Muindasitiri yekuvaka, HPMC inowanzoiswa mumvura isina kwayakarerekera, uye chigadzirwa cheHPMC chinonyungudika chega kutonga mwero wekuparara.
Mushure mekuiswa mumvura isina kwayakarerekera yoga, chigadzirwa chinokurumidza kunyura pasina kupararira chigadzirwa chisina kubatwa kwepamusoro; mushure mekuiswa mumvura isina kwayakarerekera chete, chigadzirwa chinogona kupararira uye chisingabatanidzi pamwe chete chigadzirwa chine kurapa kwepamusoro.
Kana iyo isina kurapwa HPMC chigadzirwa chanyungudutswa chega, chidimbu chayo chimwe chinonyungudika nekukurumidza uye chinogadzira firimu nekukasira, izvo zvinoita kuti zvisaite kuti mvura ipinde mune zvimwe zvimedu, zvichikonzera agglomeration uye agglomeration. Inonzi instant product pamusika parizvino. Hunhu hweHPMC isina kurapwa ndeiyi: zvimedu zvega zvinonyungudika nekukasira munzvimbo dzisina kwazvakarerekera, alkaline, uye acidic, asi hazvigone kuparadzira pakati pezvimedu zviri mumvura, zvichikonzera kuungana uye kuungana. Mukushanda chaiko, mushure mekuparadzirwa kwemuviri kweiyi nhevedzano yezvigadzirwa uye zvimedu zvakasimba senge rabha hupfu, simende, jecha, nezvimwewo, chiyero chekunyungudika chinokurumidza, uye hapana agglomeration kana agglomeration. Kana zvichidikanwa kunyungudutsa zvigadzirwa zveHPMC zvakasiyana, iyi nhevedzano yezvigadzirwa inofanira kushandiswa nekuchenjerera, nekuti inounganidza uye inogadzira mapundu. Kana zvichidikanwa kunyungudutsa chigadzirwa cheHPMC chisina kurapwa zvakasiyana, chinoda kuparadzirwa zvakafanana ne 95 ° C mvura inopisa, uye yozotonhodzwa kuti iparare.
Surface-yakagadziriswa HPMC chigadzirwa zvidimbu, mumvura isina kwayakarerekera, zvimedu zvega zvinogona kuparadzirwa pasina agglomeration, asi hazvizongoburitsa viscosity. Mushure mekunyura kweimwe nguva yenguva, chimiro chemakemikari chepamusoro chekurapa chinoparadzwa, uye mvura inogona kunyungudutsa iyo HPMC zvimedu. Panguva ino, zvimedu zvechigadzirwa zvakaparadzirwa zvizere uye zvakanyura mvura yakakwana, saka chigadzirwa hachizoagglomerate kana agglomerate mushure mekuparadzwa. Kumhanya kwekupararira uye kukurumidza kunyungudika kunoenderana nehuwandu hwekurapa kwepamusoro. Kana kurapa kwepamusoro kuri kudiki, kukurumidza kwekuparadzira kunononoka uye kumhanya kwekunamatira kunokurumidza; nepo chigadzirwa chine kudzika kwepamusoro kurapwa kune kukurumidza kupararira kumhanya uye kunonoka kunamatira kumhanya. Kana iwe uchida kuita kuti iyi nhevedzano yezvigadzirwa zvinyunguduke nekukasira mune ino mamiriro, unogona kudonhedza zvishoma zvealkaline zvinhu kana zvanyungudutswa chete. Musika wazvino uno unowanzo kunzi zvigadzirwa zvinononoka kupera. Hunhu hwepamusoro-yakagadziriswa HPMC zvigadzirwa ndeidzi: mune aqueous mhinduro, zvimedu zvinogona kupararira pamwe chete, zvinogona kunyungudika nekukurumidza mualkaline state, uye kunyungudika zvishoma nezvishoma mune kwazvakarerekera uye acidic state.
Mukushanda chaiko kwekugadzira, iyi nhevedzano yezvigadzirwa zvinowanzonyungudika mushure mekuparadzirwa nezvimwe zvimedu zvakaomarara pasi pemamiriro ealkaline, uye mwero wayo wekunyunguduka hauna kusiyana neuyo wezvigadzirwa zvisina kurapwa. Izvo zvakakodzerawo kushandiswa mune zvigadzirwa zvakanyungudutswa chete, pasina caking kana mapundu. Muenzaniso chaiwo wechigadzirwa unogona kusarudzwa maererano nehuwandu hwekuparara hunodiwa nekuvaka.
Munguva yekuvaka, ingave simende dhaka kana gypsum-based slurry, mazhinji acho ari alkaline masisitimu, uye huwandu hweHPMC hwakawedzerwa hudiki kwazvo, hunogona kuparadzirwa zvakaenzana pakati pezvimedu izvi. Kana mvura yawedzerwa, HPMC inokurumidza kunyungudika. Chete chaiyo hydroxypropyl methylcellulose inogona kumira bvunzo yemwaka mina: maitiro ekuita anodzorwa nemazvo kuti abudise HPMC, uye kutsiva kwayo kwakazara uye kufanana kwakanaka kwazvo. Mushonga wayo une aqueous wakajeka uye wakajeka, une mashoma emahara fiber. Iko kuwirirana nerabha poda, simende, lime uye zvimwe zvinhu zvikuru zvakanyanya kusimba, izvo zvinogona kuita kuti zvinhu zvikuru zvitambe zvakanakisisa. Nekudaro, HPMC ine maitiro asina kunaka ine akawanda emahara fiber, kusaenzana kugovera kwezvinotsiva, kutadza kuchengetedza mvura uye zvimwe zvivakwa, zvichikonzera kuwanda kwemvura yekupupuma mukupisa kwemamiriro ekunze. Zvisinei, iyo inonzi HPMC ine zvakawanda zvekuwedzera zvakaoma kurongedza pamwe chete, saka kushanda kwekuchengetedza mvura kwakatonyanya kuipa. Kana hurombo husina kunaka hweHPMC huchishandiswa, matambudziko akadai sekuderera kwesimba simba, kupfupika kuvhura nguva, upfu, kuputika, kuputika uye kudurura kuchakonzerwa, izvo zvinowedzera kuoma kwekuvaka uye kuderedza zvakanyanya kunaka kwechivako. Izvo zvakafanana ndeye cellulose ether, inogona kuva nemhedzisiro yakasiyana zvachose.
Nguva yekutumira: Mar-29-2023