Eli nqaku likhetha kakhulu i-MMA, i-BA, i-AA njengee-monomers, kwaye lixoxa ngezinto ze-graft polymerization nazo, ezifana nolandelelwano lokudibanisa, ubungakanani bokongeza kunye nobushushu bokusabela kwe-initiator kunye ne-monomer nganye, kwaye lifumanisa iimeko zenkqubo ye-graft polymerization ezilungileyo. Irabha iqala ihlanjwe, emva koko ivuselelwe kwaye ichithwe nge-solvent exutyiweyo kwi-70 ~ 80 ° C, kwaye emva koko i-initiator BPO yongezwa ngamaqela. I-monomer yokuqala i-MMA enyibilikiswe ne-BOP yongezwa kwi-80 ~ 90 ° C imizuzu engama-20, kwaye emva koko yongezwa ne-monomer yesibini ye-BPO, emva kweminye imizuzu engama-20, yongeza i-monomer yesithathu kwi-84 ~ 88 ℃ kwaye uvuselele imizuzu engama-45, ugcine ushushu iiyure eziyi-1.5 ~ 2, emva koko ufumane i-CR/MMA-BA-AA i-graft polymerization adhesive eneendlela ezintathu, Amandla e-Peel makhulu kune-CR/MMA-BA, ixabiso layo yi-6.6 KN.m-1.
Amagama angundoqo: Iglu yeNeoprene, Iglu yeZihlangu, Iglu yeNeoprene egxunyekwe ngamacandelo amaninzi.
I-ether yeseliMCkwayeI-HPMCzisebenza kakuhle ekusasazekeni, zinyibilikisa i-emulsification, zityeba, zinamathela, zenziwe ifilimu, zigcina amanzi, kwaye zikwanokunyibilika kwamanzi okuhle kakhulu, zisebenza ngaphezulu, zizinzile kwaye zinyibilika kwizinyibilikisi zendalo.
Iimveliso eziphambili eziphuhliswe ngoku ziintlobo ze-RT series MC kunye ne-HPMC, ezididi zazo ziyi-50RT (Methylcellulose), 60RT (Hydroxypropylmethylcellulose), 65RT (Hydroxypropylmethylcellulose), 75RT (Hydroxypropylmethylcellulose), ezihambelana namanqanaba e-DOW Chemical Company yiMethocel A, E, F kunye ne-K, ngokwahlukeneyo.
Iimveliso ze-RT series ziluncedo kakhulu kwizixhobo zokwakha ngenxa yokuba zihambelana, zizinzile kwaye zigcina amanzi. Umzekelo, zinokwenziwa zibe “ziintonga zodonga lwe-ceramic kunye nethayile yomgangatho” ezikumgangatho ophezulu, ezaziwa ngokuba yi-rubber powder, eziye zasetyenziswa kwiSitishi sikaloliwe saseBeijing West, isiphumo silungile. Ukongeza, ingasetyenziswa njenge-gelled electrolyte kwi-electrolytic capacitors kunye ne-bonded electrode grids kwizixhobo zombane, njenge-atropine, i-aminopyrine kunye ne-anal crystals kwi-pharmaceuticals, kunye ne-thickener kwi-water emulsions kwi-peyinti. Kwipeyinti ye-latex kunye nepeyinti enyibilikayo emanzini, ingasetyenziswa njenge-arhente yokwenza ifilimu, i-thickener, i-emulsifier kunye ne-stabilizer, njl. kwi-wallpaper adhesion, i-water rewetting rubber powder, njl.
Amagama angundoqo: I-Methyl Cellulose, i-Hydroxy Propyl Cellulose, i-adhesive, ukusetyenziswa.
Uphuhliso lweglue yesandla yeplastiki yephepha esekwe emanzini
Kwiminyaka yakutshanje, kuye kwaveliswa inkqubo entsha yokuncamathisela ifilimu yeplastiki kwizinto eziprintiweyo. Yi-BOPP (ifilimu ye-polypropylene esekwe kabini) egqunywe nge-adhesive ize idityaniswe nezinto eziprintiweyo emva kokuba icinezelwe yi-raber cylinder kunye ne-heating roller ukuze kwenziwe iphepha. / Iplastiki eprintiweyo ye-3-in-1. Oku kubandakanya ingxaki yokubopha iphepha kunye neplastiki. I-BOPP yinto engeyiyo i-polar, ngoko ke, kukho imfuneko ye-adhesive enamathela kakuhle kwizinto ze-polar kunye nezingeyiyo i-polar.
