Hydroxypropyl methylcellulose (HPMC ee gaaban) waa ether isku dhafan oo muhiim ah, kaas oo ah polymer-ka aan-ionic biyo-milmi leh, waxaana si ballaaran loogu isticmaalaa cuntada, daawada, warshadaha kiimikada maalinlaha ah, daahan, falcelinta polymerization iyo dhismaha sida joojinta kala firdhisan, dhumucdi, emulsize, xasilinta iyo xabagta iwm, waxaana suuqa gudaha ka jira farqi weyn.
Sababtoo ah HPMC waxay leedahay sifooyin aad u fiican sida dhumucdi, emulsification, sameynta filim, kolloid ilaalin, haynta qoyaanka, adhesion, caabbinta enzyme iyo inertness dheef-shiid kiimikaadka, waxaa si ballaaran loo isticmaalaa daaha, falcelinta polymerization, qalabka dhismaha, wax soo saarka saliidda, dunta, cuntada, daawada. Isticmaalka dhoobada maalinlaha ah, qalabka elegtarooniga ah iyo abuurka beeraha iyo waaxyo kale.
Balaabta dhoobada
Qalabka dhismaha, HPMC ama MC waxaa badanaa lagu daraa sibidhka, hoobiye, iyo hoobiye si loo hagaajiyo dhismaha iyo guryaha haysashada biyaha.
HPMC waxaa loo isticmaali karaa:
1).Walalaha xabagta iyo xabagta ee sharoobada xabagta ku salaysan ee gypsum;
2).Isku-xidhka lebenka sibidhka ku salaysan, tiirarka iyo aasaaska;
3).stucco ku salaysan balaastarka;
4).balastar dhisme ku salaysan sibidhka;
5).In qaabka rinjiga iyo rinjiga ka saara.
Xabagta dhoobada dhoobada ah
HPMC 15.3 qaybood
Perlite 19.1 qaybood
amides dufan leh iyo xeryahooda thio ee meertada ah 2.0 qaybood
dhoobo 95.4 qaybood
Xawaash Silica (22μ) 420 qaybood
450.4 qaybood oo biyo ah
Loo isticmaalo sibidhka oo ku xidhan leben aan organic ahayn, tiles, dhagxaan ama sibidh:
HPMC (degree of kala firdhiso 1.3) 0.3 qaybood
Catelan cement 100 qaybood
Ciid Silica 50 qaybood
50 qaybood oo biyo ah
Loo isticmaalo wax lagu daro sibidhka oo aad u xoog badan:
Catelan cement 100 qaybood
Asbestos 5 qaybood
Dayactirka khamriga polyvinyl 1 qayb
Calcium silicate 15 qaybood
dhoobo 0.5 qaybood
32 qaybood oo biyo ah
HPMC 0.8 qaybood
Warshadaha rinjiga
Warshadaha rinjiga, HPMC waxaa inta badan loo isticmaalaa rinjiga cinjirka ah iyo qaybaha rinjiga biyaha milmi kara sida wakiilka samaynta filim, dhumuc weyn, emulsifier iyo xasiliye.
Joojinta Polymerization ee PVC
Beerta leh isticmaalka ugu badan ee alaabta HPMC ee dalkayga waa joojinta polymerization of vinyl chloride.Xakamaynta polymerization ee chloride vinyl, nidaamka firdhinta ayaa si toos ah u saameeya tayada alaabta PVC-ga iyo farsamaynta iyo alaabta;waxay hagaajin kartaa xasiloonida kulaylka ee resinka waxayna xakameyn kartaa qaybinta cabbirka walxaha (taas oo ah, hagaajinta cufnaanta PVC).Qadarka HPMC wuxuu xisaabiyaa 0.025% ~ 0.03% wax soo saarka PVC.
Xabagta PVC ee ay diyaarisay HPMC oo tayo sare leh, marka lagu daro hubinta in wax qabadku la kulmo heerka qaranka, sidoo kale wuxuu leeyahay sifooyin jireed oo wanaagsan, astaamo walxaha aad u fiican iyo dabeecad dhalaalaysa oo aad u fiican.
Owarshadaha
Warshadaha kale inta badan waxaa ka mid ah waxyaabaha la isku qurxiyo, soo saarista saliidda, saabuunta, ceramics-ka guryaha iyo warshado kale.
Water milmay
HPMC waa mid ka mid ah polymers-ka biyaha ku milma, iyo milmahoodu biyuhu waxay la xidhiidhaan waxa ku jira kooxda metoxyl.Marka waxa ku jira kooxda methoxyl ay hooseyso, waxaa lagu milmi karaa alkali xoog leh mana lahan barta gelation thermodynamic.Marka la kordhiyo maadada methoxyl, waxay aad ugu nugul tahay bararka biyaha oo ay ku milmaan alkali milo iyo alkali daciif ah.Marka maadada methoxyl ay tahay>38C,waxaa lagu milmi karaa biyo,sidoo kale waxaa lagu milmi karaa hydrocarbons halogenated ah.Haddii aashitada xilliyeed lagu daro HPMC, HPMC waxay si dhakhso ah ugu firdhi doontaa biyaha iyada oo aan soo saarin walxo keega oo aan milmi karin.Tani waxay inta badan sabab u tahay xaqiiqda ah in aashitada xilliyeedku ay leedahay kooxaha dihydroxyl ee booska ortho ee glycogen kala firdhiyey.
Waqtiga boostada: Dec-07-2022