发明授权
US4831067A Process for the manufacture of frictional elements and frictional elements produced thereby 失效
用于制造由此产生的摩擦元件和摩擦元件的方法

Process for the manufacture of frictional elements and frictional
elements produced thereby
摘要:
A method for the manufacture of shaped frictional elements is provided. The method comprises mixing a first portion of a frictional filler with from 5% to 30% of certain liquid, alkaline, phenol-formaldehyde resins; mixing a second portion of the same or a different frictional filler with a liquid ester curing catalyst for the phenyl-formaldehyde resin; intimately mixing the first and second portions; and allowing the resultant mixture to cure in a mould. A composition comprising a frictional filler, the above resin, and a curing catalyst is also provided. The disclosed method is quick and economical and is carried out at room temperature without the hazards and inconveniences associated with heated moulds.
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