Redispersible latex podaimodified lotion powder inowanikwa nekupfapfaidza kuomeswa kwebinary kana ternary copolymer yevinylacetase uye ethylene tert carbonate VoVa kana alkene kana acrylic acid.Iine yakanaka redispersibility, uye inodhindwa zvakare kuita lotion kana yasangana nemvura, uye makemikari ayo akafanana neayo ekutanga.
Tsvagiridzo padzokororo yelatex poda yakatanga muna 1934 iine IG Farbenindus AC muGermany polyvinylidene acid redispersible latex poda.
Uye Japanese poda latex.Hondo Yenyika II yapera, pakanga paine kushomeka kukuru kwevashandi uye zviwanikwa zvekuvaka, zvichimanikidza Europe, kunyanya Germany, kushandisa zvinhu zvakasiyana-siyana zvekuvakisa zvehupfu kuvandudza kugona kwekuvaka.Mukupera kwema1950, Germany's Hearst Company neWacker Chemical Company yakatanga kugadzirwa kwemaindasitiri yehupfu inodhindwa.Panguva iyoyo, iyo redispersible latex poda yainyanya yerudzi rwepolyvinyl acetate, yainyanya kushandiswa kugadzira matanda anonamira, madziro primer, uye simende madziro zvinhu.Nekudaro, nekuda kwekugumira kwePVAc adhesive poda yakakwira firimu rekuita tembiricha, kusamira zvakanaka kwemvura, uye kushomeka kwealkali, kushandiswa kwayo kune kushomeka.
Nekubudirira kwemaindasitiri kweVAE lotion uye VA/VeoVa lotion,redispersible emulsion powderine tembiricha shoma yekugadzira firimu ye0C, kumira zvakanaka kwemvura uye kushorwa kwealkali kwakagadzirwa muma1960.Mushure meizvozvo, kushandiswa kwayo kwakasimudzirwa zvakanyanya muEurope, uye chiyero chekushandiswa kwayo chakawedzera zvishoma nezvishoma kune akasiyana-siyana ezvivakwa uye asiri ezvimiro zvekunamira, yakaoma yakasanganiswa dhaka shanduko, kuvharira madziro uye kupedzisa masisitimu, madziro screed uye yekuisa chisimbiso Munda wehupfu hwekuputira uye putty yekuvaka. .
Kugadzirwa mudzimba kwe redispersible latex powder Mumakore achangopfuura, kudiwa kweredispersible latex podamuEurope neNorth America yakakura zvishoma nezvishoma.Kusiyana neizvi, nekushandiswa zvishoma nezvishoma kwemutemo wekuchengetedza simba rekuvaka kweChina uye kusimudzirwa kwakasimba kwedhaka rakaoma rakasanganiswa rezvivakwa, kushandiswa kwehupfu hwelatex inodhindwa muChinese Mainland kwakawedzera nekukurumidza.Makambani ekunze ekunze nemamwe mabhizinesi emumba akatangisawo mapurojekiti ehupfu hwelatex hunowanwa munyika yose.Zvinoenderana nenhamba dzenyanzvi dzakakosha, muna 2003, kugadzirwa kwepasirese redispersible latex poda yaive 190000 matani, ainyanya kushandiswa muEurope neNorth America.Kushandiswa mumusika weChinese kwaive pasi pe5000 matani.Zvakadaro, muna 2007, kushandiswa kwemusika kwehupfu hwelatex hunogona kudzokororwa kuChina kwakange kwasvika 450000 matani, nevatengesi vakuru vari Dalian Chemical, Wacker wekuGermany, uye National Starch kubva kuUnited States.Zvinofanotaurwa kuti ne2010, kudiwa kwe redispersible latex powder muChina kuchasvika 100000 matani.
