Inkcazo ye-asphalt elungisiweyo ye-SBS kunye nembali yophuhliso
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Inkcazo ye-asphalt elungisiweyo ye-SBS kunye nembali yophuhliso
Ixesha lokukhupha:2024-06-20
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I-asphalt elungisiweyo ye-SBS isebenzisa isiseko se-asphalt njengento ekrwada, yongeza inxalenye ethile yesilungisi se-SBS, kwaye isebenzisa ukucheba, ukuvuselela kunye nezinye iindlela zokusasaza ngokulinganayo i-SBS kwi-asphalt. Ngexesha elifanayo, inxalenye ethile ye-stabilizer ekhethekileyo yongezwa ukwenza umxube we-SBS. izinto eziphathekayo, usebenzisa iimpawu ezintle ze-SBS ukuguqula i-asphalt.
Ukusetyenziswa kwezilungisi ukuguqula iasphalt kunembali ende kumazwe ngamazwe. Embindini wenkulungwane ye-19, indlela ye-vulcanization yayisetyenziselwa ukunciphisa ukungena kwe-asphalt kunye nokwandisa indawo yokuthambisa. Ukuphuhliswa kweasphalt elungisiweyo kule minyaka ingama-50 idlulileyo sele kudlule izigaba ezine.
(1) 1950-1960, xuba ngokuthe ngqo umgubo werabha okanye i-latex kwi-asphalt, xuba ngokulinganayo kwaye usebenzise;
(2) Ukususela kwi-1960 ukuya kwi-1970, i-raber ye-styrene-butadiene eyenziwe yaxutywa kwaye isetyenziswe kwi-site ngendlela ye-latex ngokulinganayo;
(3) Ukususela kwi-1971 ukuya kwi-1988, ukongeza ekusebenzeni okuqhubekayo kwerabha yokwenziwa, iireyini ze-thermoplastic zazisetyenziswa ngokubanzi;
(4) Ukususela kwi-1988, i-SBS iye ngokuthe ngcembe ibe yinto ehamba phambili eguqulwayo.
Imbali emfutshane yophuhliso lwe-asphalt elungisiweyo ye-SBS:
★Imveliso yehlabathi yemveliso yeemveliso ze-SBS yaqala ngeminyaka yoo-1960.
★Ngo-1963, i-American Philips Petroleum Company yasebenzisa indlela yokudibanisa ukuvelisa i-copolymer ye-SBS ecacileyo okokuqala, enegama lorhwebo iSolprene.
★Ngo-1965, iNkampani ye-American Shell yasebenzisa ubuchwepheshe be-ion polymerization engalunganga kunye nendlela yokutya elandelelanisiweyo enamanyathelo amathathu ukuphuhlisa imveliso efanayo kunye nokuphumeza imveliso yemizi-mveliso, enegama lokurhweba elithi Kraton D.
★Ngo-1967, inkampani yaseDatshi iPhilips yenza inkwenkwezi (okanye iradial) imveliso ye-SBS.
★Ngomnyaka ka-1973, uPhilips waphehlelela inkwenkwezi yemveliso ye-SBS.
★Ngo-1980, i-Firestone Company yasungula imveliso ye-SBS ebizwa ngokuba yi-Streon. Umxholo obophelelayo we-styrene wemveliso wawungama-43%. Imveliso yayinesalathisi esiphezulu sokunyibilika kwaye yayisetyenziselwa ukuguqulwa kweplastiki kunye nokunamathiswa okutshisa okutshisa. Emva koko, iNkampani yaseJapan yase-Asahi Kasei, iNkampani ye-Anic yase-Italiya, iNkampani yase-Petrochim yaseBelgium, njl.njl. nazo ziphuhlise ngokulandelelana iimveliso ze-SBS.
★Emva kokungena kwiminyaka yee-1990, kunye nokwandiswa okuqhubekayo kwezicelo ze-SBS, imveliso ye-SBS yehlabathi iphuhliswe ngokukhawuleza.
Ukusukela ngo-1990, xa isityalo serabha yokwenziwa kweBaling Petrochemical Company eYueyang, kwiPhondo laseHunan lakha isixhobo sokuqala sokuvelisa i-SBS yelizwe kunye nesiphumo sonyaka seetoni ezili-10,000 sisebenzisa itekhnoloji yaseBeijing Yanshan Petrochemical Company Research Institute, amandla okuvelisa e-SBS eTshayina aye akhula ngokuthe ngcembe. .