An shirya sabon nau'in mannen polyurethane ta amfani da ƙananan ƙwayoyin polyacids da ƙananan ƙwayoyin ƙwayoyin cuta a matsayin kayan albarkatun ƙasa don shirya prepolymers. A lokacin tsarin tsawaita sarkar, an gabatar da polymers hyperbranched da HDI trimers a cikin tsarin polyurethane. Sakamakon gwajin ya nuna cewa manne da aka shirya a cikin wannan binciken yana da danko mai dacewa, tsawon rayuwar diski mai mannewa, ana iya warkewa da sauri a yanayin zafin jiki, kuma yana da kyawawan abubuwan haɗin gwiwa, ƙarfin rufewar zafi da kwanciyar hankali na thermal.

Marufi masu sassauƙa masu sassauƙa suna da fa'idodin kyawun bayyanar, kewayon aikace-aikacen fa'ida, jigilar kayayyaki, da ƙarancin marufi. Tun da aka gabatar da shi, an yi amfani da shi sosai a abinci, magunguna, sinadarai na yau da kullun, kayan lantarki da sauran masana'antu, kuma masu amfani da su suna matukar sonsa. Ayyukan gyare-gyaren marufi masu sassauƙa ba kawai suna da alaƙa da kayan fim ba, amma kuma ya dogara da aikin manne mai haɗawa. Polyurethane adhesive yana da fa'idodi da yawa kamar ƙarfin haɗin gwiwa mai ƙarfi, daidaitawa mai ƙarfi, da tsabta da aminci. A halin yanzu shine babban abin da ke tallafawa manne don haɗakar da marufi masu sassauƙa da kuma mayar da hankali kan bincike ta manyan masana'antun manne.

Tsufa mai zafi shine tsari mai mahimmanci a cikin shirye-shiryen marufi masu sassauƙa. Tare da manufofin manufofin kasa na "kololuwar carbon" da "kayan aikin carbon", kare muhalli na kore, rage yawan iskar carbon, da inganci da ceton makamashi sun zama burin ci gaba na kowane bangare na rayuwa. Yawan zafin jiki da kuma lokacin tsufa suna da tasiri mai kyau akan ƙarfin kwasfa na fim ɗin da aka haɗa. A ka'ida, mafi girma da zafin jiki na tsufa da kuma tsawon lokacin tsufa, mafi girman ƙimar kammala amsawa kuma mafi kyawun tasirin warkewa. A cikin ainihin tsarin aikace-aikacen samarwa, idan za'a iya rage yawan zafin jiki na tsufa kuma za'a iya rage lokacin tsufa, zai fi kyau kada a buƙaci tsufa, kuma za'a iya yin slitting da jaka bayan an kashe na'ura. Wannan ba wai kawai zai iya cimma burin kare muhallin kore da rage yawan iskar carbon ba, har ma yana adana farashin samarwa da inganta ingantaccen samarwa.

Wannan binciken an yi niyya don haɗa wani sabon nau'in manne polyurethane wanda ke da ɗanko mai dacewa da rayuwar diski a lokacin samarwa da amfani, zai iya warkewa da sauri a ƙarƙashin yanayin ƙarancin zafin jiki, zai fi dacewa ba tare da babban zafin jiki ba, kuma baya shafar aikin alamun daban-daban na marufi masu sassauƙa.

