Waa maxay sababaha saameeya daahirka hydroxypropyl methylcelrenose?

Daahirnaanta hydroxypropyl methylrcellellase ee dhisidda mashaafinta kuleylka kuleylka iyo budada ah waxay saameyn ku leedahay tayada dhismaha injineerinka, markaa waa maxay sababaha saameeya daahirka methylcellosurose? Ka caawi inaad ka jawaabto su'aashan maanta.

Geedi socodka wax soo saarka ee hydroxypropylylrcellellalose, oksijiinka haraaga ah ee ku-soo-celinta ayaa sababi doonta nabaad-guurka hydroxypropylyl methylrcylose, laakiin haraaga haraaga ah ayaa xaddidan, ilaa inta moleekulka jaban ay yihiin kuwo aad u adag, ma ahan mid aad u adag. Musiibo. Heerka fadhiyada biyaha ugu muhiimsan wuxuu leeyahay wax badan oo ay ku qabato waxa ku jira hydroxypropyl. Warshadaha qaarkood ayaa kaliya doonaya inay yareeyaan qiimaha iyo qiimaha, oo aan diyaar u ahayn in la kordhiyo waxa ku jira hydroxypropopopyl, si tayada aysan u gaari karin heerka alaabada shisheeye ee la mid ah.

Heerka haynta ee biyaha ee hydroxypropylypelrellase sidoo kale waxay leedahay xiriir weyn oo lala yeesho hydroxypropyl, oo nidaamka fal-celinta oo dhan, hydroxypropyl ayaa sidoo kale go'aamisa heerka haynta biyaha ee hydroxypropyl. Saamaynta alkalizing, saamiga methyl chloride to prempylene oxide, uruurinta alkali iyo saamiga biyaha si loo safeeyo cudbiyada dhammaantood waxay go'aaminayaan astaamaha sheyga.

Tayada alaabada ceyriinka, saameynta alantalizing, xakameynta saamiga geedi socodka, saamiga dareeraha iyo saameynta ay ku dartay in lagu daro caano-karka methy-ka, qaarna waa huruud, qaarna waa huruud oo huruud ah. Si loo xalliyo, ka-qabso qodobbada kore. Mararka qaarkood aashitada aashitada ayaa si daran u saameyn kara tallaabada. Waxaa ugu wanaagsan in la isticmaalo aashitada acetic acid ka dib dilid. Saamaynta ugu weyn ayaa ah in kareysiga fal-celinta ay tahay mid la mid ah iyo in saamiga nidaamka uu deggan yahay (waxyaabaha qaarkood ay leeyihiin nuxurka qoyaanka aan xasilloonayn, sida dareeraha loo isticmaalo dib-u-warshadaynta). Arrimo badan ayaa ku jira ciyaarta. Deganaanshaha qalabka iyo hawlgalka hawl wadeenada si wanaagsan loo tababaray waa inay soo saaraan wax soo saar deggan. Tartanka iftiinka ma dhaafi doono kala-duwanaanta ± 2%, iyo beddelka isku-darka isku-darka kooxaha la beddeli karo waa in si wanaagsan loo xakameeyaa. Halkii labiska labis ahaan, baatinka ayaa runtii fiicnaan doona.

Sidaa darteed, tayada wax soo saarka wanaagsan waxaa lagu go'aamiyaa alaabada ceyriinka, tikniyoolajiyadda wax soo saarka, iyo qodobo kale. Kaliya adoo si adag u xakameynaya mid ilaa dhamaadka alaabada ayaa la soo saari karaa tayada tayada liita.