Processing Characteristics Coupling, Compatibilizing Agents

Modifying Processing Characteristics Coupling, Compatibilizing Agents 

Organosilanes have long been used to improve the chemical bond between a variety of thermosetting resins and glass fibre and other silaceous surfaces, but they are essentially non-functional with organic-based fibres, such as graphite or aramid. 

In thermoplastics, the organometallics appear mainly to provide a catalytic support bed for in situ re-polymerization of the polymer matrix, which reflects itself in improved processing. A test on a 40% polycarbonate/glass compound showed improvements in mechanical properties, together with significant improvements in productivity. 

Titanium-derived coupling agents are unique in that, by reacting with free protons at the inorganic interface, organic monomolecular layers are formed on 

The use of organotitanate and/or organozirconate coupling agents, either independently or optionally together with other surface-reactive materials, such as organosilanes, also significantly improves the properties and processability of fibre-reinforced polymers, and their resistance to chemical attack and corrosion. 

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