Mhando dze redispersible latex powder:
Iwo makuru marudzi e redispersible latex poda parizvino ari kushandiswa pamusika ndeaya:
Vinyl acetate uye ethylene copolymer poda (Vac/E), ethylene uye vinyl chloride, uye montmorillonite ethylene ternary copolymer poda (E/Vc/VL), vinyl acetate uye ethylene uye yakakwira fatty acid ethylene ternary copolymer hupfu (Vac/E/ Vero). , vinyl acetate uye yakakwira fatty acid ethylene copolymer hupfu (Vac/VeoVa), acrylic acid uye ethylene copolymer hupfu (A/S), vinyl acetate uye acrylic acid, uye yakakwirira fatty acid ethylene copolymer upfu (Vac/A/VeoVa) Asidhi inotonhorera. ethylene inotonhorera homopolymer rubber powder (PVac), styrene butadiene copolymer rubber powder (SBR), nezvimwewo.
Kuumbwa kwe redispersible latex powder:
* Redispersible latex poda inowanzo chena hupfu, asi kune zvakare mashoma mamwe mavara aripo.Zvikamu zvaro zvinosanganisira: * Polymer resin: iri pakati peiyo rubber poda zvimedu, zvakare ndicho chinhu chikuru chinogona kushandiswa kuparadzira latex poda.
* Yekuwedzera (yemukati): Inoshandiswa pamwe chete neresin kugadzirisa resin.
*Zviwedzerwa (zvekunze): Kuti uwedzere kuwedzera kushanda kwelatex powder, zvimwe zvinhu zvinowedzerwa.
Dziviriro colloid:
Iyo dhizaini ye hydrophilic zvinhu yakaputirwa pamusoro pezve inodhispersible latex poda zvimedu, mazhinji acho anogona kudhindwa zvakare.
Iyo inodzivirira colloid yeakapararira latex poda ndeye polyvinyl doro.
Anti caking agent: Yakanaka mineral filler inonyanya kushandiswa kudzivirira kubikwa kwerabha poda panguva yekuchengetedza uye yekufambisa, uye kufambisa kuyerera kwerabha poda (kurasa kubva mumabhegi emapepa kana matangi mota)
Basa reRDP:
*Iyo inodhindwazve latex poda inoumba firimu mushure mekupararira uye inoshanda sechipiri chekunamira kuwedzera simba rayo;
* Iyo inodzivirira colloid inotorwa nedhaka system (haizokuvadzwa nemvura mushure mekuumbwa kwefirimu, kana "kupararira kwechipiri":
* Iyo firimu-inogadzira polymer resin inogoverwa sechinhu chinosimbisa mukati mese dhaka system, nekudaro ichiwedzera kubatana kwedhaka:
Kuita kwechigadzirwa:
Redispersible latex poda inogadzirwa kubva ku polymer lotion nekupfapfaidza kuomesa.Mushure mekusanganiswa nemvura mudhaka, inoiswa emulsified uye yakaparadzirwa mumvura kuti iite yakagadzikana yepolymer lotion zvakare.Mushure meiyo redispersible latex poda yaiswa emulsified uye yakaparadzirwa mumvura, mvura inoputika, ichiita firimu repolymer mudhaka kuti rivandudze kushanda kwedhaka.Yakasiyana redispersible latex poda ine mhedzisiro dzakasiyana pane yakaoma poda dhaka.Nekuvandudza maitiro ekupikisa, kusimba, uye kupfeka kuramba kwedhaka, iyo inonamira poda zvimedu zvinozadza ma pores edhaka, zvichiwedzera compactness uye nekuvandudza kupfeka kwayo kuramba.Pasi pekuita kwemasimba ekunze, inoburitsa kuzorora pasina kukuvadzwa.Mafirimu anonamira epolymer anogona kuvapo zvachose mumatope masisitimu.Kuvandudza kushanda kwekuvaka dhaka.
Iko kune mafuta ekuzora pakati pezvimedu zvepolymer adhesive poda, zvichibvumira kuti dhaka riyerere rakazvimiririra, nepo hupfu hwekunamatira huine hunhu hwemhepo, p.rovide compressibility yedhaka uye inovandudza kushanda kwayo panguva yekuvaka.Kuvandudza simba rekubatanidza uye kubatana kwedhaka.
