1. Yintoni eyona njongo ye-hydroxypropyl methyl cellulose (HPMC)?
I-HPMC isetyenziswa ngokubanzi kwizinto zokwakha, iingubo, ii-resin zokwenziwa, iiseramikhi, amayeza, ukutya, amalaphu, ezolimo, izithambiso, icuba kunye namanye amashishini. I-HPMC inokohlulwa ibe yibakala lokwakha, ibakala lokutya kunye nebakala lezonyango ngokwenjongo yalo. Okwangoku, uninzi lweemveliso zasekhaya zikumgangatho wokwakha. Kwibakala lokwakha, i-putty powder isetyenziswe kwisixa esikhulu, malunga ne-90% isetyenziselwa i-putty powder, kwaye intsalela isetyenziselwa udaka lwesamente kunye neglue.
2. Kukho iindidi ezininzi ze-hydroxypropyl methyl cellulose (HPMC). Uthini umahluko phakathi kokusetyenziswa kwazo?
HPMC inokohlulwa ibe uhlobo ngoko nangoko kunye nohlobo hot-nyibilika. Iimveliso zohlobo olukhawulezayo zihlakazwa ngokukhawuleza emanzini abandayo kwaye zinyamalale emanzini. Ngeli xesha, i-liquid ayinayo i-viscosity, kuba i-HPMC ihlakazekile kuphela emanzini ngaphandle kokuchithwa kwangempela. Malunga nemizuzu emi-2, i-viscosity ye-liquid yanda ngokuthe ngcembe, yenza i-colloid ebonakalayo ebonakalayo. Imveliso eshushu-encibilikayo, xa idibana namanzi abandayo, inokusasazeka ngokukhawuleza emanzini ashushu kwaye ilahleke emanzini ashushu. Xa amaqondo obushushu ehla ukuya kwiqondo elithile lobushushu, i-viscosity ibonakala kancinane de i-viscous colloid ecacileyo yenziwe. Uhlobo lwe-hot-melt lunokusetyenziswa kuphela kwi-putty powder kunye nodaka. Kwiglue yolwelo kunye nepeyinti, i-clumping iyenzeka kwaye ayinakusetyenziswa. Uhlobo olukhawulezileyo lunoluhlu olubanzi lwezicelo. Ingasetyenziswa kwi-putty powder kunye nodaka, kunye nakwiglue elulwelo kunye nepeyinti. Akukho contraindication.
3. Ziziphi iindlela zokuchithwa kwe-hydroxypropyl methylcellulose HPMC?
Indlela yokuchithwa kwamanzi ashushu: Ekubeni i-HPMC ayinyibiliki emanzini ashushu, i-HPMC inokuchithwa ngokufanayo emanzini ashushu kwinqanaba lokuqala, kwaye ngokukhawuleza ichithe ngexesha lokupholisa. Iindlela ezimbini eziqhelekileyo zichazwa ngolu hlobo lulandelayo:
1). Yongeza i-1/3 okanye i-2/3 yomlinganiselo ofunekayo wamanzi kwisikhongozeli kwaye uyifudumeze ukuya kuma-70°C. ukusasaza i-HPMC ukulungiselela udaka lwamanzi ashushu; uze ungeze inani eliseleyo lamanzi abandayo kumanzi ashushu Kwi-slurry, pholisa umxube emva kokuvuselela.
Indlela yokuxuba umgubo: Xuba umgubo we-HPMC kunye nomthamo omkhulu wezinye izinto zomgubo, xuba ngokucokisekileyo kunye ne-blender, emva koko wongeze amanzi ukuze unyibilike, emva koko i-HPMC inokunyibilika ngeli xesha ngaphandle kokudibanisa kunye nokudibanisa, kuba ikona nganye encinci, kukho into encinci. ye-HPMC Umgubo uya kuchithwa ngokukhawuleza xa udibana namanzi. -I-putty powder kunye nabavelisi bodaka basebenzisa le ndlela. [I-Hydroxypropyl methyl cellulose (HPMC) isetyenziswa njenge-thickener kunye ne-agent egcina amanzi kwi-putty powder mortar.
Beka umlinganiselo ofunekayo wamanzi ashushu kwisikhongozeli kwaye ufudumale ukuya kuma-70°C. Ngokuthe ngcembe yongeza i-hydroxypropyl methylcellulose ngokushukumisa kancinane, qalisa i-HPMC edadayo phezu kwamanzi, kwaye ngokuthe ngcembe wenze i-slurry, kwaye upholise uludaka ngokushukumisa.
Ixesha lokuposa: Nov-16-2021