Kodi ndi zinthu ziti zomwe zimakhudza kuyatsa kwa hydroxypropyl methylcellulose?

Kuwala kwa hydroxypropyl methylcellulose kumakhudzidwa makamaka ndi mfundo izi:

1. Ubwino wa zipangizo.

Chachiwiri, zotsatira za alkalization.

3. Chiŵerengero cha ndondomeko

4. Gawo la zosungunulira

5. Zotsatira za neutralization

Zogulitsa zina zimakhala ndi mitambo ngati mkaka utatha kusungunuka, zina zimakhala zoyera ngati zamkaka, zina zimakhala zachikasu, ndipo zina zimakhala zomveka komanso zowonekera…Nthawi zina acetic acid imatha kukhudza kwambiri kufalikira kwa kuwala.Ndi bwino kugwiritsa ntchito asidi acetic pambuyo dilution.Chochititsa chidwi kwambiri ndi chakuti ngati zomwe zimachitikazo zimagwedezeka mofanana komanso ngati chiŵerengero cha dongosolo chimakhala chokhazikika (zina zimakhala ndi chinyezi ndipo zomwe zili ndi zosakhazikika, monga zosungunulira zomwe zimagwiritsidwa ntchito pobwezeretsanso).Ndipotu, pali zinthu zambiri zomwe zimakhudza.Ngati zidazo zili zokhazikika ndipo ogwira ntchito akuphunzitsidwa bwino, kupanga kuyenera kukhala kokhazikika.Kupatsirana kwa kuwala sikudzapitirira kuchuluka kwa ± 2%, ndipo kufanana kwamagulu olowa m'malo kuyenera kuyendetsedwa bwino.M'malo mofanana, kuyatsa kopepuka kungakhale kwabwino.

Zinthu Zomwe Zimakhudza Viscosity ya Hydroxypropyl Methyl Cellulose

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 kutha kuwongoleredwa mwachinyengo.

zopangidwa.Kuonjezera apo, poganizira kuthamanga kwa nayitrogeni m'malo mwake, ndikosavuta kupanga zinthu zowoneka bwino mosasamala kanthu kuti makinawo ali ndi mpweya wotani.Zachidziwikire, kuchuluka kwa ma polymerization a thonje woyengedwa ndikofunikiranso.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.Mpweya wotsalira wa okosijeni mu riyakitala umayambitsa kuwonongeka kwa cellulose ndi kuchepa kwa kulemera kwa maselo, koma mpweya wotsalirawo ndi wochepa, malinga ngati mamolekyu osweka alumikizidwanso, sikovuta kupanga kukhuthala kwakukulu.Komabe, kuchuluka kwa machulukidwe kumakhudzana kwambiri ndi zomwe zili mu hydroxypropyl.Mafakitale ena amangofuna kuchepetsa mtengo ndi mtengo, koma sakufuna kuwonjezera zomwe zili mu hydroxypropyl, kotero kuti khalidweli silingathe kufika pamlingo wazinthu zakunja zofanana.Mlingo wosungira madzi wa mankhwalawa uli ndi ubale wabwino kwambiri ndi hydroxypropyl, koma panjira yonseyi, imatsimikiziranso kuchuluka kwa kusungirako madzi, zotsatira za alkalization, chiŵerengero cha methyl chloride ndi propylene oxide, ndende ya alkali ndi kusunga madzi.Chiŵerengero cha thonje woyengedwa chimatsimikizira ntchito ya mankhwala.