High-viscosity hydroxypropyl methylcellulose sangatulutse mapadi okwera kwambiri pokhapokha pakupukuta ndikusintha nayitrogeni popanga. Nthawi zambiri, kupanga ma cellulose apamwamba kwambiri ku China sikungawongoleredwe. Komabe, ngati chida choyezera mpweya chitha kuyikidwa mu ketulo, kupanga mamasukidwe ake amatha kuyendetsedwa mwachinyengo. Kuphatikiza apo, poganizira kuthamanga kwa nayitrogeni m'malo mwake, ndikosavuta kupanga zinthu zowoneka bwino mosasamala kanthu kuti dongosololi ndi lopanda mpweya bwanji. Zachidziwikire, kuchuluka kwa polymerization ya thonje woyengedwa ndikofunikanso. Ngati izi sizikugwira ntchito, chitani ndi hydrophobic association. Pali othandizira othandizira mderali ku China. Ndi mtundu wanji wa othandizira omwe angasankhe ali ndi chikoka chachikulu pakuchita kwa chinthu chomaliza.
Kuwala kwa hydroxypropyl methylcellulose kumakhudzidwa makamaka ndi mfundo izi:
1. Ubwino wa zipangizo.
2. Zotsatira za alkalization.
3. Chiŵerengero cha ndondomeko.
4. Chiŵerengero cha zosungunulira.
5. Neutralizing zotsatira.
Oxygen yotsalira yomwe ili mu boiler imayambitsa kuwonongeka kwa cellulose ndi kuchepetsa kulemera kwa maselo, koma mpweya wotsalirawo ndi wochepa, ngati ungogwirizanitsa mamolekyu owonongeka, kupanga kukhuthala kwakukulu kukhala kosavuta. Komabe, mulingo wamadzi odzaza umakhalanso ndi mgwirizano wamphamvu ndi mulingo wa hydroxyproline. Mafakitale ena amangofuna kuchepetsa mtengo ndi mtengo, ndipo safuna kuonjezera zomwe zili mu hydroxyproline kuti khalidweli lisapitirire mlingo wa mankhwala opangidwa kunja. Mlingo wachitetezo wa mankhwalawa umagwirizana ndi phenol yamadzi, koma nthawi zambiri, momwe zimakhalira zimatsimikiziranso kusungika kwake, chiŵerengero cha alkali, methyl chloride ndi propylene oxide, kuchuluka kwa alkali ndi chiŵerengero cha madzi ndi thonje kumatsimikizira ntchito yake. .
Nthawi yotumiza: Apr-23-2023