A cikin 'yan shekarun nan, mai yawa resin polymer foda, high-ƙarfin ruwa-resistant polymer foda da sauran sosai cheap polymer foda sun bayyana a kasuwa don maye gurbin gargajiya VAE emulsion (vinyl acetate-ethylene copolymer), wanda aka fesa-bushe da kuma wanda aka yi da foda na polymer mai sake yin fa'ida.Rubutun polymer foda, don haka menene bambanci tsakanin guduro foda da redispersible polymer foda, zai iya guduro foda maye gurbin redispersible polymer foda?Cibiyar Fasaha ta Mortar za ta jagorance ku don yin nazari a taƙaice bambanci tsakanin su biyu don bayanin ku:
(1), polymer foda mai iya tarwatsawa
A halin yanzu, da redispersible polymer powders amfani da ko'ina a duniya su ne: vinyl acetate da ethylene copolymer foda (VAC / E), ethylene, vinyl chloride da vinyl laurate ternary copolymer foda (E / VC / VL), acetic acid Vinyl ester, ethylene. kuma mafi girma fatty acid vinyl ester ternary copolymer foda (VAC / E / VeoVa), wadannan uku redispersible polymer powders mamaye dukan kasuwa, musamman vinyl acetate da ethylene copolymer foda VAC / EE, ya mamaye babban matsayi a cikin duniya filin da wakiltar fasaha. halaye na redispersible polymer foda.Har yanzu mafi kyawun mafita na fasaha dangane da ƙwarewar fasaha tare da polymers da aka yi amfani da su don gyaran turmi:
1. Yana daya daga cikin polymers da aka fi amfani da su a duniya;
2. Kwarewar aikace-aikacen a fagen gini shine mafi girma;
3. Yana iya saduwa da rheological Properties da ake bukata da turmi (wato, da ake bukata constructability);
4. Gudun polymer tare da sauran monomers yana da halaye na ƙananan kwayoyin halitta marasa lahani (VOC) da ƙananan iskar gas;
5. Yana da halaye na kyakkyawan juriya na UV, tsayayyar zafi mai kyau da kwanciyar hankali na dogon lokaci;
6. Babban juriya ga saponification;
7. Yana da mafi fadi da gilashin canjin zafin jiki (Tg);
8. Yana da in mun gwada da kyau kwarai m bonding, sassauci da inji Properties;
9. Samun kwarewa mafi tsawo a cikin samar da sinadarai na yadda za a samar da samfurori masu inganci da kwarewa wajen kiyaye kwanciyar hankali;
10. Yana da sauƙin haɗuwa tare da colloid mai karewa (alcohol polyvinyl) tare da babban aiki.
(2), garin guduro
Yawancin "gudu" polymer foda a kasuwa ya ƙunshi sinadarin DBP.Kuna iya bincika illar wannan sinadari, wanda ke shafar aikin jima'i na maza.Yawancin irin wannan nau'in foda na polymer yana tarawa a cikin ɗakin ajiya da kuma a cikin dakin gwaje-gwaje, kuma yana da ƙayyadaddun ƙayyadaddun yanayi.A kasuwar Beijing, wadda ta shahara da yawan “polymer foda”, yanzu akwai “polymer foda” da aka jika a cikin kaushi mai suna daban-daban: foda polymer foda mai ƙarfi mai ƙarfi, foda polymer foda, da dai sauransu Na yau da kullun:
1. Rashin tarwatsawa mara kyau, wasu suna jin jika, wasu suna jin flocculent (ya kamata ya zama abu mara kyau kamar sepiolite), wasu fari ne kuma bushewa kaɗan amma har yanzu suna wari;
2. Yana wari sosai;
3. An kara wasu launuka, kuma launukan da ke bayyana a halin yanzu sune fari, rawaya, launin toka, baki, ja, da sauransu;
4. Adadin ƙari yana da ƙananan ƙananan, kuma adadin adadin ton daya shine 5-12 kg;
5. Ƙarfin farko yana da ban mamaki mai kyau.Simintin ba shi da ƙarfi a cikin kwanaki uku, kuma allon rufewa yana iya lalatawa kuma ya makale;
6. An ce hukumar XPS ba ta buƙatar wakili na sadarwa.
Ta hanyar samfuran da aka samu zuwa yanzu, ana iya ƙaddamar da cewa shi ne resin na tushen ƙarfi wanda aka tallata shi ta hanyar kayan porous mai haske, amma mai siye yana so ya guje wa kalmar "mai narkewa", don haka ake kira "polymer foda".
