I-latex powder enokuchithwa kwakhonangumgubo wokuthambisa olungisiweyo ofunyenwe ngokutshiza ukomiswa kwebinary okanye ternary copolymer yevinylacetase kunye ne-ethylene tert carbonate VoVa okanye ialkene okanye i-acrylic acid.Inokwazi ukuphinda iphinde ikwazi ukuphinda ikwazi ukuphinda ikwazi ukuphinda iphinde ikwazi ukuphinda iphinde iphinde ikwazi ukuphinda isetyenziswe xa idibana namanzi, kwaye iimpawu zayo zekhemikhali ziyafana neloshini yokuqala.
Uphando kwi-powder latex enokuchithwa kwakhona yaqala kwi-1934 kunye ne-IG Farbenindus AC eJamani i-polyvinylidene acid redispersible latex powder.
Kunye neJapan powder latex.Emva kweMfazwe Yehlabathi II, kwabakho ukunqongophala okukhulu kwezixhobo zokusebenza nezokwakha, nto leyo eyanyanzela iYurophu, ingakumbi iJamani, ukuba isebenzise izixhobo zokwakha ezahlukahlukeneyo zomgubo ukuze kuphuculwe ukusebenza kakuhle kolwakhiwo.Ngasekupheleni koo-1950, iNkampani yaseJamani yeHearst kunye neWacker Chemical Company yaqala ukuveliswa kwemveliso yomgubo welatex onokuphinda uhlakazwe.Ngelo xesha, i-latex powder ehlaziywayo yayiyi-polyvinyl acetate yodidi, ubukhulu becala isetyenziselwa i-adhesive yeplanga, i-primer yodonga, kunye nezixhobo zodonga lwesamente.Nangona kunjalo, ngenxa yokusikelwa umda kwePVAc yokuncamathelisa ubushushu obuphezulu bokwenza ifilimu, ukunganyangeki kwamanzi, kunye nokunganyangeki kwealkali, ukusetyenziswa kwayo kulinganiselwe kakhulu.
Ngokuqhutywa ngempumelelo kwemizi-mveliso ye-VAE lotion kunye ne-VA/VeoVa lotion,i-emulsion powder efumanekayo kwakhonakunye nobushushu obuncinci befilimu obuyi-0C, ukuxhathisa okulungileyo kwamanzi kunye nokumelana ne-alkali kwaphuhliswa kwi-1960s.Emva koko, isicelo salo sakhuthazwa ngokubanzi eYurophu, kunye nobubanzi besicelo saso ngokuthe ngcembe sandiswa ukuya kwii-adhesives ezahlukeneyo zesakhiwo kunye nezingezona izakhiwo, ukuguqulwa kodaka oluxubeneyo olomileyo, ukugquma eludongeni kunye neenkqubo zokugqiba, i-screed eludongeni kunye ne-plaster yokutywina. .
Imveliso yasekhaya ye-latex powder edispersible Kwiminyaka yakutshanje, imfuno yei-latex powder enokuchithwa kwakhonaeYurophu nakuMntla Merika iye yakhula ngokucothayo.Ngokuchasene noko, ngokuphunyezwa kancinci kancinci komgaqo-nkqubo wogcino lwamandla wokwakha waseTshayina kunye nokukhuthazwa ngamandla kodaka olomileyo oluxubeneyo lwezakhiwo, ukusetyenziswa komgubo welatex odispersible e-China Mainland kuye kwanda ngokukhawuleza.Iinkampani zamazwe angaphandle kunye namanye amashishini asekhaya nawo aphehlelele iiprojekthi zomgubo welatex onokuphinda usasazwe kwilizwe liphela.Ngokweenkcukacha-manani zeengcali ezifanelekileyo, kwi-2003, ukuveliswa kwehlabathi jikelele kwe-latex powder edibeneyo yayiyi-190000 yeetoni, ezisetyenziswa kakhulu eYurophu naseMntla Melika.Ukusetyenziswa kwimarike yaseTshayina yayingaphantsi kweetoni ezingama-5000.Nangona kunjalo, kwi-2007, ukusetyenziswa kwemarike ye-latex powder e-dispersible e-China iye yafikelela kwiitoni ze-450000, kunye nababoneleli abakhulu be-Dalian Chemical, i-Wacker evela eJamani, kunye ne-National Starch evela e-United States.Kuqikelelwa ukuba ngo-2010, imfuno ye-latex powder ehlaziywayo e-China iya kufikelela kwiitoni ze-100000.
