SEBS(Styrene Ethylene Butylene Styrene)
STYRENE-ETHYLENE-BUTYLENE-STYRENE THERMOPLASTIC ELASTOMER (SEBS)
LETLOTLO LE LIKOPO
Styrene-ethylene-butylene-styrene, eo hape e tsejoang e le SEBS, ke thermoplastic elastomer ea bohlokoa (TPE) e itšoarang joaloka rabara ntle le ho ba le vulcanization.SEBS e matla ebile e tenyetseha, e na le mocheso o babatsehang le ho hanyetsa UV 'me ho bonolo ho sebetsa.E hlahisoa ka karolo e itseng le e khethollang ea hydrogenating ea styrene-butadiene-styrene copolymer (SBS) e ntlafatsang botsitso ba mocheso, boemo ba leholimo le ho hanyetsa oli, 'me e etsa hore mouoane oa SEBS o be matla. .
Li-elastomer tsa SEBS hangata li kopantsoe le li-polymer tse ling ho ntlafatsa ts'ebetso ea tsona.Li sebelisoa e le li-modifiers bakeng sa thermoplastics ea boenjiniere le li-flexibilizer / tougheners bakeng sa polypropylene e hlakileng (PP).Hangata oli le li-filler li eketsoa ka theko e tlase le / kapa ho ntlafatsa thepa.Lisebelisoa tsa bohlokoa li kenyelletsa likhomaretsi tse nang le khatello e matla ea ho qhibiliha, lihlahisoa tsa libapalisoa, sole ea lieta, le lihlahisoa tse fetotsoeng tsa sekontiri sa TPE bakeng sa ho betla litsela le ho rulela.
Li-styrenics, kapa li-styrenic block copolymers ke tsona tse sebelisoang haholo ho feta tsohle tsa TPE.Li kopanya hantle le lisebelisoa tse ling hammoho le li-filler le li-modifiers.SEBS (styrene-ethylene/butylene-styrene) e khetholloa ka libaka tse thata le tse bonolo ka har'a likhoele tsa polymer ka bomong.Li-block-blocks ke crystalline styrene ha li-blocs tse bohareng e le li-blocks tse bonolo tsa ethylene-butylene.Ha lithempereichara tse holimo, lisebelisoa tsena lia nolofala ebe li fetoha mokelikeli.Ha li pholile, likhoele li kopana lintlheng tsa styrene qetellong li etsa sehokelo sa 'mele le ho fana ka rabara e kang elasticity.Ho hlaka le tumello ea FDA li etsa hore SEBS e be khetho e ntle bakeng sa lits'ebetso tse phahameng haholo.
SEBS e ka ntlafatsa ts'ebetso lits'ebetsong tse se nang khatello le tse ling tse khomarelang.Tse ling tsa lits'ebetso tse atileng haholo li kenyelletsa mefuta e fapaneng ea litheipi, lileibole, lipolasetere, likhomaretsi tsa kaho, liaparo tsa bongaka, li-sealant, lirafshoa le lipente tse tšoaeang litsela.
SEBS e ka kopanngoa ho hlahisa lisebelisoa tse ntlafatsang ho ts'oaroa, maikutlo, ponahalo le boiketlo ba lits'ebetso tse fapaneng.Lipapali le boikhathollo, lintho tsa ho bapala, bohloeki, ho paka, likoloi, le thepa ea tekheniki e bōpiloeng le e fetisitsoeng ke mehlala e meng e tloaelehileng.
SEBS e ka sebelisoa hammoho le li-filler tse fapaneng.Li-compounders li tla eketsa li-filler tsena haeba ho monya oli e ntlafalitsoeng, phokotso ea litšenyehelo, maikutlo a ntlafalitsoeng a holim'a metsi, kapa ho hlokahala botsitso bo eketsehileng holim'a SEBS e hloekileng.
Mohlomong setlolo se tsebahalang haholo sa SEBS ke oli.Lioli tsena li tla khethoa ho latela litlhoko tse khethehileng tsa kopo.Ho eketsa oli e nkhang hamonate ho nolofatsa li-block tsa PS ka ho etsa polasetiki e fokotsang boima le thepa ea 'mele.Oli e etsa hore lihlahisoa li be bonolo hape li sebetsa e le lithuso tsa ho sebetsa.Lioli tsa parafini li khethoa hobane li lumellana haholoanyane le setsi sa setsi sa EB.Hangata oli e nkhang hamonate e qojoa hobane e kenella le ho etsa polasetiki ea libaka tsa polystyrene.
SEBS e ka ntlafatsa lits'ebetso tse phahameng tsa styrene, lifilimi, mekotla, filimi e otlolohileng le liphutheloana tse lahlehang.Li ka ntlafatsa ts'ebetso ea polyolefin bakeng sa ho sebelisoa maemong a mocheso o feteletseng, ho ntlafatsa ho hlaka le ho hanyetsa mongoao, le ho matlafatsa elasticity.
Thepa e ka Sehloohong ea Sehlopha se seng le se seng sa Lihlahisoa tsa SEBS Series (Boleng bo Tloaelehileng)
| Kereiti | Sebopeho | Thibela Karolelano | 300% Matla a ho Otlolla MPa | Ensile Matla MPa | Elongation % | Set se sa feleng % | Hardness Shore A | Tharollo ea Toluene Viscosity ho 25 ℃ le 25%, mpa.s |
| YH-501/501T | Linear | 30/70 | 5 | 20.0 | 490 | 24 | 76 | 600 |
| YH-502/502T | Linear | 30/70 | 4 | 27.0 | 540 | 16 | 73 | 180 |
| YH-503/503T | Linear | 33/67 | 6 | 25.0 | 480 | 16 | 74 | 2,300 |
| YH-504/504T | Linear | 31/69 | 5 | 26.0 | 480 | 12 | 74 | |
| YH-561/561T | Kopantsoeng | 33/67 | 6.5 | 26.5 | 490 | 20 | 80 | 1,200 |
| YH-602/602T | E bōpehileng joaloka naleli | 35/65 | 6.5 | 27.0 | 500 | 36 | 81 | 250 |
| YH-688 | E bōpehileng joaloka naleli | 13/87 | 1.4 | 10.0 | 800 | 4 | 45 | |
| YH-604/604T | E bōpehileng joaloka naleli | 33/67 | 5.8 | 30.0 | 530 | 20 | 78 | 2,200 |
Tlhokomeliso: Viscosity ea tharollo ea toluene ea YH-501/501T ke 20%, 'me ea ba bang ke 10%.
“T” e bolela metsi a nang le letswai.