Cellulose Ether (CE) chinhu chakagadziriswa chepolymer chinobva mu cellulose yechisikigo uye chinoshandiswa zvakanyanya mukuvaka, machira, mishonga, zvizoro nedzimwe nzvimbo. Kune mhando dzakasiyana dze cellulose ethers, dzakajairika dzinosanganisira hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC) uye methylcellulose (MC). Mukushandiswa kwakasiyana-siyana, cellulose ethers dzakaratidza mabhenefiti makuru maererano nekugara kwenguva refu uye kushanda, zvichiva chinhu chakakosha mukuvandudza mhando yezvinhu uye hupenyu hwebasa.
1. Kuvandudza mashandiro ekuvaka
Mubasa rezvinhu zvekuvaka, maether ecellulose anowanzo shandiswa sezvinhu zvinosimbisa, zvinochengetedza mvura uye zvinosunga. Muzvinhu zvakagadzirwa nemortar, gypsum nesimende, kusimba kwe ether ye cellulose kunoita kuti zvinhu zvive zvakasviba uye zvepurasitiki panguva yekuvaka, zvichidzivirira matambudziko ekubuda ropa uye kupatsanurana. Cellulose ether inovandudzawo simba rekubatanidza zvinhu, zvichiita kuti zvinhu zvikwanise kugoverwa zvakaenzana panguva yekuvaka uye kuti zvive zvakabatana zviri nani ne substrate.
Hydroxypropyl methylcellulose (HPMC) inogona kuvandudza mashandiro emota, zvichiita kuti zvive nyore kuisa uye zvisanyanya kutsvedza, kunyanya mukuvaka kwakamira. Pamusoro pezvo, kunonoka kwe cellulose ether kunogona kuwedzera nguva yekushanda kwemota, izvo zvinobatsira pakuvaka nemazvo mapurojekiti akaomarara. Izvi zvinowedzera kuvandudza kushanda zvakanaka uye kunaka kwekuvaka maererano nekuderedza marara ezvinhu uye zvikanganiso zvekuvaka.
2. Kuchengeta mvura zvakanaka
Chimwe chezvinhu zvakakosha zve cellulose ethers kugona kwavo kuchengetedza mvura. Kuchengetedza mvura zvinoreva kugona kwe cellulose ether kupinza nekuchengetedza hunyoro muchinhu ichi, kudzivirira kubuda kwemvura nguva isati yakwana kana kubuda kwehunyoro, nokudaro zvichiita kuti chinhu chirambe chakasimba uye chigare kwenguva refu mushure mekuvakwa. Muzvinhu zvekuvaka zvakaita sezvigadzirwa zve simende ne gypsum, simba rekuchengetedza mvura re cellulose ether rinoita kuti mvura ikwanise kutora chikamu zvizere mukuita kwe reaction panguva ye hydration reaction, kudzivirira kutsemuka kwezvinhu uye kusakwana kwesimba kunokonzerwa nekurasikirwa nemvura nguva isati yakwana.
Hunhu hwekuchengetedza mvura hwakakosha zvikuru pakuvaka zvidimbu zvitete. Semuenzaniso, panguva yekuiswa mataira, ma cellulose ethers anogona kubatsira kudzivirira hunyoro mudura kuti husarasike nekukurumidza, nokudaro zvichivandudza kunamira uye kugara kwenguva refu kwemataira. Saizvozvowo, mumunda wekuputira, ma cellulose ethers anogona kudzivirira kupwa kwehunyoro nguva isati yakwana, zvichiita kuti dura riite nzvimbo yakafanana uye yakakora, zvichiwedzera hupenyu hwedu uye zvichideredza kudiwa kwekugadzirisa gare gare.
3. Kuvandudza kusimba kwemamiriro ekunze kwezvinhu
Kushandiswa kwe cellulose ethers kunogonawo kuwedzera kugona kwechinhu kugadzikana kwemamiriro ekunze, kureva kuti kuramba kwacho kunokonzerwa nezvinhu zvakaita sehunyoro, mwaranzi yeUV, mamiriro ekunze uye tembiricha yakanyanya. Izvi zvakakosha kuti zvinhu zvekuvaka zvigare kwenguva refu. Semuenzaniso, kushandiswa kwe cellulose ethers mumachira kunogona kuvandudza kunaka kwejira rinogadzira firimu uye kuwedzera huwandu hwejira, nokudaro zvichivandudza kuramba kwejira kumwaranzi ye ultraviolet uye kudzivirira kupera nekukwegura.
Muzvinhu zvakagadzirwa nesimende, cellulose ether inogona kuvandudza kuchengetwa kwemvura, kuderedza kuoma kwekuoma panguva yekuomesa simende, uye kuderedza njodzi yekutsemuka, nokudaro zvichivandudza kuramba kwechando nekunyunguduka uye kuramba kwemamiriro ekunze. Izvi zvinobvumira chivako kuchengetedza kunaka kwechivako chacho uye runako rwacho kwenguva yakareba mumamiriro ekunze akaoma.
