Abstract: Composition and process for the preparation of high temperature stable continuous glass fibers with an upper temperature use limit of 2300.degree. F. are provided. The compositional formulation, in mole percent, is 62-85% SiO.sub.2, 10-20% Al.sub.2 O.sub.3, 5-15% MgO, 0.5-5% TiO.sub.x, and 0-5% ZrO.sub.2. The continuous fibers are prepared by an economical direct melt method, and demonstrate high tensile strength, high Young's modulus, and low linear thermal shrinkage characteristics. Friction pads containing these high temperature stable continuous glass fibers are also provided.
Abstract: A sorbent article comprises a sorbent layer having first and second major surfaces and a texturized polymeric skin layer secured to the first major surface of the sorbent layer. The article has a stiffness of about 200 N/g.cm.sup.-2 or less. An article of this construction has excellent sorptive and non-slip properties, making it well suited for use on floors and other work surfaces. Wet kinetic coefficients of friction of 0.4 and greater can be demonstrated by the inventive articles. The article improves the safety of persons who need to stand, walk, or otherwise safely function on floors or other surfaces that are susceptible to wet conditions.
Type:
Grant
Filed:
October 28, 1996
Date of Patent:
March 31, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: The present invention relates to a fibrous base material comprising less fibrillated aramid fibers, synthetic graphite and at least one filler material, and a non-asbestos friction material produced therefrom. In certain embodiments, the fibrous base material is impregnated with a phenolic or phenolic-base resin material, including, for example, a mixture of a phenolic resin and a silicone resin.
Abstract: The present invention relates to a fibrous base material comprising fibrillated aramid fibers, cellulose fibers, and at least one type of filler material and a non-asbestos friction material produced therefrom by impregnating the fibrous base material with a phenolic or modified phenolic resin. The friction material exhibits good anti-shuddering properties and is especially useful in continuous slip clutch applications.
Abstract: The present invention provides a wet-friction material capable of extensive continuous sliding performance at very low slipping speeds without inducing shutter, squawk or chuggle. The present invention includes a friction material having a woven carbon fabric to which a resin, preferably a phenolic resin, has been applied. The phenolic resin is entirely contained within the strand and the strands are intentionally incompletely filled. This combination provides for maximum open area texture for gross flow and drainage, microporosity or microtexture for the destruction of any potential hydrodynamic films and at the same time provides an extremely strong and durable structural composite. The friction material may include an over and under stacking and integration of the less than completely filled strands which is more than adequate for even the severest loading applications.