscopy of volatile degradation products have been used on all resins and their blends, based on which, mechanisms of their decomposition and interactions are proposed, and the effects of these on flammability are discussed.

Peter Myler - One of the best experts on this subject based on the ideXlab platform.

  • Structure-property relationships in structural glass fibre reinforced composites from unsaturated polyester and Inherently Fire retardant phenolic resin matrix blends
    Composites Part B: Engineering, 2020
    Co-Authors: Baljinder K. Kandola, Latha Krishnan, John R. Ebdon, Peter Myler
    Abstract:

    Abstract The effects of matrices from co-cured blends of an unsaturated polyester (UP) with Inherently Fire-retardant and char-forming phenolic resoles (PH) on the mechanical and Fire performances of resultant glass fibre-reinforced composites have been investigated. Three different phenolic resoles with increasing order of compatibility with UP have been used. These are: (i) an ethanol soluble resin, (PH–S), (ii) an epoxy-functionalised resin (PH-Ep), and (iii) an allyl-functionalised resin (PH–Al). The mechanical properties of the composites increased with increasing compatibility with two resin types as might be expected, but not previously demonstrated. However, even with the least compatible resin (PH–S), the impact properties were unaffected and the flexural/tensile properties while reduced, were still acceptable for certain applications. Fire properties were however, in reverse order as previously observed in cast resin samples from these composites. Moreover, the reduction in flammability was less compared to those of the cast resin samples, reported previously, explained here based on the insulating effect of glass fibre reinforcement.

Latha Krishnan - One of the best experts on this subject based on the ideXlab platform.

  • Structure-property relationships in structural glass fibre reinforced composites from unsaturated polyester and Inherently Fire retardant phenolic resin matrix blends
    Composites Part B: Engineering, 2020
    Co-Authors: Baljinder K. Kandola, Latha Krishnan, John R. Ebdon, Peter Myler
    Abstract:

    Abstract The effects of matrices from co-cured blends of an unsaturated polyester (UP) with Inherently Fire-retardant and char-forming phenolic resoles (PH) on the mechanical and Fire performances of resultant glass fibre-reinforced composites have been investigated. Three different phenolic resoles with increasing order of compatibility with UP have been used. These are: (i) an ethanol soluble resin, (PH–S), (ii) an epoxy-functionalised resin (PH-Ep), and (iii) an allyl-functionalised resin (PH–Al). The mechanical properties of the composites increased with increasing compatibility with two resin types as might be expected, but not previously demonstrated. However, even with the least compatible resin (PH–S), the impact properties were unaffected and the flexural/tensile properties while reduced, were still acceptable for certain applications. Fire properties were however, in reverse order as previously observed in cast resin samples from these composites. Moreover, the reduction in flammability was less compared to those of the cast resin samples, reported previously, explained here based on the insulating effect of glass fibre reinforcement.

  • Blends of unsaturated polyester and phenolic resins for application as Fire-resistant matrices in fibre-reinforced composites. Part 2: Effects of resin structure, compatibility and composition on Fire performance
    Polymer Degradation and Stability, 2015
    Co-Authors: Baljinder K. Kandola, Latha Krishnan, Dario Deli, John R. Ebdon
    Abstract:

    The effects of co-curing blends of an unsaturated polyester (UP) with Inherently Fire-retardant and char-forming phenolic resoles (PH) on the thermal stability and Fire retardancy of the resulting resins have been investigated. To overcome the challenge of UP/PH incompatibility, arising from their different chemical structures and curing mechanisms (radical vs. condensation), different phenolic resoles have been used: ethanol-soluble, epoxyfunctionalized, and allyl-functionalized. A traditional water-based resole has also been used to give a reference non-compatible system. In Part 1 of this series of publications it was shown that the compatibility of the two resins increases with functionalization; the allyl– functionalized resole showing the best compatibility with UP. Limiting oxygen index measurements and cone calorimetry have shown that Fire performance of the functionalized PH resins and their blends with UP is worse than that from the unfunctionalized PH resin, but still significantly better than that of the UP. To understand this behaviour, thermal analyses coupled with infrared spectroscopy of volatile degradation products have been used on all resins and their blends, based on which, mechanisms of their decomposition and interactions are proposed, and the effects of these on flammability are discussed.

Dario Deli - One of the best experts on this subject based on the ideXlab platform.

  • Blends of unsaturated polyester and phenolic resins for application as Fire-resistant matrices in fibre-reinforced composites. Part 2: Effects of resin structure, compatibility and composition on Fire performance
    Polymer Degradation and Stability, 2015
    Co-Authors: Baljinder K. Kandola, Latha Krishnan, Dario Deli, John R. Ebdon
    Abstract:

    The effects of co-curing blends of an unsaturated polyester (UP) with Inherently Fire-retardant and char-forming phenolic resoles (PH) on the thermal stability and Fire retardancy of the resulting resins have been investigated. To overcome the challenge of UP/PH incompatibility, arising from their different chemical structures and curing mechanisms (radical vs. condensation), different phenolic resoles have been used: ethanol-soluble, epoxyfunctionalized, and allyl-functionalized. A traditional water-based resole has also been used to give a reference non-compatible system. In Part 1 of this series of publications it was shown that the compatibility of the two resins increases with functionalization; the allyl– functionalized resole showing the best compatibility with UP. Limiting oxygen index measurements and cone calorimetry have shown that Fire performance of the functionalized PH resins and their blends with UP is worse than that from the unfunctionalized PH resin, but still significantly better than that of the UP. To understand this behaviour, thermal analyses coupled with infrared spectroscopy of volatile degradation products have been used on all resins and their blends, based on which, mechanisms of their decomposition and interactions are proposed, and the effects of these on flammability are discussed.