Zinthu Zomwe Zimakhudza Kupanga kwa Hydroxypropyl Methylcellulose mu Kukhuthala

Chizindikiro cha kukhuthala kwa thupihydroxypropyl methylcellulosendi chizindikiro chofunikira kwambiri. Kukhuthala sikuyimira kuyera. Kukhuthala kwa cellulose HPMC kumadalira njira yopangira. Malo osiyanasiyana ogwiritsira ntchito ayenera kusankha cellulose HPMC yokhala ndi kukhuthala kosiyanasiyana, osati kukhuthala kwa cellulose HPMC, ndibwino! Choyenera ndi chabwino √

Kulamulira Kukhuthala

1. Hydroxypropyl methylcellulose yokhala ndi kukhuthala kwakukulu singapange cellulose yambiri kwambiri pongochotsa utsi ndikuyikamo nayitrogeni. Kawirikawiri, kupanga cellulose yokhala ndi kukhuthala kwakukulu ku China sikungathe kulamulidwa. Komabe, ngati chida choyezera mpweya wochepa chikhoza kuyikidwa mu ketulo, kupanga kukhuthala kumatha kulamulidwa mwa kupanga.

Kugwiritsa ntchito othandizira ogwirizana

2. Kuphatikiza apo, poganizira liwiro losinthira la nayitrogeni, komanso nthawi yomweyo, n'zosavuta kupanga zinthu zokhuthala kwambiri mosasamala kanthu kuti dongosololi ndi lopanda mpweya wotani. Inde, kuchuluka kwa polymerization ya thonje loyengedwa ndikofunikiranso. Ngati sizigwira ntchito, chitani izi mwa hydrophobic association. Pali zinthu zogwirizanitsa zapakhomo pankhaniyi. Mtundu wa associative agent womwe wasankhidwa umakhudza kwambiri magwiridwe antchito a chinthu chomaliza.

Kuchuluka kwa hydroxypropyl

3. Mpweya wotsalira mu reactor umabweretsa kuwonongeka kwa cellulose ndi kuchepa kwa kulemera kwa mamolekyu, koma mpweya wotsalirawo ndi wochepa. Sikovuta kupanga kukhuthala kwakukulu bola mamolekyu oswekawo atalumikizidwanso. Komabe, kuchuluka kwa madzi m'madzi kumagwirizananso 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 zakunja.

zinthu zina

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