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Fiberset Incorporated's Glossary of Composite Terms
Thank you for visiting our glossary of terms. Feel free to link your site to this page as well as email us with any new terms you feel may be important to include. Clicking on the |
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Fiberset Incorporated's Glossary of Composite Terms
Thank you for visiting our glossary of terms. Feel free to link your site to this page as well as email us with any new terms you feel may be important to include. Clicking on the |
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EASE OF ROLLOUT
The relative facility with which a sprayed admixture of chopped glass and resin can be compacted by rolling.
E-GLASS
"Electrical glass" A borosilicate glass; the type most used for glass fibers for reinforced plastics; -suitable for electrical laminates because of its high resistivity. (Also called 'electrical glass.')
EJECTION / DEMOLDING
The process of removing a molding from the molding impression; by mechanical means, by hand, or by the use of compressed air.
EJECTION PLATE
A metal plate used to operate ejector pins; designed to apply a uniform pressure to them in the process of ejection.
ELASTIC DEFORMATION
The part of the total strain in a material under stress that recovers upon removal of the stress.
ELASTIC LIMIT
The greatest stress which a material is capable of sustaining without permanent strain remaining upon the complete release of the stress. A material is said to have passed its elastic limit when the load is sufficient to initiate plastic, or non-recoverable, deformation.
ELASTICITY
The property of materials to recover their original size and shape after deformation.
ELASTOMER
A polymeric material which has a high modulus of elasticity and toughness. Urethane elastomer is an example.
ELONGATION
Standard measure for the amount a sample can stretch as a percentage of original length before it fails or breaks.
ELONGATION AT BREAK
Elongation recorded at the moment of rupture of the specimen, often expressed as a percentage of the original length.
ENCAPSULATING
Enclosing an article in a closed envelope of plastics by immersion. Milled fibers or short chopped strands are often poured with the catalyzed resin into open molds for casting electrical components.
END
A strand of roving consisting of a given number of filaments gathered together.
END COUNT
An exact number of ends supplied on a ball or roving.
EPOXY PLASTICS
Plastics based on resins made by the reaction of epoxides or oxiranes with other materials such as amines, alcohols, phenols, carboxylic acids, acid anhydrides and unsaturated compounds.
EPOXY RESIN
Resins which may be of widely different structures but are characterized by the presence of the epoxy group. (The epoxy or epoxide group is usually present as a glycidyl ether, glycidylamine, or as part of an aliphatic ring system. (The aromatic type epoxy resins are normally used in composites.
EXOTHERM
The liberation or evolution of heat during the curing of a plastic product.
EXOTHERMIC HEAT
Internally developed heat accompanying a chemical reaction.
EXTENDERS
Low cost materials used to dilute or extend high cost resins without much lessening of properties.
EXTENSOMETER
A device for measuring linear strain.
EXTRUSION
A process normally used with a compound. the compound is forced through a die, producing a profiled shape.
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