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Thermally stable liquid crystalline thermosets based on aromatic copolyesters: Preparation and properties

✍ Scribed by Dan Frich; James Economy

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
222 KB
Volume
35
Category
Article
ISSN
0887-624X

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✦ Synopsis

The synthesis and physical properties are described for a thermally stable liquid crystalline (LC) thermoset based on all aromatic ester units. The persistence of the liquid crystalline phase throughout the curing process was monitored with polarizing optical microscopy. The applicability of these new liquid crystalline thermosets has been evaluated for use as an adhesive for bonding metals, namely titanium. The failure of the adhesive bonds always occurs within the polymer; thus it can be inferred that bonding at the polymer-metal interface is very good. This strong interfacial bonding is attributed to low cure shrinkage and CTE matching of the underlying substrate by the LC resins. The cohesive properties and strength of the cured resin can be greatly enhanced by the addition of filler materials.

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