Ukusetshenziswa kwezinamathiseli ze-epoxy resin

Ingcina ye-resin ye-epoxy(okubizwa ngokuthi i-epoxy adhesive noma i-epoxy adhesive) kwavela cishe ngo-1950, iminyaka engaphezu kwengu-50 kuphela. Kodwa maphakathi nekhulu lama-20, inkolelo-mbono yokunamathela ehlukahlukene, kanye ne-chemistry yokunamathela, i-rheology yokunamathela kanye nendlela yokulimala kokunamathela kanye neminye imisebenzi yocwaningo eyisisekelo iqhubekela phambili ngokujulile, ukuze izakhiwo zokunamathela, izinhlobo kanye nezicelo zenze intuthuko esheshayo. I-Epoxy resin kanye nesistimu yayo yokwelapha ngokusebenza kwayo okuyingqayizivele, okuhle kakhulu kanye ne-epoxy resin entsha, i-ejenti yokwelapha entsha kanye nezithasiselo ziyaqhubeka nokuvela, ziba yiklasi lokunamathela okubalulekile okusebenzayo okuhle kakhulu, izinhlobo eziningi, ukuzivumelanisa nezimo okubanzi.
I-epoxy resin adhesive ngaphezu kwamapulasitiki angewona ama-polar njenge-polyolefin bonding ayilungile, ngoba izinto zensimbi ezahlukahlukene ezifana ne-aluminium, insimbi, insimbi, ithusi: izinto ezingewona ama-metallic ezifana nengilazi, ukhuni, ukhonkolo, njll.: kanye namapulasitiki okushisa njenge-phenolics, ama-amino, i-polyester engagcwalisiwe, njll. anezakhiwo ezinhle kakhulu zokunamathela, ngakho-ke kukhona i-adhesive yendawo yonke eyaziwa ngokuthi. I-epoxy adhesive iyi-adhesive yesakhiwo esisindayo se-epoxy resin.
Ukuhlukaniswa ngezimo zokuphulukisa
Ingcina enamathelayo ebandayo (ayikho ingcina enamathelayo eqinisa ukushisa). Ihlukaniswe futhi ngalezi:

• Ingcina yokwelapha esezingeni eliphansi, izinga lokushisa lokwelapha elingaphansi kuka-15 ℃;
• I-glue yokupholisa izinga lokushisa legumbi, izinga lokushisa lokupholisa lingu-15-40 ℃.
• Ingcina yokushisa. Ingahlukaniswa kabanzi ibe:
• Ingcina yokwelapha enokushisa okuphakathi nendawo, izinga lokushisa lokwelapha cishe lingu-80-120 ℃;
• Ingcina yokwelapha enokushisa okuphezulu, izinga lokushisa lokwelapha elingaphezulu kuka-150 ℃.
• Ezinye izindlela zokunamathela okunamathelayo, njengokunamathela okulula okunamathelayo, ingcina emanzi ebusweni nasemanzini, ingcina enamathelayo enamathelayo efihlakele.

Izinamathiseli ze-Epoxy zinezinzuzo ezilandelayo ngaphezu kwezinye izinhlobo zezinamathiseli:

