SEBS (Styrene Ethylene Butylene Styrene)
STYRENE-ETHYLENE-BUTYLENE-STYRENE THERMOPLASTIC ELASTOMER (SEBS)
PROPERTIES THIAB APPLICATIONS
Styrene-ethylene-butylene-styrene, tseem hu ua SEBS, yog ib qho tseem ceeb thermoplastic elastomer (TPE) uas coj zoo li cov roj hmab tsis muaj vulcanization.SEBS muaj zog thiab hloov tau, muaj cua sov zoo heev thiab UV tiv taus thiab yooj yim rau txheej txheem.Nws yog tsim los ntawm ib nrab thiab xaiv hydrogenating ntawm styrene-butadiene-styrene copolymer (SBS) uas txhim kho thermal stability, weathering thiab roj kuj, thiab ua rau SEBS chav sterilisable.Txawm li cas los xij, hydrogenation kuj txo cov neeg kho tshuab kev ua tau zoo thiab nce tus nqi ntawm cov polymer. .
SEBS elastomers feem ntau sib xyaw nrog lwm cov polymers los txhim kho lawv cov kev ua tau zoo.Lawv yog siv los ua kev hloov pauv rau engineering thermoplastics thiab ua flexibilizers / tougheners rau ntshiab polypropylene (PP).Feem ntau cov roj thiab cov khoom ntim tau ntxiv rau tus nqi qis thiab / lossis hloov kho cov khoom ntxiv.Cov ntawv thov tseem ceeb suav nrog cov nplaum nplaum nplaum nplaum, cov khoom ua si, cov khau khau, thiab TPE-hloov bitumen cov khoom siv rau txoj kev paving thiab vov tsev.
Styrenics, los yog styrenic block copolymer yog siv dav tshaj plaws ntawm tag nrho cov TPE's.Lawv ua ke zoo nrog lwm cov ntaub ntawv nrog rau cov fillers thiab modifiers.SEBS (styrene-ethylene / butylene-styrene) yog tus cwj pwm los ntawm cov tawv thiab muag muag nyob rau hauv ib tus neeg cov polymer strands.Cov blocks kawg yog crystalline styrene thaum nruab nrab-blocs yog mos ethylene-butylene blocks.Thaum kub siab dua cov ntaub ntawv no soften thiab ua kua.Thaum txias, cov strands koom ntawm styrene kawg-blocks ua ib qho kev sib txuas ntawm lub cev thiab muab cov roj hmab zoo li elasticity.Clarity thiab FDA pom zoo ua rau SEBS qhov kev xaiv zoo tshaj plaws rau cov ntawv thov siab kawg.
SEBS tuaj yeem txhim kho kev ua haujlwm hauv siab-rhiab thiab lwm yam kev siv nplaum.Qee qhov kev siv ntau tshaj plaws suav nrog ntau hom kab xev, daim ntawv lo, plasters, kev tsim cov nplaum nplaum, kev hnav khaub ncaws kho mob, sealants, coatings thiab cov xim pleev xim rau txoj kev.
SEBS tuaj yeem sib xyaw ua ke los tsim cov ntaub ntawv uas txhim kho kev tuav, hnov, zoo li thiab yooj yim ntawm ntau yam kev siv.Kev ua si thiab kev lom zem, cov khoom ua si, kev nyiam huv, ntim khoom, tsheb, thiab cov khoom siv molded thiab extruded yog qee qhov piv txwv.
SEBS tuaj yeem siv ua ke nrog ntau yam khoom siv.Compounders yuav ntxiv cov fillers no yog txhim kho cov roj nqus, txo tus nqi, txhim kho qhov chaw, los yog ntxiv stabilization yog xav tau tshaj SEBS ntshiab.
Tej zaum feem ntau cov muab tub lim rau SEBS yog roj.Cov roj no yuav raug xaiv nyob ntawm qhov kev thov tshwj xeeb.Ntxiv cov roj tsw qab softens PS blocks los ntawm plasticizing uas txo hardness thiab lub cev muaj zog.Cov roj ua kom cov khoom softer thiab kuj ua raws li kev pab cuam.Cov roj Paraffinic nyiam dua vim tias lawv sib haum nrog EB chaw thaiv.Cov roj tsw qab feem ntau raug zam vim tias lawv nkag mus rau hauv thiab ua kom cov khoom siv polystyrene.
SEBS tuaj yeem txhim kho cov ntawv thov styrene siab, cov yeeb yaj kiab, hnab, ncab zaj duab xis thiab ntim khoom pov tseg.Lawv tuaj yeem txhim kho kev ua tau zoo ntawm polyolefins rau kev siv nyob rau hauv huab cua kub, txhim kho clarity thiab khawb tsis kam, thiab txhim kho elasticity.
Cov Khoom Tseem Ceeb ntawm Txhua Qib ntawm SEBS Series Cov Khoom (Hloov Tus Nqi)
| Qib | Qauv | Thaiv piv | 300% Stretching zog MPa | Ensile zog MPa | Cov ntsiab lus% | Kev ruaj ntseg % | Hardness Ntug A | Toluene daws viscosity ntawm 25 ℃ thiab 25%, mpa.s |
| YH-501/501T | Tawm | 30/70 ib | 5 | 20.0 Nws | 490 ib | 24 | 76 | 600 |
| YH-502/502T | Tawm | 30/70 ib | 4 | 27.0 Nws | 540 | 16 | 73 | 180 |
| YH-503/503T | Tawm | 33/67 ib | 6 | 25.0 Nws | 480 | 16 | 74 | 2,300 Nws |
| YH-504/504T | Tawm | 31/69 ib | 5 | 26.0 Nws | 480 | 12 | 74 | |
| YH-561/561T | Mixed | 33/67 ib | 6.5 | 26.5 ib | 490 ib | 20 | 80 | 1,200 |
| YH-602/602T | Lub hnub qub | 35/65 ib | 6.5 | 27.0 Nws | 500 | 36 | 81 | 250 |
| YH-688 | Lub hnub qub | 13/87 ib | 1.4 | 10.0 | 800 | 4 | 45 | |
| YH-604/604T | Lub hnub qub | 33/67 ib | 5.8 | 30.0 Nws | 530 | 20 | 78 | 2,200 ib |
Lus Cim: Cov tshuaj toluene viscosity ntawm YH-501/501T yog 20%, thiab lwm tus yog 10%.
"T" txhais tau hais tias dej desalted.