SEBS (Styrene Ethylene Butylene Styrene)
STYRENE-ETHYLENE-BUTYLENE-STYRENE THERMOPLASTIC ELASTOMER (SEBS)
DUKIYA DA APPLICATIONS
Styrene-etylene-butylene-styrene, wanda kuma aka sani da SEBS, wani muhimmin thermoplastic elastomer (TPE) ne wanda ke nuna hali kamar roba ba tare da jurewa ba.An samar da shi ta hanyar wani ɓangare da kuma zaɓin hydrogenating na styrene-butadiene-styrene copolymer (SBS) wanda ke inganta kwanciyar hankali na thermal, yanayin yanayi da juriya na mai, kuma ya sa SEBS tururi sterilisable. Duk da haka, hydrogenation kuma yana rage aikin injiniya kuma yana ƙara yawan farashin polymer. .
SEBS elastomers galibi ana haɗa su tare da wasu polymers don haɓaka aikinsu.Ana amfani da su azaman masu gyara tasiri don injiniyoyin thermoplastics kuma azaman masu sassauƙa / tougheners don bayyanannen polypropylene (PP).Sau da yawa ana ƙara mai da filaye zuwa ƙananan farashi da / ko don ƙara gyara kaddarorin.Muhimmiyar aikace-aikace sun haɗa da mannen matsi mai zafi-narke, kayan wasan yara, tafin ƙafar ƙafa, da samfuran bitumen da aka gyaggyarawa TPE don shimfidar hanya da aikace-aikacen rufi.
Styrenics, ko styrenic block copolymers sune mafi yawan amfani da duk TPE's.Suna haɗuwa da kyau tare da sauran kayan da kuma masu cikawa da masu gyarawa.SEBS (styrene-ethylene/butylene-styrene) yana da ƙayyadaddun yankuna masu wuya da taushi a cikin ɗaiɗaikun nau'ikan polymer.Ƙarshen tubalan su ne crystalline styrene yayin da tsakiyar-blocs sune tubalan ethylene-butylene mai laushi.A yanayin zafi mafi girma waɗannan kayan suna yin laushi kuma su zama ruwa.Lokacin da aka sanyaya, igiyoyin suna haɗuwa a ƙarshen styrene-blocks suna yin hanyar haɗin kai ta jiki da kuma samar da roba kamar elasticity.Bayyanawa da amincewar FDA sun sanya SEBS kyakkyawan zaɓi don aikace-aikace masu tsayi.
SEBS na iya inganta aiki a cikin matsi-matsi da sauran aikace-aikacen m.Wasu daga cikin aikace-aikacen gama-gari sun haɗa da kaset iri-iri, tambari, filasta, mannen gini, rigunan likitanci, danti, mayafi da fenti mai alamar hanya.
Ana iya haɗa SEBS don samar da kayan da ke inganta kama, ji, kamanni da dacewa na aikace-aikace daban-daban.Wasanni da nishadi, kayan wasan yara, tsafta, marufi, motoci, da gyare-gyare da kayan fasaha wasu misalan gama gari ne.
Ana iya amfani da SEBS a hade tare da filaye daban-daban.Masu haɗawa za su ƙara waɗannan filaye idan an haɓaka sha mai, rage farashi, ingantacciyar ji, ko ƙarin daidaitawa ana buƙatar sama da tsarkakakken SEBS.
Wataƙila mafi yawan filler ga SEBS shine mai.Za a zaɓi waɗannan mai dangane da takamaiman buƙatun aikace-aikacen.Ƙara man ƙanshi yana laushi tubalan PS ta hanyar filastik wanda ke rage taurin da kaddarorin jiki.Mai yana sa samfuran su yi laushi kuma suna aiki azaman kayan aikin sarrafawa.An fi son man paraffin saboda sun fi dacewa da toshe cibiyar EB.Gabaɗaya ana guje wa mai mai kamshi saboda suna kutsawa cikin da kuma sanya filayen polystyrene.
SEBS na iya haɓaka manyan aikace-aikacen sitirene, fina-finai, jakunkuna, fim mai shimfiɗa da marufi da za a iya zubarwa.Suna iya inganta aikin polyolefins don amfani a cikin matsanancin yanayin zafi, inganta tsabta da juriya, da haɓaka elasticity.
Babban Abubuwan Kayayyakin Kowane Matsayi na Kayayyakin Jerin SEBS (Mai Girma)
| Daraja | Tsarin | Block Ratio | 300% Ƙarfin Ƙarfin MPa | Ƙarfin Ƙarfin MPa | Elonga tion % | Saitin Dindindin % | Hardness Shore A | Maganin Toluene Danko a 25 ℃ da kuma 25%, mpa.s |
| YH-501/501T | Litattafai | 30/70 | 5 | 20.0 | 490 | 24 | 76 | 600 |
| YH-502/502T | Litattafai | 30/70 | 4 | 27.0 | 540 | 16 | 73 | 180 |
| YH-503/503T | Litattafai | 33/67 | 6 | 25.0 | 480 | 16 | 74 | 2,300 |
| YH-504/504T | Litattafai | 31/69 | 5 | 26.0 | 480 | 12 | 74 | |
| YH-561/561T | Gauraye | 33/67 | 6.5 | 26.5 | 490 | 20 | 80 | 1,200 |
| YH-602/602T | Siffar tauraro | 35/65 | 6.5 | 27.0 | 500 | 36 | 81 | 250 |
| YH-688 | Siffar tauraro | 13/87 | 1.4 | 10.0 | 800 | 4 | 45 | |
| YH-604/604T | Siffar tauraro | 33/67 | 5.8 | 30.0 | 530 | 20 | 78 | 2,200 |
Lura: Sakamakon maganin toluene na YH-501 / 501T shine 20%, kuma na wasu shine 10%.
"T" yana nufin ruwa mai tsafta.