Focus on Cellulose ethers

Haysashada biyaha ee hydroxypropyl methylcellulose (HPMC) miyay ka duwanaan doontaa xilliyada kala duwan?

Hydroxypropyl methyl cellulose ether (HPMC) waxay leedahay shaqada haynta biyaha iyo dhumucdooda ee madaafiicda sibidhka iyo gypsum-ku salaysan, waxayna si wax ku ool ah u wanaajin kartaa adhesion iyo caabbinta toosan ee alaabta hoobiye.

Waxyaabaha ay ka midka yihiin heerkulka gaaska, heerkulka iyo heerka cadaadiska hawadu waxay saameyn xun ku leeyihiin heerka uumiga ee qoyaanka ka yimaada hoobiye sibidhka iyo alaabta ku salaysan gypsum. Sidaa darteed, xilli kasta, waxaa jira xoogaa kala duwanaansho ah oo lagu daro qadar isku mid ah alaabta hydroxypropyl methylcellulose ether (HPMC) si loo ilaaliyo waxtarka biyaha.

Shubitaanka shubka ah, saameynta qufulka biyaha waxaa lagu hagaajin karaa iyadoo la kordhinayo lana yareynayo socodka jajabka. Heerka haynta biyaha ee hydroxypropyl methyl cellulose ether heerkulka sare waa qiimaha index ee muhiimka ah si loo kala saaro tayada hydroxypropyl methyl cellulose ether.

Alaabooyinka hydroxypropyl methylcellulose (HPMC) oo tayo sare leh ayaa si wax ku ool ah u xalin kara dhibaatada haynta biyaha heerkulka sare. Xilliyada heerkulka sare, gaar ahaan meelaha kulul iyo qoyan iyo dhismaha chromatography, tayada sare leh ee hydroxypropyl methylcellulose ether (HPMC) ayaa loo baahan yahay si loo hagaajiyo haynta biyaha ee slurry.

Tayada sare ee hydroxypropyl methylcellulose ether (HPMC) waa mid aad u wanaagsan, iyo kooxaha methoxyl iyo hydroxypropyl si siman loo qaybiyey on silsilad qaab-dhismeedka kelli ee methylcellulose, taas oo kor u qaadi kara jiilka ee molecules oxygen on hydroxyl iyo ether bonds. Awood u lahaanshaha la shaqaynta curaarta covalent.

Waxay si wax ku ool ah u xakameyn kartaa uumiga biyaha ee ay keento cimilada kulul waxayna gaari kartaa saameyn sare oo quful biyaha ah. Hydroxypropyl methylcellulose (HPMC) oo tayo sare leh ayaa loo isticmaali karaa farshaxanno isku qasan iyo malaastaan.

Ku dabool dhammaan qaybaha adag si aad u sameysid filim qoyan, qoyaanka ku jira habka caadiga ah ayaa si tartiib tartiib ah loo sii deyn doonaa wakhti dheer, oo ka falceliya walxaha organic iyo kolajka si loo hubiyo xoojinta isku-xidhka iyo xoogga xajinta.

Sidaa darteed, si loo badbaadiyo biyaha goobta dhismaha xagaaga kulul, waa in aan ku darno tayo sare leh hydroxypropyl methylcellulose (HPMC) alaabta sida ku cad cuntada, haddii kale, waxay noqon doontaa sabab u ah la'aanta xinjirowga, hoos u xoogga, dildilaaca, durbaan gaaska. iyo dhibaatooyinka kale ee tayada alaabta ee ay keento qalajinta degdega ah.

Tani waxay sidoo kale kordhisaa dhibka dhismaha ee shaqaalaha. Marka heerkulku hoos u dhaco, qadarka hydroxypropyl methylcellulose ether (HPMC) ayaa si tartiib tartiib ah hoos ugu dhacaya si loo gaaro qoyaan isku mid ah.


Waqtiga boostada: Abriil-11-2023
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