Hydroxyethyl Cellulose (HEC) isiri-ionic mvura-inonyungudika yepolymer komboni ine chimiro chemakemikari inogadziriswa kubva ku cellulose kuburikidza nehydroxyethylation reaction. HEC ine mvura yakanaka solubility, thickening, kumisa, emulsifying, kuparadzira uye firimu-kugadzira zvinhu, saka inoshandiswa zvakanyanya mukuvaka zvinhu, machira, makemikari ezuva nezuva uye indasitiri yezvokudya. Mupfapfaidzo-yakavharidzirwa inokurumidza-kugadzika rabha asphalt isingapindi mvura, kuiswa kwehydroxyethyl cellulose kunogona kuvandudza zvakanyanya kupisa kwayo.
1. Zvinhu zvakakosha zve hydroxyethyl cellulose
Hydroxyethylcellulose ine hunyanzvi hwekukora uye bhaisikopo rekugadzira firimu mumvura, zvichiita kuti ive yakanakira gobvu kune akasiyana-siyana emvura-based coatings. Iyo inonyanya kuwedzera viscosity yepende nekugadzira hydrogen zvisungo nemamorekuru emvura, zvichiita kuti network yemamorekuru emvura iwedzere. Ichi chivako chinonyanya kukosha mukuvhara kwemvura, sezvo high viscosity inobatsira iyo coating kuchengetedza chimiro chayo uye ukobvu isati yapora, kuve nechokwadi chekuenderana kwefirimu uye kuenderera.
2. Mechanism yekuvandudza kupisa kupisa
2.1 Wedzera kugadzikana kwemachira
Kuvapo kwehydroxyethyl cellulose kunogona kuvandudza kugadzikana kwekupisa kwerubha asphalt coatings. Iyo viscosity yependi kazhinji inodzikira kana tembiricha yakwira, uye hydroxyethyl cellulose inononotsa kuita uku uye inochengetedza hunhu hwependi. Izvi zvinodaro nekuti boka re hydroxyethyl riri muHEC molecule rinogona kuumba mutumbi wemuchinjika-wakabatana network pamwe nezvimwe zvikamu mukupfeka, izvo zvinowedzera kugadzikana kwekupisa kweiyo firimu yekuputira uye inoita kuti ichengetedze yakanaka chimiro uye kushanda pasi pekushisa kwakanyanya.
2.2 Kuvandudza mashandiro emuchina weiyo firimu yekuputira
Iyo mechanical properties yefirimu yekuputira, yakadai sekushandura, kusimba simba, nezvimwewo, inobata zvakananga kushanda kwayo pasi pemamiriro ekupisa kwepamusoro. Kuunzwa kweHEC kunogona kukwidziridza zvimisikidzo zveiyo firimu yekuputira, iyo inonyanya kukonzerwa nekukora kwayo kunoita kuti iyo yekuputira firimu denser. Iyo dense yekuputira firimu chimiro haingonatsiridze kupisa kupisa, asi zvakare inosimudzira kugona kurwisa kushushikana kwemuviri kunokonzerwa nekunze kwekuwedzera kwemafuta uye kuputika, kudzivirira kuputika kana kupeuka kweiyo firimu rekuvhara.
2.3 Wedzera kunamatira kweiyo firimu yekuputira
Pasi pemamiriro ekupisa kwepamusoro, mabhanhire asina mvura anowanzoita delamination kana peeling, izvo zvinonyanya kukonzerwa nekusakwana kwekunamatira pakati pe substrate uye firimu rekuputira. HEC inogona kuvandudza kusungirirwa kwejasi kune substrate nekuvandudza mashandiro ekuvaka uye firimu-kugadzira zvinhu zvekupfeka. Izvi zvinobatsira kupfekedza kuchengetedza kushamwaridzana kwepedyo ne substrate pakupisa kwakanyanya, kuderedza njodzi yekupenengura kana delamination.
3. Data yekuedza uye maitiro anoshanda
3.1 Kuedza dhizaini
Kuti uone mhedzisiro yehydroxyethyl cellulose pakupisa kwekupokana kweakapfapfaidzwa nekukurumidza-kuseta rabha asphalt isina mvura yekuvharisa, nhevedzano yekuyedza inogona kugadzirwa. Mukuedza, zvakasiyana-siyana zveHEC zvinogona kuwedzerwa kune kuvhara kwemvura, uye ipapo kugadzikana kwekushisa, mechanical properties uye kunamatira kwekuputira kunogona kuongororwa kuburikidza ne thermogravimetric analysis (TGA), dynamic thermomechanical analysis (DMA) uye kuenzanisa kuedza.
3.2 Zviyedzo zvabuda
Migumisiro yekuedza inoratidza kuti mushure mekuwedzera HEC, kupisa-kupisa kwekushisa kwejasi kunowedzera zvakanyanya. Muboka rekutonga risina HEC, firimu rekuputira rakatanga kuora pa150 ° C. Mushure mekuwedzera HEC, tembiricha iyo firimu yekuputira yaigona kumira yakawedzera kusvika pamusoro pe180 ° C. Mukuwedzera, kuiswa kweHEC kwakawedzera simba rekugadzirisa firimu rekuputira neinenge 20%, nepo kuongorora kuongorora kwakaratidza kuti kusungirirwa kwekuputira kune substrate kwakawedzera neanenge 15%.
4. Zvikumbiro zveUinjiniya uye zvidziviriro
4.1 Injiniya application
Mumashandisirwo anoshanda, kushandiswa kwehydroxyethyl cellulose kunogona kuvandudza zvakanyanya mashandiro ekuvaka uye kwekupedzisira kuita kweakapfapfaidzwa nekukurumidza-kuseta rabha asphalt isina mvura yekupfeka. Iyi yakagadziridzwa coating inogona kushandiswa muminda senge kuvaka kusapinda kwemvura, pasi pevhu engineering kudzivirira mvura, uye pombi anticorrosion, uye inonyanya kukodzera kudzivirira mvura zvinodiwa munzvimbo dzekupisa kwepamusoro.
4.2 Chengetedzo
Kunyangwe HEC inogona kuvandudza zvakanyanya mashandiro ejasi, chiyero chayo chinoda kudzorwa zvine musoro. Yakawandisa HEC inogona kuita kuti viscosity yejasi iwedzere, inokanganisa kushanda kwekuvaka. Naizvozvo, mune chaiyo dhizaini dhizaini, iyo dosage yeHEC inofanirwa kuvandudzwa kuburikidza nekuyedza kuti iwane yakanakisa coating kuita uye kuvaka kwekuita.
Hydroxyethyl cellulose inobudirira inonatsiridza kupisa kwekupokana kweakapfapfaidzwa nekukurumidza-kugadzika rabha asphalt isina mvura machira nekuwedzera viscosity yejasi, kusimudzira ma mechanics eiyo bhaisikopo rekuputira, uye nekuvandudza kunamatira kwekupfeka. Dhata yekuedza uye maitiro anoshanda anoratidza kuti HEC ine mhedzisiro yakakosha mukuvandudza kugadzikana kwekupisa uye kuvimbika kwejasi. Kushandisa zvine musoro kweHEC hakugone kungowedzera basa rekuvaka rejasi, asiwo zvakanyanya kuwedzera hupenyu hwebasa rekuvhara kwemvura munzvimbo dzepamusoro-tembiricha, kupa mazano matsva uye nzira dzekuvandudza kwekuvaka zvinhu zvisingapinde mvura.
Nguva yekutumira: Jul-08-2024