Hydroxypropyl methylcellulose inoshandiswa seyakagadziriswa substrate kugadzira oiri, iyo inogona kuona kushandiswa kweshuga yakazara, kuvandudza mwero wekushandiswa kwezvinhu zvakabikwa, kuderedza huwandu hwasara hwe substrate mumuto wekuvirisa, uye kuderedza mutengo wekuchenesa mvura. Iyi hydroxypropyl methylcellulose Hunhu hwekutanga hunoenderana nekugadzirisa kwebatch, fed-batch uye inoenderera mberi yekuvirisa maitiro, kudzivirira nhevedzano yezvinetso sekutonga kwepakati kuumbwa uye dilution rate; iyo inobatsirawo kukugadzirisa kwekuvirisa.
Hydroxypropyl methylcellulose, iyo mbishi zvinhu cellulose, inogona kunatswa donje kana huni pulp. Izvo zvinonyanya kukosha kuipwanya pamberi pe alkalization kana panguva ye alkalization. Kupwanya ndiko kuparadza cellulose mbishi zvinhu ne mechanical simba. Iyo aggregation state chimiro che cellulose macromolecules inogona kuderedza dhigirii recrystallinity uye polymerization, kuwedzera nzvimbo yaro, nekudaro ichivandudza kuwanikwa uye kemikari kuita kugona kweiyo reaction reagent kumapoka matatu ehydroxyl paglucose mhete yeboka re cellulose macromolecule.
Kunyangwe iyo synthesis musimboti we etherification ye hydroxypropyl methylcellulose haina kuoma, nharaunda dzakasiyana dze alkalization, mbishi kupwanya, etherification, solvent recovery, centrifugal kupatsanurwa, kugeza nekuomesa zvinosanganisira nhamba huru yekiyi tekinoroji uye hupfumi hweruzivo. Kune marudzi akasiyana ezvigadzirwa, nharaunda yega yega ine yazvino kudzora mamiriro, senge tembiricha, nguva, kudzvanywa uye kuyerera kwezvinhu. Midziyo yekubatsira uye midziyo yekudzora ivimbiso yakanaka kune yakagadzikana chigadzirwa mhando uye yakavimbika kugadzirwa masisitimu.
Sezvo kushanda kwehydroxypropyl methylcellulose kwakafanana nemamwe ether-soluble ethers, inogona kushandiswa mu latex pendi uye mvura-soluble resin pendi zvikamu semugadziri wefirimu, thickener, emulsifier uye stabilizer.
Ita kuti firimu rekuputira rive nekupfeka kwakanaka kuramba, kuyera uye kunamatira, uye kunatsiridza kushushikana kwepasi, kugadzikana kune asidhi uye alkali, uye kuenderana kune esimbi pigment. Hydroxypropyl methylcellulose ine mhedzisiro yakanaka seyakakora yemvura yakachena-yakavakirwa polyvinyl acetate pendi. Iyo dhigirii yekutsiva cellulose ether inowedzera, uye kuramba kukukurwa kwebhakitiriya kunowedzerwawo.
Nguva yekutumira: Zvita-22-2022