1.adwene .
Rɔba a wɔde ka ho no kyerɛ nnuru a ɛyɛ fɛ a wɔde ka ho wɔ ɔkwan a wɔfa so di abɔde mu rɔba anaa rɔba a wɔde yɛ rɔba ho dwuma ho dwuma, a wɔde di dwuma de ma rɔba nneɛma yɛ adwuma, ɛma ɛyɛ adwuma sɛ rɔba nneɛma no som na ɛma rɔba nneɛma a wɔde yɛ adwuma no yɛ adwuma yiye{0}} rɔba yɛ ade a ɛho hia yiye wɔ ɔman no mu nneɛma a wɔyɛ mu, na rɔba a wɔde ka ho no yɛ ade a ɛho hia a ɛyɛ fɛ wɔ rɔba nnwuma mu{1}}
2.dwumadi .
(1)Sɛnea ɛbɛyɛ a wɔbɛma rɔba nneɛma ho dwumadie ne ne di so no atu mpɔn.
(2)Mmea a wɔde rɔba ayɛ no yiye.
(3)Ɛtew ahoɔden a wɔde di dwuma ne nneɛma a wɔyɛ ho ka so, na ebetumi asiw onyin a ɛbɛsɛe no ano, atrɛw ɔsom nkwa mu.
3.mfiase .
(1)1839 - Amerika Goodyear huu nkɛntɛnso a sulfur nya wɔ vulcanization a ɛwɔ rɔba mu. so far, sulfur da so ara yɛ vulcanizing agent titiriw ma rɔba ahorow pii, nanso sɛnea wɔyɛ wɔn ade wɔ sulphur ne rɔba ntam no yɛ brɛoo sɛnea ɛbɛyɛ a ebetumi adi nneɛma afoforo a wɔhwehwɛ no ho dwuma.
(2)1844 - inorganic vulcanization accelerator no huu. a wɔde ka ho titiriw lead carbonate sɛ inorganic accelerator wɔ Goodyear patent a wɔde baa inorganic accelerator bere mu wɔ afeha fã{3}} Amerika nnuruyɛfo huu sɛ ingortoa a wɔaka abom no ne sulfur bere a wɔde curing bere no{4{4{4{4{4{4{4} Accelerator, nanso ɛsan nso wɔ ahoɔden a ɛba fam, vulcanization adwumayɛ a enye ne ɔhaw afoforo.
(3)1908 - organic vulcanizing accelerator na wɔyɛɛ, na wɔyɛɛ vulcanizing agent wɔ 1914. akyi bɛboro mfe 80 nhwehwɛmu, kosii 1920s ~ 1930s, a mfitiase ahorow ahorow a vulcanization accelerator a ɛyɛ accelerator MPT(M) a wɔde ahyɛ mu, a ɛne sulfomide derivativess ne p ititivess Nhyehyɛe.
(4)1952 - China rɔba aboafo nnwuma no fii ase, na edii anim wɔ nneɛma a ɛko tia onyin A ne D mu, na M{3}} a ɛyɛ ntɛmntɛm no, ɛwom sɛ afe afe nneɛma a wonya no yɛ tɔn 38 pɛ de, nanso ɛde nea ɛde ne ho to nneɛma a wɔde fi amannɔne ba so.