A cikin 'yan shekarun nan, da yawa resin roba foda, high-ƙarfi ruwa-resistant roba foda da sauran sosai rahusa foda sun bayyana a kasuwa don maye gurbin gargajiya VAE emulsion (vinyl acetate-ethylene copolymer), wanda aka fesa-bushe da kuma. sake yin amfani da su.Za a iya tarwatsa foda na latex, to menene bambanci tsakanin foda na roba na resin da kuma foda mai yuwuwa, zai iya maye gurbin foda na latex wanda za'a iya rarrabawa?Cibiyar Fasaha ta Yongqiang Mortar za ta jagorance ku don yin nazari a taƙaice tsakanin su biyun don bayanin ku:
1. Redispersible latex foda
A halin yanzu, da yadu amfani dispersible polymer powders a duniya ne: vinyl acetate da ethylene copolymer roba foda (VAC / E), ethylene da vinyl chloride da vinyl laurate terpolymer roba foda (E / VC / VL), acetic acid Vinyl ester da kuma ethylene da mafi girma fatty acid vinyl ester terpolymer roba foda (VAC / E / VeoVa), wadannan uku dispersible polymer powders mamaye dukan kasuwa, musamman vinyl acetate da ethylene copolymer roba foda VAC / E / VeoVa E, yana da babban matsayi a cikin duniya. filin da kuma wakiltar fasaha halaye na tarwatsa polymer powders.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. Samun mafi yawan ƙwarewar aikace-aikacen a cikin filin gini;
3. Zai iya saduwa da kaddarorin rheological da ake buƙata ta turmi (watau aikin da ake buƙata);
4. Gudun polymer tare da sauran monomers yana da halaye na ƙananan mahadi maras kyau (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. Yana da babban juriya na saponification;
7. Yana da mafi fadi da gilashin canjin zafin jiki (Tg);
8. Yana da in mun gwada da kyau m bonding, sassauci da kuma inji Properties;
9. Samun kwarewa mafi tsawo a cikin samar da sinadarai game da yadda za a samar da samfurori masu inganci da kwarewa wajen kiyaye kwanciyar hankali;
10. Yana da sauƙi a haɗa tare da colloid mai kariya (alcohol polyvinyl) tare da babban aiki.
2. Guduro foda
Yawancin foda na roba na "gudu" a kasuwa sun ƙunshi sinadarin DBP.Kuna iya bincika illar wannan sinadari, wanda ke shafar aikin jima'i na maza.Yawancin irin wannan foda na roba suna tarawa a cikin ɗakunan ajiya da dakunan gwaje-gwaje, kuma suna da ƙarfi zuwa wani matsayi.Kasuwar birnin Beijing, wadda ta shahara wajen samar da “foda na roba”, a yanzu ta fito da wani nau’in “foda na roba” da aka jika a cikin sauran sinadaran da ke dauke da sunaye daban-daban: foda mai karfi mai jure ruwa, foda mai mannewa, da dai sauransu. :
1. Rashin tarwatsawa mara kyau, wasu suna jin jika, wasu suna jin flocculent (ya kamata ya zama abu mara kyau kamar sepiolite), wasu kuma fari ne kuma bushewa kadan amma har yanzu suna wari;
2. Yana wari sosai;
3. An ƙara wasu launuka, kuma launuka na yanzu sune fari, rawaya, launin toka, baki, ja, da dai sauransu;
4. Ƙarin adadin yana da ƙananan ƙananan, kuma adadin adadin don ton daya shine 5 ~ 12 kg;
5. Ƙarfin farko yana da ban mamaki.Simintin ba shi da ƙarfi har tsawon kwanaki uku, kuma yana iya lalata allon rufewa kuma ya manne shi.
6. An ce ana iya amfani da allon XPS ba tare da wakili ba.
Ta hanyar samfuran da aka samu ya zuwa yanzu, ana iya ƙarasa da cewa resin ne na tushen ƙarfi wanda aka tallata shi ta kayan porous marasa nauyi, amma mai siyarwa yana so ya guje wa kalmar “narke” da gangan, don haka ana kiranta “roba foda”
kasawa:
1. Yanayin juriya na sauran ƙarfi shine babban matsala.A cikin rana, zai canza a cikin ɗan gajeren lokaci.Ko da ba a cikin rana ba, haɗin haɗin gwiwa zai rushe da sauri saboda gina rami;
2. Juriya na tsufa, sauran ƙarfi ba yanayin zafi ba, 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 akwai matsala a mataki na gaba, tasirin zai zama m;
4. Babu wani misali don aikace-aikacen waje.Tare da babban ƙwarewar masana'antar sinadarai na asali a ƙasashen waje, ba zai yuwu a gano wannan abu ba.
taƙaitawa:
Rubutun polymer foda:
1. The redispersible latex foda samfurin ne mai ruwa-soluble redispersible foda, wanda shi ne copolymer na ethylene da vinyl acetate, kuma yana amfani da polyvinyl barasa a matsayin m colloid.
2. VAE redispersible latex foda yana da kayan samar da fina-finai, 50% maganin ruwa ya haifar da emulsion, kuma yana samar da fim din filastik bayan an sanya shi a kan gilashi don 24 hours.
3. Fim ɗin da aka kafa yana da wasu sassauƙa da juriya na ruwa.Zai iya kaiwa ma'auni na ƙasa.
4. The redispersible latex foda yana da babban yi: yana da high bonding ikon, musamman yi da kuma fice waterproof yi, mai kyau bonding ƙarfi, ya ba da turmi da kyau kwarai alkali juriya, kuma zai iya inganta adhesiveness da flexural ƙarfi na turmi., Plasticity, sa juriya da ginawa, yana da sassaucin ƙarfi a cikin turmi mai hana fashewa.
Resin foda:
1. Resin roba foda sabon nau'in gyare-gyare ne don roba, guduro, macromolecular polymer, ƙasa roba foda da sauran abubuwa.
2. Guduro roba foda yana da janar karko, abrasion juriya, matalauta dispersibility, wasu jin flocculent (ya kamata a porous abu kamar sepiolite), da fari foda (amma yana da pungent wari 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 roba foda sun kasance ƙasa da na latex foda.Juriyar yanayi babbar matsala ce.A cikin rana, zai canza a cikin ɗan gajeren lokaci.Ko da ba a cikin rana, da bonding dubawa, Tun da shi ne wani rami yi, shi kuma za ta bazu da sauri.
5. Resin roba foda ba shi da moldability, ko sassauci.Dangane da ma'aunin dubawa na turmi mai rufewa na waje don bangon waje, ƙimar lalata kawai na allon polystyrene ya dace da ma'auni.Sauran alamomin ba su kai ma'auni ba.
6. Resin foda za a iya amfani da kawai don bonding polystyrene allon, ba don bonding na vitrified beads da fireproof allon.
Lokacin aikawa: Oktoba-31-2022