Astaamaha degdega ah ee Hydroxypropyl Methyl Cellulose

Ether-ka degdegga ah ee hydroxypropyl methylcellulose waxaa loogu talagalay alaabta biyaha ku salaysan. Dusha sare ee hydroxypropyl methylcellulose ether waxaa lagu daaweeyaa glioxal hoostiisa heerkul gaar ah iyo pH. Ether-ka hydroxypropyl methyl cellulose ether ee lagu daaweeyay habkan ayaa kaliya lagu kala firdhiyaa biyo qabow oo dhexdhexaad ah iyada oo aan barar iyo viscosity lahayn, taas oo door ka ciyaarta dib u dhigista bararka. Waqtigan xaadirka ah, xalka aqueous waxaa lagu walaaqaa 5-10 daqiiqo ama Marka deegaanka xalalka (qiimaha PH) lagu hagaajiyo inuu noqdo alkaline, hydroxypropyl methylcellulose ether wuxuu bilaabaa inuu bararo oo uu dhaliyo viscosity. Noocan dusha lagu daweeyay waxaa badanaa loo yaqaannaa nooc degdeg ah.

Sifada degdega ah ee hydroxypropyl methylcellulose ayaa ah in marka ay la kulanto biyo qabow ay si dhakhso ah ugu firdhiso biyaha qabow, laakiin waxay qaadataa wakhti in maangalkeedu kor u kaco, sababtoo ah kaliya waxay ku faafisaa biyaha marxaladda hore, mana milmaan dareen la taaban karo. Viscositykeedu wuxuu gaaraa qiimaha ugu sarreeya ilaa 20 daqiiqo ama ka badan. Faa'iidada tani waa in loo isticmaalo warshad gaar ah iyada oo aan la qasin budada qallalan, ama marka loo baahdo in la milo oo biyaha kulul aan la isticmaali karin sababo la xiriira qalabka iyo sababo kale. Isla markiiba hydroxypropyl methylcellulose ayaa xalliya dhibaatadan oo kale.

Nooca degdega ah ee hydroxypropyl methylcellulose si dhakhso ah ayey ugu firdhisaa biyaha (shahaadada kala firdhisashadu waa 100%), si dhakhso ah u milmaan, ma xoqdo, gaar ahaan marxaladda dambe, xalka kolloidal wuxuu leeyahay daahfurnaan sare (ilaa 95%) iyo joogteynta weyn, kaas oo xalliya dhibaatooyinka codsiyada la taaban karo. Caqabadaha, ballaarinta goobta codsiga, sida codsiga ku jira xabagta dhismaha, codsiga isku dhafka dareeraha ah ee isku dhafan, iyo meelo gaar ah sida dhaqidda kiimikada maalinlaha ah.

Waxaan soo bandhignay qalabka wax soo saarka horumarsan ee adduunka iyo tignoolajiyada, waxay leeyihiin khad wax soo saar casri ah oo ether cellulose ah iyo budada cinjirka dib loo cusboonaysiin karo, waxaanan hubinay inaan siino isticmaaleyaasha alaabada ku qanacsan nidaamka xakamaynta tayada adag, nidaamka tijaabada iyo adeegga goobta ku habboon. Hadda badeecooyinka hormoodka ah waa hydroxypropyl methylcellulose HPMC, hydroxyethyl cellulose HEC, hydroxypropyl istaarijka ether HPS, taxanaha budada cinjirka dib loo cusboonaysiin karo. Alaabooyinka waxaa si weyn loogu isticmaalaa dhismaha, warshadaha kiimikada, rinjiga, warshadaha kiimikada maalinlaha ah, warshadaha militariga iyo beeraha kale, oo siday u kala horreeyaan waxaa loo sameeyaa wakiilada filim-samaynta, xabagta, kala-firdhinta, xasilinta, dhumucyada, iwm.

Ku tiirsanaanta tayada badeecadeeda gaarka ah iyo heerka iyo saamaynta ay ku leedahay warshadaha wax lagu daro ee budada qalalan ee dhismaha, iyo iyada oo laga duulayo dhismaha had iyo jeer ilaalinta himilooyinka shirkadda ee tayada marka hore, waxay hadda la shaqaynaysaa shirkadaha caalamiga ah iyo kuwa gudaha ee caanka ah ee alaabooyinka dhamaystirka ah. Hawlgallada taageeraya: fiber polypropylene, fiber alwaax, istaarijka ether la beddelay, budada alkolada polyvinyl, budada defoamer, yareeyaha biyaha, celiyaha biyaha, qaabka calcium iyo waxyaabo kale oo lagu daro budada qalalan.