Cellulose ethers ikirasi yakakosha yeakawanda ekuwedzera ekuwedzera, ayo anoshandiswa zvakanyanya mumunda wezvigadzirwa zvekuvaka kuvandudza mashandiro echigadzirwa. Kunyanya mumatairi anonamira, cellulose ethers inogona zvakanyanya kunatsiridza iwo emuviri nemakemikari zvimiro, kuvandudza mashandiro ekuvaka, uye kuwedzera kusimba kwekubatana uye kusimba.
1. Zvinhu zvakakosha zve cellulose ethers
Cellulose ethers inotorwa nemakemikari ekushandurwa kwe cellulose yechisikigo, uye yakajairika inosanganisira methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl cellulose (HEC), etc. Hunhu hwayo hukuru ndehwekuti inonyungudika mumvura, inogadzira mhinduro ye-high-viscosity, uye ine mvura yakanakisa yekukora uye firimu. Aya maitiro anoita kuti cellulose ethers iite basa rakakosha mumatairi anonamira.
2. Kuvandudzwa kwekuchengetedza mvura
2.1 Kukosha kwekuchengetedza mvura
Kuchengetwa kwemvura kwematairi ekunamira kwakakosha pakuita kwekuvaka uye kusimba kwekubatanidza. Kuchengetwa kwemvura kwakanaka kunogona kuve nechokwadi chekuti chinonamira chine hunyoro hwakakodzera panguva yekurapa, nekudaro kuve nechokwadi chakazara simende hydration. Kana kuchengetwa kwemvura kusina kukwana, mvura inobatwa nyore nyore ne substrate kana zvakatipoteredza, zvichiita kuti hydration isina kukwana, iyo inokanganisa simba rekupedzisira uye kusungirirwa kwekugadzirisa.
2.2 Mvura yekuchengetedza nzira ye cellulose ether
Cellulose ether ine yakakwira zvakanyanya kuchengetedza mvura uye inogona kusunga nhamba huru yemamorekuru emvura pacheni yayo yemamorekuru. Yayo yakakwirira viscosity aqueous solution inogona kuumba yunifomu yekugovera mvura mukunamira uye kuvhara mvura kuburikidza necapillary chiito mune adhesive network kudzivirira mvura kuti isarasike nekukurumidza. Iyi nzira yekuchengetedza mvura haingobatsiri kune hydration reaction ye simenti, asi zvakare inogona kuwedzera nguva yakavhurika yekunamatira uye kugadzirisa kuchinjika kwekuvaka.
3. Kuvandudza kushanda kwekuvaka
3.1 Kuwedzerwa kwenguva yakazaruka
Iko kuiswa kwe cellulose ether kunowedzera nguva yakazaruka yekunamatira mataira, ndiko kuti, nguva yenguva iyo yekunamatira inoramba yakanamatira mushure mekushandiswa kune substrate pamusoro. Izvi zvinopa vashandi vekuvaka nguva yakawanda yekugadziridza uye kuisa mataira, nekudaro kuderedza kukanganiswa kwekuvaka kunokonzerwa nekumanikidza kwenguva.
3.2 Kuvandudza anti-sagging kuita
Munguva yekuvaka, chinonamira chinogona kudonha nekuda kwegiravhiti mushure mekunge mataira aiswa, kunyanya kana akaiswa panzvimbo dzakamira. Iko kukora mhedzisiro ye cellulose ether inogona kuvandudza anti-sagging pfuma yeadhesive, kuve nechokwadi kuti haitsvedzeri kana ichinamatira kune mataira. Ichi chivakwa chakanyanya kukosha pakuita chokwadi uye yakazara aesthetics yekuisa mataira.
3.3 Kuvandudza lubricity uye kushanda
Iyo lubricity ye cellulose ether inovandudza kushanda kwematairi anonamira, zvichiita kuti zvive nyore kuisa uye flatten. Ichi chivakwa chinobatsira kuderedza kuoma uye nguva yekuvaka uye kuvandudza kushanda kwekuvaka.
4. Wedzera kusimba kwechisungo
4.1 Kuvandudza kunamatira kwekutanga
Iyo yakakwira viscosity mhinduro yakaumbwa ne cellulose ether mune aqueous solution inogona kuwedzera kusungirirwa kwekutanga kweadhesives ematairi, ichipa iko kunamatira nekukurumidza paunenge uchiisa mataira uye kudzivirira tile kutsvedza kana kutsemuka.