Iindidi ze-latex powder eziphinda zihlakazwe:
Ezona ntlobo ziphambili ze-latex powder enokuphinda isetyenziswe ngoku esetyenziswa kwimarike zezi:
IVinyl acetate kunye ne-ethylene copolymer powder (Vac/E), i-ethylene kunye nevinyl chloride, kunye ne-montmorillonite ethylene ternary copolymer powder (E/Vc/VL), ivinyl acetate kunye ne-ethylene kunye ne-fatty acid ephezulu ethylene ternary copolymer powder (Vac/E/Vero , ivinyl acetate kunye ne-fatty acid ephezulu ethylene copolymer powder (Vac/VeoVa), i-acrylic acid kunye ne-ethylene copolymer powder (A/S), ivinyl acetate kunye ne-acrylic acid, kunye ne-fatty acid ephezulu ethylene copolymer powder (Vac/A/VeoVa) ethylene cool homopolymer rubber powder (PVac), styrene butadiene copolymer rubber powder (SBR), njl.
Ukudityaniswa komgubo welatex onokuphinda uhlakazwe:
*I-latex powder ephinda ihlakazwe idla ngokuba ngumgubo omhlophe, kodwa kukwakho neminye imibala embalwa ekhoyo.Amacandelo ayo abandakanya: * I-polymer resin: ibekwe kumbindi we-rubber powder particles, ikwayeyona nto iphambili enokusetyenziswa ukusasaza i-latex powder.
*Eyongeziweyo (yangaphakathi): Isetyenziswa kunye nentlaka ukuguqula intlaka.
*Izongezelelo (zangaphandle): Ukuze ukwandise ngakumbi ukusebenza kwe-latex powder ephindayo, izinto ezongezelelweyo zongezwa.
I-colloid ekhuselayo:
Umaleko wemathiriyeli ye-hydrophilic esongelwe kumphezulu wamasuntswana omgubo welatex anokuphinda ahlakazwe, uninzi lwayo lunokuphinda luhlakazwe.
I-colloid ekhuselayo ye-latex powder esasaziweyo yi-polyvinyl alcohol.
I-Anti caking agent: I-fine mineral filler isetyenziselwa ukukhusela i-caking yomgubo werabha ngexesha lokugcina kunye nokuthutha, kunye nokuququzelela ukuhamba komgubo werabha (ukulahlwa kwiingxowa zephepha okanye iimoto zetanki)
Indima yeiRDP:
*I-latex powder enokuphinda ihlakazwe yenza ifilimu emva kokusasazeka kwaye isebenza njengencamathela yesibini ukomeleza amandla ayo;
*I-colloid ekhuselayo ifunxwa yinkqubo yodaka (ayiyi konakaliswa ngamanzi emva kokwenziwa kwefilimu, okanye "ukusasazeka okwesibini":
*Ifilim-eyenza i-polymer resin isasazwa njengento yokomeleza kuyo yonke inkqubo yodaka, ngaloo ndlela inyusa ukudityaniswa kodaka:
Ukusebenza kwemveliso:
Redispersible latex powder yenziwe ngepolymer lotion ngokomiswa ngesitshizi.Emva kokuxuba kunye namanzi kwi-mortar, i-emulsified kwaye ihlakazwe emanzini ukwenza i-polymer lotion ezinzileyo kwakhona.Emva kokuba i-latex powder ehlaziywayo i-emulsified kwaye ihlakazwe emanzini, amanzi aphuphuma, enze ifilimu ye-polymer kumdaka wokuphucula ukusebenza kodaka.Umgubo welatex odityanisiweyo owahlukileyo uneempembelelo ezahlukeneyo kudaka olomileyo lomgubo.Ngokuphucula ukuchasana kwempembelelo, ukuqina, kunye nokuxhatshazwa kokugqoka komdaka, iinqununu ze-adhesive powder zigcwalisa iipores zodaka, zikhulise ukudibanisa kwayo kunye nokuphucula ukuxhathisa kwayo.Ngaphantsi kwesenzo samandla angaphandle, kuya kuvelisa ukuphumla ngaphandle kokulimala.Iifilimu zokuncamathelisa iipolymer zinokubakho ngokusisigxina kwiinkqubo zodaka.Ukuphucula ukusebenza kolwakhiwo lodaka.
Kukho umphumo wokuthambisa phakathi kweengqungquthela zepolymer adhesive powder, evumela ukuba iinqununu zodaka zihambe ngokuzimeleyo, ngelixa i-adhesive powder inefuthe elibangela umoya, p.rovide ukunyanzeliswa kodaka kunye nokuphucula ukusebenza kwayo ngexesha lokwakha.Ukuphucula amandla okudibanisa kunye nokudityaniswa kodaka.
