Indima yempushana ye-latex ehlakazeka kabusha odakeni
Njengamanje, njengoba imikhiqizo ehlukahlukene ekhethekile yodaka lwempushana eyomile yamukelwa kancane kancane futhi isetshenziswa kabanzi, abantu embonini banaka impushana ye-latex ehlakazeka kabusha njengenye yezithako eziyinhloko zodaka olukhethekile lwempushana eyomile, ngakho-ke izimfanelo ezihlukahlukene ziye zavela kancane kancane. i-latex powder, i-multi-polymer latex powder, i-resin latex powder, i-latex-based resin powder powder nokunye.
Izakhiwo ze-microscopic nokusebenza kwe-macroscopici-latex powder ehlakazeka kabushaodakeni kuyahlanganiswa, futhi eminye imiphumela yetiyetha iyahlaziywa. Indlela yokwenza ye-latex powder Redispersible latex powder ukulungisa i-polymer emulsion ibe yingxube engasetshenziselwa ukomisa isifutho ngokungeza izithasiselo ezihlukene, bese wengeza i-colloid evikelayo kanye ne-anti-caking ejenti ukwenza ifomu le-polymer ngemva kokumiswa kwesifutho. Impushana egeleza mahhala iphinde ihlakazeke emanzini. Impushana ye-latex ehlakazeka kabusha isakazwa odakeni olomile olugoqiwe ngokulinganayo. Ngemuva kokuthi udaka luxutshwe namanzi, i-polymer powder iphinde ihlakazwe ku-slurry esanda kuxutshwa futhi ifakwe emulsified futhi; ngenxa ye-hydration ye-cement, ukuhwamuka komhlaba kanye nokumuncwa kwesendlalelo sesisekelo, ama-pores ngaphakathi kodaka akhululekile. Ukusetshenziswa okuqhubekayo kwamanzi kanye nemvelo eqinile ye-alkaline enikezwa usimende kwenza izinhlayiya ze-latex zome ukuze zenze ifilimu eqhubekayo engancibiliki emanzini odakeni. Le filimu eqhubekayo yakhiwa ukuhlanganiswa kwezinhlayiya ezihlakazekile ezilodwa ku-emulsion zibe umzimba ofanayo. Ukuba khona kwalawa mafilimu e-latex asatshalaliswa odakeni oluguquliwe lwe-polymer olwenza udaka oluguquliwe lwe-polymer lukwazi ukuthola izici udaka oluqinile lukasimende olungenakuba nazo: ngenxa yendlela yokuzinwebeka yefilimu ye-latex, ingaxhunywa esisekelweni noma esisinqeni Ekuxhumaneni kwe-polymer modified mortar kanye nesisekelo, lo mphumela ungathuthukisa udaka oluqinile njengesisekelo sokusebenza okukhethekile njengesisekelo sokusebenza okukhethekile kwesisekelo. amathayili e-ceramic aphezulu kanye namabhodi e-polystyrene; Lo mphumela ngaphakathi kodaka ungawugcina uphelele, ngamanye amazwi, amandla okubumbana odaka athuthukisiwe, futhi njengoba inani le-latex powder eliphindwe kabusha likhula, amandla esibopho phakathi kodaka kanye nesisekelo sekhonkrithi athuthukiswa kakhulu; Okuphezulu Ukuba khona kwezizinda ze-polymer eziguquguqukayo nezinwebeka kakhulu kwathuthukisa kakhulu ukusebenza kwebhondi kanye nokuguquguquka kodaka, kuyilapho i-modulus enwebekayo yodaka ngokwayo yehla kakhulu, okubonisa ukuthi ukuguquguquka kwayo kwathuthukiswa. Ifilimu ye-latex ebonwe ngaphakathi kodaka odakeni lukasimende oluguquliwe lwe-polymer ngeminyaka ehlukene. Ifilimu eyakhiwe yi-latex isatshalaliswa ezindaweni ezihlukene odakeni, okuhlanganisa i-base-mortar interface, phakathi kwezimbotshana, eduze kodonga lwezimbotshana, phakathi kwemikhiqizo ye-cement hydration, ezungeze izinhlayiya zikasimende, nxazonke, kanye ne-aggregate-mortar interface. Amanye amafilimu e-latex asatshalaliswa odakeni oluguquliwe yimpushana ye-polymer ehlakazeka kabusha enza kube nokwenzeka ukuthola izakhiwo udaka lukasimende oluqinile olungenakuba nazo: ifilimu ye-latex ingavala imifantu enciphayo kusixhumi esibonakalayo se-base-mortar futhi ivumele ukuqhekeka kokuncipha ukuthi kuphole. Thuthukisa ukuvaleleka kodaka. Ukwenziwa ngcono kwamandla ahlangene odaka: Ukuba khona kwezizinda ze-polymer eziguquguquka kakhulu futhi ezinwebeka kakhulu kuthuthukisa ukuguquguquka nokunwebeka kodaka, kunikeze ukubumbana nokuziphatha okuguquguqukayo kuhlaka lwamathambo oluqinile. Uma kusetshenziswa amandla, ukwakheka kwe-microcrack kuyabambezeleka kuze kufinyelelwe ukucindezeleka okuphezulu ngenxa yokuguquguquka okuthuthukisiwe nokunwebeka. Izizinda ze-polymer ezihlanganisiwe ziphinde zivimbele ukuhlangana kwama-microcracks emifantwini engena. Ngakho-ke, i-latex powder e-redispersible yandisa ukucindezeleka kokuhluleka kanye nokwehluleka kokusebenza kwezinto. Ukuguqulwa kwe-polymer odakeni lukasimende kwenza laba ababili bathole imiphumela ehambisanayo, ukuze udaka oluguquliwe lwe-polymer lusetshenziswe ezikhathini eziningi ezikhethekile. Ngaphezu kwalokho, ngenxa yezinzuzo ze-dry-mix mortar ekulawuleni ikhwalithi, ukusebenza kokwakhiwa, ukugcinwa nokuvikelwa kwemvelo, i-latex powder ehlakazekayo inikeza izindlela zobuchwepheshe eziphumelelayo zokukhiqiza imikhiqizo ekhethekile yodaka olomile.
