Impushana ye-latex ehlakazeka kabushaiyimpushana yokuthambisa eshintshiwe etholwe ngokumiswa ngokufutha kwe-copolymer kanambambili noma ye-ternary ye-vinylacetase ne-ethylene tert carbonate VoVa noma i-alkene noma i-acrylic acid.Ine-redispersibility enhle, futhi iphinde ihlakazeke ku-lotion lapho ithintana namanzi, futhi izakhiwo zayo zamakhemikhali ziyafana nelotion yokuqala.
Ucwaningo lwempushana ye-latex ehlakazeka kabusha lwaqala ngo-1934 nge-IG Farbenindus AC eJalimane i-polyvinylidene acid redispersible latex powder.
Futhi Japanese powder latex.Ngemva kweMpi Yezwe II, kwaba nokushoda okukhulu kwezinsizakusebenza nezokwakha, okwaphoqa iYurophu, ikakhulukazi iJalimane, ukuba isebenzise izinto zokwakha ezihlukahlukene eziyimpushana ukuze kuthuthukiswe ukusebenza kahle komsebenzi wokwakha.Ngasekupheleni kwawo-1950, i-Hearst Company yaseJalimane kanye ne-Wacker Chemical Company baqala ukukhiqizwa kwezimboni kwempushana ye-latex ehlakazeka kabusha.Ngaleso sikhathi, impushana ye-latex ehlakazeka kabusha yayiwuhlobo lwe-polyvinyl acetate, ikakhulukazi esetshenziselwa izinto zokunamathisela ngokhuni, i-wall primer, nezinto zodonga lukasimende.Kodwa-ke, ngenxa yemikhawulo yezinga lokushisa eliphansi lefilimu le-PVAc elinamathelayo le-PVAc, ukumelana namanzi okungekuhle, nokungazweli kahle kwe-alkali, ukusetshenziswa kwayo kulinganiselwe kakhulu.
Ngokuthuthuka okuyimpumelelo kwezimboni ze-VAE lotion kanye ne-VA/VeoVa lotion,i-emulsion powder ehlakazeka kabushaenezinga lokushisa elincane lefilimu elenza ifilimu elingu-0C, ukumelana kahle kwamanzi nokumelana ne-alkali kwathuthukiswa ngeminyaka yawo-1960.Ngemuva kwalokho, ukusetshenziswa kwayo kwathuthukiswa kakhulu eYurophu, futhi ububanzi bokusebenza kwayo sanda kancane kancane kuya ezintweni ezihlukahlukene zesakhiwo nezingezona zesakhiwo, ukuguqulwa kodaka oluxutshwe okomile, ukufakwa odongeni kanye nezinhlelo zokuqeda, i-screed yodonga kanye nokufaka uphawu. .
Ukukhiqizwa kwasekhaya kwe-latex powder ephindwe kabusha Eminyakeni yamuva nje, isidingo sei-latex powder ehlakazeka kabushaeYurophu naseNyakatho Melika ikhule kancane.Kunalokho, ngokusetshenziswa kancane kancane kwenqubomgomo yaseShayina yokonga amandla okwakha kanye nokukhuthazwa ngamandla kodaka olomile oluxubene lwezakhiwo, ukusetshenziswa kwempushana ye-latex ehlakazeka kabusha e-Chinese Mainland kwenyuke ngokushesha.Izinkampani zakwamanye amazwe kanye namanye amabhizinisi asekhaya nawo asethule amaphrojekthi empushana ye-latex ehlakazeka kabusha ezweni lonke.Ngokwezibalo zochwepheshe ezifanele, ngo-2003, ukukhiqizwa komhlaba wonke kwe-latex powder ephindwe kabusha kwakungamathani ayi-190000, asetshenziswa kakhulu eYurophu naseNyakatho Melika.Ukusetshenziswa emakethe yaseShayina bekungaphansi kwamathani angama-5000.Kodwa-ke, ngo-2007, ukusetshenziswa kwemakethe kwempushana ye-latex ehlakazeka kabusha e-China kwase kufinyelele amathani angu-450000, abahlinzeki abakhulu kungu-Dalian Chemical, Wacker waseJalimane, kanye ne-National Starch yase-United States.Kubikezelwa ukuthi ngo-2010, isidingo se-latex powder ehlakazeka kabusha e-China sizofinyelela amathani angu-100000.
