CANZ Glossary of Terms

Stickiness.

A surface that is not sticky after cure.

A narrow width reinforcing fabric or mat.

Abbreviation for tertiary-butyl perbenzoate used as catalyst in high speed, heated cures of polyester resin systems.

Abbreviation for tertiary-butyl peroctoate used as catalyst in high speed, heated cures of polyester resin systems.

An engineering term referring to the amount of stretch a sample experiences during tensile strain. ASTM D-638.

Maximum stress sustained by composite specimen before it fails in tension test. ASTM D-638.

Any type of sheet material made from fibres that are woven, knitted, knotted, stitched or bonded together.

Measures dimensional change.

Ability to transfer heat.

Temperature changes Rapidly, causing large thermal stresses.

Occurs when change in temperature causes materials to expand and contract at different rates. Can form within and between layers of laminate as well as between laminate and steel frame.

Crazing or cracking of some thermoset or thermoplastic resins from over-exposure to elevated temperatures or cyclic temperature variations.

Assembly used to sense and record temperature.

Polymers that can be repeatedly softened when heated, hardened when cooled. Thermoplastics such as polymers and copolymers of acrylics, PET, polycarbonates, nylons, fluorocarbons and styrene are fast becoming important engineering materials.

Materials that will undergo or have undergone chemical reaction, leading to relatively infusible state. Typical materials are aminos (melamine and urea), unsaturated polyesters, alkyds, epoxies and phenolics; not reformable.

Condition in which material possesses resistance to flow until it is agitated (mixed, pumped, or sprayed).

Indication of sag resistance determined by dividing low shear viscosity by high shear viscosity.

Mould, either one or two-sided, and either open or closed, in or upon which composite material is placed to make part, also “mould”.

Special polyesters designed for mould making.

Measure of ability of material to absorb energy.

Permits a percentage of light to pass but not optically clear like a window glass.