Hydroxypropyl Methyl Cellulose (HPMC) ikemikari yakawanda inoshandiswa zvakanyanya mukuvaka, kunyanya mukugadzira nekushandiswa kweputty powder. Putty poda chinhu chinoshandiswa pakuvaka kurapa kwepamusoro. Basa rayo guru nderokuzadza kusaenzana kwepamusoro pemadziro uye kupa yakatsetseka uye yunifomu base layer, iyo inopa hwaro hwakanaka hwehunotevera hwekupfeka kana kushongedza maitiro.
Basic zvimiro zveHPMC
HPMC is a non-ionic cellulose ether inowanikwa nemakemikari ekugadzirisa cellulose. Iyo ine yakanaka solubility yemvura uye inogona kukurumidza kunyungudutswa mumvura inotonhora kuti iite yakajeka kana translucent colloidal mhinduro. HPMC ine hydroxyl uye methyl mapoka mune yayo molecular chimiro, saka ine yakanaka thickening, kumiswa, kupararira, emulsification, bonding, firimu kuumbwa, uye inodzivirira colloid mabasa. Pamusoro pezvo, ine zvakare yakanakisa kuchengetedza kwemvura uye kugadzikana, uye haibatike nyore nekupisa uye pH shanduko.
Basa reHPMC mune putty
Thickener uye kumisa mumiririri: HPMC inogona kuwedzera viscosity ye putty slurry, zvichiita kuti zvive nyore kuisa uye kuumbwa panguva yekuvaka, uku ichidzivirira sedimentation ye pigment uye mafirita panguva yekuchengetedza uye kuvaka.
Mvura-yekuchengetedza mumiriri: HPMC ine yakanakisa-yekuchengetedza mvura zvivakwa, izvo zvinogona kuderedza kurasikirwa kwemvura panguva yekuvaka, kuwedzera nguva yakavhurika yeputty, uye kuve nechokwadi chekufanana uye kugadzikana kweputty panguva yekuomesa. Izvi zvinogona kunyatso kudzivirira shrinkage kutsemuka mune putty layer uye kugadzirisa kunaka kwekuvaka.
Lubricating effect: HPMC inogona kuvandudza lubricity ye putty, ichiita kuti iite mushe panguva yekuvaka, kuderedza kuoma kwekuvaka, kuderedza kushanda kwevashandisi, nekuvandudza kushanda zvakanaka.
Binder: HPMC inogona kuwedzera simba rekubatanidza pakati peputty ne substrate, zvichiita kuti putty layer iwedzere kunamatira kumadziro uye kudzivirira kuti irege kudonha.
Kuvandudza kushanda kwekuvaka: HPMC inogona kuvandudza kushanda kweputty, zvichiita kuti zvive nyore kupararira uye kutsetseka paunenge uchiisa nekukwesha, kuderedza mavanga ekuvaka, uye kuve nechokwadi kutsetseka uye kunaka kwemadziro.
Maitiro ekushandisa HPMC
Munguva yekugadzirwa kwe putty, HPMC inowanzowedzerwa kune yakaoma musanganiswa nenzira yehupfu. Huwandu hwekuwedzera hunosiyana zvichienderana nerudzi rwe putty uye kuita zvinodiwa. Kazhinji kutaura, huwandu hweHPMC hunodzorwa hunosvika 0.2% ~ 0.5% yehuwandu hwese hweputty. Kuti ive nechokwadi chekuti HPMC inokwanisa kuita basa rayo zvizere, zvinowanzodiwa kuti uwedzere zvishoma nezvishoma panguva yekusanganisa uye kuichengeta yakasanganiswa zvakaenzana.
Zvakanakira uye kuipa kweHPMC mune putty
Zvakanakira:
Kuchengetedza kwakanaka kwezvakatipoteredza: HPMC haina chepfu uye haina kukuvadza, haina simbi inorema uye zvinokuvadza zvinhu, inosangana nezvinodiwa zvekuchengetedza kwezvakatipoteredza, uye ine hushamwari kune vashandi vekuvaka uye nharaunda.
Kuita kwakadzikama: HPMC ine kuchinjika kwakasimba kune shanduko yemamiriro ekunze senge tembiricha uye pH, yakagadzikana kuita, uye haisi nyore kushata.
Wide applicability: HPMC yakakodzera kune akasiyana substrates uye coating masisitimu, uye inogona kusangana nemhando dzakasiyana dzekuvaka.
Zvakaipa:
Mutengo wepamusoro: Uchienzaniswa nezvimwe zvinhu zvechinyakare, HPMC ine mutengo wakakwira, unogona kuwedzera mutengo wekugadzira wezvigadzirwa zve putty.
Inonzwa kumhando yemvura: HPMC ine zvakakwirira zvinodiwa pamhando yemvura, uye misiyano yemhando yemvura inogona kukanganisa kunyungudika kwayo nekushanda kwayo.
Iko kushandiswa kweHPMC mu putty kune zvakakosha zvakanakira. Haisi kungovandudza mashandiro ekuvaka kwe putty, asi zvakare inovandudza muviri uye makemikari zvimiro zve putty. Kunyangwe mutengo wayo wakakwirisa, kuvandudzwa kwemhando uye nyore kuvaka kwaunounza kunoita kuti ishandiswe zvakanyanya mumapurojekiti ekuvaka emhando yepamusoro. Nekuenderera mberi kwekufambira mberi kwehunyanzvi hwekuvaka, tarisiro yekushandiswa kweHPMC mune putty uye zvimwe zvekuvaka ichave yakakura.
Nguva yekutumira: Aug-09-2024