Ifu ya redxersible latexni ifu yamavuta yo kwisiga yabonetse mukumisha kuma ya binary cyangwa ternary copolymer ya vinylacetase na Ethylene tert karubone VoVa cyangwa alkene cyangwa acide acrylic.Ifite impinduka nziza, kandi irashobora gusubirwamo mumavuta yo kwisiga iyo ihuye namazi, kandi imiterere yimiti irasa na lisansi yumwimerere.
Ubushakashatsi ku ifu ya redxersible latex bwatangiye mu 1934 hamwe na IG Farbenindus AC muri aside polyvinylidene yo mu Budage isubirwamo ifu ya latex.
Ifu yUbuyapani latex.Nyuma y'Intambara ya Kabiri y'Isi Yose, habuze ikibazo gikomeye cy'imirimo n'ubwubatsi, bituma Uburayi, cyane cyane Ubudage, bukoresha ibikoresho bitandukanye byo kubaka ifu kugira ngo ubwubatsi bukorwe neza.Mu mpera za 1950, Isosiyete ya Hearst yo mu Budage na Wacker Chemical Company batangiye gukora inganda zikora ifu ya latxersible.Muri kiriya gihe, ifu ya redxersible latex yari iy'ubwoko bwa acetate ya polyvinyl, ahanini yakoreshwaga mu gukora ibiti, ibiti byo ku rukuta, n'ibikoresho byo ku rukuta rwa sima.Ariko, kubera imbogamizi za PVAc ifata ifu ya firime ntoya cyane yerekana ubushyuhe, kutarwanya amazi, hamwe no kurwanya alkali nabi, imikoreshereze yayo ni mike cyane.
Hamwe ninganda zitsindisha amavuta ya VAE hamwe na VA / VeoVa amavuta,ifu ya emulsion ifuhamwe na firime byibuze ikora ubushyuhe bwa 0C, kurwanya amazi meza no kurwanya alkali byakozwe mu myaka ya za 1960.Nyuma yibyo, ikoreshwa ryarwo ryamamaye cyane muburayi, kandi uburyo bwakoreshwaga bwagiye bwiyongera buhoro buhoro bugera ku bikoresho bitandukanye byubatswe byubatswe kandi bidafite imiterere, guhindura imashini ivanze na minisiteri yumye, guhinduranya urukuta no kurangiza, urukuta rwometseho no gufunga plaque Umwanya wo gutwika ifu no kubaka inyubako. .
Umusaruro wimbere wifu ya redxersible powderx Mu myaka yashize, ibisabwa kuriifu ya redxersiblemu Burayi no muri Amerika y'Amajyaruguru byakuze buhoro.Ibinyuranye na byo, hamwe n’ishyirwa mu bikorwa rya politiki yo kubungabunga ingufu z’Ubushinwa no guteza imbere ingufu za minisiteri ivanze y’inyubako, ikoreshwa ry’ifu ya latx idasubirwaho mu gihugu cy’Ubushinwa ryiyongereye vuba.Amasosiyete mpuzamahanga y’amahanga ndetse n’ibigo bimwe na bimwe byo mu gihugu nabyo byatangije imishinga y’ifu ya redxersible powderx mu gihugu hose.Dukurikije imibare y’impuguke zibishinzwe, mu 2003, ku isi hose umusaruro w’ifu ya redxersible powder yari toni 190000, ukoreshwa cyane cyane mu Burayi no muri Amerika ya Ruguru.Ibikoreshwa ku isoko ryUbushinwa ntibyari munsi ya toni 5000.Nyamara, mu 2007, isoko ryo gukoresha ifu ya latx idasubirwaho mu Bushinwa yari imaze kugera kuri toni 450000, abatanga isoko rikuru ni Dalian Chemical, Wacker ukomoka mu Budage, na National Starch yo muri Amerika.Biteganijwe ko mu mwaka wa 2010, icyifuzo cy’ifu ya latx idasubirwaho mu Bushinwa kizagera kuri toni 100000.
