COMPOSITE COMPRESSION MOLDED ARTICLE AND METHOD OF MANUFACTURE

摘要

A composite compression molded article is formed from a composition comprising: a) 60 to 97%, preferably 75 to 90%, by weight of rubber particles of a varied size distribution in the range of 5 to 30 mesh, b) 3 to 20%, preferably 5 to 12%, by weight, of a polymerizable material, said polymerizable material being non-reactive with said rubber particles, and polymerizing to form a matrix surrounding said rubber particles, c) 0 to 20%, preferably 5 to 13%, by weight, of reinforcing fibres, said fibres being non-reactive with said polymerizable material, d) 8-20%, preferably about 10%, by weight, of acrylic mixture. The molded composition is formed into a gasket or adjustment unit which absorbs mechanical vibrations transmitted through a surface component thereby protecting an adjacent concrete component against fracture caused by such vibrations; other articles may also be produced including manhole and catch basin adjustment units.