Tilmaanta viscosity ee hydroxypropyl methylcelrelose waa tusmad aad u muhiim ah. Muuqaalku ma matalo daahirka. Muuqaalka unugyada unugyada cellulose HPMC waxay kuxirantahay geedi socodka wax soo saarka. Magaalo adeegsi kala duwan waa inay ka doortaan unugyada cellc hpmc vmc vismc kala duwan, ee ma aha kuwa sare ee qaboojiyaha unugyada unugyada, sida ugu fiican! Waxa sax ah waa sax!
1. Xakamaynta viscosity
Ka-hortagga Viscoxypropyl Myylcelrellose ma soo saari karto cellole aad u sarreeya oo keliya faakiynta iyo beddelka nitrogen ee wax soo saarka. Guud ahaan, soo saarista mincosity viscosis-ka ee Shiinaha lama xakamayn karo. Si kastaba ha noqotee, haddii raad-raac odayjibjiin oksigen lagu rakibi karo jeble, soosaarka mowqifka ayaa si dabiici ah loo xakameyn karaa.
2. Adeegsiga wakiilka urur
Intaas waxaa sii dheer, tixgelinta xawaaraha beddelka nitrogen, way fududahay in la soo saaro alaabooyin viscosity-ka ah si kasta oo hawadu u jirto. Dabcan, heerka polymomanmization ee suufka la safeeyey ayaa waliba muhiim ah. Haddii taasi shaqeyn weydo, ka dib ku samee ururka hydrophobic. Waxaa jira wakiilo jaaliyadeed oo ka jira dalka Shiinaha. Noocee ah wakiilka urur ee doorta inuu saameyn weyn ku leeyahay waxqabadka wax soo saarka ugu dambeeya.
3. Hydroxypropyl
Oksijiinka haraaga ah ee ku-noqda ayaa sababa nabaad-guurka unugyada unugyada iyo hoos u dhaca miisaanka molikalalba, laakiin haraaga haraaga ah waa mid xadidan, illaa iyo inta moleekulka jabay ay dib loo soo celiyo, ma ahan wax adag in la sameeyo viscosity. Si kastaba ha noqotee, heerka fadhigu wuxuu leeyahay wax badan oo ay ku yeeshaan waxa ku jira hydroxypropyl. Warshadaha qaar ayaa kaliya doonaya inay yareeyaan qiimaha iyo qiimaha, laakiin aysan diyaar u ahayn inay kordhiyaan waxa ku jira hydroxypropopyl, si tayada aysan u gaari karin heerka badeecada shisheeye ee la mid ah.
4. Waxyaabaha kale
Heerka keydka biyaha ee sheygu wuxuu leeyahay xiriir weyn oo lala yeesho hydroxypropyl, laakiin nidaamka fal-celinta oo dhan, waxay sidoo kale go'aamineysaa heerka haynta biyaha, saameynta loo yaqaan 'betyl chloride' iyo prethylne chloride iyo prethylene chloride iyo ka-hortagga alkali iyo haynta biyaha. Saamiga si loo safeeyo suufku wuxuu go'aamiyaa waxqabadka sheyga.
Waqtiga Post: apr-04-2023