Ko yakanaka hydroxypropyl methylcellulose ether HPMC inotaridzika sei?

Mu putty, simende dhaka uye gypsum-based slurry,HPMChydroxypropyl methylcellulose ether inonyanya kuita basa rekuchengetedza mvura uye kukora, uye inogona kunyatso kuvandudza kunamatira uye sag kuramba kweslurry. Zvinhu zvakadai semhepo tembiricha, tembiricha uye kumhanya kwemhepo zvinokanganisa kuvhurika kwemvura mu putty, simende dhaka uye gypsum-based zvigadzirwa. Naizvozvo, mumwaka wakasiyana, kune mimwe misiyano mukuchengetedza mvura mhedzisiro yezvigadzirwa zvine huwandu hwakafanana hweHPMC yakawedzerwa. Mukuvaka chaiko, iyo yekuchengeta mvura mhedzisiro yeslurry inogona kugadziriswa nekuwedzera kana kudzikisa huwandu hweHPMC hwakawedzerwa.

Kuchengetwa kwemvura kwemethyl cellulose ether pasi pemamiriro ekushisa kwakanyanya chiratidzo chakakosha chekusiyanisa kunaka kwemethyl cellulose ether. Yakanakisa HPMC yakatevedzana zvigadzirwa zvinogona kunyatsogadzirisa dambudziko rekuchengetedza mvura pasi pekushisa kwakanyanya. Mumwaka wekushisa kwakanyanya, kunyanya munzvimbo dzinopisa uye dzakaoma uye dzakatetepa-layer kuvakwa padivi rezuva, yemhando yepamusoro HPMC inodiwa kuvandudza kuchengetwa kwemvura kweslurry. Yepamusoro-mhando HPMC inogona kushandura mvura yemahara mudhaka kuita mvura yakasungwa, nekudaro ichinyatso kudzora kubuda kwemvura kunokonzerwa nekupisa kwemamiriro ekunze uye kuwana yakanyanya kuchengetwa kwemvura.

Yepamusoro-mhando methyl cellulose inogona kuparadzirwa zvakaenzana uye zvinobudirira musimende dhaka uye gypsum-based zvigadzirwa, uye kuputira zvese zvakasimba zvimedu, uye kugadzira firimu rekunyorova, uye mvura inoburitswa zvishoma nezvishoma kwenguva yakareba. A hydration reaction inoitika, nekudaro ichivimbisa kusimba kwechisungo uye kusimba kwesimba rezvinhu. Naizvozvo, mukupisa kwekupisa kwezhizha, kuitira kuti uwane mhedzisiro yekuchengetedza mvura, zvinodikanwa kuti uwedzere emhando yepamusoro zvigadzirwa zveHPMC muhuwandu hwakakwana maererano nefomati. Kana musanganiswa weHPMC ukashandiswa, kusakwana kwemvura, kuderera kwesimba, kuputika, uye voids zvichaitika nekuda kwekunyanya kuoma. Zvinetso zvemhando yepamusoro zvakaita semadhiramu nemadhishi zvinowedzerawo kunetsa kwekuvaka kwevashandi. Sezvo tembiricha inodonha, huwandu hweHPMC hwakawedzerwa hunogona kudzikiswa zvishoma nezvishoma, uye iyo yakafanana yekuchengetedza mvura inogona kuwanikwa.

Iyo reaction process inonyatso kudzora kugadzirwa kweHPMC, uye kutsiviwa kwayo kwakakwana uye kufanana kwayo 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 (compound type) ine tsvina yakawanda yakaoma kurongedza pamwe chete, saka kuchengetwa kwemvura nezvimwe zvinhu zvakatonyanya 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.