Indlela chaza resin epoxy? Ukusebenza epoxy resin

Igama elithi "epoxy" is cishe wonke umuntu ezaziwayo. Kodwa resin epoxy, okuyinto isicelo kuvamile impela namuhla, uhlobo zokwenziwa resin. Yavela 50s. ikhulu leminyaka eledlule kuze ngokushesha yatha- sibonga izakhiwo zalo ezihlukahlukene.

Namuhla, epoxy inhlaka asetshenziswa ukukhiqizwa yezimboni nendlu. izicelo kunokwenzeka babizwa sanda ngenxa ukuthuthukiswa ukwakhiwa ezinezici ngcono.

incazelo Epoxy

Ngokusho ukwakheka kwamakhemikhali epoxy resin - zokwenziwa kwakwakhe oligomeric. Lezi izinto bayindlala cishe yonke imikhakha umkhakha. I khulula ifomu epoxy isetshenziswa, kodwa ihambisana ejenti sokwelapha ke engaveza izakhiwo eliyingqayizivele ngemva polymerization ukuphendula. Uma ejenti epoxy resin sokwelapha ukuxhuma nge, kungase kwenzeke:

• kanzima, izinto eziqinile;
• imikhiqizo Soft futhi iqine;
• izinto iraba-like.

Epoxy inhlaka amelana izinto ezilandelayo:

• halogens;
• acid;
• alkalis.

Nokho, nokonakala kwenzeka esters futhi acetone ngaphandle ifilimu kumiswa. Ngemva elapha epoxy resin Ukwakheka akusho bungakhiphi volatiles yayo kanye ukuncipha azinakwa.

epoxy Ikakhulukazi resin zizalela

Uma uyazibuza mayelana nendlela ukuncibilikisa epoxy, kufanele wazi ukuthi ukuntuleka noma ngokweqile elapha ejenti e ukwakheka ezingapheli zingayilimaza ikhwalithi polymer, kodwa ngesikhathi esifanayo amelana ukushisa, kodwa amandla alo kuyehla, ikhono simelane amakhemikhali namanzi zigcinwa . Uma hardener yengezwe ngo lemali enganele, isihloko kungenzeka okunamathelayo ngenxa resin olukhululekile.

Ngaphambi alulaze resin epoxy, kubalulekile ukuqonda ukuthi ngokweqile hardener khulula ikhishwe ngaphezulu polymer ngesikhatsi kokuhlinzwa. Ukuze compounds ezahlukene ingxenye iyelapheka ne resin asetshenziswa ngezabelo ezahlukene, lokhu kungatholakala kuleli bhukwana. Uma kuziwa compounds yesimanje, isilinganiso yiyona ngokuvamile kakhulu kanje: 1 2 noma 1: 1.

Izincomo ezifanelekayo ukufuya epoxy resin

Kuze kube manje, kunenkolelo yokuthi uma usebenzisa hardener emqulwini ezingaphezu kuka kuyinsakavukela yokusabela polymerization kwenzeka ngokushesha. Lokhu umcabango angabhekwa edukisayo. Indlela elula kusheshiswe umsebenzi ukwandisa izinga lokushisa ingxube yokusabela.

Uma ufuna ukusheshisa izikhathi inqubo ezintathu, izinga lokushisa kufanele senyukela 10 ° C. Uma uphakamisa umbuzo kanjani ukuncibilikisa epoxy, kufanele wazi ukuthi thina namuhla okukhethekile compounds, okuyinto izingoma aqukethe accelerators sokwelapha ezaziwayo. Kungatholakala kubhalwe ku ukudayiswa, futhi epoxy izakhi yokuzigxilisa ashisa ongaphakeme. Thayipha elapha ejenti kanye nezinga lokushisa elizosetshenziswa kule isenzo ingxube njengoba eziyinhloko ezithinta izinga polymerization.

