PVC Heerka HPMC
PVCdarajada HPMC Hydroxypropyl Methylcellulose waa nooc polymer ah oo leh isticmaalka ugu badan iyo waxqabadka ugu sarreeya ee dhammaan noocyada cellulose. Waxaa si weyn loogu isticmaalaa beeraha kala duwan ee warshadaha iyo nolol maalmeedka. Waxaa had iyo jeer loo yaqaan "MSG warshadaha".
Hydroxypropyl methyl cellulose (HPMC) waa mid ka mid ah firdhiyasha ugu muhiimsan ee warshadaha polyvinyl chloride (PVC). Inta lagu jiro joojinta polymerization of vinyl chloride, waxay yarayn kartaa xiisadda dhexda ah ee u dhaxaysa VCM iyo biyaha waxayna ka caawin kartaa vinyl chloride monomers (VCM) inay si isku mid ah u kala firdhiso dhexdhexaadiyaha aqueous; waxay ka hortagtaa dhibcaha VCM inay ku biiraan marxaladda hore ee habka polymerization; waxay ka hortagtaa walxaha polymerka inay ku biiraan marxaladda dambe ee habka polymerization. Nidaamka polymerization ee joojinta, waxay ka ciyaartaa doorka kala firdhinta iyo ilaalinta Doorka labanlaabka ah ee xasiloonida.
polymerization-ka hakinta VCM, dhibcaha polymerization-ka hore iyo qaybaha dhexe iyo kuwa dambeba way fududahay in la isku duubo bilowga, markaa wakiilka ilaalinta kala firdhiso waa in lagu daraa nidaamka polymerization hakinta VCM. Marka la eego habka isku-dhafka go'an, nooca, dabeecadda iyo qadarka kala-baxa ayaa noqday qodobbada muhiimka ah ee lagu xakameynayo sifooyinka qaybaha PVC.
Tilmaamaha Kiimikada
| PVC heerka HPMC Tilmaamid | HPMC60E ( 2910) | HPMC65F( 2906) | HPMC75K( 2208) |
| Heerkulka jel (℃) | 58-64 | 62-68 | 70-90 |
| Methoxy (WT%) | 28.0-30.0 | 27.0-30.0 | 19.0-24.0 |
| Hydroxypropoxy (WT%) | 7.0-12.0 | 4.0-7.5 | 4.0-12.0 |
| Viscosity (cps, 2% Xalka) | 3, 5, 6, 15, 50,100, 400,4000, 10000, 40000, 60000,100000,150000,200000 | ||
Heerka Alaabta:
| PVC heerka HPMC | Viscosity (cps) | Odhaah |
| HPMC60E50(E50) | 40-60 | HPMC |
| HPMC65F50 (F50) | 40-60 | HPMC |
| HPMC75K100 (K100) | 80-120 | HPMC |
Astaamaha
(1)Heerkulka polymerization: Heerkulka polymerization wuxuu asal ahaan go'aamiyaa celceliska miisaanka kelli ee PVC, kala firdhisana asal ahaan wax saamayn ah kuma laha miisaanka kelliga. Heerkulka jel ee kala firdhiyey ayaa ka sarreeya heerkulka polymerization si loo hubiyo kala firdhisanaanta polymer-ka.
(2) Tilmaamaha qaybta: dhexroorka qayb ka mid ah, qaab-dhismeedka, porosity, iyo qaybinta qaybtu waa tilmaamayaasha muhiimka ah ee tayada SPVC, kuwaas oo la xidhiidha agitator / design reactor, polymerization saamiga biyaha-ilaa-saliid, nidaamka kala firidhsan iyo heerka beddelka kama dambaysta ah ee VCM, ee kaas oo nidaamka kala firdhiyey uu si gaar ah muhiim u yahay.
(3) Kicin: Sida nidaamka kala-firdhinta, waxay saameyn weyn ku leedahay tayada SPVC. Sababtoo ah xajmiga dhibcaha VCM ee biyaha, xawaaraha kicinta ayaa kordha oo cabbirka dhibcaha ayaa hoos u dhacaya; marka xawliga kicinta uu aad u sarreeyo, dhibciyayaashu way isu geyn doonaan oo saamayn doonaan qaybaha ugu dambeeya.
(4) Nidaamka ilaalinta kala firdhinta: Nidaamka ilaalinta wuxuu ilaaliyaa dhibcaha VCM ee marxaladda hore ee falcelinta si looga fogaado isku darka; PVC-ga la soo saaray ayaa ku soo qulqulaya dhibcaha VCM, iyo nidaamka kala firdhinta ayaa ilaaliya kor u kaca qaybaha la kantaroolo, si loo helo qaybaha ugu dambeeya ee SPVC. Nidaamka kala firdhisku wuxuu u qaybsan yahay nidaamka kala firdhinta ugu muhiimsan iyo habka fidinta caawimada. Qaybaha ugu muhiimsan ayaa leh shahaadada alkolysis ee sare ee PVA, HPMC, iwm, kuwaas oo saameeya waxqabadka guud ee SPVC; nidaamka kala firdhinta caawiye ayaa loo isticmaalaa si loo hagaajiyo sifooyinka qaar ka mid ah qaybaha SPVC.
(5) Nidaamka kala firdhisan ee ugu muhiimsan: Waa biyo-milmi kara waxayna dejiyaan dhibcaha VCM iyagoo yareynaya xiisadda dhexda ah ee u dhaxaysa VCM iyo biyaha. Hadda ku jira warshadaha SPVC, kala firdhiyaashooda ugu waaweyn waa PVA iyo HPMC. Heerka PVC HPMC waxay leedahay faa'iidooyinka qiyaasta hooseeya, xasilloonida kulaylka iyo waxqabadka caagagga wanaagsan ee SPVC. Inkasta oo ay qaali tahay, haddana aad baa loo isticmaalaa. Heerka PVC HPMC waa wakiilka ilaalinta kala firidhsan ee muhiimka ah ee isku dhafka PVC.
Baakadaha
Tbaakooyinka caadiga ah waa 25kg / durbaan
20'FCL: 9 tan oo baalaysan; 10 tan oo aan baakadaysan
40'FCL:18tan oo leh palletized;20tan aan palette lahayn.
Kaydinta:
Ku kaydi meel qabow oo qallalan oo ka hooseysa 30 ° C oo laga ilaaliyo qoyaanka iyo cadaadiska, maadaama alaabtu tahay heerkulbeeg, wakhtiga kaydinta waa inuusan ka badnaan 36 bilood.
Qoraallada badbaadada:
Xogta kor ku xusan waxay waafaqsan tahay aqoontayada, laakiin ha ka nadiifin macaamiisha si taxadar leh u hubiya dhammaan isla markiiba marka la helo. Si aad isaga ilaaliso diyaarinta kala duwan iyo alaabta ceeriin ee kala duwan, fadlan samee baaritaan dheeraad ah ka hor intaadan isticmaalin.
Waqtiga boostada: Jan-01-2024