I-Epoxy Resin

1、Isingeniso

I-resin ye-epoxy ivame ukusetshenziswa kanye nezinye izithako. Izithasiselo zingakhethwa ngokwezindlela ezahlukene zokusetshenziswa. Izithasiselo ezivamile zifaka phakathi i-Curing Agent, i-Modifier, i-Filler, i-Diluent, njll.

I-ejenti yokwelapha iyisithako esibalulekile. Kungakhathaliseki ukuthi i-epoxy resin isetshenziswa njenge-glue, i-coating, i-castable, i-ejenti yokwelapha kufanele ifakwe, ngaphandle kwalokho ayikwazi ukuphulukiswa. Ngenxa yezidingo ezahlukene zokusetshenziswa nokusebenza, kunezidingo ezahlukene ze-epoxy resin, i-ejenti yokwelapha, i-modifier, i-filler, i-diluent nezinye izithasiselo.

2,Ukukhethwa kwe-Epoxy Resin

(1) Khetha ngokuya nge-Aplication

① Uma isetshenziswa njenge-glue, kungcono ukukhetha i-resin enenani eliphakathi le-epoxy (0.25-0.45);

② Uma isetshenziswa njengento ephothwayo, kungcono ukukhetha i-resin enenani eliphezulu le-epoxy (0.40);

③ Uma isetshenziswa njengengubo, i-resin enenani eliphansi le-epoxy (< 0.25) ngokuvamile iyakhethwa.

(2) Khetha ngokuya ngamandla omshini

Amandla ahlobene nezinga lokuxhumanisa. Inani le-epoxy liphezulu, kanti izinga lokuxhumanisa nalo liphezulu ngemva kokuqina. Inani le-epoxy liphansi kanti izinga lokuxhumanisa liphansi ngemva kokuqina. Inani le-epoxy elihlukile lizophinde libangele amandla ahlukene.

① I-resin enenani eliphezulu le-epoxy inamandla aphezulu kodwa iyaphuka kalula;

② I-resin enenani eliphakathi le-epoxy inamandla amahle ekushiseni okuphezulu nokuphansi;

③ I-resin enenani eliphansi le-epoxy inamandla amancane uma izinga lokushisa liphezulu.

(3) Khetha ngokuya ngezidingo zokusebenza

① Kulabo abangadingi ukumelana nokushisa okuphezulu namandla, bangakhetha i-resin enenani eliphansi le-epoxy engoma ngokushesha futhi okungelula ukuyilahleka.

② Kulabo abadinga ukuvuleka okuhle kanye namandla, bangakhetha i-resin enenani eliphezulu le-epoxy.

3,Ukukhethwa kwe-Agent Yokwelapha

(1) Uhlobo Lomuthi Wokwelapha:

Ama-ejenti okwelapha avamile e-epoxy resin afaka phakathi i-aliphatic amine, i-alicyclic amine, i-aromatic amine, i-polyamide, i-anhydride, i-resin kanye ne-tertiary amine. Ngaphezu kwalokho, ngaphansi kwethonya le-photoinitiator, i-UV noma ukukhanya nakho kungenza i-epoxy resin curing. I-Amine curing agent ngokuvamile isetshenziselwa ukushisa kwegumbi noma ukushisa okuphansi, kuyilapho i-anhydride kanye ne-aromatic curing agent zivame ukusetshenziswa ekufudumaleni.

(2) Isilinganiso se-Agent yokwelapha

① Uma i-amine isetshenziswa njenge-ejenti yokuxhumanisa, ibalwa kanje:

Isilinganiso se-amine = MG / HN

M = isisindo sama-molecule e-amine;

I-HN = inani le-hydrogen esebenzayo;

G = inani le-epoxy (elilingana ne-epoxy ngamagremu ayi-100 e-resin ye-epoxy)

Ububanzi bokushintsha abudluli ku-10-20%. Uma ilashwa nge-amine eningi, i-resin izophuka. Uma umthamo uncane kakhulu, ukuqina kwayo akuphelele.

② Uma i-anhydride isetshenziswa njenge-ejenti yokuxhumanisa, ibalwa kanje:

Isilinganiso se-Anhydride = MG (0.6 ~ 1) / 100

M = isisindo sama-molecule se-anhydride;

I-G = inani le-epoxy (0.6 ~ 1) yi-coefficient yokuhlola.

(3) Isimiso Sokukhetha I-Ejenti Yokwelapha

① Izidingo Zokusebenza.

Ezinye zidinga ukumelana nokushisa okuphezulu, ezinye zidinga ukuguquguquka, kanti ezinye zidinga ukumelana nokugqwala okuhle. I-ejenti yokwelapha efanele ikhethwa ngokwezidingo ezahlukene.

② Indlela Yokwelapha.

Eminye imikhiqizo ayikwazi ukufudunyezwa, khona-ke i-ejenti yokwelapha yokwelapha ukushisa ayikwazi ukukhethwa.

③ Isikhathi Sokufaka Isicelo.

