Cyanoacrylate adhesive
…inonamira yeindasitiri yecyanoacrylate inoshingirira forklift ye8,1-ton kweawa. Nokudaro, rekodhi yenyika itsva yakagadzwa nokuda kwechitsama chikurusa chakasimudzwa neglue. Munguva yekunyorwa kwerekodhi, motokari yakamiswa kubva kune crane pane cylinder yesimbi ine dhayamita ye 7 cm chete. Scotch Weld? Instant adhesive yepurasitiki uye rabha PR3. Iyo forklift yakasimudzwa neinjiniya Jens Schoene naDr. Markus Schleser weRWTH University Aachen uye akaratidzwa paGerman TV chirongwa Terra Xpress. Mutongi aripo paGuinness World Records akatarisa bvunzo kweawa asati asimbisa zviri pamutemo rekodhi nyowani. Chikwata cheGerman chaifanira kutyora rekodhi yapfuura kuti chibudirire? takakwanisa kumudarika ne100 kg. Nepo rekodhi yenyika itsva ichiratidza kuita kunoshamisa kwechigadzirwa munzvimbo dzakaoma zvakanyanya, maindasitiri ecyanoacrylate adhesive anoshanda zvakaenzana mukugadzira kwemazuva ese uye kushandiswa kwemba. Madonhwe mashomanana anokwana kuwana chisungo chakasimba chesimbi dzakawanda, mapurasitiki uye rubber. Aya anonamatira anokurumidza kuita anosunga mazana ezvisanganiswa zvezvinhu mumasekonzi mashanu kusvika gumi, ne90% yesimba rakazara rinowanikwa mukati meawa. Vhidhiyo kurekodha http://www.youtube.com/watch?v=oWmydudM80c
Cyanoacrylate adhesives ndeye imwechete-chikamu, inokurumidza kuseta methyl, ethyl uye alkoxy based adhesives. Izvo zvakagadzirirwa kubatanidza mapeya akasiyana ezvigadzirwa (rabha, simbi, huni, ceramics, mapurasitiki uye zvinhu zvakaoma kubatanidza, seTeflon, polyolefins). Vane mavara akasiyana here? kubva pazvinwiwa zvitete kusvika kune zvakakora kana kuti jelly-like mass. Iyo inoshandiswa kune madiki madiki madiki, anosvika pakureba kwe0,15 mm. Cyanoacrylate adhesives polymerize nekuda kweiyo catalytic chiito chemumhepo humidity uye inoratidzirwa nechinguva chidiki chekuita. Ndosaka dzimwe nguva vachidaidzwa kunzi mashandisirwo akashandiswa. Kurwisana kwekushisa kwemhando dzakawanda kubva ku55 ° C kusvika + 95 ° C (pamwe nekuwedzera kwekugadzirisa kwakakodzera, simba rinosvika ku +140 ° C rinogona kuwanikwa) Cyanoacrylate adhesives inopa chisungo chakasimba pa: simbi, aluminium, mapurasitiki (semuenzaniso PMMA, ABS, polystyrene, PVC , yakaoma, uye mushure mekushandisa yakakosha primer kunyange yakaoma-ku-bond mapurasitiki akadai se polyethylene - PE uye polypropylene - PP), elastomers (NBR, butyl, EPDM, SBR), dehwe, huni. . Izvi zvinonamira zvinowana simba rekugera here? anenge 7 kusvika 20 N/mm2. Simba rinoenderana nechinhu chinosungirirwa, kukwana kwezvikamu (joint), tembiricha uye rudzi rwekunamatira. Izvo zvisingabatsiri zvezvinamatira izvi dzimwe nguva kunhuhwirira kwakasimba? kunyanya kuoneka pakunyorova kwakaderera. Parizvino, vagadziri vari kuwedzera zvizvarwa zvitsva zvekunamatira izvo zvinokutendera kuti ubatanidze zvinhu zvakaderera-zvinonamatira, zvine mapundu akakura, masisitimu asina kunhuhwirira, uye zvakare haakonzerese kudonha ("utsi") pamajoini ekunamatira. Majoini anopesana nemafuta nemafuta, kusvika zvishoma kune unyoro, kunyanya pakupisa kwakakwirira. Nekudaro, ivo vane nzvimbo yakakosha muindastiri nekuda kwekureruka kwekuuraya uye nekukurumidza kwekuvaka simba mumaoko? kwevashoma, makumi mashoma emasekonzi.
