Maxay yihiin arrimaha saameeya nadiifnimada hydroxypropyl methyl cellulose?

Dhisidda hoobiye dahaarka iyo budada putty, cabbirka nadiifinta hydroxypropyl methylcellulose waxay si toos ah u saameyneysaa tayada dhismaha injineernimada, markaa waa maxay arrimaha saameeya nadiifnimada hydroxypropyl methylcellulose? Si uu kaaga caawiyo ka jawaabista su'aashan maanta.

Habka wax soo saarka ee hydroxypropyl methylcellulose, oksijiinta ku hartay kiliyaha falcelinta waxay u horseedi doontaa hoos u dhaca hydroxypropyl methylcellulose waxayna yaraynaysaa miisaanka kelli. Si kastaba ha ahaatee, oksijiinta hadhaaga ah ayaa xaddidan, markaa ma adka in dib loogu dhejiyo unugyadii jabay. Heerka saturation ugu weyn iyo content hydroxypropyl leeyahay xiriir weyn, warshadaha qaar ka mid ah oo kaliya doonaya in ay yareeyaan qiimaha iyo qiimaha, ma doonayaan in ay hagaajiyaan content ee hydroxypropyl, si tayada ma gaari karaan heerka alaabta shisheeye la mid ah.

Heerka haynta biyaha ee hydroxypropyl methylcellulose iyo hydroxypropyl ayaa sidoo kale leh xiriir weyn, iyo dhammaan habka falcelinta, hydroxypropyl methylcellulose ayaa sidoo kale go'aamisa heerka haynta biyaha ee hydroxypropyl methylcellulose. Saamaynta alkalization, saamiga chloromethane iyo propylene oxide, xoojinta alkali iyo saamiga biyaha ee suufka la safeeyey oo dhan ayaa go'aaminaya waxqabadka alaabta.

Tayada alaabta ceeriin, saamaynta alkalization, xakamaynta saamiga habka, saamiga dareeraha iyo saamaynta dhexdhexaadinta, dhammaan waxay go'aamiyaan tayada hydroxypropyl methyl cellulose, qaar ka mid ah hydroxypropyl methyl cellulose sameeyey si ay u milaan ka dib markii sida caanuhu aad u daruuro, qaar ka mid ah caano cad, qaar ka mid ah huruud ah, qaar ka mid ah cad oo hufan. Haddii aad rabto inaad xalliso, wax ka beddel qodobada kor ku xusan. Mararka qaarkood acetic acid waxay si dhab ah u saameyn kartaa gudbinta, acetic acid waxaa si fiican loo isticmaalaa ka dib marka la qaso, saameynta ugu weyn ama kicinta falcelinta waa lebis, saamiga nidaamka waa mid deggan (qaar ka mid ah qoyaanka alaabta, content ma aha mid deggan, sida soo kabashada dareeraha). dhab ahaantii, arrimo badan ayaa saameeya. Iyada oo xasiloonida qalabka iyo hawlgalka hawl-wadeennada tababaran, alaabooyinka la soo saaray waa inay ahaadaan kuwo aad u deggan. Gudbinta waa in aanay dhaafin ± 2%, iyo isku midnimada beddelka ee kooxda beddelka ah waa in si fiican loo xakameeyaa. Beddelka lebbiska, gudbintu waa inay noqotaa mid wanaagsan.

Sidaa darteed, tayada alaabta wanaagsan waxaa lagu go'aamiyaa alaabta ceeriin, tignoolajiyada wax soo saarka, iyo arrimo kale. Kaliya xakameyn adag oo ka bilaabma hal gees ilaa dhamaadka ayaa soo saari kara alaab tayo leh.