A cikin 'yan shekarun nan, foda roba mai yawa na resin, foda roba mai ƙarfi mai jure ruwa da sauran foda roba mai araha sun bayyana a kasuwa don maye gurbin emulsion na gargajiya na VAE (vinyl acetate-ethylene copolymer), wanda aka fesa shi kuma ana iya sake amfani da shi. To menene bambanci tsakanin foda roba na resin da foda latex mai sake juyawa, shin foda roba na resin zai iya maye gurbin foda latex mai sake juyawa? Cibiyar Fasaha ta Yongqiang Mortar za ta jagorance ku don yin ɗan taƙaitaccen nazarin bambanci tsakanin su biyun don ambaton ku:
1. Foda mai latex mai sake lalacewa
A halin yanzu, foda-foda-foda-polymer da ake amfani da su sosai a duniya sune: 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 ethylene da kuma higher fatty acid vinyl ester terpolymer roba foda (VAC/E/VeoVa), waɗannan foda-foda ...
1. Yana ɗaya daga cikin polymers da aka fi amfani da su a duniya;
2. Ka sami mafi yawan ƙwarewar aikace-aikace a fannin gini;
3. Zai iya cika ƙa'idodin rheological da turmi ke buƙata (watau ƙarfin aiki da ake buƙata);
4. Resin polymer tare da wasu monomers yana da halaye na ƙananan mahadi masu canzawa na halitta (VOC) da ƙananan iskar gas masu tayar da hankali;
5. Yana da halaye na juriyar UV mai kyau, juriyar zafi mai kyau da kwanciyar hankali na dogon lokaci;
6. Yana da juriya mai yawa ga saponification;
7. Yana da mafi girman kewayon zafin canjin gilashi (Tg);
8. Yana da kyakkyawan haɗin kai, sassauci da kuma halayen injiniya;
9. Ka sami mafi tsawon lokaci a fannin samar da sinadarai kan yadda ake samar da kayayyaki masu inganci da kuma gogewa wajen kiyaye daidaiton ajiya;
10. Yana da sauƙin haɗawa da colloid mai kariya (polyvinyl alcohol) tare da babban aiki.
2. Foda mai tsami
Yawancin foda na roba "resin" da ake sayarwa a kasuwa suna ɗauke da sinadarin DBP. Za ku iya duba illolin wannan sinadarin sinadarai, wanda ke shafar aikin jima'i na maza. Ana tara irin waɗannan foda na roba a cikin rumbunan ajiya da dakunan gwaje-gwaje, kuma suna da saurin canzawa zuwa wani mataki. Kasuwar Beijing, wacce ta shahara da samar da "foda ta roba", yanzu ta fito da wani nau'in "foda ta roba" da aka jika a cikin sinadarai masu sunaye daban-daban: foda mai ƙarfi mai jure ruwa, foda mai manne na resin, da sauransu. Siffofi na yau da kullun:
1. Rashin narkewar ruwa sosai, wasu suna jin danshi, wasu kuma suna jin kamar suna da ruwa (ya kamata ya zama abu mai ramuka kamar sepiolite), wasu kuma fari ne kuma sun ɗan bushe amma har yanzu suna da wari;
2. Yana da ƙamshi mai zafi sosai;
3. An ƙara wasu launuka, kuma launukan da ake da su a yanzu fari ne, rawaya, launin toka, baƙi, ja, da sauransu.
4. Adadin ƙarin yana da ƙanƙanta sosai, kuma adadin ƙarin tan ɗaya shine 5-12 kg;
5. Ƙarfin farko abin mamaki ne. Simintin ba shi da ƙarfi na tsawon kwana uku, kuma yana iya lalata allon rufin kuma ya manne shi.
6. Ana cewa ana iya amfani da allon XPS ba tare da wakilin haɗin gwiwa ba.
Ta hanyar samfuran da aka samu zuwa yanzu, za a iya kammala da cewa resin ne mai narkewa wanda aka lulluɓe shi da kayan da ba su da ramuka masu sauƙi, amma mai samar da kayayyaki yana son guje wa kalmar "sarrafawa" da gangan, don haka ana kiranta "foda ta roba"
kasawa:
1. Juriyar yanayi na sinadarin narkewar abu ne mai girma. A rana, zai yi rauni cikin ɗan gajeren lokaci. Ko da ba ya cikin rana, haɗin haɗin zai ruɓe da sauri saboda ginin ramin;
2. Juriyar tsufa, sinadarin narkewa ba ya jure zafin jiki, kowa ya san wannan;
3. Tunda tsarin haɗin shine ya narkar da haɗin allon rufin, akasin haka, yana kuma lalata haɗin haɗin. Idan akwai matsala a matakin ƙarshe, tasirin zai yi muni;
4. Babu wani misali na amfani da shi a ƙasashen waje. Tare da ƙwarewar da ta kai a masana'antar sinadarai ta asali a ƙasashen waje, ba zai yiwu a ƙi gano wannan kayan ba.
taƙaitaccen bayani:
Foda mai narkewa na polymer:
1. Samfurin foda mai narkewar latex foda ne mai narkewar ruwa, wanda shine copolymer na ethylene da vinyl acetate, kuma yana amfani da polyvinyl barasa azaman colloid mai kariya.
2. Foda mai narkewar VAE na latex yana da kaddarorin samar da fim, kashi 50% na ruwan da ke cikinsa yana samar da emulsion, kuma yana samar da fim mai kama da filastik bayan an sanya shi a kan gilashi na tsawon awanni 24.
3. Fim ɗin da aka ƙera yana da sassauci da juriya ga ruwa. Zai iya kaiwa ga matsayin ƙasa.
4. Foda mai latex mai sake narkewa yana da babban aiki: yana da ƙarfin haɗuwa mai yawa, aiki na musamman da kuma kyakkyawan aikin hana ruwa shiga, ƙarfin haɗin gwiwa mai kyau, yana ba turmi juriya mai kyau ga alkali, kuma yana iya inganta mannewa da ƙarfin lanƙwasa na turmi. , plasticity, juriyar lalacewa da gini, yana da ƙarfi da sassauci a turmi mai hana fashewa.
Foda mai gutsi:
1. Fodar robar resin sabon nau'in gyara ne na roba, resin, polymer na macromolecular, foda roba da sauran abubuwa.
2. Foda robar resin tana da juriya ga gogewa, rashin narkewar abubuwa, wasu kuma suna jin kamar ba ta da ƙarfi (ya kamata ta kasance mai ramuka kamar sepiolite), da kuma farin foda (amma tana da ƙamshi mai kauri kamar kerosene)).
3. Wasu foda na resin suna lalata allon, kuma hana ruwa shiga ba abu ne mai kyau ba.
4. Juriyar yanayi da juriyar ruwa na foda roba na resin sun yi ƙasa da na foda na latex. Juriyar yanayi babbar matsala ce. A rana, zai yi rauni cikin ɗan gajeren lokaci. Ko da ba ya cikin rana, haɗin haɗin gwiwa ne, Tunda ginin rami ne, zai kuma ruɓe da sauri.
5. Foda robar resin ba ta da sassauci ko kuma sassauci. Dangane da ƙa'idar dubawa ta turmi mai rufi na waje don bangon waje, ƙimar lalata allon polystyrene kawai ta cika ƙa'idar. Sauran alamun ba su kai matsayin da aka saba ba.
6. Ana iya amfani da foda na resin ne kawai don haɗa allon polystyrene, ba don haɗa beads masu haske da allon hana wuta ba.
Lokacin Saƙo: Oktoba-31-2022