SEBS(Styrene Ethylene Butylene Styrene)
STYRENE-ETHYLENE-BUTYLENE-STYRENE THERMOPLASTIC ELASTOMER (SEBS)
PROPERTIES AND APPLICATIONS
Styrene-ethylene-butylene-styrene, inozivikanwawo seSEBS, yakakosha thermoplastic elastomer (TPE) inoita serabha isina kuita vulcanization.SEBS yakasimba uye inochinjika, ine kupisa kwakanyanya uye UV kuramba uye iri nyore kugadzirisa.Inobudiswa nechidimbu uye inosarudza hydrogenating ye styrene-butadiene-styrene copolymer (SBS) iyo inovandudza kugadzikana kwekupisa, mamiriro ekunze uye kupikisa mafuta, uye inoita SEBS steam sterillisable.Zvisinei, hydrogenation inoderedzawo kushandiswa kwemagetsi uye inowedzera mari yepolymer. .
SEBS elastomers anowanzo kusanganiswa nemamwe mapolymer kuti awedzere kuita kwavo.Iwo anoshandiswa seanokanganisa magadzirirwo einjiniya thermoplastics uye sema flexibilizer / tougheners ye polypropylene yakajeka (PP).Kazhinji oiri uye mafirita anowedzerwa kumutengo wakaderera uye / kana kuenderera mberi nekugadzirisa zvivakwa.Zvishandiso zvakakosha zvinosanganisira zvinonamira zvinonyunguduka zvinonyungudika, zvigadzirwa zvematoyi, sosi dzeshangu, uye TPE-yakagadziridzwa bhitumeni zvigadzirwa zvekugadzira mugwagwa uye denga rekushandisa.
Styrenics, kana styrenic block copolymers ndiyo inonyanya kushandiswa pane ese TPE's.Izvo zvinosanganiswa zvakanaka nezvimwe zvinhu pamwe nemafirita uye modifiers.SEBS (styrene-ethylene/butylene-styrene) inoratidzirwa neakaoma uye akapfava madomasi mukati memumwe munhu polymer tambo.Iwo ekupedzisira-mabhuraki ari crystalline styrene nepo epakati-blocs ari akapfava ethylene-butylene zvidhinha.Pakupisa kwepamusoro zvinhu izvi zvinopfava uye kuva mvura.Kana yatonhodzwa, tambo dzinobatana pa-styrene end-blocks dzichigadzira yemuviri muchinjiko-link uye ichipa rabha senge elasticity.Kujeka uye kubvumidzwa kweFDA kunoita kuti SEBS ive yakanakisa sarudzo yemhando yepamusoro-yekupedzisira maapplication.
SEBS inogona kuvandudza mashandiro mukudzvinyirirwa-sensitive uye mamwe anonamatira maapplication.Zvimwe zvezvishandiso zvakajairika zvinosanganisira akasiyana matepi, mavara, plasters, zvinonamira zvekuvakisa, zvekupfeka zvekurapa, sealants, marangi uye pendi dzemumigwagwa.
SEBS inogona kusanganiswa kuti igadzire zvinhu zvinovandudza kubata, kunzwa, kutaridzika uye kuve nyore kweakasiyana maapplication.Mitambo nekutandara, matoyi, hutsanana, kurongedza, mota, uye zvakaumbwa uye zvakasimudzwa zvinhu zvehunyanzvi mimwe mienzaniso yakajairika.
SEBS inogona kushandiswa pamwe chete neakasiyana mafirita.MaCompounders anozowedzera aya mafirita kana yakakwidziridzwa kunyudzwa kwemafuta, kudzikiswa kwemutengo, kugadziridzwa kwepamusoro kunzwa, kana kumwe kudzikamiswa kunodiwa pamusoro peSEBS yakachena.
Pamwe iyo yakajairika filler yeSEBS mafuta.Aya mafuta achasarudzwa zvichienderana nezvinodiwa zvekushandisa.Kuwedzera mafuta anonhuhwirira kunopfavisa zvivharo zvePS neplasticizing izvo zvinodzikisira kuomarara uye zvimiro zvemuviri.Mafuta anoita kuti zvigadzirwa zvipfave uye zvakare kuita sezviyamuro zvekugadzirisa.Mafuta eParafini anofarirwa nekuti anonyanyoenderana neEB centre block.Mafuta anonhuhwirira anowanzo kudzivirirwa nekuti anopinda mukati uye anoisa purasitiki iyo polystyrene domain.
SEBS inogona kusimudzira yakakwira styrene application, mafirimu, mabhegi, kutambanudza firimu uye kuraswa kurongedza.Vanogona kuvandudza mashandiro e polyolefins kuti ishandiswe mukupisa kwakanyanya, kunatsiridza kujeka uye kukwenya kuramba, uye kuwedzera elasticity.
Hunhu Huru hweGiredhi rega rega reSEBS Series Zvigadzirwa (Yakajairika Kukosha)
| Giredhi | Chimiro | Block Ratio | 300% Kutambanudza Simba MPa | Ensile Simba MPa | Elongation % | Permanent Set % | Hardness Shore A | Toluene Solution Viscosity pa25 ℃ uye 25%, m.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 | Mixed | 33/67 | 6.5 | 26.5 | 490 | 20 | 80 | 1,200 |
| YH-602/602T | Yakafanana nenyeredzi | 35/65 | 6.5 | 27.0 | 500 | 36 | 81 | 250 |
| YH-688 | Yakafanana nenyeredzi | 13/87 | 1.4 | 10.0 | 800 | 4 | 45 | |
| YH-604/604T | Yakafanana nenyeredzi | 33/67 | 5.8 | 30.0 | 530 | 20 | 78 | 2,200 |
Cherechedza: Iyo toluene solution viscosity yeYH-501/501T i20%, uye yevamwe i10%.
“T” zvinoreva mvura ine munyu.