1.1 Abubuwan gwaji Adipic acid, sebacic acid, ethylene glycol, neopentyl glycol, diethylene glycol, TDI, HDI trimer, dakin gwaje-gwaje da aka yi hyperbranched polymer, ethyl acetate, polyethylene film (PE), polyester film (PET), aluminum tsare (AL).
1.2 Gwaji kayan aiki Desktop lantarki akai-akai zafin jiki bushe tanda: DHG-9203A, Shanghai Yiheng Scientific Instrument Co., Ltd .; Viscometer na jujjuyawa: NDJ-79, Shanghai Renhe Keyi Co., Ltd.; Na'ura mai gwadawa ta duniya: XLW, Labthink; Thermogravimetric analyzer: TG209, NETZSCH, Jamus; Gwajin hatimin zafi: SKZ1017A, Jinan Qingqiang Electromechanical Co., Ltd.
1.3 Hanyar hadawa
1) Shiri prepolymer: a bushe flask mai wuya hudu sosai sannan a saka N2 a ciki, sannan a zuba karamin molecule polyol da polyacid a cikin flask mai wuya hudu a fara motsawa. Lokacin da zafin jiki ya kai yanayin da aka saita kuma fitowar ruwa yana kusa da fitowar ruwa na ka'idar, ɗauki takamaiman adadin samfurin gwajin ƙimar acid. Lokacin da darajar acid ta kasance ≤20 mg / g, fara mataki na gaba na amsawa; ƙara 100 × 10-6 metered mai kara kuzari, haɗa bututun wutsiya mai wutsiya kuma fara fam ɗin injin, sarrafa ƙimar fitarwar barasa ta hanyar injin injin, lokacin da ainihin abin da aka fitar na barasa yana kusa da fitowar barasa na ka'idar, ɗauki wani samfuri don gwajin ƙimar hydroxyl, kuma ƙare amsawa lokacin da ƙimar hydroxyl ta cika buƙatun ƙira. An shirya abin da aka samu polyurethane prepolymer don amfanin jiran aiki.
2) Shiri na polyurethane adhesive mai ƙarfi: Ƙara ma'auni polyurethane prepolymer da ethyl ester a cikin flask mai wuya huɗu, zafi da motsawa don tarwatsa daidai, sa'an nan kuma ƙara TDI mai aunawa a cikin flask mai wuyansa hudu, ci gaba da dumi don 1.0 h, sa'an nan kuma ƙara na gida hyperbranched polymer a cikin dakin gwaje-gwaje, a hankali 2 HD . Flask mai wuyan hannu hudu, ci gaba da dumi don 2.0 h, ɗauki samfurori don gwada abun ciki na NCO, kwantar da hankali kuma saki kayan don marufi bayan abun ciki na NCO ya cancanta.
3) Dry lamination: Mix ethyl acetate, babban wakili da wakili na warkewa a cikin wani nau'i mai mahimmanci kuma a motsa shi daidai, sannan a shafa da shirya samfurori akan busassun laminating na'ura.

1.4 Halayen Gwaji
1) Danko: Yi amfani da viscometer na juyawa kuma koma zuwa GB/T 2794-1995 Hanyar gwaji don danko na adhesives;
2) Ƙarfin T-peel: an gwada ta amfani da na'ura mai gwadawa na duniya, yana nufin hanyar gwajin ƙarfin kwasfa na GB / T 8808-1998;
3) Ƙarfin hatimin zafi: da farko amfani da gwajin hatimin zafi don yin hatimin zafi, sannan yi amfani da na'urar gwaji ta duniya don gwadawa, koma GB/T 22638.7-2016 Hanyar gwajin ƙarfin zafi;
4) Thermogravimetric analysis (TGA): An gudanar da gwajin ta hanyar amfani da na'urar nazari na thermogravimetric tare da adadin dumama na 10 ℃ / min da gwajin zafin jiki na 50 zuwa 600 ℃.

2.1 Canje-canje a cikin danko tare da lokacin haɗuwa da haɗuwa da danko na manne da rayuwar faifan roba sune mahimman alamomi a cikin tsarin samar da samfur. Idan danko na manne ya yi yawa, adadin manne da aka yi amfani da shi zai yi girma sosai, yana shafar bayyanar da farashin sutura na fim ɗin da aka haɗa; idan danko ya yi ƙasa sosai, adadin manne da aka yi amfani da shi zai yi ƙasa da ƙasa, kuma ba za a iya shigar da tawada yadda ya kamata ba, wanda kuma zai shafi bayyanar da haɗin gwiwar fim ɗin. Idan rayuwar diski na roba ya yi tsayi da yawa, dankon manne da aka adana a cikin tankin manne zai karu da sauri, kuma ba za a iya amfani da manne da kyau ba, kuma abin nadi na roba ba shi da sauƙin tsaftacewa; idan rayuwar faifan roba ya yi tsayi da yawa, zai shafi bayyanar mannewa na farko da aikin haɗin gwiwa na kayan haɗin gwiwa, har ma yana shafar ƙimar warkewa, ta haka yana shafar haɓakar samar da samfur.

