Styrene-butadiene rubber (SBR) ndiyo inonyanya kushandiswa rabha yekugadzira uye inogona kugadzirwa necopolymerization yebutadiene (75%) uye styrene (25%) uchishandisa mahara radical initiators.A random copolymer inowanikwa.Iyo microstructure yepolymer ndeye 60% -68% trans, 14% -19% cis, uye 17% -21% 1,2-.Nzira dzakanyorova dzinowanzo shandiswa kuratidza polybutadiene polymers uye copolymers.Solid-state NMR inopa nzira iri nyore yekuona iyo polymer microstructure.
Parizvino, yakawanda SBR inogadzirwa nekubatanidza iwo maviri monomers ane anionic kana coordination catalysts.Iyo yakaumbwa copolymer ine zvirinani zvemichina uye yakamanikana mamorekuru uremu kugovera.A random copolymer ane akaodha kutevedzana anogona zvakare kuitwa mukugadzirisa uchishandisa butyl-lithium, chero iwo maviri monomers achichajwa zvishoma nezvishoma.Block copolymers yebutadiene uye styrene inogona kugadzirwa mumhinduro uchishandisa coordination kana anionic catalysts.Butadiene polymerizes kutanga kusvika yapera, ipapo styrene inotanga polymerize.SBR inogadzirwa ne coordination catalysts ine simba rekusimba riri nani pane rinogadzirwa nemahara radical ekutanga.
Iko kushandiswa kukuru kweSBR ndeyekugadzira matayi.Zvimwe zvinoshandiswa zvinosanganisira shangu, machira, kapeti inotsigira, uye zvinonamira.
Feature
Kupfeka kuramba, kuramba kuchembera, kuramba mvura uye kusimba kwemhepo zviri nani pane rabha rechisikigo, nepo kunamatira, elasticity uye deformation calorific kukosha kwakaderera pane yakasikwa rabha.Styrene butadiene rabha ine yakanakisa yakazara zvivakwa.Ndiyo yakakura kwazvo yakasiyana-siyana yekugadzira rabha, uye inobuda inoita 60% yerabha yekugadzira.Inenge 87% ye styrene butadiene rubber kugadzira simba munyika inoshandisa emulsion polymerization.Kazhinji kutaura, styrene butadiene rabha rinonyanya kureva emulsion polymerized styrene butadiene rabha.Emulsion polymerized styrene butadiene rabha inosanganisirawo tembiricha yepamusoro emulsion polymerization yebutadiene styrene uye yakaderera tembiricha emulsion polymerization yekutonhora butadiene.
Shandisa
Inoshandiswa kugadzira siponji rabha, inregnated faibha uye jira, rinoshandiswawo seanonamira, kupeta nezvimwe.
Nguva yekutumira: Mar-10-2022