Kodi ndi ziti zomwe zimakhudza kuyera kwa hydroxypropyl methylcelulose?

Kuyera kwa hydroxypropyl mu methylcellulose pakupanga matope okumba ndi putty uw Kukuthandizani kuyankha funsoli lero.

Mu kupanga hydroxypropyll methylcellulose, mpweya wotsalira wa riyakiti womwe umayambitsa matenda a hydroxycyulose ndikuchepetsa mamolekyulu osweka, sizovuta kwambiri. Tsoka. Mlingo wofunikira kwambiri wamadzi umakhala ndi zambiri zokhudzana ndi zomwe zili hydroxypyl. Mafakitale ena amangofuna kuchepetsa mtengo ndi mtengo wake, ndipo sakufuna kuwonjezera ma hydroxypropyl, ndiye kuti mtunduwo sungafike pamlingo wofanana ndi zinthu zakunja.

Kusunga kwamadzi kwa hydroxypypyl methylcellulose kukhalanso ndi ubale wabwino ndi hydroxypropyl, ndipo chifukwa cha zomwe amachita, hydroxypylyulose ya hydroxygyulose. Mphamvu ya kuchepa kwa methyl chloride to propyyne oxide, kuchuluka kwa alkali ndi kuchuluka kwa thonje loyengeka onse kudziwa zomwe zimapangidwazo.

Mtundu wa zopangira, zotsatira za kuperewera, chiwerengero cha chiwerengerocho cha njirayi, chiwerengero cha zosungunulira ndi mphamvu zokhala ndi mikaka, zina ndi zachikasu, ndipo zina ndizomveka ndipo zowonekera. Kuti muthetse, sinthani kuchokera pamwambapa. Nthawi zina acetic acid amatha kukhudza kwambiri. Ndikofunika kugwiritsa ntchito acetic acid pambuyo pa kuchepa. Chovuta chachikulu ndikuti zomwe zimapangitsa kuti zichitike ndi yunifolomu komanso ngati chiwerengero chake chili chokhazikika (zida zina zimakhala ndi chinyezi chosakhazikika, monga zosungunulira zomwe zimagwiritsidwa ntchito kubwezeretsanso). Pali zinthu zambiri zimasewera. Kukhazikika kwa zida ndi kugwiritsidwa ntchito kwa ogwiritsa ntchito bwino kuyenera kupanga zinthu zokhazikika. Kuwala kopepuka sikungapitirire mitundu ya ± 2%, komanso kufanana kwa magwiridwe a magulu olowa m'malo ayenera kuwongolera bwino. M'malo mofanana, kupatsirana kumachitika bwino.

Chifukwa chake, mtundu wabwino wopanga zinthu umatsimikiziridwa ndi zinthu zopangira, matesano opanga, ndi zinthu zina. Pokhapokha kuwongolera mokha kuyambira wina mpaka kumapeto, zinthu zokhala ndi khola zimapangidwa.