Cellulose Ether (CE) imhando yakagadziridzwa yepolymer inotorwa kubva kune yakasikwa cellulose uye inoshandiswa zvakanyanya mukuvaka, machira, mushonga, zvizorwa uye mamwe minda. Kune mhando dzakasiyana dze cellulose ethers, dzakajairika dzinosanganisira hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC) uye methylcellulose (MC). Mumashandisirwo akasiyana-siyana, cellulose ethers yakaratidza zvakakosha zvakakosha maererano nekusimba uye kuita, ichiva chinhu chakakosha mukuvandudza zvinhu zvemhando uye hupenyu hwebasa.
1. Kuvandudza kushanda kwekuvaka
Mumunda wezvivakwa zvekuvaka, cellulose ethers inowanzoshandiswa semakobvu, anochengetedza mvura uye anosunga. Mudhaka, gypsum uye simende-yakavakirwa zvinhu, iko kukora kweselulosi ether kunoita kuti zvinhu zviwedzere kuyerera uye epurasitiki panguva yekuvaka, kudzivirira kubuda ropa uye matambudziko ekuparadzanisa. Cellulose ether inovandudzawo kusimba kwekubatanidza kwezvinhu, kuve nechokwadi kuti zvinhu zvinogona kugoverwa zvakaenzana panguva yekushanda kwekuvaka uye kuva nekunamatira zviri nani kune substrate.
Hydroxypropyl methylcellulose (HPMC) inogona kuvandudza zvakanyanya kushanda kwedhaka, zvichiita kuti zvive nyore kuisa uye kusakwanisa kutsvedza pasi, kunyanya mukuvaka kwakamira. Mukuwedzera, iyo inononoka mhedzisiro ye cellulose ether inogona kuwedzera nguva yekushanda kwedhaka, iyo inobatsira pakuvakwa kwakaringana kwemapurojekiti akaomarara. Aya maficha anowedzera kuvandudza kugona kwekuvaka uye kunaka maererano nekudzikisa marara emidziyo uye kukanganisa kwekuvaka.
2. Yakanakisa kuchengetedza mvura
Chimwe chezvinhu zvakakosha zve cellulose ethers ndiyo yavo yakanaka yekuchengetedza mvura. Kuchengetedzwa kwemvura kunoreva kugona kwe cellulose ether kutora uye kuchengetedza hunyoro mune izvo zvinhu, kudzivirira kubuda nguva isati yakwana kana seepage yehunyoro, nekudaro kuve nechokwadi chekusimba uye kusimba kwechinhu mushure mekuvaka. Muzvivakwa zvekuvaka senge simende-yakavakirwa uye gypsum-yakavakirwa zvigadzirwa, iyo mvura-inochengetedza mhedzisiro ye cellulose ether inova nechokwadi chekuti mvura inogona kutora chikamu zvizere mukuita maitiro panguva ye hydration reaction, kudzivirira kuputika kwezvinhu uye kusakwana simba kunokonzerwa nekurasikirwa kwemvura nguva isati yakwana.
Kuchengetedza mvura kunonyanya kukosha pakuvaka-dete-layer kuvaka. Semuenzaniso, panguva yekugadzira matairi, cellulose ethers inogona kubatsira kudzivirira hunyoro mudhaka kubva pakurasikirwa nekukurumidza, nekudaro kuvandudza kunamatira uye kusimba kwematiles. Saizvozvowo, mumunda wekuputira, cellulose ethers inogona kudzivirira kupera kwemvura nguva isati yasvika, ichibvumira kuvhara kuumba yunifomu uye dense pamusoro, kuwedzera hupenyu hwekuputira uye kuderedza kudiwa kwekugadzirisa gare gare.
3. Kuvandudza kupikisa kwemamiriro ekunze kwezvinhu
Kushandiswa kwema cellulose ethers kunogona zvakare kukwidziridza mamiriro ekunze echinhu, kureva kuramba kwayo kune zvakatipoteredza zvakaita semwaranzi, UV mwaranzi, mamiriro ekunze uye tembiricha yakanyanyisa. Izvi zvakakosha pakugara kwenguva refu kwezvinhu zvekuvaka. Semuenzaniso, kushandiswa kwe cellulose ethers mumajasi kunogona kuvandudza firimu-kuumba kunaka kwekuputira uye kuwedzera kuwanda kwekuputira, nekudaro kunatsiridza kuramba kwejasi kune ultraviolet mwaranzi uye kudzivirira kupera uye kuchembera.
Mune simende-yakavakirwa zvinhu, cellulose ether inogona kuvandudza kuchengetwa kwemvura, kuderedza kuomeswa kuderera kwekuita panguva yekuomesa simende, uye kuderedza njodzi yekutsemuka, nekudaro kunatsiridza kutonhora-kunyungudika kuramba uye kusagadzikana kwemamiriro ekunze. Izvi zvinobvumira chivakwa kuti chichengetedze kuvimbika kwayo kwechimiro uye aesthetics kwenguva yakareba mumamiriro ekunze akaoma.