Stud epoxy resin: aqanjwe ezahlukene polymerization lokushisa

Resin epoxy kungase ingelapheka ezingeni lokushisa ezisukela -10 kuya +200 ° C, ke kuzoncika ezihlukahlukene ezisetshenziswa kwengoma. Kuze kube manje, eyaziwa inhlaka for sokwelapha ashisayo nabandayo. Cold uhlobo hardener kanye epoxy resin evamise esetshenziswa ekuphileni kwansuku zonke. Ukuze kuhlangatshezwane laqanjwa enjalo kungaba izimo ukwakhiwa kanye namandla ongaphakeme, futhi lapho ukwelashwa ukushisa akwamukeleki.

Ukuze uthole imikhiqizo okusezingeni eliphezulu amandla ukuze nikwazi ukusikhuthazelela imithwalo okusezingeni eliphezulu okushisa, kanye nokuchayeka kumakhemikhali, asetshenziselwa ashisayo sokwelapha uhlobo ingxenye. obukhulu anezikhala zinhlayiya zakha ngesikhathi polymerization ashisayo. Futhi, kukhona izingoma futhi oxides yabo ekwazi polymerize emanzini olwandle futhi ezimweni ezinomswakama.

sphere kwesicelo

Epoxy izinto basakaza namuhla emhlabeni wonke, baziwa kusukela maphakathi nekhulu leminyaka eledlule. Ubunjalo ukusetshenziswa kwalezi izinto eminyakeni yamuva uye washintsha abalulekile, kodwa ukusetshenziswa kuyinto bendabuko ezindaweni eziningana, phakathi kwabo:

• elifakwe ingilazi fibre namabhodlela fibre;
• enamathela ukuze ungangenisi amanzi;
• ukudalwa ezinengilazi chemical ukumelana;
• ukukhiqizwa esobala impahla esiqinile imikhiqizo-fiberglass.

Epoxy resin, ukusetshenziswa okuyinto evamile, ungakwazi ejenti bakhulelisa ngoba izingxenye kunenze nisondelane esikhathini kagesi, yezimoto, zezindiza Amasimu, electronics kanye nezimboni. Kulokhu, lo wokuqamba asetshenziswe ekukhiqizeni fiberglass e isiqoqi sama-softwe kanye shipbuilding, ukwakhiwa, izimo ukulungisa workshop izici imoto umzimba futhi isikebhe hulls.

Ukusebenza epoxy resin Kwenziwa lapho kukhona isidingo uphawu izindonga izibuya ezindlini namachibi. Sebenzisa singenziwa ka epoxy resin izinto nopende ngokokuhlobisa yangaphandle futhi ingaphakathi izakhiwo, kanye impregnation, ezizohlinzeka nokuvikela izinto ukungena nakwamanye amazwe futhi amandla labo sekuvamile, kufanele zabelwe phakathi kwemithi nokhonkolo.

serekhodi

Resin epoxy kungase yisisekelo impahla esobala okuqinile, okuyinto eyenziwa ekubunjweni efolomeni. Ngo esigabeni esilandelayo umkhiqizo kusetshenzwe by indlela mechanical, njenge: ukugaya nokuhlanganisa ahlabayo. Isetshenziselwa imikhiqizo fiberglass emisebenzini design, electronics umkhakha, ukwakhiwa nendlu.

Ukusebenza ne epoxy: ukulungiselela ebusweni

Ukusebenza ne epoxy kuhilela isidingo ebusweni ukulungiselela ngaphambi isicelo kokuqanjiwe. Kungaleso sikhathi kuphela lapho uzokwazi ukufeza adhesion okusezingeni eliphezulu. Ngakho-ke, ngaphambi ukuncibilikisa resin epoxy, kuqala ukulungiselela ebusweni. Ukuze uqale degreasing isizinda. Uma uyikha phezulu le akufanele iminonjana uwoyela amafutha. Kwamanzi bahlanza usebenzisa kuphela noma yokuwasha ngempumelelo. Kubalulekile ukuqinisekisa ukungabi khona isicwebezelisi.

