Parizvino, mhando yehydroxypropyl methylcellulose yemumba inosiyana zvikuru, uye mutengo unosiyana zvikuru, zvichiita kuti zviomere vatengi kusarudza zvakanaka. HPMC yakagadziriswa yekambani imwe chete yekune dzimwe nyika imhedzisiro yemakore mazhinji ekutsvagisa. Kuwedzerwa kwezvinhu zvidiki kunogona kuvandudza mashandiro ekuvaka uye kuvandudza mashandiro. Ehe, zvichakanganisa mamwe maitiro, asi kazhinji zvinobudirira; Chinangwa chekuwedzera zvimwe zvinoshandiswa ndechekuderedza mitengo, zvichikonzera kudzikira kwakanyanya kwekuchengetedza mvura, kubatana uye zvimwe zvinhu zvechigadzirwa, zvichikonzera matambudziko mazhinji emhando yekuvaka.
Kune misiyano inotevera pakati peHPMC yakachena neHPMC yakasanganiswa:
1. HPMC yakachena inotaridzika zvakanaka uye ine huwandu hushoma, kubva pa0.3-0.4g/ml; HPMC yakasvibiswa inoyerera zviri nani uye inonzwa kurema, izvo zvakasiyana zvachose nechitarisiko chemushonga chaiwo.
2. Mvura yakachena yeHPMC yakajeka, inofambisa chiedza chakawanda, uye mwero wekuchengetedza mvura ≥ 97%; mvura yeHPMC yakasvibiswa ine makore, uye mwero wekuchengetedza mvura wakaoma kusvika 80%.
3. HPMC yakachena haifanirwe kunhuhwidza ammonia, starch nedoro; HPMC yakasanganiswa inogona kunhuhwidza mhando dzese dzemunhuwi, kunyangwe isina kunaka, inonzwika kunge inorema.
4. Upfu hweHPMC hwakachena hune fibrous pasi pemaikorosikopu kana girazi rinokudza; HPMC yakasanganiswa inogona kuonekwa se granular solids kana crystals pasi pemaikorosikopu kana girazi rinokudza.
Kureba kusingakundiki kwe200,000?
Nyanzvi dzakawanda dzemuno nenyanzvi dzakaburitsa mapepa anotenda kuti kugadzirwa kweHPMC kunorambidzwa nekuchengetedzwa kwemidziyo yemuno, nzira yekutsvedza uye kugadzirwa kwemhepo isina simba, uye mabhizinesi akajairika haagone kugadzira zvigadzirwa zvine viscosity inodarika 200,000. Muzhizha, zvinototadza kugadzira zvigadzirwa zvine viscosity inodarika 80,000. Vanotenda kuti izvo zvinonzi zvigadzirwa 200,000 zvinofanira kunge zviri zvigadzirwa zvenhema.
Pfungwa dzenyanzvi hadzina musoro. Zvichienderana nemamiriro ezvinhu ekugadzira zvinhu zvemuno, mhedziso dziri pamusoro apa dzinogona kutorwa zvechokwadi.
Chinhu chikuru chekuwedzera kusimba kweHPMC ndiko kuvharwa kwakanyanya kwereactor uye kumanikidzwa kwakanyanya pamwe chete nezvinhu zvemhando yepamusoro. Kusapinda kwemhepo kwakanyanya kunodzivirira kuparara kwecellulose neokisijeni, uye mamiriro ekuwedzera kwekumanikidzwa kwakanyanya anokurudzira kupinda kwechinhu chinopinza mu cellulose uye zvinoita kuti chigadzirwa chive chakafanana.
Nhamba huru ye200000cps hydroxypropyl methylcellulose:
2% mvura inoyerera viscosity 200000cps
Kuchena kwechigadzirwa ≥98%
Zviri mukati meMethoxy 19-24%
Hunhu hweHydroxypropoxy: 4-12%
200000cps hydroxypropyl methylcellulose zvinhu:
1. Hunhu hwakanaka hwekuchengetedza mvura uye kukora kwayo kuitira kuti mvura inyatsobuda mutsvina.
2. Simba guru rekubatanidza uye simba guru rekupinda kwemhepo, zvinobudirira kudzivirira kupwanyika nekutsemuka.
3. Kunonotsa kuburitswa kwemvura inodziya yesimende pakupisa, kunonotsa nguva yekuiswa, uye kudzora nguva inoshanda yesimbi yesimbi.