Kulawar danko mai dacewa da rayuwar diski mai mannewa sune mahimman sigogi don amfani mai kyau na adhesives. Dangane da ƙwarewar samarwa, babban wakili, ethyl acetate da wakili na warkewa an daidaita su zuwa ƙimar R da ta dace da danko, kuma ana mirgina manne a cikin tankin manne tare da abin nadi na roba ba tare da yin amfani da manne ga fim ɗin ba. Ana ɗaukar samfuran mannewa a lokuta daban-daban don gwajin danko. Danko da ya dace, rayuwar da ta dace na faifan mannewa, da saurin warkewa a ƙarƙashin yanayin ƙarancin zafin jiki sune maƙasudai masu mahimmanci waɗanda mannen polyurethane na tushen ƙarfi ke bi yayin samarwa da amfani.

2.2 Tasirin zafin jiki na tsufa akan ƙarfin kwasfa Tsarin tsufa shine mafi mahimmanci, cin lokaci, ƙarfin makamashi da tsarin sararin samaniya don marufi mai sassauƙa. Ba wai kawai yana rinjayar ƙimar samar da samfurin ba, amma mafi mahimmanci, yana rinjayar bayyanar da aikin haɗin gwiwa na marufi masu sassauƙa. Fuskanci da manufofin gwamnati na "carbon kololuwa" da "carbon neutrality" da kuma m kasuwa gasa, low-zazzabi tsufa da sauri warkewa hanyoyi ne masu tasiri don cimma ƙarancin amfani da makamashi, samar da kore da samar da ingantaccen aiki.

Fim ɗin haɗin PET/AL/PE ya tsufa a ɗaki da zafin jiki kuma a 40, 50, da 60 ℃. A dakin da zafin jiki, ƙarfin kwasfa na ciki Layer AL/PE tsarin hade ya kasance barga bayan tsufa na 12 h, kuma an gama warkewar asali; a dakin da zafin jiki, ƙarfin kwasfa na babban Layer PET / AL babban shinge mai haɗakarwa ya kasance tabbatacce bayan tsufa na tsawon sa'o'i 12, yana nuna cewa babban fim ɗin fim ɗin zai shafi warkar da manne polyurethane; Idan aka kwatanta yanayin zafin jiki na 40, 50, da 60 ℃, babu wani bambanci a fili a cikin ƙimar warkewa.

Idan aka kwatanta da na yau da kullun na tushen ƙarfi na polyurethane a cikin kasuwa na yanzu, lokacin yawan zafin jiki gabaɗaya shine awanni 48 ko ma ya fi tsayi. Adhesive na polyurethane a cikin wannan binciken na iya kammala aikin gyara babban shinge a cikin sa'o'i 12 a zafin jiki. Manne da aka haɓaka yana da aikin saurin warkewa. Gabatarwar na gida hyperbranched polymers da multifunctional isocyanates a cikin m, ba tare da la'akari da waje Layer hada tsarin ko na ciki Layer hadaddun tsarin, da kwasfa ƙarfi a karkashin dakin zafin jiki yanayi ne ba da yawa daban-daban daga kwasfa ƙarfi a karkashin high-zazzabi tsufa yanayi, yana nuna cewa ci gaban m ba kawai yana da aikin da sauri curing aiki, amma kuma yana da sauri curing.

2.3 Sakamakon tsufa zafin jiki a kan zafi hatimi ƙarfi The zafi hatimin halaye na kayan da kuma ainihin zafi hatimin sakamako suna shafar da yawa dalilai, kamar zafi hatimi kayan aiki, jiki da kuma sinadaran yi sigogi na kayan da kanta, zafi hatimin lokaci, zafi hatimin matsa lamba da zafi hatimin zazzabi, da dai sauransu bisa ga ainihin bukatun da kwarewa, wani m zafi hatimin tsari da sigogi an gyarawa, da zafi hatimin ƙarfin gwajin na hadaddun fim bayan compounding ne da za'ayi.

Lokacin da fim ɗin da aka haɗa ya kasance kusa da injin, ƙarfin hatimin zafi yana da ɗan ƙaramin ƙarfi, kawai 17 N / (15 mm). A wannan lokacin, manne ya fara ƙarfafawa kuma ba zai iya samar da isassun ƙarfin haɗin gwiwa ba. Ƙarfin da aka gwada a wannan lokacin shine ƙarfin hatimin zafi na fim din PE; yayin da lokacin tsufa ya karu, ƙarfin hatimin zafi yana ƙaruwa sosai. Ƙarfin hatimin zafi bayan tsufa na tsawon sa'o'i 12 daidai yake da wanda bayan sa'o'i 24 da 48, yana nuna cewa an kammala maganin a cikin sa'o'i 12, yana ba da isasshen haɗin gwiwa don fina-finai daban-daban, wanda ke haifar da haɓaka ƙarfin hatimin zafi. Daga canjin yanayin ƙarfin hatimin zafi a yanayin zafi daban-daban, ana iya ganin cewa a ƙarƙashin yanayin lokacin tsufa iri ɗaya, babu bambanci sosai a ƙarfin hatimin zafi tsakanin yanayin zafin ɗakin da kuma yanayin 40, 50, da 60 ℃. Tsufa a dakin da zafin jiki na iya samun cikakkiyar sakamako na tsufa mai zafi. Tsarin marufi mai sassauƙa wanda aka haɗa tare da wannan haɓakar mannewa yana da ƙarfin hatimin zafi mai kyau a ƙarƙashin yanayin tsufa na zafin jiki.

