Kodi ndi zinthu ziti zomwe zimakhudza kufalikira kwa kuwala kwa hydroxypropyl methylcellulose?

Kutumiza kuwala kwa hydroxypropyl methylcellulose kumakhudzidwa kwambiri ndi mfundo zotsatirazi:

1. Ubwino wa zipangizo zopangira.

Chachiwiri, zotsatira za alkalization.

3. Chiŵerengero cha njira

4. Kuchuluka kwa zosungunulira

5. Zotsatira za kuletsa kufalikira kwa matenda

Zinthu zina zimakhala ngati mkaka zitasungunuka, zina zimakhala zoyera ngati mkaka, zina zimakhala zachikasu, ndipo zina zimakhala zowonekera bwino… Kuti muthetse vutoli, sinthani kuchokera pa mfundo zotsatirazi. Nthawi zina acetic acid imatha kukhudza kwambiri kufalikira kwa kuwala. Ndibwino kugwiritsa ntchito acetic acid mutasungunuka. Chovuta chachikulu ndichakuti ngati yankho lasunthidwa mofanana komanso ngati chiŵerengero cha dongosolo chili chokhazikika (zipangizo zina zimakhala ndi chinyezi ndipo zomwe zili mkati mwake sizikhazikika, monga chosungunulira chomwe chimagwiritsidwa ntchito pobwezeretsanso). Ndipotu, pali zinthu zambiri zomwe zikukhudza. Ngati zida zili zokhazikika ndipo ogwiritsa ntchito aphunzitsidwa bwino, kupanga kuyenera kukhala kokhazikika kwambiri. Kufalikira kwa kuwala sikudzapitirira ±2%, ndipo kufanana kwa magulu olowa m'malo kuyenera kulamulidwa bwino. M'malo mokhala ofanana, kufalikira kwa kuwala kungakhale bwino.

Zinthu Zomwe Zimakhudza Kukhuthala kwa Hydroxypropyl Methyl Cellulose

Hydroxypropyl methylcellulose yokhala ndi kukhuthala kwakukulu singapange cellulose yambiri pongogwiritsa ntchito vacuum cleaner ndikusintha nayitrogeni popanga. Kawirikawiri, kupanga cellulose yokhala ndi kukhuthala kwakukulu ku China sikungathe kulamulidwa. Komabe, ngati chida choyezera mpweya wochepa chikhoza kuyikidwa mu ketulo, kupanga kwa kukhuthala kwake kungayang'aniridwe mwaluso.

zopangidwa. Kuphatikiza apo, poganizira liwiro losinthira la nayitrogeni, ndikosavuta kupanga zinthu zokhala ndi kukhuthala kwakukulu mosasamala kanthu kuti dongosololi ndi lopanda mpweya bwanji. Zachidziwikire, kuchuluka kwa polymerization ya thonje loyengedwa ndikofunikiranso. Ngati sizikugwira ntchito, chitani ndi mgwirizano wa hydrophobic. Pali othandizira ogwirizana m'derali ku China. Mtundu wa wothandizira woti musankhe umakhudza kwambiri magwiridwe antchito a chinthu chomaliza. Mpweya wotsalira mu reactor umayambitsa kuwonongeka kwa cellulose ndi kuchepa kwa kulemera kwa mamolekyulu, koma mpweya wotsalira ndi wochepa, bola mamolekyu osweka atalumikizidwanso, sikovuta kupanga kukhuthala kwakukulu. Komabe, kuchuluka kwa kukhuta kumakhudzana kwambiri ndi kuchuluka kwa hydroxypropyl. Mafakitale ena amangofuna kuchepetsa mtengo ndi mtengo, koma sakufuna kuwonjezera kuchuluka kwa hydroxypropyl, kotero mtundu wake sungafikire pamlingo wa zinthu zakunja zofanana. Kuchuluka kwa kusunga madzi kwa chinthucho kuli ndi ubale wabwino ndi hydroxypropyl, koma pa njira yonse yochitira, imazindikiranso kuchuluka kwa kusunga madzi, mphamvu ya alkali, chiŵerengero cha methyl chloride ndi propylene oxide, kuchuluka kwa alkali ndi kusunga madzi. Chiŵerengero cha thonje loyengedwa bwino chimatsimikizira momwe zinthuzo zimagwirira ntchito.