The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform

Horst-christian Langowski - One of the best experts on this subject based on the ideXlab platform.

  • Life cycle assessment study on resilient floor coverings
    The International Journal of Life Cycle Assessment, 1997
    Co-Authors: Albrecht Gunther, Horst-christian Langowski
    Abstract:

    Fourteen European producers of resilient floor coverings examined thirty-two objects of their products in a Life Cycle Assessment Study. The product groups were PVC, cushioned PVC, Polyolefin, Rubber and linoleum, with one reference example from textile and parquet. Important results include the following: • There is no material specific ranking for ‘best’ or ‘worst’ environmental performance. Differences within the material groups - depending on the individual formula - are larger than between the groups. • The introduction of material-specific recycling for used floorings as well as the use of recycled material in the flooring production could reduce environmental loads significantly. • The premature change of a flooring by the user may induce a major influence on the environmental performance of a flooring.

  • Life cycle assessment study on resilient floor coverings
    The International Journal of Life Cycle Assessment, 1997
    Co-Authors: Albrecht Gunther, Horst-christian Langowski
    Abstract:

    Fourteen European producers of resilient floor coverings examined thirty-two objects of their products in a Life Cycle Assessment Study. The product groups were PVC, cushioned PVC, Polyolefin, Rubber and linoleum, with one reference example from textile and parquet.

Milan Brandt - One of the best experts on this subject based on the ideXlab platform.

  • Creep and recovery behaviour of Polyolefin-Rubber nanocomposites developed for additive manufacturing
    Polymers, 2016
    Co-Authors: Fugen Daver, Mladenko Kajtaz, Milan Brandt, Robert A. Shanks
    Abstract:

    Nanocomposite application in automotive engineering materials is subject to continual stress fields together with recovery periods, under extremes of temperature variations. The aim is to prepare and characterize Polyolefin-Rubber nanocomposites developed for additive manufacturing in terms of their time-dependent deformation behaviour as revealed in creep-recovery experiments. The composites consisted of linear low density polyethylene and functionalized Rubber particles. Maleic anhydride compatibilizer grafted to polyethylene was used to enhance adhesion between the polyethylene and Rubber; and multi-walled carbon nanotubes were introduced to impart electrical conductivity. Various compositions of nanocomposites were tested under constant stress in creep and recovery. A four-element mechanistic Burger model was employed to model the creep phase of the composites, while a Weibull distribution function was employed to model the recovery phase of the composites. Finite element analysis using Abaqus enabled numerical modelling of the creep phase of the composites. Both analytical and numerical solutions were found to be consistent with the experimental results. Creep and recovery were dependent on: (i) composite composition; (ii) compatibilizers content; (iii) carbon nanotubes that formed a percolation network.

  • Conductive Polyolefin-Rubber nanocomposites with carbon nanotubes
    Composites Part A: Applied Science and Manufacturing, 2016
    Co-Authors: Fugen Daver, Edwin Baez, Robert A. Shanks, Milan Brandt
    Abstract:

    Polyolefin-Rubber composites of differing compositions were formed by melt mixing linear low density polyethylene (LLDPE) and functionalised Rubber particles (FRP) through interactions of pre-functionalised polymers in the interface. Following the incorporation of carbon nanotubes to the polymeric composites the nanocomposites filaments were extruded for fused deposition modelling (3D printing). The mechanical properties of the composites (tensile and flexural modulus, yield stress, tensile strength, elongation at break) were compared with respect to how the test specimens were made: compression moulding versus 3D printing. The results showed that increasing the Rubber content concentrated the nanotubes in the LLDPE phase forming electrically conductive pathways. The use of maleic anhydride as a compatibilizer improved the mechanical properties of the composites overall. The 3D printed specimens had lower mechanical properties than the compression moulded specimens, though they had the same electrical conductivity.

