Cellulose ethers rudzi rwepolymer compound inogadzirwa nemakemikari anogadzirisa cellulose. Ane hunhu hwakasiyana hwemuviri nehwemakemikari uye anoshandiswa zvakanyanya mumhando dzakasiyana dzeglues. Nekuda kwehunhu hwakanaka hwecellulose ether, kushandiswa kwayo mumaglues hakungogadzirisi mashandiro ekubatanidza kwechigadzirwa chete, asiwo kunounza shanduko dzakasiyana-siyana dzakadai sekugadzikana, kukora, kuchengetedza mvura, uye kunyorova.
1. Kusimba kwemhedzisiro
Rimwe remabasa makuru e cellulose ethers kukora, izvo zvinoita kuti dzive dzinokosha zvikuru muzvirongwa zvekunamira zvinobva mumvura. Kukora kweglue kwakakosha pakushanda kwayo, uye cellulose ethers dzinogona kuwedzera zvakanyanya kukora kweglue nekugadzira chimiro che network yemolecular. Cellulose ethers dzakadai sehydroxypropyl methylcellulose (HPMC) uye hydroxyethyl cellulose (HEC) dzine mhedzisiro yakanaka yekukora, uye hunhu hwadzo hwekukora hunogona kugadziriswa nekuchinja kwehuremu hwemolecular, mwero wekutsiva nezvimwe zvinhu. Gure rakakora haringorerutsi kukora chete, asiwo rinowedzera simba rekubatanidza, zvichiita kuti rishandiswe zvakanyanya mukugadzira maglue, maglue ezvigadzirwa zvepepa, nezvimwewo.
2. Ita kuti mvura irambe ichichengetwa
Kuchengetwa kwemvura ndeimwe basa rakakosha rema ether e cellulose muma adhesive. Ma ether e cellulose anonyanya kukodzera ma adhesive anobva mumvura, ayo anogona kuchengetedza hunyoro zvinobudirira uye kudzivirira colloid kuti isaome nekukurumidza. Izvi zvinonyanya kukosha munzvimbo umo hunyoro hunokurumidza kupwa. Semuenzaniso, muma adhesive anobva simende kana gypsum muindasitiri yekuvaka, ma ether e cellulose anogona kunwisa mvura, kuwedzera uye kugadzira hydration film, kuwedzera nguva yekushanda kwe adhesive uye kuona kuchengetedzeka panguva yekuvaka. Hunhu hwekubatanidza hahuna kukanganiswa nekuoma nguva isati yakwana. Ichi chinhu chinoshandawo kunzvimbo dzakadai sekupenda madziro uye mataira adhesives anoda kudzora kupwa kwemvura.
3. Kuvandudza hukama uye hunhu hwekunamatira
Kuwedzerwa kwe cellulose ether hakungogone kukora nekuchengetedza mvura chete, asiwo kunovandudza simba rekunamira kweglue. Mapoka anoshanda akadai se hydroxyl ne ether bonds muchimiro chayo che molecular anogona kuumba hydrogen bonds uye zvimwe zvinosangana nemuviri nemakemikari nepamusoro pe adherend, nokudaro zvichiwedzera kunamira kweglue. Izvi zvinoita kuti cellulose ethers ive yakanaka mu bonding paper, huni, ceramics nezvimwe zvinhu. Kuchinja-chinja kwe cellulose ethers kunoita kuti adhesive ive nani uye ive nyore kugadzira, zvichiita kuti ikwanise kushandisa bonding properties dzakanaka pamhando dzakasiyana dze substrates.
4. Kuvandudza kugadzikana uye kuramba kutsvedza
Mumaglue ekuvaka kana mamwe maglue ane viscosity yakakwira, ma ether e cellulose anogonawo kuvandudza kuramba kwekutsvedza kwesystem. Cellulose ether inogona kugadzira network structure mu binder, zvichideredza kuyerera kwe binder, kuitira kuti binder yakaputirwa irambe yakagadzikana uye isatsvedze nekuda kwesimba remagetsi kana zvinhu zvekunze, kunyanya. Zvakakosha zvikuru munzvimbo dzekuvaka dzakadai sekuiswa kwemataira. Pamusoro pezvo, cellulose ether inogonawo kupa adhesive hunhu hwakanaka hwekudzivirira kugadzikana, kudzivirira delamination panguva yekuchengetedza nekushandisa, uye kuve nechokwadi chekuti adhesive yakafanana uye inoshanda kwenguva refu.
