摘要 |
Treated rubber is made from ground rubber and a polyurethane resin. Products made by mixing treated rubber with additional polyurethane resin, molding and curing the polyurethane have higher tensile strengths and/or elongations than similar products made from untreated rubber. The method using treated rubber uses less polyurethan e binder to produce products of equivalent strengths. The molding time is also reduced because of the reduced amount of polyurethane binder used. |