... system in rubber process Rubber vulcanizing agent PDM(HVA-2) Chemical name: N,N'-m-phenyl dimaleimide Molecular formula:C14H8N2O4Molecular ... (IR), butyl rubber(IIR), bromobutyl rubber, acrylic rubber(ACM), silicon rubber(SI) and other rubbers, PDM can effectively improve correlation ... the adhesion strength between gross rubber and tire cord or metal.PDM is a kind of sulfurless vulcanizing agent. When ...