5. Kuvandudza mashandiro ekuvaka
Cellulose ether ine mafuta akanaka uye inopararira zvakanaka, izvo zvinoita kuti ishande zvakanaka mumaglues. Maglues anoshandisa cellulose ether haasi nyore chete kuisa, asi anogonawo kugadzira layer inonamira yakatsetseka uye yakafanana pasina kuwedzera ukobvu, kuderedza tambo panguva yekuvaka uye kuvandudza ruzivo rwemushandisi. Panguva imwe chete, kushandiswa kwecellulose ether kunogonawo kuderedza kupwanyika kweglue, kuderedza kutsemuka kana matambudziko ekukwesha mushure mekuputira, uye kuvandudza kugadzikana uye kugara kwenguva refu kwe layer inonamira.
6. Wedzera kuramba kubatwa nechando nekunyunguduka kwemvura
Mune dzimwe nzvimbo dzakakosha dzinoshandiswa, zvinonamatira zvinoda kuchinjirwa kakawanda muchando, zvakaita sekuvakwa kwekunze, kutakurwa nedzimwe nzvimbo. Cellulose ether ine simba rakanaka rekudzivirira kutonhora nekunyunguduka, izvo zvinogona kuchengetedza kugadzikana kwezvinonamatira mumamiriro ekunze akaderera uye kudzivirira kuti zvinonamatira zvisakuvadzwe panguva yekutonhora nekunyunguduka. Kuburikidza nechimiro chayo chakasimba chemolecular, cellulose ether inogona kuchengetedza hunhu hwekubatanidza kwezvinonamatira pasinei nekuchinja kwekushisa, zvichiita kuti ive yakavimbika mumamiriro ekunze akaipisisa. Izvi zvakakosha zvikuru kune masisitimu anonamatira anoda kugara panze kwenguva refu.
7. Kudzivirira nharaunda
Sezvinotorwa kubva mu cellulose yechisikigo, cellulose ethers dzine kugona kuora kwehupenyu uye dziviriro yezvakatipoteredza. Kusiyana nemapolymers ekugadzira, cellulose ethers dzinobva muzvinhu zvinogona kudzokororwa uye hadzizokonzere kusvibiswa kwakanyanya kunharaunda mushure mekushandiswa. Pamusoro pezvo, cellulose ethers dzine kuburitswa kwakaderera kwemakemikari anoshanduka (VOC) panguva yekugadzira nekushandisa, uye zvinoenderana nezvinodiwa nemitemo yemazuva ano yezvakatipoteredza. Nokudaro, mukugadzira maadhesives ane hushamwari nezvakatipoteredza, cellulose ethers zvishoma nezvishoma dzakava thickeners nemaadhesives akakodzera. Binder mbishi zvinhu.
8. Mhando dzakasiyana dzemashandisirwo
Nekuda kwekushanda kwadzo kwakasiyana-siyana, ma cellulose ethers anoita basa guru mukushandiswa kweglue mumaindasitiri akasiyana-siyana. Chekutanga, mukuvaka, ma cellulose ethers anoshandiswa zvakanyanya mumaglue akavakirwa pa simende ne gypsum kuti ape kushanda kwakanaka kwekuvaka uye simba rekubatanidza. Pamusoro pezvo, ma cellulose ethers anoshandiswawo mumaglue ekurongedza uye epepa. Hunhu hwavo hwekuchengetedza mvura uye hwekukora hunobudirira hunovandudza mhedzisiro yekubatanidza uye kugara kwenguva refu kwepepa. Ma cellulose ethers anoshandiswawo mumaglue ekurapa, glue yechikafu nedzimwe nzvimbo. Nekuda kwehunhu hwavo husina chepfu, husina hwema uye hwakagadzikana, anosangana nezvinodiwa zvakasimba zvemaglue muminda iyi.
Sezvinhu zvepolymer zvinoshanda zvakawanda, cellulose ether ine mikana yakakura yekushandiswa mumaglues. Inovandudza zvikuru mashandiro emaglues uye inosangana nezvinodiwa zvemaglues emhando yepamusoro muindasitiri yemazuva ano nemabasa ekuvaka kuburikidza nemabasa akasiyana-siyana akadai sekukora, kuchengetedza mvura, kuvandudza kunamira, kusimbisa kugadzikana, uye kuvandudza kushanda. Nekufambira mberi kuri kuramba kuchiitwa nesainzi netekinoroji uye zvinodiwa nevanhu zvekuchengetedza zvakatipoteredza, basa remaglues ethers mumaglues richawedzera kukosha, uye mikana yekushandisa mune ramangwana ichave yakakura.
Nguva yekutumira: Gunyana-24-2024