Process for pultruding fiber reinforced phenolic resin products

Details Process for pultruding fiber reinforced phenolic resin products Process for pultruding fiber reinforced phenolic resin products

1988-03-07

1989-10-10

Lusignan, Michael

Coating processes

Immersion or partial immersion

Running lengths

156180, 264137, 4274346, B05D 118, B29G 200, B29G 700

Patent

active

048731285

ABSTRACT:
The present invention is a process for pultruding fiber reinforced phenolic resin products, in which the phenolic resin normally has a viscosity ranging from 3,000 to 5,000 cps at 25.degree. C. and is heated to maintain a viscosity ranging from 800 to 2,000 cps during the impregnating step. A die having a temperature profile which is particularly suitable for use in the present process is also disclosed, which has substantially three different heating temperatures along the pultrusion direction. Furthermore, a postcuring treatment for improving the mechanical and physical properties of the pultruded products is also disclosed in the present invention.

REFERENCES:
patent: 4305770 (1981-12-01), Stiles
patent: 4419400 (1983-12-01), Hindersinn

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