Ukuxuba i-SBS adhesive ne-epoxy resin kuhambelana kakuhle. I-SBS yi-elastomer viscose. Kuyabonakala kwi-failure curve yayo ukuba ukuze kuphuculwe amandla okutshabalalisa i-adhesive ye-viscose, kufuneka ilawulwe kwi-SBS: i-epoxy resin = 2:1. Kwi-peel strength curve, kunokubonwa ukuba xa umlinganiselo uphezulu, amandla e-peel aya kuba makhulu, kodwa i-adhesion nayo iya kwanda. Ukuze kuthintelwe ukunamathela, i-SBS: i-epoxy resin = 1:1~2.5:1 inokulawulwa ukuze kufunyanwe amandla e-peel anyuka kancinci. Ukuqwalasela ngokupheleleyo, misela i-SBS kwi-glue ephambili: i-epoxy resin = 1:1~3.5:1.
Umsebenzi ophambili wokusebenzisa i-resin yokuncamathelisa kukwandisa amandla okubopha kwi-matrix nokuphucula ukufuma kweglu kunye nomphezulu wokuncamathelisa. I-resin yokuncamathelisa esetyenzisiweyo kolu phononongo yi-rosin tackifier eyenziwe yi-rosin eqhelekileyo kunye ne-rosin encitshisiweyo ngobuninzi obahlukeneyo. Ngeemvavanyo ezininzi, kugqitywe kwelokuba ipesenti ye-rosin encitshisiweyo kwi-tackifier yi-22.5%, kwaye amandla okuxobuka kweglue elungiselelwe ngokwale ratio yi-1.59N/25mm (iphepha-iplastiki).
Ubungakanani be-tackifier bunempembelelo ethile kwiimpawu ze-adhesive. Isiphumo esingcono kukuba xa umlinganiselo we-glue ephambili kunye ne-tackifier yi-1:1. Amandla e-peel N/mm iplastiki-iplastiki 1.4, iphepha-iplastiki 1.6.
Kolu phononongo, i-MMA isetyenziswe njengesinyibilikisi ukuxuba i-SBS kunye ne-MMA. Uvavanyo lufumanise ukuba ukusetyenziswa kwe-MMA akunakufezekisa nje injongo yokuxova izinto ezikwi-colloid, kodwa kunokunciphisa i-viscosity kunye nokuphucula amandla okuncamathelisa. Ke ngoko, i-MMA sisinyibilikisi esilungisiweyo esifanelekileyo. Emva kovavanyo, ubungakanani be-MMA esetyenzisiweyo buyi-5% ~ 10% iyonke efanelekileyo.
Ekubeni i-viscose eyenziweyo ifanele ukuba inyibilike emanzini, sikhetha i-latex emhlophe (i-polyvinyl acetate emulsion) njengesixhobo sokuthwala amanzi esinyibilikayo. Ubungakanani be-latex emhlophe bubandakanya i-60% ye-viscose iyonke. Emva kokuba i-viscose esekwe emanzini ixutywe ibe yi-water-emulsion state ngokusasazeka kunye ne-emulsification yesixhobo sokuthwala i-emulsified, ukuba ukuqina kwayo okuxutyiweyo akufanelekanga ukusetyenziswa, inokuxutywa ngamanzi. Le ndlela yokuxuba ibiza kancinci kwaye ayinatyhefu (akukho mfuneko yokusebenzisa izinyibilikisi zendalo), kwaye uluhlu olungcono lwamanzi okuxutywa yi-10% ~ 20%.
Ukuze kususwe intsalela ye-viscose, kuhlolwe ukuba isisombululo se-Na2CO3 esinyibilikisiweyo sisetyenziswa njenge-alkalizing agent, kwaye isiphumo sesona silungileyo. Ithiyori yesiphumo se-alkalizing agent isenokuba kukuba i-saponification reaction ingenisa ezinye ii-ions ezinamandla ze-polar, ezifana nee-ions ze-sodium, ukuze i-rosin acid yokuqala enganyibilikiyo iguqulwe ibe yityuwa ye-soluble sodium. Ukongeza, ukuba isiseko esomeleleyo kakhulu songezwa kwi-glue, amandla okunamathela aya kulahleka, ukuze i-glue ingasebenzi, ukuze i-glue ingafaneleki kwindawo ye-alkaline.
Ukuhamba kwenkqubo okufanelekileyo.
Ixesha leposi: Epreli-25-2024