Wet-musanganiswa dhaka simende, yakanaka aggregate, musanganiswa, mvura uye akasiyana mativi akatemerwa maererano nekuita. Zvinoenderana nechimwe chikamu, mushure mekuyerwa nekusanganiswa muchiteshi chekusanganisa, chinotakurwa kuenda kunzvimbo inoshandiswa nerori yekusanganisa, uye kuiswa mune yakakosha Musanganiswa wemvura unochengetwa mumudziyo uye unoshandiswa mukati menguva yakatarwa.
Hydroxypropyl methylcellulose inoshandiswa sechinhu chinochengeta mvura uye chinodzoreredza simende dhaka kuita kuti dhaka ripombe. Inoshandiswa sebhainda mukupura plaster, inovandudza kupararira uye inowedzera nguva yekushanda. Iko kuchengetedza kwemvura kuita kwehydroxypropyl methylcellulose HPMC kunodzivirira slurry kubva pakutsemuka nekuda kwekuoma nekukurumidza mushure mekushandisa, uye inowedzera simba mushure mekuoma. Kuchengetwa kwemvura kwakakosha kuita kwehydroxypropyl methylcellulose HPMC, uye zvakare kuita kunocherechedzwa nevazhinji vepamba wet-mix dhaka vanogadzira. Zvinhu zvinokanganisa kuchengetedza kwemvura kwedhaka rakanyorova zvinosanganisira huwandu hweHPMC yakawedzerwa, viscosity yeHPMC, kunaka kwezvimedu, uye tembiricha yenzvimbo yekushandisa.
Basa rakakosha rehydroxypropyl methylcellulose HPMC muvhu-musanganiswa dhaka rinonyanya kuve nemativi matatu, imwe yakanakisa kuchengetedza mvura, imwe isimba pakuenderana uye thixotropy we wet-musanganiswa dhaka, uye chechitatu ndiko kudyidzana nesimende. Kuchengetedzwa kwemvura kweselulosi ether kunoenderana nekutorwa kwemvura kwegadziko layer, kuumbwa kwedhaka, ukobvu hwedhaka redhaka, kudiwa kwemvura kwedhaka, uye nguva yekumisikidzwa kwechinhu chekugadzika. Iyo yakakwirira kujeka kwehydroxypropyl methylcellulose, zviri nani kuchengetedza mvura.
Zvinhu zvinokanganisa kuchengetwa kwemvura yekunyorova-musanganiswa dhaka zvinosanganisira cellulose ether viscosity, kuwedzera huwandu, particle fineness uye tembiricha yekushandisa. Iyo yakakura viscosity ye cellulose ether, zviri nani kuchengetedza mvura kuita. Viscosity yakakosha parameter yeHPMC performance. Pachigadzirwa chimwe chete, mhedzisiro yeviscosity yakayerwa nenzira dzakasiyana zvakasiyana kwazvo, uye mamwe anotopetwa kaviri misiyano. Naizvozvo, kana uchienzanisa viscosity, inofanirwa kuitwa pakati pedzimwe nzira dzekuyedza, kusanganisira tembiricha, rotor, nezvimwe.
Kazhinji kutaura, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura. Nekudaro, iyo yakakwira viscosity uye nekukwirira kwema molecular huremu hweHPMC, kuderera kunoenderana mukunyungudika kwayo kuchava nemhedzisiro yakaipa pakusimba uye kuita kwekuvaka kwedhaka. Iyo yakakwirira viscosity, iyo inonyanya kuoneka iyo thickening maitiro padhaka, asi haina kuenzana zvakananga. Iyo yakakwirira iyo viscosity, iyo yakanyanya viscous dhaka rakanyorova richava, ndiko kuti, panguva yekuvaka, inoratidzirwa sekunamatira kune scraper uye yakakwirira kunamatira kune substrate. Asi hazvibatsiri kuwedzera simba rekuumbwa kwevhu rakanyorova pacharo. Panguva yekuvaka, iyo anti-sag performance haisi pachena. Pane zvinopesana, imwe yakagadziridzwa hydroxypropyl methylcellulose ine yepakati uye yakaderera viscosity ine yakanakisa mashandiro mukuvandudza simba rechimiro chedhaka rakanyorova.
Iyo yakakura huwandu hweselulosi ether HPMC yakawedzerwa mudhaka rakanyorova-yakavhenganiswa, zviri nani kuchengetedza kwemvura kuita, uye iyo yakakwirira viscosity, zviri nani kuchengetedza kwemvura kuita. Fineness zvakare yakakosha kuita index yehydroxypropyl methylcellulose.
Iko kunaka kwehydroxypropyl methylcellulose zvakare kune imwe mhedzisiro pakuchengetedza kwayo mvura. Kazhinji kutaura, yehydroxypropyl methylcellulose ine viscosity yakafanana asi kunaka kwakasiyana, iyo inonakisisa inonakisisa iyo Iyo yekuchengeta mvura mhedzisiro iri nani.
Mudhaka rakanyorova-yakasanganiswa, kuwanda kwekuwedzera kweselulosi ether HPMC yakaderera kwazvo, asi inogona kuvandudza zvakanyanya kugadzirwa kwedhaka rakanyorova rakasanganiswa, uye iro rinonyanya kuwedzera rinokanganisa kuita kwekuvaka kwedhaka. Kusarudzwa kunonzwisisika kweiyo chaiyo hydroxypropyl methylcellulose ine simba guru pakuvandudzwa kwekuita kwedhaka rakanyorova rakasanganiswa.
Nguva yekutumira: Mar-31-2023