Ndi zinthu ziti zomwe zingakhudze kukhuthala kwa hydroxypropyl methylcellulose?

Pogwiritsa ntchito matope onyowa,hydroxypropyl methylcelluloseIli ndi mphamvu zabwino zokhuthala, imatha kuwonjezera kwambiri mphamvu yolumikizirana pakati pa matope onyowa ndi maziko, komanso imathanso kukonza magwiridwe antchito a matope oletsa kutsika, motero imagwiritsidwa ntchito kwambiri popaka pulasitala, makina oteteza makoma akunja ndi matope olumikizirana njerwa.

Kuti ether ya cellulose ikhale yolimba, ingathandizenso kuwonjezera mphamvu ya zinthu zopangidwa ndi simenti yosakanikirana ndi yolimbana ndi kufalikira kwa zinthu, komanso ingathandize kupewa mavuto a delamination, kulekanitsa ndi kutuluka magazi mu matope ndi konkire. Itha kugwiritsidwa ntchito pa konkire yolimbikitsidwa ndi ulusi, konkire ya pansi pa madzi ndi konkire yodzikakamiza yokha.

Hydroxypropyl methylcellulose imatha kuwonjezera magwiridwe antchito okhuthala a zinthu zopangidwa ndi simenti. Kuchita kumeneku kumachokera makamaka ku kukhuthala kwa yankho la ether ya cellulose. Kawirikawiri, nambala ya kukhuthala imagwiritsidwa ntchito kuweruza kukhuthala kwa yankho la ether ya cellulose, pomwe cellulose Kukhuthala kwa ether nthawi zambiri kumatanthauza kuchuluka kwa yankho la ether ya cellulose, nthawi zambiri 2%, pa kutentha komwe kwatchulidwa, monga madigiri 20 ndi liwiro lozungulira, pogwiritsa ntchito chida choyezera chomwe chatchulidwa, monga viscometer yozungulira. Kukhuthala kwa ether.

Kukhuthala ndi chimodzi mwa zinthu zofunika kwambiri poyesa momwe ether ya cellulose imagwirira ntchito. Kukhuthala kwa yankho la hydroxypropyl methylcellulose kukakhala kwakukulu, kukhuthala kwa zinthu zopangidwa ndi simenti kumakhala bwino, komanso kumamatira bwino ku substrate. Nthawi yomweyo, ili ndi mphamvu yoletsa kugwedezeka komanso mphamvu yoletsa kufalikira kwa zinthu zomwe zili ndi simenti zimakhala zolimba, koma ngati kukhuthala kwake kuli kwakukulu kwambiri, zimakhudza momwe zinthu zopangidwa ndi simenti zimagwirira ntchito komanso momwe zimagwirira ntchito.

Ndi zinthu ziti zomwe zingakhudze kukhuthala kwa hydroxypropyl methylcellulose? Makamaka zimadalira zifukwa zotsatirazi.

1. Pamene kuchuluka kwa polymerization ya cellulose ether ya hydroxypropyl methylcellulose kukwera, kulemera kwake kwa mamolekyu kumakulirakulira, zomwe zimapangitsa kuti madzi ake asungunuke kwambiri.

2. Ngati kuchuluka kapena kuchuluka kwa etha ya cellulose kuli kokwera, kukhuthala kwa madzi ake kudzakhala kwakukulu. Komabe, muyenera kusamala posankha kuchuluka koyenera kwa etha ya cellulose mukamagwiritsa ntchito, makamaka kuti mupewe kuchuluka kwambiri kwa etha ya cellulose. Izi zidzakhudza magwiridwe antchito a matope ndi konkire.

3. Monga zakumwa zambiri, kukhuthala kwa yankho la ether ya cellulose kumachepa ndi kukwera kwa kutentha, ndipo kuchuluka kwa ether ya cellulose kukakhala kwakukulu, kutentha kumachepa. Kukhudzidwa kumakhala kwakukulu.

4. Njira yothetsera ether ya cellulose nthawi zambiri imakhala ya pseudoplastic, yomwe imakhala ndi mawonekedwe ochepetsa kudulidwa kwa shear. Kuchuluka kwa kudulidwa kwa shear panthawi yoyesa, kukhuthala kwake kumakhala kochepa.

Kugwirizana kwa matope kudzachepa chifukwa cha mphamvu yakunja, zomwe zimathandizanso pakupanga matope, zomwe zimapangitsa kuti matope azigwira ntchito bwino komanso kuti azitha kugwira ntchito bwino. Komabe, ngatiether ya celluloseYankho limakhala ndi kuchuluka kwakukulu Ngati kukhuthala kuli kochepa ndipo kukhuthala kuli kochepa, limasonyeza makhalidwe a madzi a Newtonian. Pamene kuchuluka kwake kukuwonjezeka, yankholo lidzawonetsa pang'onopang'ono makhalidwe a madzi a pseudoplastic, ndipo ngati kuchuluka kwake kuli kwakukulu, kukhuthala kwake kudzaonekera bwino.