Indima yempuphu ye-latex ephinde ihlakazeke ku-mortar
Njengamanje, njengoba imikhiqizo ehlukahlukene ekhethekile yodaka lwempuphu eyomile yamukelwa kancane kancane futhi isetshenziswa kabanzi, abantu embonini banaka i-latex powder ephinde ihlakazeke njengenye yezithasiselo eziyinhloko zodaka lwempuphu eyomile ekhethekile, ngakho-ke kuye kwavela izinto ezahlukahlukene kancane kancane: i-latex powder, i-multi-polymer latex powder, i-resin latex powder, i-resin-based water-based latex powder nokunye.
Izakhiwo ezincane kakhulu kanye nokusebenza okukhulu kwe-macroscopici-latex powder ephinde ihlakazekeKuhlanganiswe ku-mortar, futhi eminye imiphumela yethiyori iyahlaziywa. Indlela yokusebenza ye-redispersible latex powder Redispersible latex powder iwukulungisa i-polymer emulsion ibe yingxube engasetshenziswa ukomisa ngokufafaza ngokufaka izithasiselo ezahlukene, bese ufaka i-colloid evikelayo kanye ne-anti-caking agent ukuze kwenziwe ifomu le-polymer ngemva kokomisa ngokufafaza. I-Free-flow powder iphinda ihlakazeke emanzini. I-redispersible latex powder isatshalaliswa ku-mortar eyomile evuselelwe ngokulinganayo. Ngemva kokuba i-mortar ivuselelwe ngamanzi, i-polymer powder iphinda ihlakazeke ku-slurry esanda kuxutshwa bese ixutshwa futhi; ngenxa yokumanzisa kwe-samente, ukuhwamuka komphezulu kanye nokumuncwa kwesendlalelo sesisekelo, ama-pores ngaphakathi ku-mortar akhululekile. Ukusetshenziswa okuqhubekayo kwamanzi kanye nendawo eqinile ye-alkaline enikezwa yi-samente kwenza izinhlayiya ze-latex zome ukuze zakhe ifilimu eqhubekayo engancibiliki emanzini ku-mortar. Le filimu eqhubekayo yakhiwa ukuhlanganiswa kwezinhlayiya ezihlakazekile ezilodwa ku-emulsion zibe umzimba ofanayo. Ukuba khona kwala mafilimu e-latex asatshalaliswa ku-polymer modulator oguquliwe okwenza i-polymer modulator ikwazi ukuthola izici u-simende oqinile ongenakukwazi ukuba nazo: ngenxa yendlela yokuzelula yefilimu ye-latex, inganamathela esisekelweni noma ku-mortar. Ekuxhumekeni kwe-polymer modulator oguquliwe kanye nesisekelo, lo mphumela ungathuthukisa ukusebenza kokubopha kwe-mortar kanye nezisekelo ezahlukene, njengokunamathela kwezisekelo ezikhethekile njengamathayela e-ceramic aphezulu kanye namabhodi e-polystyrene; Lo mphumela ngaphakathi ku-mortar ungawugcina uphelele, ngamanye amazwi, amandla okubambisana kwe-mortar ayathuthuka, futhi njengoba inani le-latex powder ephinde ihlakazeke likhula, amandla okubopha phakathi kwe-mortar kanye nesisekelo sekhonkrithi athuthuka kakhulu; Okuphezulu Ukuba khona kwezizinda ze-polymer eziguquguqukayo nezinobumnene kakhulu kuthuthukise kakhulu ukusebenza kokubopha kanye nokuguquguquka kwe-mortar, kuyilapho i-modulus e-elastic ye-mortar ngokwayo yehla kakhulu, okubonisa ukuthi ukuguquguquka kwayo kuthuthukisiwe. Ifilimu ye-latex ebonwe ngaphakathi ku-mortar ku-polymer modulator cement oguquliwe eminyakeni ehlukene. Ifilimu eyakhiwe yi-latex isatshalaliswa ezindaweni ezahlukene ku-mortar, okuhlanganisa i-base-mortar interface, phakathi kwama-pores, udonga lwe-pore, phakathi kwemikhiqizo yokudonsa i-cement, uzungeze izinhlayiya ze-cement, uzungeze i-aggregate, kanye ne-aggregate-mortar interface. Amanye amafilimu e-latex asatshalaliswa ku-mortar aguqulwe yi-polymer powder ephinde ihlakazeke enza kube nokwenzeka ukuthola izakhiwo u-mortar we-cement oqinile ongenakukwazi ukuba nazo: ifilimu ye-latex ingahlanganisa imifantu yokushwabana ku-base-mortar interface futhi ivumele imifantu yokushwabana ukuthi iphole. Thuthukisa ukuvaleka kwe-mortar. Ukuthuthukiswa kwamandla ahlangene e-mortar: Ukuba khona kwezizinda ze-polymer eziguquguqukayo kakhulu futhi ezinwebeka kakhulu kuthuthukisa ukuguquguquka nokuqina kwe-mortar, kuhlinzeka ngokubumbana kanye nokuziphatha okuguquguqukayo ku-skeleton eqinile. Lapho kusetshenziswa amandla, ukwakheka kwe-microcrack kuyabambezeleka kuze kube yilapho kufinyelelwa ukucindezeleka okuphezulu ngenxa yokuguquguquka nokuqina okuthuthukisiwe. Izizinda ze-polymer ezihlanganisiwe nazo zivimbela ukuhlangana kwama-microcracks emifantwini engena. Ngakho-ke, i-latex powder ephinde ihlakazeke yandisa ukucindezeleka kokwehluleka kanye nobunzima bokwehluleka kwezinto. Ukuguqulwa kwe-polymer ibe yi-samente mortar kwenza lokhu kokubili kuthole imiphumela ehambisanayo, ukuze i-polymer modified mortar ingasetshenziswa ngezikhathi eziningi ezikhethekile. Ngaphezu kwalokho, ngenxa yezinzuzo ze-dry-mix mortar ekulawuleni ikhwalithi, ukusebenza kokwakha, ukugcina kanye nokuvikela imvelo, i-latex powder ephinde ihlakazeke inikeza izindlela zobuchwepheshe ezisebenzayo zokukhiqiza imikhiqizo ekhethekile ye-dry mortar.
