Ama-polymer polymer powders (ama-RDPs) adlala indima ebalulekile ezimbonini ezahlukahlukene, kufaka phakathi ukwakhiwa, ukunamathela kanye nezimbobo. Lawa ma-powders asetshenziselwa kabanzi ngokwenza ngcono izakhiwo zezinto zokwakha i-cementional, ukuthuthukisa ukunqwabelana, ukuguquguquka, nokuqina. Ukuqonda inqubo yokukhiqiza ye-RDPS kubalulekile kubakhiqizi ukuqinisekisa imikhiqizo esezingeni eliphakeme.
Ama-Raw material :
Ukukhiqizwa kwama-polymer powders aqandayo aqala ngokukhetha izinto ezisetshenziswayo ngokucophelela ezithonya izakhiwo zomkhiqizo wokugcina. Izakhi eziyinhloko zifaka ama-polymer resins, ama-colloids avikelayo, amapulasitiki, kanye nezithasiselo ezahlukahlukene.
Ama-Polymer Remins: I-Ethylene-Vinyl Acetate (EVA), i-Vinyl Acetate-Ethylene (VAE), futhi ama-acrylic acmermers asetshenziswa kakhulu njengama-polymer resins. Lawa ma-resins ahlinzeka ngokunamathela, ukuguquguquka nokumelana namanzi kuma-RDPs.
Ama-colloids avikelayo: ama-colloids avikelayo afana ne-polyvinyl alcohol (PVA) noma izithambiso ze-cellulose angezwa ukuqinisa izinhlayiya ze-polymer ngesikhathi sokomiswa nokugcina, ukuvimbela ukuhlanganisa.
Amapulasitiki: Amapulasitiki athuthukisa ukuguquguquka nokusebenza kwama-RDPs. Amapulasitiki ajwayelekile afaka izitha ze-glycol ether noma i-polyethylene glycols.
Izengezo: Izithasiselo ezahlukahlukene ezinjengabahlakazekile, izinhlanzi, kanye nama-ejenti axhumanisa ngokuxhumanisa kungafakwa ukukhulisa izakhiwo ezithile njengokuhlakazeka, i-Rhelogy, noma amandla omshini.
Amasu wokucubungula:
Ukukhiqizwa kwama-polymer powders abukeli kuhilela izinyathelo ezimbalwa zokucubungula eziyinkimbinkimbi, kufaka phakathi i-emulsion polymerization, eyomile yokufafaza nezinqubo zangemva kokuphamba.
Emulsion polymerization:
Inqubo iqala nge-emulsion polymerization, lapho ama-monomers, amanzi, ama-emulsifiers, futhi abaqasebenzi baxubene kwi-reactoror ngaphansi kwezimo ezilawulwayo zokushisa kanye nengcindezi. Ama-monomers polymerize ukwakha izinhlayiya ze-latex ezihlakazeke emanzini. Ukukhethwa kwama-monomers nezimo zokuphendula kunquma ukwakheka kwe-polymer kanye nezakhiwo.
Ukuqina kanye nokuhlangana:
Ngemuva kwe-polymerization, i-latex iqhubeka nokuzinza ngokungeza ama-colloids avikelayo nabaqinisi. Lesi sinyathelo sivimbela ukuphoxeka kwezinhlayiya futhi siqinisekise ukuqina kokuhlakazeka kwe-latex. Ama-ejenti we-cooandation angethulwa ukunxenxa ukunxenxa okulawulwayo kwezinhlayiya ze-latex, kwakha i-coagululum ezinzile.
Ukufafaza ukomisa:
Ukuhlakazwa kwe-latex ezinzile bese kudliwa isomisi sokufafaza. EChamber Course Chamber, ukusakazwa kufakwe amaconsi amancane usebenzisa ama-nozzles aphezulu. Umoya oshisayo wethulwa ngasikhathi sinye ukuhwamuka okuqukethwe kwamanzi, kushiye ngemuva kwezinhlayiya eziqinile ze-polymer. Izimo zokomisa, kufaka phakathi izinga lokushisa komoya, isikhathi sokuhlala, kanye nenani le-airflow, lithonya izinhlayiya ze-morphology kanye nezakhiwo zempuphu.
