SBS (styrene-butadiene block copolymer)
DUKIYA DA APPLICATIONS
Styrene-butadiene block copolymers wani muhimmin aji ne na roba roba.Mafi yawan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan su ne madaidaiciya da radial triblock copolymers suna da shingen tsakiya na roba da tubalan ƙarshen polystyrene.SBS elastomers sun haɗu da kaddarorin resins na thermoplastic tare da na roba butadiene.Ƙaƙƙarfan tubalan styrene na gilashi suna ba da ƙarfin inji kuma suna inganta juriya na abrasion, yayin da tsakiyar shinge na roba yana ba da sassauci da tauri.
Dangane da yawa, SBS elastomers tare da ƙananan abun ciki na styrene suna da kaddarorin da suka yi kama da na rubber butadiene mara kyau amma ana iya ƙera su da fitar da su ta amfani da kayan sarrafa thermoplastic na al'ada.Duk da haka, SBS ba ta da ƙarfi fiye da abin da aka haɗe ta hanyar sinadarai (vulcanized) butadiene robar don haka, baya murmurewa da kyau daga nakasawa kamar vulcanized diene elastomers.
Ana haɗa robar SBS sau da yawa tare da wasu polymers don haɓaka aikin su.Sau da yawa ana ƙara mai da filaye zuwa ƙananan farashi kuma don ƙara gyara kayansu.
Aikace-aikace
Ana amfani da SBS a cikin masana'antu daban-daban:mota, gyare-gyaren bitumen, HIPS, tafin takalmi da masterbatch.Ana fifita robar roba sau da yawa akan roba na halitta saboda yana da girma cikin tsarki kuma yana da sauƙin rikewa.Ɗaya daga cikin ainihin samfuran BassTech, styrene-butadiene styrene (SBS), robar roba ce ta gama gari da ake amfani da ita a masana'antu.
1. Styrene-butadiene styrene an rarraba shi azaman elastomer na thermoplastic.
A matsayin elastomer na thermoplastic, ana iya sarrafa SBS cikin sauƙi kuma ana sake sarrafa shi lokacin mai zafi.Bayan dumama, yana aiki kamar filastik kuma yana iya aiki sosai.Tsarinsa (katange copolymer tare da sarƙoƙi na polystyrene guda biyu) yana ba da damar haɗuwa da kayan filastik mai wuya da na roba.
2. Idan aka kwatanta da roba vulcanized na gargajiya, yin amfani da styrene-butadiene styrene na iya taimakawa wajen rage farashin samarwa.
Yana da sake yin amfani da shi, mai jurewa abrasion kuma baya buƙatar vulcanizing.SBS yana da kyau kuma baya sawa cikin sauƙi, yana rage buƙatar gyare-gyare da kuma sanya shi kayan aiki mai tsada na kayan rufi.
3. Styrene-butadiene styrene ya dace sosai don aikace-aikacen rufi.
Ana amfani da SBS sosai a cikin aikace-aikacen rufi kamar gyaran bitumen, kayan hatimin ruwa da suturar ruwa.A cikin yanayin sanyi, SBS ya kasance mai ƙarfi, sassauƙa da juriya ga danshi.Bugu da ƙari, yin rufi, ana amfani da SBS a cikin shimfidawa, masu rufewa da sutura don ƙara sassaucin sanyi da rage yaduwar fashewa.A matsayin mai gyara kwalta, SBS yana hana ramuka da fashe-fashe da yawa ke haifar da girgizar zafi.
4. Styrene-butadiene styrene abu ne mai ban sha'awa ga masu sana'a na takalma.
SBS abu ne mai kyau a cikin masana'anta na takalma don yawancin dalilai guda ɗaya wanda ya sa ya dace don yin rufi.A cikin takalman takalma, styrene-butadiene styrene yana ba da gudummawa ga samfur mai ƙarfi amma mai sauƙi wanda za'a iya hana ruwa.
Babban Abubuwan Jiki na samfuran Baling SBS
| Daraja | Tsarin | S/B | Tashin hankali Karfin Mpa | Tauri Shore A | MFR (g/10min, 200℃, 5kg) | Maganin Toluene Danko a 25 ℃ da 25%, mpa.s |
| YH-792/792E | Litattafai | 38/62 | 29 | 89 | 1.5 | 1,050 |
| YH-791/791E | Litattafai | 30/70 | 15 | 70 | 1.5 | 2,240 |
| YH-791H | Litattafai | 30/70 | 20 | 76 | 0.1 | |
| YH-796/796E | Litattafai | 23/77 | 10 | 70 | 2 | 4,800 |
| YH-188/188E | Litattafai | 34/66 | 26 | 85 | 6 | |
| YH-815/815E | Siffar tauraro | 40/60 | 24 | 89 | 0.1 | |
| Gyaran hanya -2# | Siffar tauraro | 29/71 | 15 | 72 | 0.05 | 1,050* |
| YH-803 | Siffar tauraro | 40/60 | 25 | 92 | 0.05 | |
| YH-788 | Litattafai | 32/68 | 18 | 72 | 4-8 | |
| YH-4306 | Siffar tauraro | 29/71 | 18 | 80 | 4-8 |
Lura: Abun da aka yiwa alama * shine danko na 15% toluene maganin.
"E" yana wakiltar samfurin da ya dace da muhalli.