Ubwoko bwa redispersible latex powder:
Ubwoko bwingenzi bwa redispersible latex ifu ikoreshwa kumasoko ni:
Ifu ya Vinyl acetate na Ethylene copolymer ifu (Vac / E), Ethylene na vinyl chloride, na montmorillonite Ethylene ternary copolymer ifu (E / Vc / VL), vinyl acetate na Ethylene hamwe nifu ya aside irike etylene ternary copolymer ifu (Vac / E / VeoVa) , vinyl acetate hamwe nifu ya aside irike ya Ethylene copolymer ifu (Vac / VeoVa), acide acrylic hamwe nifu ya Ethylene copolymer (A / S), vinyl acetate na acide acrylic, hamwe nifu ya aside irike ya Ethylene copolymer (Vac / A / VeoVa) Acide Cool Ethylene ikonje ya homopolymer reberi (PVac), styrene butadiene copolymer rubber ifu (SBR), nibindi.
Ibigize ifu ya latx isubirwamo:
* Redispersible latex ifu mubisanzwe ni ifu yera, ariko hariho nandi mabara make arahari.Ibigize birimo: * Polymer resin: iherereye mu nsi ya porojeri ya reberi, ni nacyo kintu cyingenzi gishobora gukoreshwa mu gukwirakwiza ifu ya latex
* Inyongera (imbere): Yifashishijwe hamwe na resin kugirango uhindure resin.
* Inyongeramusaruro (hanze): Kugirango turusheho kwagura imikorere yifu ya redxersible latex, hiyongereyeho ibikoresho.
Kurinda colloid:
Igice cyibikoresho bya hydrophilique bipfunyitse hejuru yifu ya pisitori ya latx idasubirwaho, inyinshi murizo zishobora kugarurwa.
Kurinda colloid yifu ya latx yatatanye ni inzoga ya polyvinyl.
Kurwanya umutsima: Kuzuza amabuye y'agaciro meza cyane cyane akoreshwa mu gukumira ifu ya reberi mugihe cyo kubika no kuyitwara, no koroshya urujya n'uruza rw'ifu (guta mu mifuka y'impapuro cyangwa mu modoka ya tank)
Uruhare rwaRDP:
* Ifu ya redispersible latex ikora firime nyuma yo gutatanya kandi ikora nka kabiri ifata imbaraga kugirango yongere imbaraga;
* Kurinda colloid yakirwa na sisitemu ya minisiteri (ntabwo yangizwa namazi nyuma yo gukora firime, cyangwa "ikwirakwizwa rya kabiri":
* Filime ikora firime ya resin ikwirakwizwa nkibikoresho bishimangira sisitemu yose ya minisiteri, bityo bikongerera ubumwe bwa minisiteri:
Imikorere y'ibicuruzwa:
Ifu ya redispersible latex ikozwe mumavuta ya polymer ukoresheje spray.Nyuma yo kuvanga namazi muri minisiteri, irigana kandi ikwirakwizwa mumazi kugirango ikore amavuta yo kwisiga ihamye.Nyuma yifu ya redxersible latex yama emulisale hanyuma ikwirakwizwa mumazi, amazi arahumuka, agakora firime ya polymer mumabuye kugirango atezimbere imikorere ya minisiteri.Ifu itandukanye isubirwamo ifu ya latx igira ingaruka zitandukanye kumashanyarazi yumye.Mugutezimbere ingaruka zokwirinda, kuramba, no kwambara birwanya minisiteri, ifu yifu ifata yuzuza imyenge ya minisiteri, ikongerera imbaraga kandi ikanarwanya kwambara.Mubikorwa byimbaraga zo hanze, bizabyara kuruhuka bitangiritse.Filime ifata firime irashobora kubaho burundu muri sisitemu ya minisiteri.Kunoza imikorere yubwubatsi bwa minisiteri.
Hariho amavuta yo gusiga hagati yama poro ya polymer yifata, bigatuma ibice bya minisiteri bigenda byigenga, mugihe ifu yifata igira ingaruka zikurura umwuka, provide compressible ya minisiteri no kunoza imikorere yayo mugihe cyo kubaka.Kunoza imbaraga zo guhuza hamwe no guhuriza hamwe.