Mushure mekutorwa firimu naredispersible latex podase organic binder, inogona kuumba yakakwirira tensile simba uye anamira simba pane akasiyana substrates.Inoita basa rakakosha mukunamatira pakati pedhaka uye organic zvinhu (EPS, extruded foam board) uye yakatsetseka pasi substrate.Iyo firimu-inogadzira polymer adhesive poda inogoverwa sechinhu chinosimbisa mukati mese dhaka system, ichiwedzera kubatanidzwa kwedhaka.Kuvandudza kusamira kwemamiriro ekunze, kuomesa-kunyunguduka kuramba, uye kudzivirira kuputika kwedhaka, redispersible latex poda ndeye thermoplastic resin, ine yakanaka kuchinjika uye inogona kuita kuti dhaka rienderane nekutonhora kwekunze uye kupisa kwemamiriro ekunze shanduko, zvinodzivirira kudzivirira kuputika kwedhaka nekuda kwekusiyana kwekushisa. .Nekuvandudza hydrophobicity yedhaka uye kuderedza kunyura kwemvura, latex poda inogona kuparadzirwa zvakare kuita firimu pane pore uye pamusoro pedhaka.Iyo polymer adhesive firimu haizoparadzwi zvakare mushure mekusangana nemvura, kudzivirira kupinda kwemvura uye kugadzirisa kusapinda kwayo.Special redispersible latex poda ine hydrophobic effect ine nani hydrophobic effect.Kuvandudza simba rekukombama uye kushanduka kwesimba redhaka.
Product application:
External wall insulation system:
Bonding mortar: Ita shuwa kuti dhaka rinonamatira zvakasimba madziro kune EPS board.Kuvandudza kubatana kwesimba.
Plastering dhaka: Ita shuwa kusimba kwemechani, kutsemuka kuramba, kusimba, uye kukanganisa kuramba kweiyo insulation system.
Joint filler: kusapinda kwedhaka kusvikakudzivirira kupindira kwemvura.Panguva imwecheteyo, ine kunamatira kwakanaka nemapendero ematairi eceramic, yakaderera shrinkage rate, uye kuchinjika.
Tile renovation uye mapuranga bhodhi plastering putty: Kuvandudza adhesion uye kubatanidza simba re putty pane akakosha substrates (senge ceramic mataira, mosaics, plywood, uye dzimwe nzvimbo dzakatsetseka), kuve nechokwadi chekuti putty ine yakanaka kuchinjika kuomesa yekuwedzera coefficient ye substrate.
Masonry uye plastering dhaka: Kuvandudza kuchengetedza kwemvura.Deredza kurasikirwa kwemvura pane porous substrates.
Cement based waterproof dhaka:Ita shuwa mashandiro emvura emvura yekuvhara maumbwe, nepo kuve nekudyidzana kwakanaka nechisimba nechisimba, uye kugadzirisa simba rekumanikidza uye rinoshanduka-shanduka remagetsi.
Self leveling floor mortar:Ita shuwa kuenderana kweiyo elastic modulus yedhaka, pamwe nekupokana kwayo pakukotama uye kuputika.Kuvandudza kupfeka kuramba, simba rekubatanidza, uye kubatana kwedhaka.
Interface mortar:Kuvandudza simba repamusoro pe substrate uye chengetedza kusimba kwekubatanidza kwedhaka.
Interior uye kunze wall putty:Kuvandudza kusimba kwechisungo cheputty uye ive nechokwadi chekuti ine imwe dhigirii yekuchinjika kumisikidza iyo yakasiyana yekuwedzera uye kudzvanya kushushikana kunogadzirwa neakasiyana base layer.Ita shuwa kuti iyo putty ine yakanaka kuchembera kuramba, kusamira, uye hunyoro kuramba.
Gadzirisa dhaka:Ita shuwa kuti iyo yekuwedzera coefficient yedhaka inoenderana neiyo substrate, uye kuderedza elastic modulus yedhaka.Ita shuwa kuti dhaka rine hydrophobicity yakakwana, kufema, uye simba rekubatanidza.
Tile adhesive uye joint filler:Tile inonamira: inopa yakakwirira-kusimba chisungo chedhaka, ichipa kukwana kuchinjika kudzvanya akasiyana ekuwedzera ekupisa kwemafuta eiyo substrate uye ceramic mataira.Kuvandudza kureruka kwemabasa ekuvaka uye kuvandudza kushanda zvakanaka
Nguva yekutumira: Oct-08-2023