Ngokusekelwe endleleni yokusebenza kwempushana ye-polymer ehlakazeka kabusha odakeni, senze ezinye izivivinyo zokuqhathanisa ukuze siqinisekise ukusebenza kwenye impahla emakethe njengamanje, eyaziwa nangokuthi i-latex powder, odakeni. 1. Izinto ezisetshenziswayo kanye nemiphumela yokuhlolwa 1.1 Usimende wempahla eluhlaza: I-Conch Brand 42.5 Ordinary Portland Cement Sand: River Sand, Silicon Content 86%, Fineness 50-100 Mesh Cellulose Ether: Domestic Viscosity 30000-35000mpas (Brookndle 2 impushana, i-Speed calcium Viscometer, i-Speed calcium Viscometer) carbonate powder, fineness is 325 mesh Latex powder: VAE-based redispersible latex powder, Tg value is -7°C, lapha kubizwa ngokuthi: redispersible latex powder Wood fiber: ZZC500 yenkampani ye-JS I-latex powder etholakala ngezohwebo: impushana ye-latex etholakala nokudayiswa, ebizwa lapha: ifomula etholakalayo ethengiswayo ye-latex powder test standard: Izimo ze-latex powder test standard 97. (23±2)°C, umswakama ohlobene (50±5)%, isivivinyo Isivinini somoya esizungezayo endaweni singaphansi kuka-0.2m/s. Ibhodi le-polystyrene elinwetshiwe elibunjiwe, ukuminyana kwenqwaba kungu-18kg/m3, lisikwe libe ngu-400×400×5mm. 2. Imiphumela yokuhlolwa: 2.1 Amandla aqinile ngaphansi kwesikhathi sokuphulukisa esihlukile: Izibonelo zenziwe ngokwendlela yokuhlola yamandla ebhondi eqinile ku-JG149-2003. Uhlelo lokuphulukisa lapha yilo: ngemva kokwakhiwa kwesampula, yelashwa usuku olulodwa ngaphansi kwezimo ezijwayelekile ze-laboratory, bese ifakwa kuhhavini engu-50-degree. Isonto lokuqala lokuhlola yilo: lifake kuhhavini lama-degree angu-50 kuze kube usuku lwesithupha, likhiphe, unamathele ikhanda lokuhlola lokudonsa , Ngosuku lwe-7, isethi yamandla okukhipha ihlolwe. Ukuhlolwa kweviki lesibili ukuthi: kufake kuhhavini ongama-degree angu-50 kuze kube usuku lwe-13, yikhiphe, unamathisele ikhanda lokuhlola lokukhipha, futhi uhlole isethi yamandla okudonsa ngosuku lwe-14. Isonto lesithathu, isonto lesine. . . njalo njalo.
Kusukela imiphumela, singabona ukuthi amandla thei-latex powder ehlakazeka kabushaodakeni lwanda futhi lugcina njengoba isikhathi sendawo yokushisa ephezulu sikhuphuka, okufana nefilimu ye-latex ukuthi i-latex powder ekhishwa kabusha izokwakhiwa odakeni Ithiyori iyavumelana, isikhathi eside sokugcina, ifilimu ye-latex ye-latex powder izofinyelela ukuminyana okuthile, ngaleyo ndlela iqinisekise ukunamathela kodaka endaweni ekhethekile yebhodi le-EPS. Ngokuphambene nalokho, i-latex powder 97 etholakala kwezohwebo inamandla aphansi njengoba igcinwa endaweni yokushisa ephezulu isikhathi eside. Amandla abhubhisayo e-latex powder ehlakazekayo ebhodini le-EPS ahlala efana, kodwa amandla abhubhisayo e-latex powder 97 etholakala ngokudayiswa ebhodini le-EPS aya ngokubi nakakhulu.
Ngokuvamile, i-latex powder etholakala ngokudayiswa kanye ne-latex powder ehlakazeka kabusha inezindlela ezihlukene zokwenza, futhi i-latex powder ehlakazeka kabusha, eyenza ifilimu ezingxenyeni ezihlukahlukene zodaka, isebenza njenge-gelling material yesibili ukuze kuthuthukiswe izakhiwo ezibonakalayo zodaka. Indlela yokusebenza yokusebenza ayihambisani.
Isikhathi sokuthumela: Apr-25-2024