4. Kuvandudza kuenderana kwemvura yedhaka rakapombwa, kuvandudza rheology, uye kudzivirira kuparadzaniswa uye kubuda ropa.
5. Zvigadzirwa zvakakosha, zvakanangana nekuvaka munzvimbo inodziya zvakanyanya muzhizha, kuitira kuti mvura inyatsobuda zvakanaka pasina kupatsanurwa.
Nekuda kwekurerutswa kwekutarisa kwemusika, makwikwi muindasitiri yemadhaka ari kuramba achiwedzera. Kuti vagadzirise musika, vamwe vatengesi vakasanganisa zvinhu zvakawanda zvinodhura zvishoma kuti vagadzire cellulose ether yakachipa. Pano, mupepeti anosungirwa kuyeuchidza vatengi kuti vasatevere mitengo yakaderera vasingafungi, kuitira kuti vasanyengerwa. Kunyengerwa, kutungamira mutsaona dzeinjiniya, uye pakupedzisira kurasikirwa kunopfuura purofiti.
Nzira dzakajairika dzekubvisa hunhu hwepabonde uye nzira dzekuona nadzo:
(1) Kuwedzerwa kweamide mu cellulose ether kunogona kukurumidza kuwedzera viscosity ye cellulose ether solution, zvichiita kuti zvisakwanise kuiona ne viscometer.
Nzira yekuziva: Nekuda kwehunhu hwema amide, mhando iyi yemhinduro ye cellulose ether inowanzova ne stringing phenomenon, asi cellulose ether yakanaka haizoonekwe stringing phenomenon mushure mekunyungudika, mhinduro yacho yakaita sejelly, inonzi sticky asi isina kubatana.
(2) Wedzera starch mu cellulose ether. Starch kazhinji hainyungudike mumvura, uye mhinduro yacho inowanzova nechiedza chisina kunaka.
Nzira yekuziva: Donhedza mushonga we cellulose ether ne iodine, kana ruvara rukashanduka kuita bhuruu, zvinogona kunzi starch yawedzerwa.
(3) Wedzera upfu hwepolyvinyl alcohol. Sezvatinoziva tese, mutengo wepamusika wepolyvinyl alcohol powder wakadai se2488 na1788 unowanzova wakaderera pane wecellulose ether, uye kusanganisa upfu hwepolyvinyl alcohol kunogona kuderedza mutengo wecellulose ether.
Nzira yekuziva: Rudzi urwu rwe cellulose ether runowanzova granular uye rwakaoma. Runonyunguduka nekukurumidza nemvura, sarudza mhinduro negirazi rod, pachava nechiitiko chakajeka chekusunga tambo.
Pfupiso: Nekuda kwemaumbirwo ayo akasiyana uye mapoka, kuchengetwa kwemvura kwe cellulose ether hakugone kutsiviwa nezvimwe zvinhu. Hazvina mhosva kuti rudzii rwekuzadza rwunosanganiswa, chero bedzi rwukasanganiswa zvakanyanya, kuchengetwa kwemvura kwacho kuchaderedzwa zvakanyanya. Huwandu hweHPMC ine viscosity yakajairika ye10W mumortar yakajairika i0.15~0.2‰, uye chiyero chekuchengetedza mvura i>88%. Kubuda ropa kwakanyanya. Saka, chiyero chekuchengetedza mvura chiratidzo chakakosha chekuyera mhando yeHPMC, ingave yakanaka kana yakaipa, chero bedzi ichiwedzerwa mumortar, ichave yakajeka nekukurumidza.
Nguva yekutumira: Chivabvu-10-2023