Isendlalelo engenhla isuswe ngu ukugaywa. evele Small kufanele uzilungiselele ngesandla, sebenzisa lokukhuhla ukuba lokhu. Lingabekela base endaweni iphathwe ukugaya ngomshini, nothuli kwaphumela kumele zisuswe nge-vacuum cleaner. Lapho yokukhiqiza fiberglass noma layering epoxy self-yokululama phansi, varnishes futhi linikeza enamathela ngamunye okwalandela kufanele usetshenziswe hhayi eqina ngokugcwele, namanje okunamathelayo ungqimba odlule.

Uma ubuchwepheshe kanye nezidingo ukuba kokuqendwa umkhiqizo imvume, ungqimba engezansi, okuyinto uba substrate, kumele kube ingxenye encane wafafaza isihlabathi. Ngemva kokuphulukisa isihlabathi ngokweqile uzodinga ukususa futhi sisebenzise ungqimba entsha epoxy.

Lungiselela semali resin epoxy

Uma ungazi izakhiwo ezithile resin epoxy, ungabese uhlangabezana nezinkinga enkulu ekwakhekeni izinto ngobuningi. Njengoba kwanda ivolumu epoxy, semali ukushisa. Abilayo resin Foam ngeke naba buthuntu emhlophe. Lokhu Ukwakheka ayikwazi kubhekwe ezifanele ukusetshenziswa. diluents futhi anamandla angase engezwe ukunciphisa viscosity ukuze resin. Ngisho lokuhlala oluncane zinciphisa amandla futhi ukushisa ukumelana umkhiqizo. Umphumela uba exudation ka diluent kusukela polymer, okuholela nokucekelwa phansi impahla.

Epoxy inhlaka ejenti sokwelapha musa zinamanzi. Uma lokhu kwenzeka, khona-ke ukwakheka iba turbid futhi ilahlekelwa impahla yayo. Namuhla kukhishwa ezitholakala emanzini epoxy. izingoma ezinjalo ezifuywa ngamanzi distilled ukufeza ukuhlakazwa. Epoxy resin kufanele elixutshwe plasticizer. Ingxube wafakwa kancane kusifudumeza kuyiqiniso uma usebenzisa DBP. Ekusebenziseni DEG-1 sokuqamba kufanele elixutshwe.

Ukuze kuhlangana olunzulu okufanele isetshenziswe sokuprakthiza ukwakhiwa ekhethekile umlomo wombhobho noma mixer. Olinganise resin kanye plasticizer akhethiwe kuncike ductility iyadingeka, kepha avame inani plasticizer zokhahlamba kusuka 5 kuya ku-10%. Ingxube ingezwe hardener. Resin is selehlile +30 ° C, ukuvimbela abilayo. Ingxenye emgomeni resin ne hardener selivela 1 kuya ku 10. sifinyelele iyunifomu nokonakala hardener kumele baqinisekise ukuxuba. Kungenjalo, ukwakheka ngeke heterogeneous, futhi kamuva ngeke ujuluke.

resin yezandla

Kaningi amakhosi usebenze izihloko ezivela epoxy inhlaka. Le misebenzi ahambisana nobunzima ezithile. Umkhiqizo kufanele abe therein esobala akufanele Bubbles emoyeni. I mkhulu futhi elapha ebusweni kufanele zifane. Uma ukushuba iphelile 2 mm, indaba sisetshenziswa emva izingqimba eyinhloko polymerization. Resin kungenziwa batheleka amafomu. Ukuze umkhiqizo wahlukaniswa ifomu ezigcotshwe nge ongahluziwe jelly noma amafutha.