Ngokusekelwe endleleni yokusebenza kwempuphu ye-polymer ephinde ihlakazeke ngayo ku-mortar, senze izivivinyo zokuqhathanisa ukuqinisekisa ukusebenza kwenye into ekhona emakethe njengamanje, eyaziwa nangokuthi i-latex powder, ku-mortar. 1. Izinto zokusetshenziswa kanye nemiphumela yokuhlolwa 1.1 I-samente yezinto zokusetshenziswa: I-Conch Brand 42.5 Isihlabathi Esijwayelekile Se-Portland Cement: Isihlabathi Somfula, Okuqukethwe kwe-Silicon 86%, Ubunono 50-100 I-Mesh Cellulose Ether: Ukuqina Kwasekhaya 30000-35000mpas (Brookfield Viscometer, Spindle 6, Isivinini 20) Impuphu ye-calcium esindayo: impuphu ye-calcium carbonate esindayo, ubunono bungu-325 mesh Impuphu ye-latex: impuphu ye-latex ephinde ihlakazeke esekelwe ku-VAE, inani le-Tg lingu--7°C, lapha libizwa ngokuthi: impuphu ye-latex ephinde ihlakazeke I-fiber yokhuni: ZZC500 yenkampani ye-JS Impuphu ye-latex etholakala kwezentengiselwano: impuphu ye-latex etholakala kwezentengiselwano, ebizwa lapha: impuphu ye-latex etholakale kwezentengiselwano 97. Ifomula yokuhlola yemishini ithi: Izimo zokuhlola ezijwayelekile zelabhorethri: izinga lokushisa (23±2)°C, umswakama ohlobene (50±5)%, ukuhlolwa Isivinini somoya esijikelezayo endaweni singaphansi kuka-0.2m/s. Ibhodi le-polystyrene elandisiwe elibunjiwe, ubukhulu bayo buyi-18kg/m3, lisikwe libe yi-400×400×5mm. 2． Imiphumela yokuhlolwa: 2.1 Amandla okudonsa ngaphansi kwesikhathi sokupholisa esihlukile: Amasampula enziwe ngokwendlela yokuhlola amandla okubopha okudonswa kodaka ku-JG149-2003. Uhlelo lokupholisa lapha yilolu: ngemva kokuba isampula selakhiwe, ilashwa usuku olulodwa ngaphansi kwezimo ezijwayelekile zelebhu, bese ifakwa kuhhavini wama-degree angu-50. Isonto lokuqala lokuhlola yileli: lifake kuhhavini wama-degree angu-50 kuze kube usuku lwesithupha, likhiphe, linamathelise ikhanda lokuhlola elikhishwayo, Ngosuku lwesi-7, kwahlolwa isethi yamandla okudonsa. Ukuhlolwa ngesonto lesibili yileli: lifake kuhhavini wama-degree angu-50 kuze kube usuku lwe-13, likhiphe, linamathelise ikhanda lokuhlola elikhishwayo, bese linamathelise isethi yamandla okudonsa ngosuku lwe-14. Isonto lesithathu, isonto lesine. . . njalo njalo.
Kusukela emiphumeleni, singabona ukuthi amandla e-i-latex powder ephinde ihlakazekeKu-mortar kuyanda futhi kugcinwa njengoba isikhathi endaweni yokushisa okuphezulu sikhula, okufana nefilimu ye-latex ezokwakhiwa yi-powder ye-latex ephinde ihlakazeke ku-mortar. Ithiyori iyavumelana, uma isikhathi sokugcina siside, ifilimu ye-latex ye-powder ye-latex izofinyelela ubuningi obuthile, ngaleyo ndlela iqinisekise ukunamathela kwe-mortar endaweni ekhethekile yebhodi le-EPS. Ngokuphambene nalokho, i-latex powder 97 etholakala kwezentengiselwano inamandla aphansi njengoba igcinwa endaweni yokushisa okuphezulu isikhathi eside. Amandla okubhubhisa e-latex powder ehlakazekayo ebhodini le-EPS ahlala efana, kodwa amandla okubhubhisa e-latex powder 97 etholakala kwezentengiselwano ebhodini le-EPS aya ngokuya eba mandundu.
Ngokuvamile, i-latex powder etholakala kwezentengiselwano kanye ne-latex powder ephinde ihlakazeke inezindlela ezahlukene zokusebenza, kanti i-latex powder ephinde ihlakazeke, eyakha ifilimu ezingxenyeni ezahlukene ze-mortar, isebenza njengento yesibili yokugaya ukuze kuthuthukiswe izakhiwo zomzimba ze-mortar. Indlela yokusebenza yokusebenza ayihambisani.
Isikhathi sokuthunyelwe: Ephreli-25-2024