Izinhlobo ze-latex powder ezihlakazeka kabusha:
Izinhlobo eziphambili ze-latex powder esetshenziswa kabusha esetshenziswa emakethe yilezi:
I-Vinyl acetate ne-ethylene copolymer powder (Vac/E), i-ethylene ne-vinyl chloride, ne-montmorillonite ethylene ternary copolymer powder (E/Vc/VL), i-vinyl acetate ne-ethylene kanye ne-fatty acid ephakeme i-ethylene ternary copolymer powder (Vac/E/Vero) , i-vinyl acetate kanye ne-fatty acid ephakeme i-ethylene copolymer powder (Vac/VeoVa), i-acrylic acid ne-ethylene copolymer powder (A/S), i-vinyl acetate ne-acrylic acid, kanye ne-fatty acid ephakeme i-ethylene copolymer powder (Vac/A/VeoVa) I-asidi epholile i-ethylene epholile i-homopolymer rubber powder (PVac), i-styrene butadiene copolymer rubber powder (SBR), njll.
Ukwakheka kwe-latex powder ehlakazeka kabusha:
*Impushana ye-latex ehlakazeka kabusha imvamisa iyimpushana emhlophe, kodwa kukhona neminye imibala embalwa etholakalayo.Izingxenye zayo zihlanganisa: * I-polymer resin: etholakala engxenyeni ephakathi kwezinhlayiya zenjoloba yempushana, futhi iyisici esiyinhloko esingasetshenziswa ukuhlakaza impushana ye-latex.
*Okwengeziwe (kwangaphakathi): Kusetshenziswa kanye ne-resin ukuze kulungiswe inhlaka.
*Izithasiselo (zangaphandle): Ukuze kuthuthukiswe ukusebenza kwempushana ye-latex ehlakazeka kabusha, izinto ezengeziwe zengezwa.
I-protective colloid:
Isendlalelo se-hydrophilic material esongwe phezu kwezinhlayiya ze-latex powder ezihlakazeka kabusha, eziningi zazo ezingahlakazeka kabusha.
I-colloid evikelayo yempushana ye-latex ehlakazekile i-polyvinyl alcohol.
I-Anti Caking Agent: I-fine mineral filler isetshenziselwa ikakhulukazi ukuvimbela ukugoqa kwempushana yerabha ngesikhathi sokugcinwa nokuthuthwa, kanye nokwenza lula ukugeleza kwempushana yerabha (ukulahlwa ezikhwameni zamaphepha noma ezimotweni zamathangi)
Indima yeI-RDP:
*Impushana ye-latex ehlakazeka kabusha yenza ifilimu ngemva kokuhlakazwa futhi isebenza njengesinamatheliso sesibili sokuthuthukisa amandla ayo;
*I-colloid evikelayo imuncwa uhlelo lodaka (ngeke lonakaliswe amanzi ngemva kokwakhiwa kwefilimu, noma "ukuhlakazeka kwesibili":
*I-polymer resin eyenza ifilimu isatshalaliswa njengento eqinisayo kulo lonke uhlelo lodaka, ngaleyo ndlela ikhulise ukuhlangana kodaka:
Ukusebenza komkhiqizo:
Impushana ye-latex ehlakazeka kabusha yenziwa nge-polymer lotion ngokumisa isifutho.Ngemva kokuxuba namanzi odakeni, i-emulsified futhi ihlakazwe emanzini ukuze yakhe i-polymer lotion ezinzile futhi.Ngemuva kokuthi i-latex powder ehlakazeka kabusha i-emulsified futhi ihlakazwe emanzini, amanzi ayahwamuka, enze ifilimu ye-polymer odakeni ukuze kuthuthukiswe ukusebenza kodaka.Impushana ye-latex ehlakazeka kabusha ehlukile inemithelela ehlukene kudaka olomile lwempuphu.Ngokuthuthukisa ukumelana komthelela, ukuqina, nokumelana nokugqoka kodaka, izinhlayiya ze-adhesive powder zigcwalisa ama-pores of the mortar, okwandisa ukubumbana kwawo futhi zithuthukise ukumelana kwayo kokugqoka.Ngaphansi kwesenzo samandla angaphandle, izokhiqiza ukuphumula ngaphandle kokulimala.Amafilimu anamathelayo e-polymer angaba khona unomphela ezinhlelweni zodaka.Ukuthuthukisa ukusebenza kokwakhiwa kodaka.
Kunomphumela wokugcoba phakathi kwezinhlayiya ze-polymer adhesive powder, okuvumela izingxenye zodaka ukuba zigeleze ngokuzimela, kuyilapho i-powder enamathelayo inomphumela obangela umoya, p.i-rovide compressibility of mortar futhi ithuthukise ukusebenza kwayo ngesikhathi sokwakhiwa.Ukuthuthukisa amandla okubopha nokuhlangana kodaka.
