Hydroxypropyl methylcellulose (HPMC) ndi nonionic cellulose ether yomwe imagwiritsidwa ntchito kwambiri m'mafakitale ndi mankhwala osiyanasiyana. Ntchito zake zazikulu ndi monga thickener, filimu kale, stabilizer, emulsifier, suspending wothandizira ndi zomatira. HPMC chimagwiritsidwa ntchito mu mankhwala, zodzoladzola, chakudya, zomangira ndi mafakitale ena. Kugwiritsiridwa ntchito kwake kumatengera gawo lomwe likugwiritsidwira ntchito, momwe zimagwirira ntchito, zosakaniza zina zomwe zimapangidwira komanso zofunikira zowongolera.
1. Munda wamankhwala
Pokonzekera mankhwala, HPMC nthawi zambiri imagwiritsidwa ntchito ngati chothandizira kumasulidwa, zinthu zokutira, filimu yakale ndi kapisozi. M'mapiritsi, kugwiritsa ntchito HPMC nthawi zambiri kumakhala pakati pa 2% ndi 5% ya kulemera kwake konse kuti athe kuwongolera kuchuluka kwa mankhwalawa. Pamapiritsi otulutsidwa mosalekeza, kugwiritsidwa ntchito kumatha kukhala kwakukulu, mpaka 20% kapena kupitilira apo, kuwonetsetsa kuti mankhwalawa amatha kutulutsidwa pang'onopang'ono pakapita nthawi yayitali. Monga zokutira, kugwiritsidwa ntchito kwa HPMC nthawi zambiri kumakhala pakati pa 3% ndi 8%, kutengera makulidwe ofunikira ndi zofunikira zogwirira ntchito.
2. Makampani a Chakudya
M'makampani azakudya, HPMC imagwiritsidwa ntchito ngati thickener, emulsifier, suspending agent, etc. Imagwiritsidwa ntchito ngati cholowa m'malo mwamafuta muzakudya zochepa zama calorie chifukwa imatha kupereka kukoma kwamafuta ndi kapangidwe kake. Ndalama zomwe zimagwiritsidwa ntchito pazakudya nthawi zambiri zimakhala pakati pa 0.5% ndi 3%, kutengera mtundu ndi kapangidwe kake. Mwachitsanzo, muzakumwa, sosi kapena mkaka, kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito nthawi zambiri kumakhala kochepa, pafupifupi 0.1% mpaka 1%. Muzakudya zina zomwe zimafunikira kukulitsa kukhuthala kapena kusintha mawonekedwe, monga Zakudyazi kapena zinthu zophikidwa, kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito kumatha kukhala kokwera, nthawi zambiri pakati pa 1% ndi 3%.
3. Cosmetic Field
Mu zodzoladzola, HPMC chimagwiritsidwa ntchito monga thickener, stabilizer ndi filimu kale mafuta odzola, zonona, shampu, diso mithunzi ndi mankhwala ena. Mlingo wake nthawi zambiri umakhala 0.1% mpaka 2%, kutengera kukhuthala kwa chinthucho komanso mawonekedwe azinthu zina. Mu zodzoladzola zina zapadera, monga mankhwala osamalira khungu kapena zoteteza dzuwa zomwe zimafunika kupanga filimu, kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito kungakhale kokwera kwambiri kuti atsimikizire kuti mankhwalawa amapanga yunifolomu yotetezera pakhungu.
4. Zida zomangira
Pazomangira, HPMC imagwiritsidwa ntchito kwambiri pazinthu monga simenti, zinthu za gypsum, utoto wa latex ndi zomatira matailosi kuti apititse patsogolo ntchito yomanga, kukulitsa nthawi yotseguka, komanso kukonza zinthu zotsutsana ndi kugwetsa ndi kusweka. Kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito pazomangira nthawi zambiri kumakhala pakati pa 0.1% ndi 1%, kutengera zomwe zimafunikira pakupanga. Kwa matope a simenti kapena gypsum, kuchuluka kwa HPMC nthawi zambiri kumakhala 0.2% mpaka 0.5% kuwonetsetsa kuti zinthuzo zili ndi ntchito yabwino yomanga komanso rheology. Mu utoto wa latex, kuchuluka kwa HPMC nthawi zambiri kumakhala 0.3% mpaka 1%.
5. Malamulo ndi miyezo
Mayiko ndi madera osiyanasiyana ali ndi malamulo ndi mfundo zosiyana zogwiritsira ntchito HPMC. Pankhani yazakudya ndi mankhwala, kugwiritsa ntchito HPMC kuyenera kutsatira zomwe zaperekedwa ndi malamulo oyenera. Mwachitsanzo, ku EU ndi United States, HPMC imadziwika kuti ndi yotetezeka (GRAS), koma kugwiritsidwa ntchito kwake kumafunikabe kuyendetsedwa molingana ndi magulu azinthu ndi ntchito. Pazomangamanga ndi zodzoladzola, ngakhale kugwiritsidwa ntchito kwa HPMC sikungagwirizane ndi zoletsa zachindunji, zomwe zingakhudze chilengedwe, chitetezo chazinthu komanso thanzi la ogula ziyenera kuganiziridwabe.
Palibe muyezo wokhazikika wa kuchuluka kwa HPMC yogwiritsidwa ntchito. Zimadalira kwambiri mawonekedwe ogwiritsira ntchito, zofunikira zogwirira ntchito, ndi kugwirizana kwa zosakaniza zina. Nthawi zambiri, kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito kumayambira 0.1% mpaka 20%, ndipo mtengo wake uyenera kusinthidwa molingana ndi kapangidwe kake ndi zofunikira zowongolera. M'mapulogalamu enieni, ogwira ntchito ku R&D nthawi zambiri amakonza zosintha potengera zoyeserera komanso zomwe akumana nazo kuti akwaniritse ntchito yabwino komanso yotsika mtengo. Nthawi yomweyo, kugwiritsa ntchito HPMC kuyenera kutsata miyezo ndi malamulo amakampani kuti atsimikizire chitetezo ndi kutsata kwazinthu.
Nthawi yotumiza: Aug-19-2024