Nyuma yo gufatwa amashushoifu ya redxersiblenkibikoresho kama, birashobora gukora imbaraga zingana zingana nimbaraga zifatika kubutaka butandukanye.Ifite uruhare runini muguhuza hagati ya minisiteri nibikoresho kama (EPS, ikibaho cyinshi) hamwe nubutaka bworoshye.Ifu ikora polymer ifata ifu ikwirakwizwa nkibikoresho bishimangira sisitemu yose ya minisiteri, byongera ubumwe bwa minisiteri.Mu rwego rwo kunoza ikirere, kurwanya ubukonje, no gukumira ibisasu bya minisiteri, ifu ya latx isubirwamo ni ya resimoplastique, ifite imiterere ihindagurika kandi ishobora gutuma minisiteri ihinduka n’imihindagurikire y’ubukonje n’ibidukikije, bikarinda neza guturika kwa minisiteri bitewe n’ubushyuhe butandukanye. .Mugutezimbere hydrophobicity ya minisiteri no kugabanya kwinjiza amazi, ifu ya latex irashobora gusaranganywa kugirango ikore firime kumyenge no hejuru yubutaka.Filime yometse kuri polymer ntizongera gutatanwa nyuma yo guhura n’amazi, ikarinda gutera amazi no kunoza ubushobozi bwayo.Ifu idasanzwe ya redispersible latex ifitemo hydrophobique ifite hydrophobique nziza.Kunoza imbaraga zunama n'imbaraga zoroshye za minisiteri.
Gusaba ibicuruzwa:
Sisitemu yo kubika urukuta hanze:
Bonding mortar: Menya neza ko minisiteri ifata neza urukuta ku kibaho cya EPS.Kongera imbaraga zo guhuza.
Gupompa minisiteri: Menya neza imbaraga za mashini, kurwanya ibimeneka, kuramba, hamwe ningaruka zo kurwanya sisitemu.
Kwuzuza hamwe: Kudashoboka kwa minisiteri kuriirinde kwinjira mu mazi.Mugihe kimwe, ifite gufatana neza hamwe nimpande za tile ceramic, igipimo gito cyo kugabanuka, no guhinduka.
Kuvugurura amatafari hamwe nimbaho zometseho ibiti: Kunoza imbaraga no guhuza imbaraga za putty kumasoko yihariye (nka tile ceramic, mozayike, pani, nibindi bice byoroshye), ukareba ko putty ifite ihinduka ryiza kugirango ihoshe coefficente yo kwaguka ya substrate.
Masonry na plaster: Kunoza gufata neza amazi.Mugabanye gutakaza amazi kumasemburo meza.
Isima ishingiye ku mazi ya sima:Menya neza imikorere idakoreshwa n’amazi yububiko bwa minisiteri, mugihe ufite kandi gufatana neza nubuso bwibanze, no kunoza imbaraga zo guhonyora no guhindagurika kwa minisiteri.
Kwiyoroshya hasi hasi:Menya neza guhuza modulus ya elastike ya minisiteri, kimwe no kurwanya kunama no guturika.Kunoza imyambarire yo kwambara, guhuza imbaraga, hamwe no guhuriza hamwe.
Imigaragarire ya interineti:Kunoza imbaraga zubuso bwa substrate kandi urebe imbaraga zihuza za minisiteri.
Urukuta rw'imbere n'inyuma:Kunoza imbaraga zihuza za putty kandi urebe ko ifite urwego runaka rwo guhinduka kugirango ugabanye uburyo butandukanye bwo kwaguka no kugabanuka biterwa nuburyo butandukanye.Menya neza ko putty ifite gusaza neza, gusaza, hamwe no kurwanya ubushuhe.
Gusana minisiteri:Menya neza ko coefficente yo kwaguka ya minisiteri ihuye n'iya substrate, kandi ugabanye moderi ya elastike ya minisiteri.Menya neza ko minisiteri ifite hydrophobicity ihagije, guhumeka, nimbaraga zo guhuza.
Amatafari yometse hamwe nuwuzuza:Amatafari ya tile: atanga imbaraga-zihuza imbaraga za minisiteri, zitanga uburyo buhagije bwo guhuza ibice bitandukanye byo kwagura amashyanyarazi ya substrate na ceramic tile.Kunoza ubworoherane bwibikorwa byubwubatsi no kunoza imikorere
Igihe cyo kohereza: Ukwakira-08-2023