Ngemuva kokuqoshwa noi-latex powder ehlakazeka kabushanjengesibophezelo sezinto eziphilayo, singakha amandla aqinile aphezulu kanye namandla okunamathela kuma-substrates ahlukene.Idlala indima ebalulekile ekunamatheleni phakathi kodaka nezinto eziphilayo (i-EPS, ibhodi legwebu elikhishwe) kanye ne-substrate engaphezulu ebushelelezi.I-polymer adhesive powder eyenza ifilimu isakazwa njengento yokuqinisa kulo lonke uhlelo lodaka, okwandisa ukuhlangana kodaka.Ukuthuthukisa ukumelana nesimo sezulu, ukumelana neqhwa, nokuvimbela ukuqhekeka kodaka, i-latex powder ephindwe kabusha ingeye-thermoplastic resin, ekwazi ukuguquguquka okuhle futhi engenza udaka luvumelane nezinguquko zangaphandle ezibandayo nezishisayo, kuvimbele ngempumelelo ukuqhekeka kodaka ngenxa yokuhluka kwezinga lokushisa. .Ngokwenza ngcono i-hydrophobicity yodaka nokunciphisa ukumuncwa kwamanzi, i-latex powder ingaphinde ihlakazwe ukuze yakhe ifilimu embotsheni nangaphezulu kodaka.Ifilimu yokunamathisela ye-polymer ngeke iphinde ihlakazwe ngemva kokuhlangana namanzi, ivimbela ukuhlasela kwamanzi futhi ithuthukise ukungakwazi kwayo ukungena.I-latex powder ekhethekile ehlakazeka kabusha enomphumela we-hydrophobic inomphumela ongcono we-hydrophobic.Ukuthuthukisa amandla okugoba namandla okugoba odaka.
Isicelo somkhiqizo:
Isistimu yokufaka udonga yangaphandle:
I-Bonding mortar: Qinisekisa ukuthi udaka lunamathela ngokuqinile udonga ebhodini le-EPS.Thuthukisa amandla okubopha.
I-Plastering mortar: Qinisekisa amandla emishini, ukumelana nokuqhekeka, ukuqina, kanye nokumelana nomthelela wesistimu yokufaka.
I-Joint filler: Ukungafinyeleli kodakavimbela ukungena kwamanzi.Ngesikhathi esifanayo, inokunamathela okuhle nemiphetho yamathayela e-ceramic, izinga eliphansi lokuncipha, nokuguquguquka.
Ukulungiswa kabusha kwethayela kanye ne-plastering putty yebhodi lokhuni: Thuthukisa ukunamathela namandla okubopha kwe-putty kuma-substrates akhethekile (njengamathayela e-ceramic, ama-mosaics, i-plywood, nezinye izindawo ezibushelelezi), uqinisekise ukuthi i-putty inokuguquguquka okuhle kokucindezela i-coefficient yokwandisa i-substrate.
I-Masonry ne-plastering mortar: Thuthukisa ukugcinwa kwamanzi.Yehlisa ukulahleka kwamanzi kuma-substrates anezimbotshana.
Udaka olungenamanzi olusekelwe kusimende:Qinisekisa ukusebenza okungangeni kwamanzi kwentonga yodaka, kuyilapho futhi unokunamathela okuhle nendawo ephansi, futhi uthuthukise amandla okucindezela nokuguquguquka kodaka.
Udaka lokuzilinganisa phansi:Qinisekisa ukumataniswa kwe-elastic modulus yodaka, kanye nokumelana kwayo nokugoba nokuqhekeka.Thuthukisa ukumelana nokugqokwa, amandla okubopha, nokuhlangana kodaka.
Udaka lwesixhumi esibonakalayo:Thuthukisa amandla angaphezulu kwe-substrate futhi uqinisekise amandla okubopha kodaka.
I-wall putty yangaphakathi nangaphandle:Thuthukisa amandla okubopha we-putty futhi uqinisekise ukuthi inezinga elithile lokuguquguquka ukuze unciphise ukunwetshwa okuhlukile kanye nezingcindezi zokufinyela ezikhiqizwe izendlalelo eziyisisekelo ezihlukene.Qinisekisa ukuthi i-putty inokumelana nokuguga okuhle, ukungagxili, nokumelana nomswakama.
Lungisa udaka:Qinisekisa ukuthi i-coefficient yokwandisa yodaka ifana ne-substrate, futhi unciphise i-elastic modulus yodaka.Qinisekisa ukuthi udaka lune-hydrophobicity eyanele, ukuphefumula, namandla okubopha.
I-adhesive yethayela kanye ne-joint filler:Ukunamathiswa kwethayela: kunikeza amandla aphezulu okubopha udaka, okunikeza ukuguquguquka okwanele ukuze kuncishiswe ama-coefficients ahlukene okunweba okushisayo kwe-substrate namathayili e-ceramic.Thuthukisa ubulula bemisebenzi yokwakha futhi uthuthukise ukusebenza kahle komsebenzi
Isikhathi sokuthumela: Oct-08-2023