4.2 Kurudzira simende hydration
Iyo yakanaka yekuchengetedza mvura yekuita kwe cellulose ether inovimbisa kuzara kwe hydration reaction ye simenti, nekudaro ichigadzira yakawanda hydration zvigadzirwa (senge hydrated calcium silicate), iyo inowedzera kusungirirwa kwesimba rekunamatira. Iyi nzira haingogadziri simba remagetsi rekunamatira, asi zvakare inovandudza kusimba kwayo uye kusagadzikana kwekuputika.
5. Kuvandudzwa kwekugara uye kusagadzikana kwekuputika
5.1 Yakavandudzwa chando-thaw kuramba
Cellulose ethers inovandudza kutonhora-kunyunguduka kwekupokana kwematairi anonamira nekuvandudza kuchengetedza kwemvura uye compactness yematairi anonamira, kuderedza kukurumidza kutama uye kurasikirwa kwemvura. Kuvandudzwa uku kunobvumira kunamira kuchengetedza kushanda kwakagadzikana kunyangwe munzvimbo dzinotonhora zvakanyanya uye kashoma kutsemuka kana kutyoka.
5.2 Kuvandudzwa kwekusakwanisa kutsemuka
Munguva yekurapa kwekunamatira, iyo dense network yakaumbwa ne cellulose ethers inobatsira kudzikisa kuderera kwe simenti uye kuderedza njodzi yekutsemuka kunokonzerwa nekuderera kwekushushikana. Uye zvakare, iyo thickening mhedzisiro ye cellulose ethers inogonesa iyo inonamira kuti inyatso kuzadza gaka pakati pe tile uye substrate, ichiwedzera kusimbisa kugadzikana kwekubatana kwekubatana.
6. Mamwe mabasa
6.1 Ipa zvekuzora uye anti-sagging zvivakwa
Kuzora kwe cellulose ethers hakungobatsiri kushanda kwekushanda, asi zvakare kunoderedza sagging chiitiko chekunamatira panguva yekushanda kwekushandisa, kuve nechokwadi chekufanana uye kugadzikana panguva yekushandisa.
6.2 Kuvandudzwa kwekuvaka kuve nyore
Nekuwedzera viscosity uye nguva yekuvaka yekunamatira, cellulose ether inovandudza kuve nyore kwekuvaka, ichibvumira vashandi vekuvaka kuti vagadzirise nzvimbo yematiles zviri nyore, kuderedza kukanganiswa kwekuvaka uye kudzoreredza mitengo.
7. Mienzaniso Yekushandisa yeCellulose Ether
Mumashandisirwo chaiwo, cellulose ether inovandudza hutano hwepurojekiti yose nekuvandudza kushanda kwematairi ekunamatira. Semuyenzaniso, mune dzimwe tembiricha dzakakwirira kana nharaunda dzine hunyoro hwakaderera, zvinonamira zvakajairika zvinogona kutarisana nedambudziko rekurasikirwa kwemvura nekukurumidza, zvichikonzera kuoma kwekuvaka uye kusakwana kwesimba. Mushure mekuwedzera cellulose ether, iyo yakanamatira inogona kuchengetedza mvura yakanaka yekuchengetedza, kudzivirira matambudziko aya, uye nokudaro kuve nechokwadi chemhando yeprojekiti.
Cellulose ether inovandudza zvakanyanya kushanda kwematairi anonamira kuburikidza nekuchengetedza kwayo kwakanakisa kwemvura, kukora uye lubricity. Haisi kungovandudza kushanda kwekuvaka, kusungirirwa kwesimba uye kusimba kwekunamatira, asiwo kunovandudza kuve nyore uye kuvimbika kwekuvaka. Kuvandudzwa uku hakungonatsiridza huwandu hwese hweprojekiti, asiwo inopa kuchinjika kukuru uye kugadzikana kwemaitiro ekuvaka. Nokudaro, sechinhu chinokosha chekuwedzera, kushandiswa kwe cellulose ether mumatairi ekunamatira kune zvakakosha zvinoshanda zvakakosha uye tarisiro yakafara.
Nguva yekutumira: Jun-24-2024