Title:
PRODUCITON OF FRICTION MATERIAL
Document Type and Number:
Japanese Patent JPH05331297
Kind Code:
A
Abstract:
PURPOSE:To obtain a friction material for use in automobiles, etc., having high burst strength and stable frictional characteristics even under high- temperature and high-load conditions, by impregnating or coating a friction material comprising a fibrous base, friction regulator and binder with an inorganic binder. CONSTITUTION:(A) Inorganic powder, a mixture of barium sulfate, talc, calcium carbonate and calcium silicate fibers, is incorporated with (B) a methylated melamine resin followed by heating to effect curing. The resulting cured product is ground and mixed with iron oxide and copper powder, thus preparing a friction regulator. This friction regulator is added to a methyl ethyl ketone solution of a binder such as phenolic resin into a slurry, which is then incorporated with a base consisting of a fibrous material such as glass fibers followed by kneading into a homogeneous admixture. Thence, the admixture is filled in a mold followed by hot pressing to produce a form. This form is then impregnated or coated with an inorganic binder consisting of an aluminum phosphate- contg. aqueous solution followed by raising temperature successively to 240 deg.C to carry out postcuring, thus obtaining the objective friction material excellent in frictional characteristics at high temperatures.
Inventors:
SAKATA TOICHI
TASHIRO AKITSUGU
TASHIRO AKITSUGU
Application Number:
JP14188492A
Publication Date:
December 14, 1993
Filing Date:
June 03, 1992
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD
International Classes:
B29B11/16; B29B15/08; C08J5/04; C08J5/14; C09J1/00; C09K3/14; B29K105/06; (IPC1-7): C08J5/14; B29B11/16; B29B15/08; C08J5/04; C09J1/00; C09K3/14
Attorney, Agent or Firm:
Kunihiko Wakabayashi