  • Characterization of nanocomposite filaments developed for additive manufacturing
    2016
    Co-Authors: Fugen Daver, Robert A. Shanks, Milan Brandt
    Abstract:

    The study aims to characterize innovative filaments in the form of Polyolefin-Rubber nanocomposites developed for additive manufacturing. Polyolefin-Rubber filaments were consisted of linear low density polyethylene and de-vulcanised, activated Rubber. A compatibilizer in the form of maleic anhydride grafted polyethylene was used to enhance adhesion between the two phases. Multi-walled carbon nanotubes were introduced for electrical conductivity. Various compositions of filament material were tested for mechanical properties, electrical conductivity and time-dependent deformation behavior as demonstrated in creep-recovery experiments. A four element model of Maxwell and Voigt-Kelvin was employed to analyze the creep behavior of the nanocomposites. Results were discussed in terms of the effect of (i) carbon nanotubes, (ii) compatibilizers and (iii) composition of each nanocomposites.

  • Conductive Polyolefin–Rubber nanocomposites with carbon nanotubes
    Composites Part A: Applied Science and Manufacturing, 2016
    Co-Authors: Fugen Daver, Edwin Baez, Robert A. Shanks, Milan Brandt
    Abstract:

    Abstract Polyolefin–Rubber composites of differing compositions were formed by melt mixing linear low density polyethylene (LLDPE) and functionalised Rubber particles (FRP) through interactions of pre-functionalised polymers in the interface. Following the incorporation of carbon nanotubes to the polymeric composites the nanocomposites filaments were extruded for fused deposition modelling (3D printing). The mechanical properties of the composites (tensile and flexural modulus, yield stress, tensile strength, elongation at break) were compared with respect to how the test specimens were made: compression moulding versus 3D printing. The results showed that increasing the Rubber content concentrated the nanotubes in the LLDPE phase forming electrically conductive pathways. The use of maleic anhydride as a compatibilizer improved the mechanical properties of the composites overall. The 3D printed specimens had lower mechanical properties than the compression moulded specimens, though they had the same electrical conductivity.

Robert A. Shanks - One of the best experts on this subject based on the ideXlab platform.

  • Creep and recovery behaviour of Polyolefin-Rubber nanocomposites developed for additive manufacturing
    Polymers, 2016
    Co-Authors: Fugen Daver, Mladenko Kajtaz, Milan Brandt, Robert A. Shanks
    Abstract:

    Nanocomposite application in automotive engineering materials is subject to continual stress fields together with recovery periods, under extremes of temperature variations. The aim is to prepare and characterize Polyolefin-Rubber nanocomposites developed for additive manufacturing in terms of their time-dependent deformation behaviour as revealed in creep-recovery experiments. The composites consisted of linear low density polyethylene and functionalized Rubber particles. Maleic anhydride compatibilizer grafted to polyethylene was used to enhance adhesion between the polyethylene and Rubber; and multi-walled carbon nanotubes were introduced to impart electrical conductivity. Various compositions of nanocomposites were tested under constant stress in creep and recovery. A four-element mechanistic Burger model was employed to model the creep phase of the composites, while a Weibull distribution function was employed to model the recovery phase of the composites. Finite element analysis using Abaqus enabled numerical modelling of the creep phase of the composites. Both analytical and numerical solutions were found to be consistent with the experimental results. Creep and recovery were dependent on: (i) composite composition; (ii) compatibilizers content; (iii) carbon nanotubes that formed a percolation network.

  • Conductive Polyolefin-Rubber nanocomposites with carbon nanotubes
    Composites Part A: Applied Science and Manufacturing, 2016
    Co-Authors: Fugen Daver, Edwin Baez, Robert A. Shanks, Milan Brandt
    Abstract:

    Polyolefin-Rubber composites of differing compositions were formed by melt mixing linear low density polyethylene (LLDPE) and functionalised Rubber particles (FRP) through interactions of pre-functionalised polymers in the interface. Following the incorporation of carbon nanotubes to the polymeric composites the nanocomposites filaments were extruded for fused deposition modelling (3D printing). The mechanical properties of the composites (tensile and flexural modulus, yield stress, tensile strength, elongation at break) were compared with respect to how the test specimens were made: compression moulding versus 3D printing. The results showed that increasing the Rubber content concentrated the nanotubes in the LLDPE phase forming electrically conductive pathways. The use of maleic anhydride as a compatibilizer improved the mechanical properties of the composites overall. The 3D printed specimens had lower mechanical properties than the compression moulded specimens, though they had the same electrical conductivity.

