Effect of Silane Treatment on SiC Particles Used as Reinforcement in Epoxy Resins Articles uri icon

publication date

  • September 2009

start page

  • 287

end page

  • 301

issue

  • 6

volume

  • 85

International Standard Serial Number (ISSN)

  • 0021-8464

Electronic International Standard Serial Number (EISSN)

  • 1545-5823

abstract

  • Silicon carbide (SiC) is used as reinforcement in polymeric materials due to its high resistance to abrasive wear and hardness. However, sometimes the lack of anchoring between the SiC particles and the
    polymer produces some negative effects. The unbonding particles can act as crack
    initiators. They also can increase the wear erosion. The aim of this work is to
    improve the adhesion between the epoxy resin and the SiC particles using a
    silane coupling agent to coat the ceramic particles. In this study, a room
    temperature curing two&-component epoxy was used. SiC particles with a mean
    diameter of 10 ┬Ám were added to the epoxy resin in proportions of 6 and 12% by
    weight. The organosilane used was gamma-glicidoxypropyltrimethoxysilane (gamma-GPS).
    Strength was evaluated on bulk specimens by means of three-point bending test
    and hardness Shore D measurements. A pin on disk test was carried out to
    evaluate wear. Wear tracks as well as fracture surfaces of the materials were
    studied by scanning electron microscopy (SEM). Aluminium and steel specimens
    were also coated with the SiC/epoxy composites to evaluate its effectiveness as
    a wear-resistance coating. Pin on disk tests were done to study the SiC/epoxy
    composites' wear behavior.