SBS (styrene-butadiene block copolymer)
HANTIDA IYO CODSIGA
Styrene-butadiene block copolymers waa nooc muhiim ah oo caag ka samaysan.Labada nooc ee ugu caansan waa isku-xireyaasha toosan iyo radial triblock copolymers oo leh blocks xarun caag ah iyo xirmooyinka dhamaadka polystyrene.Elastomers SBS waxay isku daraan sifooyinka xargaha xaraashka ah iyo kuwa caagga butadiene.Qaybaha adag ee styrene-ka dhalooyinka leh waxay bixiyaan awood farsamo waxayna wanaajiyaan caabbinta nabarrada, halka xannibaadda dhexe ee caaggu ay bixiso dabacsanaan iyo adayg.
Dhinacyo badan, SBS elastomers oo leh maadada styrene hoose waxay leeyihiin sifooyin la mid ah kuwa caagga butadiene vulcanized laakiin waa la qaabayn karaa oo la soo saari karaa iyadoo la adeegsanayo qalabka heerkulbeegga caadiga ah.Si kastaba ha ahaatee, SBS way ka adkeysi yartahay marka loo eego caagga butadiene ee kiimikaad ahaan isku xidha (vulcanized) sidaas awgeed, si fiican ugama soo kabato qallafsanaanta sida elastomers diene vulcanized.
Caagadaha SBS ayaa inta badan lagu daraa polymers kale si kor loogu qaado waxqabadkooda.Badanaa saliida iyo waxyaalaha lagu buuxiyo ayaa lagu daraa qiimo jaban iyo in wax laga beddelo hantidooda.
Codsiga
SBS waxaa loo isticmaalaa warshado badan oo kala duwan:baabuurta, wax ka beddelka bitumen, HIPS, kabaha kabaha iyo masterbatch.Caag synthetic ah ayaa inta badan laga door bidaa caagga dabiiciga ah sababtoo ah waa ka sarreeya nadiifsanaan iyo si sahlan loo maamulo.Mid ka mid ah alaabada asaasiga ah ee BassTech, styrene-butadiene styrene (SBS), waa caag la isku qurxiyo oo caadi ah oo loo isticmaalo wax soo saarka warshadaha.
1. Styrene-butadiene styrene waxaa loo kala saaraa sidii elastomer heerkulbeeg ah.
Sida elastomer thermoplastic, SBS si fudud ayaa loo farsameeyaa oo dib loo habeeyaa marka la kululeeyo.Marka la kululeeyo, waxay u dhaqantaa sidii balaastiig oo kale oo aad loo shaqayn karo.Qaab dhismeedkeeda (block copolymer leh laba silsiladood oo polystyrene ah) ayaa u oggolaanaya isku-darka caag adag iyo guryaha laastikada.
2. Marka la barbar dhigo caag dhaqameed vulcanized ah, isticmaalka styrene-butadiene styrene waxay kaa caawin kartaa dhimista kharashka wax soo saarka.
Waa dib loo warshadayn karaa, adkaysi u leh nabarrada oo uma baahna vulcanization.SBS si fiican ayay u da'a wayna si fudud uma xidhato, iyadoo yaraynaysa baahida dayactirka oo ka dhigaysa qayb qiimo jaban oo alaabta saqafka ah.
3. Styrene-butadiene styrene waxay aad ugu habboon tahay codsiyada saqafka.
SBS waxaa si weyn loogu isticmaalaa codsiyada saqafka sida wax ka beddelka bitumen, alaabta shaabadda dareeraha ah iyo dahaarka aan biyuhu lahayn.Heerkulka qabow, SBS waxay ahaanaysaa mid xoogan, dabacsanaan iyo adkaysi u leh qoyaanka.Marka laga soo tago saqafka, SBS waxaa loo isticmaalaa laamiga, shaabadeynta iyo dahaarka si loogu daro dabacsanaan qabow oo loo yareeyo faafinta dildilaaca.Sida hagaajinta asphalt, SBS waxay ka hortagtaa godadka iyo dildilaaca caadi ahaan ay keento shoogga kulaylka.
4. Styrene-butadiene styrene waa walxo caan ah oo loogu talagalay soosaarayaasha kabaha.
SBS waa wax aad u fiican oo soo saarista kabaha sababo badan oo isku mid ah oo ka dhigaya mid ku habboon saqafka.Kabaha kabaha, styrene-butadiene styrene waxay gacan ka geysataa badeeco xoog leh oo dabacsan oo biyaha laga celin karo.
Astaamaha ugu muhiimsan ee Jirka ee Baling Products SBS
| Darajo | Qaab dhismeedka | S/B | Jilicsan Awooda Mpa | Adag Xeebta A | MFR (g/10 daqiiqo, 200 ℃, 5kg) | Xalka Toluene Viscosity at 25℃ iyo 25%, mpa.s |
| YH-792/792E | toosan | 38/62 | 29 | 89 | 1.5 | 1,050 |
| YH-791/791E | toosan | 30/70 | 15 | 70 | 1.5 | 2,240 |
| YH-791H | toosan | 30/70 | 20 | 76 | 0.1 | |
| YH-796/796E | toosan | 23/77 | 10 | 70 | 2 | 4,800 |
| YH-188/188E | toosan | 34/66 | 26 | 85 | 6 | |
| YH-815/815E | Xiddiga u qaabaysan | 40/60 | 24 | 89 | 0.1 | |
| Wax ka beddelka waddada -2# | Xiddiga u qaabaysan | 29/71 | 15 | 72 | 0.05 | 1,050* |
| YH-803 | Xiddiga u qaabaysan | 40/60 | 25 | 92 | 0.05 | |
| YH-788 | toosan | 32/68 | 18 | 72 | 4-8 | |
| YH-4306 | Xiddiga u qaabaysan | 29/71 | 18 | 80 | 4-8 |
Fiiro gaar ah: Shayga la calaamadeeyay * waa viscosity of 15% toluene.
"E" waxay ka dhigan tahay wax soo saarka deegaanka.