4. Yakanakisa thickening uye rheology kugadzirisa
Iyo thickening mhedzisiro ye cellulose ether mune aqueous mhinduro inobvumira kugadzirisa iyo rheological maitiro ezvinyorwa (senge viscosity, goho kushushikana, nezvimwewo), nekudaro kuvandudza kugadzikana uye nyore kwekushandisa kwezvinhu. Mumapendi nependi, cellulose ethers inogadzirisa viscosity yependi kuti ive nechokwadi chekuti haisi kudonhedza kana kudonha panguva yekushandiswa uye inogadzira yakatsetseka, yakapfava. Izvi hazvisi kungovandudza kudzora kwekuvaka, asiwo zvakanyanya kuwedzera kupfeka kusagadzikana uye kutsemuka kuramba kwejasi.
Cellulose ethers inoitawo basa rakakosha mukuzvimisikidza pasi zvinhu. Kuwedzera kwayo uye rheological gadziriso mabasa anovimbisa kuti zvinhu zvinochengetedza mvura yakanaka uye yekuzvimisa-yega zvivakwa panguva yekudurura, kuderedza chizvarwa chemabhuru nekuremara, uye pakupedzisira kugadzirisa kupfava uye kusimba kwepasi.
5. Kuwedzera kutsemuka kuramba kwezvinhu
Kuchengetwa kwemvura uye kukora mhedzisiro ye cellulose ether kunobatsira kudzora kumhanya kwekuoma kwezvinhu uye kudzivirira kupera uye kutsemuka matambudziko anokonzerwa nekunyanya kurasikirwa nehunyoro. Kunyanya mudhaka uye simenti-based materials, cellulose ether inogona kuparadzanisa unyoro muzvinhu uye kuderedza kuitika kwekuputsika kwekuputika. Uye zvakare, iyo yakagadziridzwa yekubatanidza zvivakwa zvakare inogonesa izvo zvinhu kuti zvive nani chisungo neiyo substrate uye kuwedzera kutsemuka kuramba kwechimiro chese.
Mune gypsum-based materials, cellulose ethers inodzivirira kutsemuka kwepamusoro kunokonzerwa nekurasikirwa kwemvura nokukurumidza, zvichiita kuti madziro uye sirin'i machira arambe akagadzikana uye akatsetseka panguva yekuoma. Uku kupikiswa kwekupwanya hakungonatsiridza kutaridzika kwemhando yezvinhu, asiwo kunowedzera hupenyu hwayo hwesevhisi.
6. Kuvandudza corrosion resistance uye chemical resistance
Cellulose ethers inogona zvakare kuvandudza kukora uye makemikari kuramba emidziyo mune mamwe maapplication. Nekuita kuti zvinhu zviome uye zvisingaite mvura, cellulose ethers inogona kunyatso kudzikisa kurwiswa kwemakemikari anokuvadza kana hunyoro pane izvo. Izvi zvakakosha zvikuru mune dzimwe nzvimbo dzakakosha, dzakadai semiti yemakemikari, nharaunda dzemugungwa kana nzvimbo dzine hunyoro hwepamusoro.
Kushandiswa kwe cellulose ethers mukuvhara kwemvura hakungogadziri kusimba kwekuputira, asiwo kunowedzera kupikisa kumakemikari akadai seasidhi, alkalis, uye munyu, nekudaro kuwedzera hupenyu hwebasa rezvinhu uye kuderedza mutengo wekugadzirisa uye kuchinja.
7. Green kuchengetedza kwezvakatipoteredza uye budiriro inoenderera
Cellulose ether chinhu chakasvibira uye chinoenderana nemamiriro ekunze nekuti chinobva muchero cellulose chirimwa uye chinoodza. Kana ichienzaniswa neyakagadzirwa polymer zvinhu, cellulose ethers ine zvishoma zvinokanganisa nharaunda uye haiburitse zvinhu zvinokuvadza panguva yekugadzira. Naizvozvo, kushandiswa kwakakura kwe cellulose ethers kunosangana nezvinodiwa ikozvino zvekuchengetedzwa kwezvakatipoteredza uye kusimudzira kwakasimba muindasitiri yekuvaka.
Zvakanakira zve cellulose ethers maererano nekusimba uye kushanda zvinonyanya kuratidzwa mukunaka kwavo kwekuchengetedza mvura, kukora, kunamatira uye kuramba kwemamiriro ekunze. Iyo haingonatsiridze chete mashandiro ekuvaka ezvivakwa zvekuvaka, asi zvakare inosimudzira zvakanyanya kutsemuka kwechinhu, kusimba uye kusagadzikana kwekuora, uye inowedzera hupenyu hwebasa rezvinhu. Mukuwedzera, iyo yakasvibirira uye yakasununguka midziyo ye cellulose ether inoitawo kuti ive chikamu chakakosha chekuvandudzwa kwezvivakwa zvekuvaka ramangwana.
Nguva yekutumira: Sep-18-2024