SBS(styrene-butadiene block copolymer)
IIPROPATI KUNYE NESICELO
I-Styrene-butadiene block copolymers yiklasi ebalulekileyo yeerubha zokwenziwa.Ezona ntlobo zixhaphakileyo zimbini zi-linear kunye ne-radial triblock copolymers ezineebhloko eziseziko zerabha kunye neebhloko zokuphela kwe-polystyrene.I-elastomers ze-SBS zidibanisa iipropathi ze-thermoplastic resins kunye nezo zerabha ye-butadiene.Iibhloko ze-styrene ezinzima, zeglasi zinika amandla omatshini kunye nokuphucula ukuxhathisa kwe-abrasion, ngelixa i-rubber mid-block inikeza ukuguquguquka kunye nokuqina.
Kwimiba emininzi, ii-elastomers ze-SBS ezinomxholo ophantsi we-styrene zineempawu ezifanayo nezo zerubha ye-butadiene evuthelweyo kodwa zinokubunjwa kwaye zikhutshwe kusetyenziswa izixhobo eziqhelekileyo zokulungisa i-thermoplastic.Nangona kunjalo, i-SBS ayinako ukuqina ngakumbi kunerabha ye-butadiene exutywe ngamachiza (vulcanized) kwaye ke, ayibuyiseli ngokufanelekileyo kwi-deformation njenge-vulcanized diene elastomers.
Iirubha ze-SBS zihlala zidityaniswa nezinye iipholima ukuze ziphucule ukusebenza kwazo.Amaxesha amaninzi ioyile kunye nezihluzi zongezwa kwiindleko eziphantsi kunye nokuphucula ngakumbi iipropathi zazo.
Isicelo
I-SBS isetyenziswa kumashishini amaninzi ahlukeneyo:iimoto, ukuguqulwa kwebhitumene, iHIPS, iisoli zezihlangu kunye ne-masterbatch.Irabha yokwenziwa isoloko ithandwa kunerabha yendalo kuba iphezulu ngobunyulu kwaye kulula ukuyiphatha.Enye yeemveliso eziphambili ze-BassTech, i-styrene-butadiene styrene (SBS), yirabha yokwenziwa eqhelekileyo esetyenziswa kwimveliso yemizi-mveliso.
1. I-styrene-butadiene styrene ihlelwa njenge-elastomer ye-thermoplastic.
Njenge-elastomer ye-thermoplastic, i-SBS icutshungulwa ngokulula kwaye iphinde iphindwe xa ishushu.Ekufudumeni, isebenza njengeplastiki kwaye iyasebenza kakhulu.Isakhiwo sayo (ibhloko ye-copolymer eneentambo ezimbini ze-polystyrene) ivumela ukudibanisa kweplastiki enzima kunye neempawu ze-elastic.
2. Xa kuthelekiswa nerabha ye-vulcanized yendabuko, ukusebenzisa i-styrene-butadiene styrene inokunceda ukunciphisa iindleko zokuvelisa.
Iyakwazi ukurisayikilishwa, imelana ne-abrasion kwaye ayifuni vulcanizing.I-SBS iguga kakuhle kwaye ayinxibi lula, inciphisa imfuno yokulungiswa kunye nokwenza ukuba ibe yinto ebiza imali eninzi yeemveliso zokuphahla.
3. I-styrene-butadiene styrene ifanelekile kakhulu kwizicelo zokuphahla.
I-SBS isetyenziswa ngokubanzi kwizicelo zokufulela ezifana nokuguqulwa kwebhitumene, izinto zokutywina ezimanzi kunye neengubo zokungena kwamanzi.Kwiqondo lokushisa elibandayo, i-SBS ihlala yomelele, iguquguquka kwaye iyamelana nokufuma.Ukongeza kwi-roofing, i-SBS isetyenziselwa i-paving, i-sealants kunye ne-coatings ukongeza ukuguquguquka okubandayo kunye nokunciphisa ukusabalalisa kokuqhekeka okutshabalalisayo.Njengesilungisi se-asphalt, i-SBS ikhusela imingxuma kunye neentanda ezibangelwa kukothuka kwe-thermal.
4. I-styrene-butadiene styrene yinto eyaziwayo kubenzi bezicathulo.
I-SBS yimathiriyeli egqwesileyo ekwenzeni izihlangu ngenxa yezizathu ezininzi ezifanayo ezenza ukuba zilungele ukufulela.Kwizihlangu zezihlangu, i-styrene-butadiene styrene inegalelo kwimveliso eyomeleleyo kodwa eguquguqukayo enokuthi ingabi namanzi.
IiPropati eziPhambili zoMzimba kwiiMveliso ze-Baling ze-SBS
| IBanga | Ulwakhiwo | S/B | Ukuqina Amandla Mpa | Ukuqina Unxweme A | MFR (g/10min, 200℃, 5kg) | Isisombululo seToluene I-Viscosity kwi-25 ℃ kunye ne-25%, mpa.s |
| YH-792/792E | Umgca | 38/62 | 29 | 89 | 1.5 | 1,050 |
| YH-791/791E | Umgca | 30/70 | 15 | 70 | 1.5 | 2,240 |
| YH-791H | Umgca | 30/70 | 20 | 76 | 0.1 | |
| YH-796/796E | Umgca | 23/77 | 10 | 70 | 2 | 4,800 |
| YH-188/188E | Umgca | 34/66 | 26 | 85 | 6 | |
| YH-815/815E | Imile okwenkwenkwezi | 40/60 | 24 | 89 | 0.1 | |
| Ukulungiswa kwendlela -2# | Imile okwenkwenkwezi | 29/71 | 15 | 72 | 0.05 | 1,050* |
| YH-803 | Imile okwenkwenkwezi | 40/60 | 25 | 92 | 0.05 | |
| YH-788 | Umgca | 32/68 | 18 | 72 | 4-8 | |
| YH-4306 | Imile okwenkwenkwezi | 29/71 | 18 | 80 | 4-8 |
Qaphela: Into ephawulweyo * yi-viscosity ye-15% yesisombululo se-toluene.
“E” imele imveliso ehambelana nokusingqongileyo.