  • Characterization of nanocomposite filaments developed for additive manufacturing
    2016
    Co-Authors: Fugen Daver, Robert A. Shanks, Milan Brandt
    Abstract:

    The study aims to characterize innovative filaments in the form of Polyolefin-Rubber nanocomposites developed for additive manufacturing. Polyolefin-Rubber filaments were consisted of linear low density polyethylene and de-vulcanised, activated Rubber. A compatibilizer in the form of maleic anhydride grafted polyethylene was used to enhance adhesion between the two phases. Multi-walled carbon nanotubes were introduced for electrical conductivity. Various compositions of filament material were tested for mechanical properties, electrical conductivity and time-dependent deformation behavior as demonstrated in creep-recovery experiments. A four element model of Maxwell and Voigt-Kelvin was employed to analyze the creep behavior of the nanocomposites. Results were discussed in terms of the effect of (i) carbon nanotubes, (ii) compatibilizers and (iii) composition of each nanocomposites.

  • Conductive Polyolefin–Rubber nanocomposites with carbon nanotubes
    Composites Part A: Applied Science and Manufacturing, 2016
    Co-Authors: Fugen Daver, Edwin Baez, Robert A. Shanks, Milan Brandt
    Abstract:

    Abstract Polyolefin–Rubber composites of differing compositions were formed by melt mixing linear low density polyethylene (LLDPE) and functionalised Rubber particles (FRP) through interactions of pre-functionalised polymers in the interface. Following the incorporation of carbon nanotubes to the polymeric composites the nanocomposites filaments were extruded for fused deposition modelling (3D printing). The mechanical properties of the composites (tensile and flexural modulus, yield stress, tensile strength, elongation at break) were compared with respect to how the test specimens were made: compression moulding versus 3D printing. The results showed that increasing the Rubber content concentrated the nanotubes in the LLDPE phase forming electrically conductive pathways. The use of maleic anhydride as a compatibilizer improved the mechanical properties of the composites overall. The 3D printed specimens had lower mechanical properties than the compression moulded specimens, though they had the same electrical conductivity.

Fugen Daver - One of the best experts on this subject based on the ideXlab platform.

  • Creep and recovery behaviour of Polyolefin-Rubber nanocomposites developed for additive manufacturing
    Polymers, 2016
    Co-Authors: Fugen Daver, Mladenko Kajtaz, Milan Brandt, Robert A. Shanks
    Abstract:

    Nanocomposite application in automotive engineering materials is subject to continual stress fields together with recovery periods, under extremes of temperature variations. The aim is to prepare and characterize Polyolefin-Rubber nanocomposites developed for additive manufacturing in terms of their time-dependent deformation behaviour as revealed in creep-recovery experiments. The composites consisted of linear low density polyethylene and functionalized Rubber particles. Maleic anhydride compatibilizer grafted to polyethylene was used to enhance adhesion between the polyethylene and Rubber; and multi-walled carbon nanotubes were introduced to impart electrical conductivity. Various compositions of nanocomposites were tested under constant stress in creep and recovery. A four-element mechanistic Burger model was employed to model the creep phase of the composites, while a Weibull distribution function was employed to model the recovery phase of the composites. Finite element analysis using Abaqus enabled numerical modelling of the creep phase of the composites. Both analytical and numerical solutions were found to be consistent with the experimental results. Creep and recovery were dependent on: (i) composite composition; (ii) compatibilizers content; (iii) carbon nanotubes that formed a percolation network.

