摘要:
An asbestos-free gasketing composition comprising (a) a rubber component, (b) a non-asbestos fiber, (c) an oil-absorbing agent and (d) a filler useful for forming gasketing profiles such as a joint sheet, a beater sheet, a sheet containing a perforated metal core plate and the like. A gasket obtained therefrom which contains the composition has excellent oil sealing properties while exhibiting satisfactory strength.
摘要:
A gasket sheet obtained by the milling and vulcanization of 50-85% by weight of a fibrous material, 10-50% by weight of a rubber material and at least 1-23% by weight of a water-insoluble and -swelling substance. The gasket sheet may be a one layer or a three layer sheet.
摘要:
Sealants in strip or ribbon form consisting of finely divided particulate filler such as calcium carbonate, fibrous material such as fiberized newsprint or asbestos and a liquid vehicle such as alkyd resins, having hardness penetration values in certain ranges at particular temperatures which remain pliable and adequately soft over long periods of time.
摘要:
A compressed non-asbestos sheet which comprises at least two types of fibers selected from the groups consisting of inorganic fibers other than asbestos and/or organic fibers, natural rubber and/or synthetic rubber, rubber chemicals, and fillers. The group of inorganic fibers is divided into two subgroups, one subgroup consisting of glass fibers, ceramic fibers, etc., and the other subgroup consisting of carbon and metal fibers. The group of organic fibers consists of synthesized and naturally occurring polymeric fibers including polyamide-based fibers, etc. The compressed non-asbestos sheet includes at least one of the combinations of the first and second subgroups, the first subgroup and the group of organic fibers, the second subgroup and the group of organic fibers, the fibers belonging to the second subgroup, and the organic fibers.
摘要:
Disclosed is a new and improved sealant and cement asphalt composition that is asbestos-free. The asbestos-free asphalt composition comprises about 40 to about 70 weight percent asphalt, about 5 to about 40 weight percent mineral filler, about 2 to about 10 weight percent cellulose fibers and about 2 to about 20 weight percent of a water-containing material such as an acrylic latex emulsion, asphalt emulsion or aqueous surfactant solution.
摘要:
Non-asbestos flexible sheet material suitable for use in gaskets for the cylinder head of an internal combustion engine is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight:______________________________________ ball clay 25-44% calcium silicate of high specific 15-40% surface area cellulose fibres 3-15% organic polymer binder 5-15% fibrillated poly (aromatic amide) 1-15% fibres ______________________________________
摘要:
An asbestos-free sealant composition comprises cotton fiber, amorphous polypropylene and butyl rubber incorporated into a base stock comprising an inorganic filler and a suitable binder.