4. Kugadzirisa kwakanaka kwazvo kwekukora uye rheology
Kusimba kwe cellulose ether mumushonga wemvura kunoita kuti ikwanise kugadzirisa hunhu hwe rheological hwechinhu chacho (sekusviba, kushushikana kwemubayiro, nezvimwewo), nokudaro zvichivandudza kugadzikana uye nyore kwekushandisa chinhu chacho. Muma coatings nemapendi, cellulose ethers inogadzirisa viscosity yependi kuti ive nechokwadi chekuti haidonhe kana kudonha panguva yekushandiswa uye inogadzira coatings dzakatsetseka, dzakafanana. Izvi hazvingobatsiri chete kudzora kugadzirwa, asiwo zvinowedzera zvakanyanya kuramba kupfeka uye kuramba kutsemuka kwe coatings.
Cellulose ethers inoitawo basa guru mukuzvienzanisa nepasi. Kusimba kwayo uye kugadzirisa rheological kunoita kuti pasi rirambe richiyerera zvakanaka uye richizvienzanisa nepasi panguva yekudurura, zvichideredza kugadzirwa kwemabubbles uye zvikanganiso, uye pakupedzisira zvinovandudza kutsetseka uye kugara kwenguva refu kwepasi.
5. Wedzera kuramba kwezvishandiso
Kuchengetwa kwemvura uye kukora kwe cellulose ether kunobatsira kudzora kumhanya kwekuoma kwechinhu uye kudzivirira kupwanyika uye matambudziko ekutsemuka anokonzerwa nekurasikirwa kwakanyanya kwehunyoro. Kunyanya muzvinhu zvakagadzirwa nemortar nesimende, cellulose ether inogona kuparadzira hunyoro hwakafanana muchinhu uye kuderedza kuitika kwekutsemuka kwekutsemuka. Pamusoro pezvo, hunhu hwayo hwekusunga hunowedzerawo zvinoita kuti chinhu chibatane zviri nani ne substrate uye kuwedzera kusimba kwechimiro chose.
Muzvinhu zvakagadzirwa negypsum, cellulose ethers inodzivirira kuputika kwepamusoro kunokonzerwa nekurasikirwa nemvura nekukurumidza, zvichiita kuti machira emadziro nedenga ave akasimba uye akapfava panguva yekuomeswa. Kusagadzikana uku kwekuputika hakungogadzirisi chete kunaka kwechitarisiko chechigadzirwa, asiwo kunowedzera hupenyu hwacho.
6. Kuvandudza kuramba ngura uye kuramba makemikari
Cellulose ethers inogonawo kuvandudza ngura uye kuramba kwemakemikari kwezvinhu mune mamwe mashandisirwo. Nekuita kuti zvinhu zvive zvakawandisa uye zvisingapindi mvura, cellulose ethers inogona kuderedza kurwiswa kwemakemikari anokuvadza kana hunyoro pachinhu chacho. Izvi zvakakosha zvikuru munzvimbo dzakasiyana siyana, dzakadai sezvirimwa zvemakemikari, nzvimbo dzegungwa kana nzvimbo dzine hunyoro hwakawanda.
Kushandiswa kwe cellulose ethers muzvipfeko zvisingapindi mvura hakungobatsiri chete kuti chipfeko chigare kwenguva refu, asiwo kunowedzera kuramba kwemakemikari akadai semaacids, alkalis, uye munyu, nokudaro zvichiwedzera hupenyu hwebasa rechinhu chacho uye zvichideredza mari yekugadzirisa nekutsiva.
7. Kuchengetedzwa kwezvakatipoteredza zvakasvibira uye budiriro inoenderera mberi
Cellulose ether chinhu chine ruvara rwegirini uye chisingakuvadzi nharaunda nekuti chinobva mu cellulose yezvirimwa zvechisikigo uye chinogona kuora. Kana tichienzanisa nezvinhu zve polymer zvakagadzirwa, cellulose ethers hadzina simba rakawanda panharaunda uye hadziburitse zvinhu zvinokuvadza panguva yekugadzira. Nokudaro, kushandiswa kwakakura kwe cellulose ethers kunosangana nezvinodiwa pari zvino zvekuchengetedzwa kwenharaunda uye budiriro inoenderera mberi muindasitiri yekuvaka.
Zvakanakira zve cellulose ethers panyaya yekugara kwenguva refu uye kushanda zvakanaka zvinoonekwa zvakanyanya mukuchengetedza kwavo mvura, kukora, kunamira uye kuramba mamiriro ekunze. Hazvingogadzirise mashandiro ekuvaka kwezvinhu zvekuvaka chete, asiwo zvinowedzera zvakanyanya kuramba kwechinhu ichi kupwanyika, kugara kwenguva refu uye kuramba ngura, uye zvinowedzera hupenyu hwebasa rechinhu chacho. Pamusoro pezvo, hunhu hwegirini uye hune hushamwari nezvakatipoteredza hwe cellulose ether hunoitawo kuti ive chikamu chakakosha chekugadzirwa kwezvinhu zvekuvaka zvemangwana.
Nguva yekutumira: Gunyana-18-2024