SBS(styrene-butadiene block copolymer)
PROPERTIES AND APPLICATIONS
Styrene-butadiene block copolymers ikirasi yakakosha yemarubha ekugadzira.Idzi mhando mbiri dzinonyanyozivikanwa ndeye linear uye radial triblock copolymers ine rubber centre blocks uye polystyrene end blocks.SBS elastomers inosanganisa zvimiro zve thermoplastic resins neiyo butadiene rubber.Iyo yakaoma, ine girazi styrene zvidhinha inopa simba remagetsi uye inovandudza abrasion kuramba, nepo rabha yepakati-block inopa kuchinjika uye kuoma.
Mune zvakawanda, SBS elastomers ine yakaderera styrene content ine zvivakwa zvakafanana neiyo vulcanized butadiene rabha asi inogona kuumbwa uye extruded uchishandisa yakajairwa thermoplastic processing equipment.Nekudaro, SBS haina kusimba kupfuura kemikari yakasanganiswa (vulcanized) butadiene rabha uye nekudaro, haidzoke zvakanaka kubva mukushanduka seyakasvibiswa diene elastomers.
SBS marabha anowanzo kusanganiswa nemamwe mapolymer kuti awedzere kuita kwavo.Kazhinji oiri uye mafirita anowedzerwa kumutengo wakaderera uye kuwedzera kushandura zvivakwa zvavo.
Application
SBS inoshandiswa mumaindasitiri mazhinji akasiyana:mota, bhitumini kugadziridzwa, HIPS, bhutsu soles uye masterbatch.Synthetic rubber inowanzofarirwa pane yerabha yechisikigo nekuti yakakwirira mukuchena uye iri nyore kubata.Imwe yeBassTech's yakakosha zvigadzirwa, styrene-butadiene styrene (SBS), yakajairika yakagadzirwa rabha inoshandiswa mukugadzira maindasitiri.
1. Styrene-butadiene styrene inorondedzerwa se thermoplastic elastomer.
Se thermoplastic elastomer, SBS inogadziriswa zviri nyore uye inodzokororwa kana yapiswa.Pakupisa, inoita sepurasitiki uye inoshanda zvakanyanya.Chimiro chayo (block copolymer nemaketani maviri epolystyrene) inobvumira kusanganiswa kwepurasitiki yakaoma uye elastic properties.
2. Kuenzaniswa nerabha yakasvibiswa, kushandisa styrene-butadiene styrene inogona kubatsira kuderedza mari yekugadzira.
Iyo inogona kushandiswazve, inodzivirira-abrasion uye haidi vulcanizing.SBS inochembera zvakanaka uye haipfeki zviri nyore, ichideredza kudiwa kwekugadzirisa uye kuita kuti ive chikamu chinodhura chezvigadzirwa zvedenga.
3. Styrene-butadiene styrene inonyatsokodzera padenga rekushandisa.
SBS inoshandiswa zvakanyanya mukugadzira denga rekushandisa senge bitumen gadziriso, liquid seal zvinhu uye machira asina mvura.Mukutonhora kunotonhora, SBS inoramba yakasimba, inoshanduka uye inodzivirira kunyoro.Pamusoro pedenga remba, SBS inoshandiswa mukugadzira, zvisimbiso uye machira kuti iwedzere kutonhora kuchinjika uye kuderedza inoparadza kuputika kupararira.Sechigadziriso cheasphalt, SBS inodzivirira makomba uye makatsemuka anowanzo kukonzerwa nekuvhunduka kwemafuta.
4. Styrene-butadiene styrene chinhu chakakurumbira kune vanogadzira shangu.
SBS chinhu chakanakisa mukugadzira shangu kune zvakawanda zvezvikonzero zvakafanana zvinoita kuti ive yakanakira kumatenga.Mumakumbo eshangu, styrene-butadiene styrene inobatsira kune yakasimba asi inoshanduka chigadzirwa chinogona kudzivirirwa mvura.
Main Physical Properties yeBaling SBS Zvigadzirwa
| Giredhi | Chimiro | S/B | Tensile Simba Mpa | Kuoma Shore A | MFR (g/10min, 200℃, 5kg) | Toluene Solution Viscosity pa25 ℃ uye 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 | Yakafanana nenyeredzi | 40/60 | 24 | 89 | 0.1 | |
| Kugadziriswa kwemugwagwa -2# | Yakafanana nenyeredzi | 29/71 | 15 | 72 | 0.05 | 1,050* |
| YH-803 | Yakafanana nenyeredzi | 40/60 | 25 | 92 | 0.05 | |
| YH-788 | Linear | 32/68 | 18 | 72 | 4-8 | |
| YH-4306 | Yakafanana nenyeredzi | 29/71 | 18 | 80 | 4-8 |
Ongorora: Chinhu chakanyorwa * ndeye viscosity ye15% toluene mhinduro.
"E" inomiririra chigadzirwa chinoenderana nenharaunda.