2.4 Zaman lafiyar zafin jiki na fim ɗin da aka warkar yayin amfani da marufi masu sassauƙa, ana buƙatar rufewar zafi da yin jaka. Bugu da ƙari, kwanciyar hankali na thermal na kayan fim ɗin kanta, kwanciyar hankali na thermal na fim ɗin polyurethane da aka warke yana ƙayyade aikin da bayyanar da samfurin marufi mai sassauƙa. Wannan binciken yana amfani da hanyar nazarin zafin jiki na thermal gravimetric (TGA) don nazarin yanayin kwanciyar hankali na fim ɗin polyurethane da aka warke.

Fim ɗin polyurethane da aka warke yana da ƙarancin asarar nauyi biyu a bayyane a zazzabi na gwaji, wanda ya dace da bazuwar thermal na ɓangaren wuya da sassa mai laushi. Matsakaicin lalatawar thermal na sashin mai laushi yana da inganci, kuma asarar nauyi mai zafi ya fara faruwa a 264 ° C. A wannan zafin jiki, zai iya saduwa da buƙatun zafin jiki na tsarin marufi mai laushi na yanzu, kuma zai iya saduwa da buƙatun zafin jiki na samar da marufi na atomatik ko cikawa, jigilar kaya mai nisa, da tsarin amfani; zafin bazuwar thermal na ɓangaren wuya ya fi girma, ya kai 347 ° C. Haɓaka babban zafin jiki na warkewa mara amfani yana da kwanciyar hankali mai kyau. Cakudar kwalta AC-13 tare da slag karfe ya karu da 2.1%.

3) Lokacin da abun ciki na slag karfe ya kai 100%, wato, lokacin da girman barbashi guda ɗaya na 4.75 zuwa 9.5 mm gaba ɗaya ya maye gurbin farar ƙasa, ƙimar kwanciyar hankali na cakuda kwalta shine 85.6%, wanda shine 0.5% sama da na AC-13 cakuda kwalta ba tare da karfe ba; da tsaga ƙarfi rabo ne 80.8%, wanda shi ne 0.5% mafi girma fiye da na AC-13 kwalta cakuda ba tare da karfe slag. Bugu da kari na dace adadin karfe slag iya yadda ya kamata inganta saura kwanciyar hankali da tsaga ƙarfi rabo AC-13 karfe slag kwalta cakuda, kuma zai iya yadda ya kamata inganta ruwa kwanciyar hankali na kwalta cakuda.

1) A ƙarƙashin yanayin amfani na yau da kullun, danko na farko na manne polyurethane mai ƙarfi wanda aka shirya ta hanyar gabatar da polymers hyperbranched na gida da polyisocyanates multifunctional yana kusa da 1500mPa·s, wanda ke da ɗanko mai kyau; rayuwar diski mai mannewa ya kai min 60, wanda zai iya cika cikakkun buƙatun lokacin aiki na kamfanoni masu sassaucin ra'ayi a cikin tsarin samarwa.

2) Ana iya gani daga ƙarfin kwasfa da ƙarfin hatimin zafi cewa mannen da aka shirya zai iya warkewa da sauri a cikin zafin jiki. Babu wani babban bambanci a cikin saurin curing a dakin da zafin jiki kuma a 40, 50, da 60 ℃, kuma babu wani babban bambanci a cikin ƙarfin haɗin gwiwa. Wannan mannen za a iya warke gaba ɗaya ba tare da zafin jiki ba kuma yana iya warkewa da sauri.

3) Binciken TGA ya nuna cewa manne yana da kyakkyawar kwanciyar hankali na thermal kuma yana iya saduwa da bukatun zafin jiki yayin samarwa, sufuri da amfani.