Emva kokufotwa kunyei-latex powder enokuchithwa kwakhonanjengesibophelelo sezinto eziphilayo, inokwenza ukomelela okuphezulu kunye namandla okuncamathela kwii-substrates ezahlukeneyo.Idlala indima ebalulekileyo ekunamatheleni phakathi kodaka kunye nezinto eziphilayo (i-EPS, ibhodi ye-foam ekhutshweyo) kunye ne-substrate egudileyo.Ifilimu yokwenza i-polymer adhesive powder ihanjiswa njengento yokuqinisa kuyo yonke inkqubo yodaka, ukwandisa ukudibanisa komdaka.Ukuphucula ukuxhathisa kwemozulu, ukuchasana nomkhenkce, kunye nokuthintela ukuqhekeka kodaka, i-latex powder iphinda iphinde iphinde ibe yintlaka ye-thermoplastic, enokuguquguquka okuhle kwaye inokwenza udaka luqhelane nokubanda kwangaphandle kunye nokutshintsha kwemeko eshushu, ukuthintela ngokufanelekileyo ukuqhekeka kodaka ngenxa yokungafani kobushushu. .Ngokuphucula i-hydrophobicity yodaka kunye nokunciphisa ukunyuswa kwamanzi, i-latex powder ingaphinda ihlakazwe ukuze yenze ifilimu kwi-pore kunye nomgangatho wodaka.Ifilimu ye-polymer adhesive ayiyi kuphinda ihlakazwe emva kokudibana namanzi, ukukhusela ukuhlasela kwamanzi kunye nokuphucula ukungabonakali kwayo.I-latex ekhethekileyo ye-latex powder enefuthe le-hydrophobic inefuthe elingcono le-hydrophobic.Ukuphucula amandla okugoba kunye namandla okuguquguquka kodaka.
Ukusetyenziswa kwemveliso:
Inkqubo yokugquma eludongeni yangaphandle:
Udaka lwe-Bonding: Qinisekisa ukuba udaka lubambelela ngokuqinileyo eludongeni kwibhodi ye-EPS.Ukuphucula amandla okudibanisa.
Udaka lokutyabeka: Qinisekisa amandla oomatshini, ukunganyangeki kokuqhekeka, ukuqina, kunye nokumelana nempembelelo yenkqubo yokugquma.
Isihluzi esidibeneyo: Ukunganyameki kodaka ukuyathintela ukungena kwamanzi.Kwangaxeshanye, inokubambelela kakuhle kwimida yeethayile ze-ceramic, isantya esisezantsi sokuncipha, kunye nokuguquguquka.
Ukulungiswa kwethayile kunye nebhodi yeplanga yokutyabeka iputty: Ukuphucula ukunamathela kunye namandla okubopha kwi-putty kwi-substrates ezikhethekileyo (ezifana neethayile ze-ceramic, i-mosaics, i-plywood, kunye nezinye iindawo ezigudileyo), ukuqinisekisa ukuba i-putty inokuguquguquka okulungileyo ukucinezela i-coefficient yokwandisa isubstrate.
Imasonry kunye nodaka lokutyabeka: Ukuphucula ukugcinwa kwamanzi.Nciphisa ilahleko yamanzi kwi-porous substrates.
Udaka lwesamente olungangenwa ngamanzi:Qinisekisa ukusebenza kokungangeni kwamanzi kodaka lodaka, ngelixa ukwanamatheliswa kakuhle kunye nomgangatho wesiseko, kwaye uphucule amandla oxinzelelo kunye nokuguquguquka kodaka.
Udaka lomgangatho wokuzilinganisa:Qinisekisa ukuhambelana kwemodyuli e-elastic yodaka, kunye nokuchasana kwayo nokugoba kunye nokuqhekeka.Ukuphucula ukuxhathisa ukunxiba, amandla okubopha, kunye nokudityaniswa kodaka.
Udaka lojongano:Ukuphucula amandla omhlaba we-substrate kwaye uqinisekise amandla okudibanisa udaka.
I-putty yodonga lwangaphakathi nangaphandle:Ukuphucula amandla okudibanisa i-putty kwaye uqinisekise ukuba unomlinganiselo othile wokuguquguquka ukukhupha ukwanda okwahlukeneyo kunye noxinzelelo oluncinci oluveliswa ngamaleko ahlukeneyo asisiseko.Qinisekisa ukuba i-putty inokumelana nokuguga okulungileyo, ukunganyangeki, kunye nokumelana nokufuma.
Lungisa udaka:Qinisekisa ukuba i-coefficient yokwandisa i-mortar ihambelana ne-substrate, kunye nokunciphisa i-modulus elastic yodaka.Qinisekisa ukuba udaka lune-hydrophobicity eyaneleyo, ukuphefumla, kunye namandla okudibanisa.
I-adhesive ye-tile kunye ne-joint filler:I-adhesive ye-Tile: ibonelela ngamandla aphezulu okudibanisa udaka, ukubonelela ukuguquguquka okwaneleyo ukuxinzelela i-coefficients yokwandiswa kwe-thermal eyahlukeneyo ye-substrate kunye neetayile ze-ceramic.Ukuphucula ukulula kwemisebenzi yokwakha kunye nokuphucula ukusebenza kakuhle
Ixesha lokuposa: Oct-08-2023