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. wanda aka yi da foda na roba mai sake yin fa'ida.Watsewar latex foda, to menene bambanci tsakanin resin foda da resin foda foda, zai iya maye gurbin resin foda?
A taƙaice nazarin bambancin da ke tsakanin waɗannan biyun don tunani:
01. Redispersible latex foda
A halin yanzu, da redispersible latex 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 latex 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.
02. Guduro foda
Yawancin "gudu" foda na roba a kasuwa ya ƙunshi sinadarin DBP.Kuna iya bincika illar wannan sinadari, wanda ke shafar aikin jima'i na maza.Yawan irin wannan foda na roba yana tarawa a cikin ma'ajiyar kaya da kuma a cikin dakin gwaje-gwaje, kuma yana da ƙayyadaddun yanayi.Kasuwar birnin Beijing, wacce ta shahara da yawan “foda na roba”, yanzu tana da sunaye iri-iri na “foda roba” da aka jika a cikin kaushi: foda mai karfin ruwa mai jure ruwa, foda na roba, da dai sauransu. Halayen dabi’a:
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 da bushewa 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 dubawa;
Ta hanyar samfuran da aka samu ya zuwa yanzu, ana iya ƙarasa da cewa resin ne na tushen ƙarfi wanda aka tallata shi ta hanyar kayan porous mai haske, amma mai siyarwa yana so ya guje wa kalmar “kauri” da gangan, don haka ana kiranta “roba 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.
Redispersible latex foda
1. The redispersible latex 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 latex 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 latex foda yana da babban aiki: yana da ƙarfin haɗin gwiwa, aiki na musamman da ingantaccen aikin hana ruwa, ƙarfin haɗin gwiwa mai kyau, yana ba da turmi tare da kyakkyawan juriya na alkali, kuma yana iya inganta mannewa da ƙarfin flexural na turmi Baya ga filastik, sa juriya. da kuma gini, yana da ƙwaƙƙwaran sassauƙa a cikin turmi mai hana fashewa.
guduro foda
1. Resin roba foda wani sabon nau'in gyare-gyare ne don samfurori irin su roba, guduro, babban polymer kwayoyin halitta, da kuma foda mai laushi mai laushi;
2. Resin roba foda yana da karko na gabaɗaya, juriya mara kyau, tarwatsewa mara kyau, wasu suna jin flocculent (ya kamata ya zama abu mara kyau 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 roba foda sun kasance ƙasa da na latex 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 kasance saboda ginin rami, zai kuma rushe da sauri;
5. Resin roba 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 roba foda za a iya amfani da kawai don bond polystyrene allon, ba vitrified beads da wuta hana allunan.
Lokacin aikawa: Juni-02-2023