SBS (styrene-butadiene block copolymer)
ALA NA ngwa
Styrene-butadiene block copolymers bụ klas dị mkpa nke roba sịntetik.Ụdị abụọ a na-ahụkarị bụ linear na radial triblock copolymers nwere ngọngọ etiti roba na njedebe polystyrene.SBS elastomers na-ejikọta njirimara nke resin thermoplastic na nke roba butadiene.Ihe mgbochi styrene siri ike, enyo enyo na-enye ike arụ ọrụ ma melite nguzogide abrasion, ebe etiti mgbochi roba na-enye mgbanwe na ike.
N'ọtụtụ akụkụ, SBS elastomers nwere obere ọdịnaya styrene nwere ihe ndị yiri nke rubber butadiene vulcanized mana enwere ike ịkpụzi ma wepụ ya site na iji ngwa nhazi thermoplastic.Otú ọ dị, SBS adịchaghị agbake karịa rọba butadiene crosslinked (vulcanized) ma ya mere, ọ naghị agbake nke ọma site na nrụrụ dị ka vulcanized diene elastomers.
A na-ejikọta rọba SBS na polymer ndị ọzọ iji kwalite arụmọrụ ha.Ọtụtụ mgbe, a na-agbakwunye mmanụ na ihe na-ejuputa na ọnụ ala dị ala na iji gbanwee ihe onwunwe ha ọzọ.
Ngwa
A na-eji SBS eme ihe n'ọtụtụ ụlọ ọrụ dị iche iche:ụgbọ ala, mgbanwe bitumen, HIPS, ọbụ ụkwụ akpụkpọ ụkwụ na masterbatch.A na-ahọrọ rọba sịntetik karịa rọba eke n'ihi na ọ dị elu na ịdị ọcha ma dị mfe ijikwa ya.Otu n'ime ngwaahịa BassTech bụ isi, styrene-butadiene styrene (SBS), bụ rọba sịntetịt a na-ejikarị eme ihe n'ichepụta ụlọ ọrụ.
1. Styrene-butadiene styrene bụ nkewa dị ka thermoplastic elastomer.
Dị ka elastomer thermoplastic, a na-edozi SBS ngwa ngwa ma megharịa ya mgbe ọ dị ọkụ.N'elu ikpo ọkụ, ọ na-eme dị ka plastik ma na-arụ ọrụ nke ọma.Ọdịdị ya (mgbochi copolymer na abụọ polystyrene chains) na-enye ohere maka ngwakọta nke plastik siri ike na ihe na-agbanwe.
2. E jiri ya tụnyere roba vulcanized ọdịnala, iji styrene-butadiene styrene nwere ike inye aka belata ọnụ ahịa mmepụta.
Ọ nwere ike ịmegharị ya, na-eguzogide abrasion na ọ dịghị achọ vulcanization.SBS na-eto nke ọma na ọ naghị eyi ngwa ngwa, na-ebelata mkpa ọ dị maka nrụzi ma na-eme ka ọ bụrụ akụkụ dị ọnụ ala nke ngwaahịa mkpuchi ụlọ.
3. Styrene-butadiene styrene dị ezigbo mma maka ngwa ụlọ.
A na-eji SBS eme ihe n'ọtụtụ ebe na ngwa ụlọ dị ka mgbanwe bitumen, ihe mkpuchi mmiri na mkpuchi mmiri.Na okpomọkụ oyi, SBS na-anọgide na-esi ike, na-agbanwe ma na-eguzogide mmiri.Na mgbakwunye na mkpuchi ụlọ, a na-eji SBS mee ihe na paving, sealants na mkpuchi iji gbakwunye mgbanwe oyi ma belata mgbasa mgbawa na-emebi emebi.Dị ka ihe ngbanwe nke asphalt, SBS na-egbochi oghere na mgbawa na-emekarị site na ujo okpomọkụ.
4. Styrene-butadiene styrene bụ ihe na-ewu ewu maka ndị na-emepụta akpụkpọ ụkwụ.
SBS bụ ihe magburu onwe ya na mmepụta akpụkpọ ụkwụ maka ọtụtụ n'ime otu ihe ndị ahụ na-eme ka ọ dị mma maka ụlọ.Na akpụkpọ ụkwụ akpụkpọ ụkwụ, styrene-butadiene styrene na-enye aka na ngwaahịa siri ike ma na-agbanwe agbanwe nke nwere ike igbochi mmiri.
Njirimara anụ ahụ bụ isi nke ngwaahịa SBS Baling
| Ọkwa | Nhazi | S/B | Ịkwụsị Ike Mpa | Isi ike Shore A | MFR (g/10 nkeji, 200 ℃, 5kg) | Ngwọta Toluene Viscosity na 25 ℃ na 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 | Ụdị kpakpando | 40/60 | 24 | 89 | 0.1 | |
| Mgbanwe okporo ụzọ -2# | Ụdị kpakpando | 29/71 | 15 | 72 | 0.05 | 1,050* |
| YH-803 | Ụdị kpakpando | 40/60 | 25 | 92 | 0.05 | |
| YH-788 | Linear | 32/68 | 18 | 72 | 4-8 | |
| YH-4306 | Ụdị kpakpando | 29/71 | 18 | 80 | 4-8 |
Mara: Ihe akara * bụ viscosity nke 15% toluene ngwọta.
“E” na-anọchi anya ngwaahịa na gburugburu ebe obibi.