kasawa:
1. Yanayin juriya na sauran ƙarfi shine babban matsala.A cikin rana, zai ƙafe cikin ɗan gajeren lokaci.Ko da ba a cikin rana ba, haɗin haɗin gwiwa zai rushe da sauri saboda ginin rami;
2. Juriya na tsufa, masu kaushi ba su da zafin jiki, kowa ya san wannan;
3. Tun da tsarin haɗin kai shine narkar da keɓancewa na allon rufewa, akasin haka, yana lalata haɗin haɗin gwiwa.Idan aka sami matsala tare da wannan matsala a mataki na gaba, tasirin zai zama mai mutuwa;
4. Babu wani misali na aikace-aikace a kasashen waje.Tare da balagagge na asali na sinadarai a ƙasashen waje, ba zai yuwu a gano wannan abu ba.
taƙaitawa:
Redispersible polymer foda:
1. A redispersible polymer foda samfurin ne mai ruwa-soluble redispersible foda, wanda shi ne copolymer na ethylene da vinyl acetate, tare da polyvinyl barasa a matsayin m colloid.
2. VAE redispersible polymer foda yana da kayan samar da fina-finai, 50% maganin ruwa ya haifar da emulsion, kuma ya samar da fim din filastik bayan an sanya shi a kan gilashin don 24 hours.
3. Fim ɗin da aka kafa yana da wasu sassauƙa da juriya na ruwa.Zai iya kai matsayin kasa.
4. Redispersible polymer foda yana da babban aiki: yana da ƙarfin haɗin gwiwa, aiki na musamman da kuma yin fice mai hana ruwa, ƙarfin haɗin gwiwa mai kyau, yana ba da turmi tare da kyakkyawan juriya na alkali, kuma yana iya inganta mannewa da flexural ƙarfin turmi Baya ga filastik, sa juriya. da kuma gini, yana da ƙwaƙƙwaran sassauƙa a cikin turmi mai hana fashewa.
Resin foda:
1. Resin polymer foda shine sabon nau'in gyare-gyaren samfurin don polymer, guduro, babban polymer kwayoyin halitta, da ƙananan ƙwayar polymer foda.
2. Resin polymer foda yana da karko na gaba ɗaya, juriya mara kyau, tarwatsewa mara kyau, wasu suna jin flocculent (ya kamata ya zama abu mai laushi kamar sepiolite), kuma akwai farin foda (amma suna da ƙamshi mai kama da kananzir).
3. Wasu foda na guduro suna lalatawa ga hukumar, kuma hana ruwa bai dace ba.
4. Yanayin juriya da juriya na ruwa na resin polymer foda sun kasance ƙasa da na polymer foda.Juriyar yanayi babbar matsala ce.A cikin rana, zai ƙafe cikin ɗan gajeren lokaci.Ko da ba a cikin rana ba, haɗin haɗin gwiwa zai Domin ginin rami ne, zai kuma rushe sauri.
5. Resin polymer foda ba shi da moldability, balle sassauci.Dangane da ka'idodin gwaji don turmi mai rufe bango na waje, ƙimar lalacewar allon polystyrene kawai ya dace da ma'auni.Sauran alamomin ba su kai ma'auni ba.
6. Resin polymer foda za a iya amfani da shi kawai don haɗawa da allunan polystyrene, kuma ba za a iya amfani da su ba don haɗawa da beads vitrified da allon hana wuta.
Lokacin aikawa: Fabrairu-02-2023