Ukwelashwa ngemuva kwamuva:
Ukulandela ukomisa okufafaza, i-polymer powder ephumela ibhekana nezinqubo zangemva kokulashwa ukuze ithuthukise ukusebenza kwayo nokuqina kwesitoreji. Lezi zinqubo zingafaka ukuguqulwa komhlaba, ukugabha, nokupakishwa.
a. Ukuguqulwa komhlaba: Ama-ejenti angaphezulu komhlaba noma ama-ejenti axhumanisa ama-Cross-acking angasetshenziswa ukuguqula izindawo ezingaphezulu zezinhlayiya ze-polymer, athuthukise ukungafani kwazo kanye nokuhambisana nezinye izinto.
b. I-Granution: Ukwenza ngcono ukuphatha nokuhlakazwa, i-polymer powder ingahle ifake umgomo wokukhiqiza osayizi bezinhlayiyana okufanayo futhi banciphise ukwakheka kothuli.
c. Ukupakishwa: Ama-RDPs okugcina ahlanganiswe ezitsheni ezingavikeleki komswakama ukuvikela ukumunwa komswakama futhi alondoloze ukuqina kwawo ngesikhathi sokugcina nokuhamba.
Izindlela zokulawula ezisezingeni:
Ukulawulwa kwekhwalithi kubalulekile kuyo yonke inqubo yokukhiqiza ukuze kuqinisekiswe ukuvumelana kanye nokwethenjwa ezindaweni zezindawo ezivuselelayo ama-polymer powders. Amapharamitha athile asemqoka abhekwa futhi alawulwa ezigabeni ezahlukahlukene:
Ikhwalithi ebonakalayo eluhlaza: Ukuhlolwa okuphelele nokuhlolwa kwezinto zokusetshenziswa okuluhlaza, kufaka phakathi ama-polymers, ama-colloids, kanye nezithasiselo, kwenziwa ukuqinisekisa ikhwalithi, ukuhlanzeka, ukuhambisana nohlelo oluhlosiwe.
Ukuqapha inqubo: Amapharamitha enqubo abucayi anjengezinga lokushisa lokuphendula, ingcindezi, amanani okuphakelwa kwama-monomer, kanye nemibandela yokomisa kuyaqhubeka ngokuqhubekayo futhi kulungiswe ukuze kugcinwe ikhwalithi yomkhiqizo nokuvumelana.
I-Parphology Comman: Ukusatshalaliswa kosayizi wezinhlayiyana, ukusatshalaliswa kwe-morphology, kanye nezakhiwo ezingaphezulu kwama-polymer powders zihlaziywa kusetshenziswa amasu anjengobuhlakani be-laser, i-lecron microscopy, kanye nokuhlaziywa kwendawo.
Ukuhlolwa kokusebenza: Ama-polymer powders ahlelwe kabusha ukuhlolwa kokusebenza okubanzi ukuze ahlole amandla abo anamathela, ukwakheka kwamafilimu, ukumelana kwamanzi, kanye nezindawo zemishini ngokuya ngezidingo zamakhasimende kanye nezidingo zamakhasimende.
Ukuhlolwa kokuqina: Ukuhlolwa kokuguga okusheshayo kanye nezifundo zokuqina kwenziwa ukuhlola ukuqina kwesikhathi eside kwama-RDPs ngaphansi kwezimo ezahlukahlukene zokugcina, kufaka phakathi ukwehluka okushisa kanye nomswakama.
Ukukhiqizwa kwama-polymer powders abukeli kuhilela uchungechunge oluyinkimbinkimbi lwezinyathelo, kusuka emulsion polymerization ukukala izinqubo zokomiswa nezinsolo zokopha. Ngokulawula ngokucophelela izinto ezingavuthiwe, ukucubungula amapharamitha, kanye nezinyathelo zokulawula ikhwalithi, abakhiqizi bangaqinisekisa ikhwalithi evumelanayo nokusebenza kwama-RDPs ngezicelo zokwakha, ezinamathela. Ukuqonda izinkampani zenqubo yokukhiqiza kubalulekile ekwakheni izici zomkhiqizo nokuhlangabezana nezidingo zokuvela kwamakhasimende emakethe.
Isikhathi sePosi: Mar-12-2024