news Analyzing the effect of 4,4′-diaminodiphenylmethane on the properties of polyurea elastomers Analyzing the Effect of 4,4′-Diaminodiphenylmethane (MDA) on the Properties of Polyurea Elasto... 05/09214′-diaminodiphenylmethane on the properties of polyurea elastomers Analyzing the effect of 4