Imibuzo emi-4 malunga ne-HPMC

1. Loluphi usetyenziso oluphambili lwe-hydroxypropyl methylcellulose (HPMC)?
I-HPMC isetyenziswa ngokubanzi kwizinto zokwakha, iingubo, iireyini zokwenziwa, iiseramikhi, amayeza, ukutya, impahla, ezolimo, izinto zokuthambisa, icuba kunye namanye amashishini. I-HPMC inokohlulwa ibe yibakala lolwakhiwo, ibakala lokutya kunye nebakala lamayeza ngokokusetyenziswa kwayo. Okwangoku, uninzi lwemveliso yasekhaya yaseTshayina ikwinqanaba lokwakha. Kwinqanaba lokwakha, i-putty powder isetyenziswe ngobuninzi, malunga ne-90% ye-putty powder kunye nenye i-samente yodaka kunye ne-adhesive tile.

2. Ziziphi izizathu ze-blistering kwi-putty powder ngexesha lokusetyenziswa kwe-HPMC kwi-putty powder?
I-HPMC isebenza njenge-thickener, igcina amanzi kunye nomakhi kumgubo weputty. Ayibandakanyi nakuphi na ukusabela.

Izinto ezibangela amadyunguza: 1. Amanzi amaninzi. 2. Umaleko ongezantsi awusomile, vele ukhuphe umaleko kumgangatho ophezulu, obuye uhlambuluke ngokulula.

HPMC

3. Zingaphi iindidi ze-hydroxypropyl methylcellulose (HPMC) ezikhoyo? Yintoni umahluko phakathi kwazo?
I-HPMC inokohlulwa ibe yi-soluble esheshayo neshushu. Iimveliso ezinyibilikayo ngokukhawuleza, zichithe ngokukhawuleza kwaye zinyamalale emanzini emanzini abandayo. Ngeli xesha, i-liquid ayinayo i-viscosity njengoko i-HPMC ichithwa ngokulula emanzini kwaye ayinyibiliki. Emva kwemizuzu emi-2, i-viscosity ye-liquid iyanda ngokuthe ngcembe, yenza i-gel viscous ecacileyo. Imveliso eshushu e-soluble inokusasazeka ngokukhawuleza emanzini ashushu kwaye iphele emanzini ashushu. Njengoko iqondo lokushisa liyehla kwiqondo elithile lobushushu, i-viscosity ibonakala ngokuthe ngcembe de i-gel viscous ecacileyo yenziwe.

Uhlobo olushushu oluncibilikayo lunokusetyenziswa kuphela kwi-putty powders kunye nodaka. Kwiiglues zamanzi kunye neepeyinti, i-caking iyenzeka kwaye ayinakusetyenziswa. Uhlobo olukhawulezayo lunoluhlu olubanzi lwezicelo kwaye lunokusetyenziswa kwi-putty powders kunye ne-mortars kunye nakwiglue ezimanzi kunye neepeyinti.

4. Ungamiselwa njani umgangatho we-hydroxypropyl methylcellulose (HPMC) ngokulula nangokubonakalayo?
(1) Umxhuzulane okhethekileyo: Okukhona uphezulu umxhuzulane othile, kokukhona uphucuka umgangatho.
(2) Ubumhlophe: Iimveliso ezininzi ezisemgangathweni zinobumhlophe obuhle. Ngaphandle kwezo zinee-arhente ezimhlophe ezongeziweyo. Iiarhente ezimhlophe zinokuchaphazela umgangatho.
(3) Ukulunga: Okukhona ukucoleka, kokukhona umgangatho ulunge ngakumbi. Ukulunga kweHPMC yethu iqhele ukuba yi-80 mesh kunye ne-100 mesh, i-120 mesh iyafumaneka.
(4) Ukuhanjiswa: Beka i-HPMC emanzini ukwenza ijeli ecacileyo kwaye ijonge ukuhanjiswa kwayo. Okukhona ukuhanjiswa okukhulu, kokukhona kuncinci okunganyibilikiyo. Iireactors ezithe nkqo zihlala zinothumelo olungcono kwaye iireactors ezixwesileyo azidluliseli kakuhle, kodwa oku akuthethi ukuba umgangatho wemveliso wereactors eme nkqo ungcono kunezinye iindlela zokuvelisa. Kukho izinto ezininzi ezimisela umgangatho wemveliso kwii-reactors ezinqamlekileyo, ezinomxholo ophezulu we-hydroxypropyl kunye nomxholo ophezulu we-hydroxypropyl, eyona nto ingcono yokugcina amanzi.