Imodi yokuxhumanisa yepayipi lomlilo: intambo, umsele, i-flange, njll. Ipayipi lensimbi elihlanganisiwe langaphakathi nelangaphandle le-epoxy lokuvikela umlilo liyimpuphu ye-epoxy resin eguquliwe enamandla amakhulu yokulwa nokugqwala, enokumelana okuhle kakhulu nokugqwala kwamakhemikhali. Ngokuyisisekelo ixazulula izinkinga eziningi njengokugqwala kokugqwala komhlaba kanye nokulinganiswa kodonga lwangaphakathi lwemikhiqizo efanayo ngemva kokusetshenziswa isikhathi eside, ukuze kugwenywe ukuvinjelwa kwangaphakathi okuthinta ukusetshenziswa, ukuze kuthuthukiswe kakhulu impilo yesevisi yamapayipi akhethekile okulwa nomlilo. Ngenxa yokwengezwa kwezinto ezivimbela umlilo ezintweni zokumboza, ukumelana nokushisa komkhiqizo kuyathuthuka uma kuqhathaniswa neminye imikhiqizo efanayo. Ngakho-ke, ngeke kuthinte ukusetshenziswa lapho izinga lokushisa elizungezile likhuphuka kakhulu. Impilo yesevisi kanye nokusebenza kwamapayipi omlilo ambozwe ngaphakathi nangaphandle kungcono kakhulu kunalawo amapayipi ahlanganisiwe. Umbala ubomvu.

Ifektri yethu igxile ekukhiqizeni ipayipi lomlilo, ipayipi lensimbi elihlanganisiwe, ipayipi lokumboza ngophuphu, ipayipi lokumboza ngophuphu kanye nepayipi lensimbi elingamasentimitha angu-6. Ukusetshenziswa: ukuphakelwa kwamanzi omlilo, ukuphakelwa ngegesi kanye nohlelo lwamapayipi okuthutha oluphakathi ne-foam. Ikhwalithi yomkhiqizo iyadlula emasikweni futhi idlule ukuhlolwa okuningi ngaphambi kokushiya ifektri. Ihambisana nezindinganiso zekhwalithi zikazwelonke nezamazwe ngamazwe.

(1) Izakhiwo eziphezulu zemishini. I-resin ye-epoxy inokuhlangana okuqinile kanye nesakhiwo sama-molecule aminyene, ngakho-ke izakhiwo zayo zemishini ziphakeme kune-resin ejwayelekile ye-thermosetting njenge-phenolic resin kanye ne-unsaturated polyester.

(2) Ukwembozwa kwepayipi lomlilo elimbozwe ngepulasitiki kusebenzisa i-epoxy resin, enokunamathela okuqinile. Uhlelo lokwelapha i-epoxy resin luqukethe iqembu le-epoxy, iqembu le-hydroxyl, isibopho se-ether, isibopho se-amine, isibopho se-ester namanye amaqembu e-polar anomsebenzi omkhulu, okwenza imikhiqizo ephikisiwe ye-epoxy inamathele kahle kakhulu ensimbi, ezintweni zobumba, engilazini, kukhonkolo, okhunini nakwezinye izinto ezingaphansi kwe-polar.

(3) Ukuncipha okuncane kokushisa. Ngokuvamile 1% ~ 2%. Kungenye yezinhlobo ezine-curvage encane kakhulu yokushisa phakathi kwama-resin e-thermosetting (i-phenolic resin ingu-8% ~ 10%; i-polyester resin engagcwalisiwe ingu-4% ~ 6%; i-silicone resin ingu-4% ~ 8%). I-coefficient yokwandisa eqondile nayo incane kakhulu, ngokuvamile ingu-6 × 10-5/℃. Ngakho-ke, ivolumu ayishintshi kakhulu ngemva kokushisa.

(4) Ubuciko obuhle. I-resin ye-epoxy ayikhiqizi ukuwohloka okuphansi kwama-molecule ngesikhathi sokuqina, ngakho-ke ingakhiwa ngaphansi kwengcindezi ephansi noma ingcindezi yokuxhumana. Ingabambisana nama-ejenti ahlukahlukene okuqinisa ukukhiqiza izembozo ezinobungani nemvelo ezifana nezembozo ezingenaso isinyibilikisi, eziqinile kakhulu, ezimpuphu kanye nezembozo ezisekelwe emanzini.

(5) Ukushisa okuhle kakhulu kukagesi. I-Epoxy resin iyi-thermosetting resin enezakhiwo ezinhle zokuvimbela ukuminyana.

(6) Ukuqina okuhle kanye nokumelana okuhle kwamakhemikhali. I-epoxy resin engena-alkali, usawoti kanye nokunye ukungcola akulula ukuwohloka. Uma nje igcinwe kahle (ivaliwe, ingenawo umswakama kanye nokushisa okuphezulu), isikhathi sokugcina singunyaka owodwa. Ngemva kosuku lokuphelelwa yisikhathi, uma ukuhlolwa kufanele, kusengasetshenziswa. I-epoxy curing compound inokuqina okuhle kwamakhemikhali. Ukumelana kwayo nokugqwala kuma-alkali, i-asidi, usawoti kanye nezinye izinto kungcono kunokwe-unsaturated polyester resin, i-phenolic resin kanye nezinye i-thermosetting resin. Ngakho-ke, i-epoxy resin isetshenziswa kabanzi njenge-anti-corrosion primer. Ngenxa yokuthi i-epoxy resin elungisiwe inesakhiwo senethiwekhi esinezinhlangothi ezintathu futhi ingamelana nokuminyana kwamafutha, isetshenziswa kabanzi odongeni lwangaphakathi lwamathangi kawoyela, amathangi kawoyela kanye nezindiza.

Ipayipi lomlilo lesithombe 1

Umfanekiso 1 ipayipi lomlilo (izingcezu ezi-5)

(7) Ukumelana nokushisa kwe-epoxy curing compound ngokuvamile kungu-80 ~ 100 ℃. Izinhlobo ze-epoxy resin ezingamelani nokushisa zingafinyelela ku-200 ℃ noma ngaphezulu.