  • Conductive Polyolefin-Rubber nanocomposites with carbon nanotubes
    Composites Part A: Applied Science and Manufacturing, 2016
    Co-Authors: Fugen Daver, Edwin Baez, Robert A. Shanks, Milan Brandt
    Abstract:

    Polyolefin-Rubber composites of differing compositions were formed by melt mixing linear low density polyethylene (LLDPE) and functionalised Rubber particles (FRP) through interactions of pre-functionalised polymers in the interface. Following the incorporation of carbon nanotubes to the polymeric composites the nanocomposites filaments were extruded for fused deposition modelling (3D printing). The mechanical properties of the composites (tensile and flexural modulus, yield stress, tensile strength, elongation at break) were compared with respect to how the test specimens were made: compression moulding versus 3D printing. The results showed that increasing the Rubber content concentrated the nanotubes in the LLDPE phase forming electrically conductive pathways. The use of maleic anhydride as a compatibilizer improved the mechanical properties of the composites overall. The 3D printed specimens had lower mechanical properties than the compression moulded specimens, though they had the same electrical conductivity.

  • Characterization of nanocomposite filaments developed for additive manufacturing
    2016
    Co-Authors: Fugen Daver, Robert A. Shanks, Milan Brandt
    Abstract:

    The study aims to characterize innovative filaments in the form of Polyolefin-Rubber nanocomposites developed for additive manufacturing. Polyolefin-Rubber filaments were consisted of linear low density polyethylene and de-vulcanised, activated Rubber. A compatibilizer in the form of maleic anhydride grafted polyethylene was used to enhance adhesion between the two phases. Multi-walled carbon nanotubes were introduced for electrical conductivity. Various compositions of filament material were tested for mechanical properties, electrical conductivity and time-dependent deformation behavior as demonstrated in creep-recovery experiments. A four element model of Maxwell and Voigt-Kelvin was employed to analyze the creep behavior of the nanocomposites. Results were discussed in terms of the effect of (i) carbon nanotubes, (ii) compatibilizers and (iii) composition of each nanocomposites.

  • Conductive Polyolefin–Rubber nanocomposites with carbon nanotubes
    Composites Part A: Applied Science and Manufacturing, 2016
    Co-Authors: Fugen Daver, Edwin Baez, Robert A. Shanks, Milan Brandt
    Abstract:

    Abstract Polyolefin–Rubber composites of differing compositions were formed by melt mixing linear low density polyethylene (LLDPE) and functionalised Rubber particles (FRP) through interactions of pre-functionalised polymers in the interface. Following the incorporation of carbon nanotubes to the polymeric composites the nanocomposites filaments were extruded for fused deposition modelling (3D printing). The mechanical properties of the composites (tensile and flexural modulus, yield stress, tensile strength, elongation at break) were compared with respect to how the test specimens were made: compression moulding versus 3D printing. The results showed that increasing the Rubber content concentrated the nanotubes in the LLDPE phase forming electrically conductive pathways. The use of maleic anhydride as a compatibilizer improved the mechanical properties of the composites overall. The 3D printed specimens had lower mechanical properties than the compression moulded specimens, though they had the same electrical conductivity.

Albrecht Gunther - One of the best experts on this subject based on the ideXlab platform.

  • Life cycle assessment study on resilient floor coverings
    The International Journal of Life Cycle Assessment, 1997
    Co-Authors: Albrecht Gunther, Horst-christian Langowski
    Abstract:

    Fourteen European producers of resilient floor coverings examined thirty-two objects of their products in a Life Cycle Assessment Study. The product groups were PVC, cushioned PVC, Polyolefin, Rubber and linoleum, with one reference example from textile and parquet. Important results include the following: • There is no material specific ranking for ‘best’ or ‘worst’ environmental performance. Differences within the material groups - depending on the individual formula - are larger than between the groups. • The introduction of material-specific recycling for used floorings as well as the use of recycled material in the flooring production could reduce environmental loads significantly. • The premature change of a flooring by the user may induce a major influence on the environmental performance of a flooring.

  • Life cycle assessment study on resilient floor coverings
    The International Journal of Life Cycle Assessment, 1997
    Co-Authors: Albrecht Gunther, Horst-christian Langowski
    Abstract:

    Fourteen European producers of resilient floor coverings examined thirty-two objects of their products in a Life Cycle Assessment Study. The product groups were PVC, cushioned PVC, Polyolefin, Rubber and linoleum, with one reference example from textile and parquet.