1. I-resin ye-Epoxyiqukethe amaqembu ahlukahlukene e-polar kanye neqembu le-epoxy elisebenza kakhulu, ngakho-ke linamandla okunamathela aqinile anezinhlobonhlobo zezinto ze-polar ezifana nensimbi, ingilazi, usimende, ukhuni, amapulasitiki, njll., ikakhulukazi lezo ezinomsebenzi ophezulu wobuso, futhi ngesikhathi esifanayo amandla ahlangene ezinto ezilungisiwe ze-epoxy nawo makhulu kakhulu, ngakho-ke amandla alo okunamathela aphezulu kakhulu.
2. Empeleni akukho ukuwohloka okuphansi kwama-molecule okukhiqizwayo lapho i-epoxy resin ilashwa. Ukuncipha kwevolumu yesendlalelo sokunamathela kuncane, cishe ku-1% kuya ku-2%, okungenye yezinhlobo ezinokuncipha okuncane kakhulu kokulashwa kuma-resin e-thermosetting. Ngemva kokufaka i-filler kungancishiswa kube ngaphansi kuka-0.2%. I-coefficient yokwanda okuqondile kwezinto ezilashwayo ze-epoxy nayo incane kakhulu. Ngakho-ke, ukucindezeleka kwangaphakathi kuncane, futhi akunawo umthelela omkhulu emandleni okubopha. Ngaphezu kwalokho, ukugeleza kwezinto ezilashwayo ze-epoxy kuncane, ngakho-ke ukuzinza kobukhulu besendlalelo sokunamathela kuhle.
3. Kunezinhlobo eziningi zama-epoxy resins, ama-curing agents kanye nama-modifiers, angakhiwa ngendlela efanele nangobuciko ukuze kwenziwe i-glue enokusebenza okudingekayo (njengokushesha ukucubungula, ukupholisa izinga lokushisa legumbi, ukupholisa izinga lokushisa eliphansi, ukupholisa emanzini, ukubanda okuphansi, ukubanda okuphezulu, njll.), kanye nokusetshenziswa kokusebenza okudingekayo (njengokumelana nokushisa okuphezulu, izinga lokushisa eliphansi, amandla aphezulu, ukuguquguquka okuphezulu, ukumelana nokuguga, ukuqondisa kagesi, ukuqondisa kwamagnetic, ukuqondisa ukushisa, njll.).
4. Ngezinhlobonhlobo zezinto eziphilayo (i-monomer, i-resin, irabha) nezinto ezingaphili (ezifana nama-filler, njll.), zinokuhambisana okuhle kanye nokusebenza kahle, kulula ukwenza i-copolymerization, ukuxhumanisa, ukuxuba, ukugcwalisa kanye nezinye izinguquko ukuthuthukisa ukusebenza kwesendlalelo se-glue.
5. Ukumelana okuhle nokugqwala kanye nezakhiwo ze-dielectric. Imelana ne-asidi, i-alkali, usawoti, izinyibilikisi kanye nokunye ukugqwala kwemidiya. Ukumelana nomthamo 1013-1016Ω-cm, amandla e-dielectric 16-35kV/mm.
6. Ama-resin epoxy asetshenziswa kabanzi, ama-ejenti okwelapha kanye nezithasiselo zinemvelaphi eminingi, ukukhiqizwa okukhulu, kulula ukwakha, kungaba ukubumba kokucindezela kokuthintana, kungasetshenziswa ngezinga elikhulu.

Indlela yokukhethai-epoxy resin

Uma ukhetha i-resin ye-epoxy, kunezici eziningi okufanele uzicabangele, okuhlanganisa:

1. Ukusetshenziswa: Ingabe i-epoxy ingasetshenziswa ngenhloso evamile noma ukusetshenziswa kwezimboni okwengeziwe?
2. Isikhathi sokusebenza: Kuzodinga isikhathi esingakanani i-epoxy ngaphambi kokulungiswa?
3. Isikhathi Sokwelapha: Kuzothatha isikhathi esingakanani ukuthi umkhiqizo uphulukiswe futhi uphulukiswe ngokuphelele kusetshenziswa i-epoxy?
4. Izinga lokushisa: Ingxenye izosebenza ngaliphi izinga lokushisa? Uma isici sifunwa, ingabe i-epoxy ekhethiwe ihlolwe amazinga okushisa aphezulu?

Izici:

• Izakhiwo eziphezulu ze-thixotropic, zingasetshenziswa ekwakhiweni kwe-façade.
• Izici zokuphepha okuphezulu kwemvelo (uhlelo lokupholisa olungenazo izinyibilikisi).
• Ukuguquguquka okuphezulu.
• Amandla aphezulu okubopha.
• Ukushisa okuphezulu kukagesi.
• Izakhiwo ezinhle kakhulu zemishini.
• Ukumelana okuhle kakhulu nokushisa namanzi.
• Ukuqina okuhle kakhulu kwesitoreji, isikhathi sokugcina esifika onyakeni owodwa.

Isicelo:Ukubopha izinsimbi ezahlukahlukene nezingezona izinsimbi, njengezibuthe, ama-aluminium alloys, izinzwa, njll.