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Patent Searching and Data


Title:
PHENOL RESIN MOLDING MATERIAL AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JPH09174548
Kind Code:
A
Abstract:

To obtain a phenol resin molding material enhanced in static strength without damaging impact strength.

A phenolic resin molding material consists of 25-45 pts.wt. of a phenolic resin, 45-60 pts.wt. of chopped strand glass fibers with a length of 0.5-12mm and 3-10 pts.wt. of NBR. In the production of the phenolic resin molding material, the phenol resin and NBR are preliminarily kneaded on a hot roll and cooled and ground to obtain a mixture and glass fibers, a curing aid, a release agent and other additives are added to and mixed with the mixture and, further, if necessary, 1-5 pts.wt. of a solvent with a b.p. of 60°C or lower for the phenolic resin is added to the total amt. of the mixture and the whole is uniformly mixed and granulated by a stirrer (Henschel mixer) having a heating.cooling mechanism and high speed rotary blades to obtain a ship-like phenolic resin.glass fiber mixture which is, in turn, pelletized by a single-screw or twin-screw extrusion granulator of L/D=1-4.


Inventors:
NAKAO SHINICHI
Application Number:
JP34024995A
Publication Date:
July 08, 1997
Filing Date:
December 27, 1995
Export Citation:
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Assignee:
SUMITOMO BAKELITE CO
International Classes:
B29B11/16; B29B7/00; B29B7/74; B29B7/88; B29B9/06; C08K7/14; C08L9/02; C08L21/00; C08L61/04; (IPC1-7): B29B11/16; B29B7/74; B29B9/06; C08K7/14; C08L9/02; C08L61/04