Izimpushana ze-VAE Izimpushana ze-polymer ze-RDP (Redispersible) zivame ukusetshenziswa njengezithasiselo embonini yokwakha. Zengezwa emikhiqizweni esekelwe kusimende njengezinamathiseli zethayela, izinhlanganisela ezizilinganisayo kanye nezinhlelo zokuvikela udonga lwangaphandle ukuze kuthuthukiswe izakhiwo ezifana nokusebenza kahle, ukunamathela kanye nokuguquguquka. Usayizi wezinhlayiya, ubuningi kanye nokuthamba kwama-polymer e-RD kuyimingcele ebalulekile ethinta ukusebenza kwawo kulezi zinhlelo zokusebenza. Lesi sihloko sizogxila endleleni yokuhlola ukuthamba kwe-VAE powder RD polymer powder.
Ukuqina kuchazwa njengendlela yokulinganisa ukumelana koketshezi nokugeleza. Kuma-VAE powders RD polymer powders, ukuqina kuyipharamitha ebalulekile ethinta ukuqina nokusebenza kahle kwezingxube zesamente. Uma ukuqina kuphakeme, kuba nzima kakhulu ukuthi ungqimba luhlanganiswe namanzi, okuholela ezigaxeni kanye nokuhlakazeka okungaphelele. Ngakho-ke, kubaluleke kakhulu ukugcina izinga lokuqina longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba longqimba.
Indlela yokuhlola i-viscosity ye-VAE powder RD polymer powder yenziwa kusetshenziswa i-viscometer ejikelezayo. I-viscometer ejikelezayo ilinganisa i-torque edingekayo ukuze kujikelezwe i-spindle ngaphakathi kwesampula ye-polymer powder elenga emanzini. I-spindle ijikeleza ngesivinini esithile futhi i-torque ilinganiswa nge-centipoise (cP). I-viscosity ye-polymer powder ibe isibalwa ngokusekelwe ku-torque edingekayo ukuze kujikelezwe i-spindle.
Izinyathelo ezilandelayo zichaza inqubo ye-Viscosity Test Method ye-VAE Powder RD Polymer Powder.
1. Ukulungiswa kwesampula: Thatha isampula emele i-RD polymer powder bese uyikala ku-0.1 g eseduze. Dlulisela isampula esitsheni esihlanzekile, esomile nesinotshani. Bhala phansi isisindo sesitsha kanye nesampula.
2. Hlakaza i-polymer powder: Hlakaza i-polymer powder emanzini ngokwemiyalelo yomenzi. Ngokuvamile, i-polymer powder ixutshwa namanzi kusetshenziswa i-mixer enesivinini esikhulu. Hlanganisa i-polymer powder namanzi okungenani imizuzu emi-5 noma kuze kutholakale ingxube efanayo. Ijubane lokuxuba kanye nobude besikhathi kufanele kuhambisane phakathi nokuhlolwa.
3. Ukulinganisa ubungqingili: sebenzisa i-viscometer ejikelezayo ukukala ubungqingili bokumiswa kwempuphu ye-polymer. Usayizi we-spindle kanye nesivinini kufanele kukhethwe ngokuya ngobungqingili obulindelekile bempuphu ye-polymer. Isibonelo, uma kulindeleke ubungqingili obuphansi, sebenzisa usayizi we-spindle omncane kanye ne-RPM ephezulu. Uma kulindeleke ubungqingili obuphezulu, sebenzisa usayizi we-spindle omkhulu kanye nesivinini esiphansi.
4. Ukulinganisa: Ngaphambi kokuthatha izilinganiso, linganisa i-viscometer ngokwemiyalelo yomenzi. Lokhu kuhlanganisa ukubeka iphuzu elingu-zero nokulinganisa ngezixazululo ezijwayelekile ze-viscosity eyaziwayo.
5. Kala i-torque: Faka i-rotor ku-polymer powder suspension ize igcwale ngokuphelele. I-spindle akufanele ithinte phansi kwesitsha. Qala ukuphotha i-spindle bese ulinda ukufundwa kwe-torque ukuthi kuzinze. Qopha ukufundwa kwe-torque nge-centipoise (cP).
6. Ukuphindaphinda: Okungenani kuthathwe izilinganiso ezintathu eziphindaphindwayo zesampula ngayinye futhi kwabalwa isilinganiso se-viscosity.
7. Ukuhlanza: Ngemva kokuthi ukulinganisa sekuqediwe, hlanza i-rotor kanye nesitsha kahle ngamanzi kanye nensipho yokugeza. Hlanza ngamanzi acwengekile bese womisa ngokucophelela.
Ukuqina kwempuphu ye-RD polymer kuthintwa yizici eziningana okuhlanganisa izinga lokushisa, i-pH kanye nokuhlushwa. Ngakho-ke, kubaluleke kakhulu ukukala ukuqina ngaphansi kwezimo ezijwayelekile. Futhi, kufanele kuthathwe izilinganiso ze-viscosity ezivamile ukuqinisekisa ukusebenza okulinganayo kwempuphu ye-RD polymer.
Ngamafuphi, indlela yokuhlola i-viscosity ye-VAE powder RD polymer powder iyisivivinyo esibalulekile sokunquma ukugeleza nokusebenza kahle kwemikhiqizo esekelwe kusimende. Ukuhlolwa kufanele kwenziwe kusetshenziswa imishini nezinqubo ezijwayelekile ukuze kutholakale imiphumela enembile nephindaphindwayo. Izilinganiso ze-viscosity kufanele zithathwe njalo ukuqinisekisa ikhwalithi ye-RD polymer powders.
Isikhathi sokuthunyelwe: Juni-25-2023