Zinthu Zomwe Zimakhudza Kupanga kwa HPMC mu Kukhuthala

1. Kulamulira Kukhuthala

Kukhuthala kwakukuluhydroxypropyl methylcelluloseSizingapange cellulose yambiri pongochotsa mpweya woipa ndikuyikamo nayitrogeni. Komabe, ngati chida choyezera mpweya wochepa chingayikidwe mu ketulo, kupanga kwa kukhuthala kumatha kulamulidwa mwa njira yopangidwa.

2. Kugwiritsa ntchito othandizira

Kuphatikiza apo, poganizira liwiro losinthira la nayitrogeni, komanso nthawi yomweyo, kulimba kwa mpweya wa dongosololi ndikwabwino kwambiri, ndipo ndikosavuta kupanga zinthu zokhuthala kwambiri. Zachidziwikire kuti kuchuluka kwa polymerization ya thonje loyengedwa ndikofunikira kwambiri. Ngati sikukugwirabe ntchito, njira yolumikizirana ndi hydrophobic imagwiritsidwa ntchito, ndipo mtundu wa associative agent womwe wasankhidwa umakhudza kwambiri magwiridwe antchito a chinthu chomaliza.

3. Kuchuluka kwa hydroxypropyl

Mpweya wotsalira mu ketulo yoyankhira umachititsa kuti cellulose iwonongeke ndipo kulemera kwa mamolekyu kumachepa, koma mpweya wotsalirawo ndi wochepa. Bola mamolekyu oswekawo atalumikizidwanso, sizovuta kupanga kukhuthala kwakukulu. Komabe, kuchuluka kwa madzi m'madzi kumakhudzana kwambiri ndi kuchuluka kwa hydroxypropyl. Mafakitale ena amangofuna kuchepetsa mtengo ndi mtengo, ndipo sakufuna kuwonjezera kuchuluka kwa hydroxypropyl, kotero mtundu wake sungafikire pamlingo wa zinthu zofanana.

4. Zinthu zina

Kuchuluka kwa madzi omwe amasungidwa mu chinthuchi kumalumikizana bwino ndi hydroxypropyl, koma pa njira yonse yogwirira ntchito, kumawonetsanso kuchuluka kwa madzi omwe amasungidwa, momwe alkali imagwirira ntchito, kuchuluka kwa methyl chloride ndi propylene oxide, kuchuluka kwa alkali ndi madzi. Kuchuluka kwa thonje loyengedwa kumawonetsa momwe chinthucho chimagwirira ntchito.