Dye ngoba epoxy resin izokwenza umbala umkhiqizo. Ngemva kokuphothulwa umkhiqizo inakekelwa ezingeni lokushisa kancane ngenhla ekamelweni lokushisa. Ngemva 3 chasa iza polymerization eyinhloko sokwelapha ngaphambi lamabutho, nangemva kokuba umkhiqizo kufanele sekuqala ukufudumala kunonophisa luhlelo sokwelapha amahora 6. Uma unquma ukwenza yezandla ezenziwe epoxy resin-ke, kungase kungabi bakwazi ukusebenzisa Ekhabetheni kuhhavini ekhethekile.

Ezingeni lokushisa elilingana lo polymerization izothatha 2 amaviki. Uma izithako added triethylenetetramine, ebusweni angahlala okunamathelayo. umkhiqizo Sakaza esikhathini esizayo kumele machined. Epoxy resin production ezifuywayo akuyona njengoba kufanelekile thusi imikhiqizo okukhulu, ngoba uhlukile sokwelapha ukujiya engalingani.

Ukwenza umbala epoxy resin

Penda ngoba epoxy resin sizonikeza ikhaya Ukwakheka, ababethi umbala othize. Ukuze uqinisekise sokusabalalisa umfaniswano abakhiqizi sombala zisebenzisa amashumi surfactants. Lesikhumba kunganciphisa obala resin, ngezinye izikhathi lishintsha umbala, iphimbo amnyama. Ukungeza sombala ukuze ekwandeni kumele kwenziwe kodwa emva kwalokho wax.

izici Technical we epoxy resin yokwakheka Isibonelo uphawu ED-20

Epoxy resin, izimfanelo okuzokwenziwa ezibalwe ngezansi, limelela uketshezi uju-like aphuzi okuyinto ezinemibala kalula. Ubuningi at 20 ° C ambient umkhawulo 1,16-1,25 kg / m ^3. amandla eqine kuyinto 40-90 MPA. amandla Flexural okulingana 80-140 MPA. amandla compressive kuyinto 100-200 MPA.

Amazinga polymerization 20 ° C nangaphezulu. Uma unesithakazelo resin epoxy, wacondza ingxube lapho kuhlangene hardener kufanele babe nesithakazelo. Lesi sakamuva kumele lisetshenziswe inani izingxenye 7, kuyilapho resin yengezwe ngo isamba 1 okuyingxenye. Isikhathi polymerization 1.5 amahora kwengoma. Amanzi ukumuncwa ngemva kwamahora angu-24 ilingana kumkhawulo 0.01-0.1%. Heat ukumelana zokhahlamba kusuka 55 kuya 170 ° C. amandla Impact kuyinto 5-25 kJ / m ^2.

izakhiwo letibalulekile epoxy resin

Ngaphambi kokuthi ukubhekana umbuzo lapho ukuthenga epoxy, kufanele wazi izakhiwo zalo eziyisisekelo. Phakathi kwezinye kufanele ukwaba ukumelana ongaphakeme ukuba ngokuhlaziya, kanye ubuthi eningi kakhudlwana njengoba kuqhathaniswa ne acrylic inhlaka. I izakhiwo resin epoxy abonisa ukuthi ukwakheka has a viscosity okusezingeni eliphezulu, kufanele isetshenziswa ngesikhathi esifanayo ne yokususa ingcekeza elenkani. ingxube kungenzeka evuthayo, noma engeza kuphela ukwehlisa viscosity resin. Kuzo zombili lezi zimo, resin iyoba uketshezi xaxa. Kungasetjenziswa by shayela noma roller, ngokushesha impregnate fiberglass futhi kuphundlukele ukungena nakwamanye amazwe ezifana izinkuni.

isiphetho

Kaningi, abathengi uyazibuza mayelana lapho ukuthenga resin epoxy. Namuhla, le nto inikeza ezihlukahlukene izinkampani, phakathi kokunye, kufanele kwenziwe esitolo esiyinhlanganisela "Carbo" esemgwaqweni eMoscow Volgograd lemininingwane, 42.