SEBS(Styrene Ethylene Butylene Styrene)
STYRENE-ETHYLENE-BUTYLENE-STYRENE THERMOPLASTIC ELASTOMER (SEBS)
ZINTHU NDI NTCHITO
Styrene-ethylene-butylene-styrene, yomwe imadziwikanso kuti SEBS, ndi yofunika kwambiri ya thermoplastic elastomer (TPE) yomwe imakhala ngati mphira popanda vulcanization.SEBS ndi yamphamvu komanso yosinthasintha, imakhala ndi kutentha kwakukulu komanso kukana kwa UV ndipo ndiyosavuta kuikonza.Zimapangidwa ndi hydrogenating pang'ono komanso yosankha ya styrene-butadiene-styrene copolymer (SBS) yomwe imathandizira kukhazikika kwamafuta, kutentha kwanyengo ndi kukana kwamafuta, ndikupanga SEBS nthunzi kukhala yosabereka.Komabe, hydrogenation imachepetsanso magwiridwe antchito ndikuwonjezera mtengo wa polima. .
Ma elastomer a SEBS nthawi zambiri amasakanikirana ndi ma polima ena kuti apititse patsogolo ntchito yawo.Amagwiritsidwa ntchito ngati zosintha zama engineering thermoplastics komanso ngati ma flexibilizer / tougheners for clear polypropylene (PP).Nthawi zambiri mafuta ndi zodzaza zimawonjezedwa pamtengo wotsika komanso / kapena kupititsa patsogolo zinthuzo.Ntchito zofunika zimaphatikizapo zomatira zomwe zimakhudzidwa ndi kutentha kwa kutentha, zoseweretsa, sole za nsapato, ndi phula losinthidwa ndi TPE pokonza misewu ndi denga.
Ma styrenics, kapena styrenic block copolymers ndi omwe amagwiritsidwa ntchito kwambiri pa ma TPE onse.Amaphatikizana bwino ndi zida zina komanso zodzaza ndi zosintha.SEBS (styrene-ethylene/butylene-styrene) imadziwika ndi madera olimba komanso ofewa mkati mwa chingwe cha polima.Mapeto-midadada ndi crystalline styrene pamene pakati-blocs ndi zofewa ethylene-butylene midadada.Pakutentha kwambiri, zinthuzi zimafewetsa ndikukhala zamadzimadzi.Ikazizira, zingwezo zimalumikizana kumapeto kwa styrene-blocks kupanga ulalo wolumikizana ndikupereka mphira ngati elasticity.Kumveka bwino komanso kuvomerezedwa ndi FDA kumapangitsa SEBS kukhala njira yabwino kwambiri yopangira mapulogalamu apamwamba.
SEBS imatha kupititsa patsogolo magwiridwe antchito pazovuta komanso zomatira zina.Zina mwazogwiritsidwa ntchito nthawi zambiri ndi monga matepi osiyanasiyana, zolemba, pulasitala, zomatira zomangira, zovala zachipatala, zosindikizira, zokutira ndi utoto wapamisewu.
SEBS imatha kuphatikizidwa kuti ipange zida zomwe zimathandizira kugwira, kumva, mawonekedwe komanso kusavuta kwazinthu zosiyanasiyana.Masewera ndi zosangalatsa, zoseweretsa, ukhondo, kulongedza katundu, magalimoto, ndi zopangidwa ndi extruded katundu luso ndi zitsanzo wamba.
SEBS itha kugwiritsidwa ntchito kuphatikiza ndi zodzaza zosiyanasiyana.Ma Compounders amawonjezera izi ngati kuyamwa kwamafuta, kuchepetsa mtengo, kumveka bwino kwa pamwamba, kapena kukhazikika kwina kumafunika pa SEBS yoyera.
Mwina chodzaza kwambiri cha SEBS ndi mafuta.Mafutawa adzasankhidwa malinga ndi zofunikira za ntchito.Kuonjezera mafuta onunkhira kumafewetsa midadada ya PS popanga pulasitiki yomwe imachepetsa kuuma ndi mawonekedwe akuthupi.Mafuta amapangitsa kuti zinthuzo zikhale zofewa komanso zimathandizira kukonza.Mafuta a paraffinic amakondedwa chifukwa amagwirizana kwambiri ndi chipika chapakati cha EB.Mafuta onunkhira nthawi zambiri amapewedwa chifukwa amalowerera ndikuyika pulasitiki m'magawo a polystyrene.
SEBS imatha kupititsa patsogolo mapulogalamu apamwamba a styrene, mafilimu, matumba, filimu yotambasula ndi ma CD otayika.Amatha kusintha magwiridwe antchito a ma polyolefin kuti agwiritsidwe ntchito potentha kwambiri, amathandizira kumveketsa bwino komanso kukana kukanda, ndikuwonjezera kukhazikika.
Katundu Waukulu wa Giredi Iliyonse ya SEBS Series Products (Wamtengo Wapatali)
| Gulu | Kapangidwe | Block Ration | 300% Kutambasula Mphamvu MPa | Ensile Strength MPa | Elongation% | Chikhazikitso Chokhazikika% | Hardness Shore A | Toluene Solution Viscosity pa 25 ℃ ndi 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 | Zosakanizidwa | 33/67 | 6.5 | 26.5 | 490 | 20 | 80 | 1,200 |
| YH-602/602T | Wooneka ngati nyenyezi | 35/65 | 6.5 | 27.0 | 500 | 36 | 81 | 250 |
| YH-688 | Wooneka ngati nyenyezi | 13/87 | 1.4 | 10.0 | 800 | 4 | 45 | |
| YH-604/604T | Wooneka ngati nyenyezi | 33/67 | 5.8 | 30.0 | 530 | 20 | 78 | 2,200 |
Zindikirani: The toluene solution viscosity ya YH-501/501T ndi 20%, ndipo ena ndi 10%.
“T” amatanthauza madzi opanda mchere.