SBS(styrene-butadiene block copolymer)
ZINTHU NDI NTCHITO
Ma styrene-butadiene block copolymers ndi gulu lofunikira la mphira opangira.Mitundu iwiri yodziwika kwambiri ndi ma linear ndi ma radial triblock copolymers okhala ndi midadada pakati pa mphira ndi midadada yomaliza ya polystyrene.Ma elastomer a SBS amaphatikiza zinthu za utomoni wa thermoplastic ndi wa rabara wa butadiene.Mipiringidzo yolimba, yagalasi ya styrene imapereka mphamvu zamakina ndikuwongolera kukana kwa abrasion, pomwe mphira wapakati pa block umapereka kusinthasintha komanso kulimba.
Nthawi zambiri, ma elastomer a SBS okhala ndi ma styrene otsika amakhala ndi zinthu zofanana ndi mphira wa butadiene wavulcanized koma amatha kupangidwa ndikutulutsidwa pogwiritsa ntchito zida zanthawi zonse za thermoplastic.Komabe, SBS imakhala yolimba kwambiri kuposa mphira wophatikizika (vulcanized) butadiene ndipo motero, sichichira bwino kuchokera ku mapindikidwe monga ma diene elastomers owonongeka.
Ma rubber a SBS nthawi zambiri amasakanikirana ndi ma polima ena kuti apititse patsogolo ntchito yawo.Nthawi zambiri mafuta ndi ma fillers amawonjezedwa kuti achepetse mtengo komanso kuti asinthe zinthu zawo.
Kugwiritsa ntchito
SBS imagwiritsidwa ntchito m'mafakitale ambiri osiyanasiyana:magalimoto, kusintha phula, HIPS, nsapato ndi masterbatch.Labala wopangidwa nthawi zambiri amakonda kuposa mphira wachilengedwe chifukwa ndi waukhondo komanso wosavuta kugwira.Chimodzi mwazinthu zazikulu za BassTech, styrene-butadiene styrene (SBS), ndi mphira wamba wamba wogwiritsidwa ntchito popanga mafakitale.
1. Styrene-butadiene styrene amaikidwa ngati thermoplastic elastomer.
Monga thermoplastic elastomer, SBS imakonzedwa mosavuta ndikusinthidwanso ikatenthedwa.Ikatenthedwa, imakhala ngati pulasitiki ndipo imagwira ntchito kwambiri.Mapangidwe ake (block copolymer yokhala ndi maunyolo awiri a polystyrene) amalola kuphatikiza pulasitiki yolimba komanso zotanuka.
2. Poyerekeza ndi mphira wamba, kugwiritsa ntchito styrene-butadiene styrene kungathandize kuchepetsa ndalama zopangira.
Ndiwobwezerezedwanso, osamva ma abrasion ndipo safuna vulcanizing.SBS imakalamba bwino ndipo sichimavala mosavuta, kuchepetsa kufunika kokonzanso ndikupangitsa kuti ikhale yotsika mtengo pazinthu zofolera.
3. Styrene-butadiene styrene ndi yoyenera kwambiri pakuyika padenga.
SBS imagwiritsidwa ntchito kwambiri popangira denga monga kusinthidwa kwa phula, zida zosindikizira zamadzimadzi komanso zokutira zosalowa madzi.M'nyengo yozizira, SBS imakhalabe yamphamvu, yosinthasintha komanso yosagwirizana ndi chinyezi.Kuphatikiza pa denga, SBS imagwiritsidwa ntchito pokonza, zosindikizira ndi zokutira kuti ziwonjezere kusinthasintha kwa kuzizira komanso kuchepetsa kufalikira kwa ming'alu yowononga.Monga chosinthira phula, SBS imalepheretsa maenje ndi ming'alu yomwe imachitika chifukwa cha kutenthedwa kwa kutentha.
4. Styrene-butadiene styrene ndi zinthu zotchuka kwa opanga nsapato.
SBS ndi chinthu chabwino kwambiri popanga nsapato pazifukwa zambiri zomwe zimapangitsa kuti ikhale yabwino pakufolera.Mu nsapato za nsapato, styrene-butadiene styrene imathandizira ku chinthu cholimba koma chosinthika chomwe chimatha kutetezedwa ndi madzi.
Zazikulu Zakuthupi Zazinthu za Baling SBS
| Gulu | Kapangidwe | S/B | Tensile Mphamvu Mpa | Kuuma Shore A | MFR (g/10min, 200 ℃, 5kg) | Toluene Solution Viscosity pa 25 ℃ ndi 25%, mpa.s |
| YH-792/792E | Linear | 38/62 | 29 | 89 | 1.5 | 1,050 |
| YH-791/791E | Linear | 30/70 | 15 | 70 | 1.5 | 2,240 |
| YH-791H | Linear | 30/70 | 20 | 76 | 0.1 | |
| YH-796/796E | Linear | 23/77 | 10 | 70 | 2 | 4,800 |
| YH-188/188E | Linear | 34/66 | 26 | 85 | 6 | |
| YH-815/815E | Wooneka ngati nyenyezi | 40/60 | 24 | 89 | 0.1 | |
| Kusintha kwa msewu -2# | Wooneka ngati nyenyezi | 29/71 | 15 | 72 | 0.05 | 1,050* |
| YH-803 | Wooneka ngati nyenyezi | 40/60 | 25 | 92 | 0.05 | |
| YH-788 | Linear | 32/68 | 18 | 72 | 4-8 | |
| YH-4306 | Wooneka ngati nyenyezi | 29/71 | 18 | 80 | 4-8 |
Chidziwitso: Zomwe zalembedwa * ndi kukhuthala kwa 15% toluene solution.
"E" imayimira chinthu chokomera chilengedwe.