Isikhathi sokusetshenziswa esibizwa ngokuthi isikhathi sibhekisela esikhathini kusukela ngesikhathi i-epoxy resin ingezwa ne-ejenti yokwelapha kuze kube yisikhathi lapho ingasetshenziswa khona isikhathi eside. Uma kusetshenziswa isikhathi eside, ama-anhydride noma ama-ejenti okwelapha afihliwe ngokuvamile asetshenziswa.

④ Ukuphepha.

Ngokuvamile, into yokwelapha engenabo ubuthi obuncane ingcono futhi iphephile ekukhiqizweni.

⑤ Izindleko.

4、Ukukhethwa Komguquli

Umphumela we-modifier ukuthuthukisa ukushiswa kwesikhumba, ukumelana nokucheba, ukumelana nokugoba, ukumelana nomthelela kanye nokusebenza kokushisa kwe-epoxy resin.

(1) Iziguquli Ezivamile Nezimpawu

① Irabha ye-Polysulfide: ithuthukisa amandla okuthinteka kanye nokumelana nokuxebuka;

② I-polyamide resin: ithuthukisa ukubuthaka nokunamathela;

③ I-Polyvinyl alcohol TERT butyraldehyde: ithuthukisa ukumelana nokushiswa kwesikhumba okunomthelela;

④ I-NBR: kuthuthukisa ukumelana nokushiswa kwesikhumba okunomthelela;

⑤ I-resin ye-phenolic: ithuthukisa ukumelana nokushisa kanye nokumelana nokugqwala;

⑥ I-resin ye-polyester: ithuthukisa ukumelana nokushiswa kwesikhumba okunomthelela;

⑦ I-urea formaldehyde melamine resin: yandisa ukumelana namakhemikhali kanye namandla;

⑧ I-resin ye-furfural: ithuthukisa ukusebenza kokugoba okungaguquki, ithuthukisa ukumelana ne-asidi;

⑨ I-resin ye-vinyl: ithuthukisa ukumelana nokuxebuka kanye namandla okushaywa;

⑩ I-Isocyanate: kunciphisa ukungena komswakama futhi kwandise ukumelana namanzi;

11 I-Silicone: ithuthukisa ukumelana nokushisa.

(2) Isilinganiso

① Irabha ye-polysulfide: 50-300% (ene-ejenti yokwelapha);

② I-polyamide resin kanye ne-phenolic resin: 50-100%;

③ I-resin ye-polyester: 20-30% (ngaphandle kwe-ejenti yokwelapha, noma inani elincane le-ejenti yokwelapha ukusheshisa ukusabela.

Ngokuvamile, uma kusetshenziswa i-modifier eningi, kulapho ukuguquguquka kuba kukhulu khona, kodwa izinga lokushisa lokuguquguquka kokushisa kwemikhiqizo ye-resin liyancipha ngokufanele. Ukuze kuthuthukiswe ukuguquguquka kwe-resin, kuvame ukusetshenziswa izinto zokuqinisa ezifana ne-dibutyl phthalate noma i-dioctyl phthalate.

5、Ukukhethwa Kwabagcwalisi

Umsebenzi wama-filler ukuthuthukisa ezinye izakhiwo zemikhiqizo kanye nezimo zokushabalalisa ukushisa kokwelapha i-resin. Kunganciphisa futhi inani le-epoxy resin futhi kunciphise izindleko. Ama-filler ahlukene angasetshenziswa ngezinhloso ezahlukene. Kufanele abe ngaphansi kwe-mesh eyi-100, futhi umthamo uncike ekusetshenzisweni kwawo. Ama-filler avamile alandelayo:

(1) I-Asbestos fiber kanye ne-glass fiber: kwandisa ukuqina kanye nokumelana nomthelela;

(2) Impuphu ye-Quartz, i-porcelain powder, i-iron powder, i-cement, i-emery: kwandisa ubulukhuni;

(3) I-Alumina kanye ne-porcelain powder: kwandisa amandla okunamathela kanye namandla okusebenza;

(4) Impuphu ye-asbestos, i-silica gel powder kanye ne-simende eshisa kakhulu: kuthuthukisa ukumelana nokushisa;

(5) Impuphu ye-asbestos, impuphu ye-quartz kanye nempuphu yamatshe: kunciphisa izinga lokuncibilika;

(6) Impuphu ye-aluminiyamu, impuphu yethusi, impuphu yensimbi kanye nezinye izimpuphu zensimbi: kwandisa ukuhanjiswa kokushisa kanye nokuhanjiswa komoya;

(7) Impuphu ye-Graphite, i-talc powder kanye ne-quartz powder: ithuthukisa ukusebenza kokulwa nokuguguleka kanye nokusebenza kokuthambisa;

(8) I-Emery kanye nezinye izinto zokubhula: zithuthukisa ukusebenza kokulwa nokuguguleka;

(9) Impuphu ye-Mica, i-porcelain powder kanye ne-quartz powder: kwandisa ukusebenza kokushisa;

(10) Zonke izinhlobo zemibala kanye ne-graphite: ngombala;

Ngaphezu kwalokho, ngokusho kwedatha, inani elifanele (27-35%) lama-oxide e-P, As, Sb, Bi, Ge, Sn kanye ne-Pb afakwe ku-resin angagcina ukunamathela ngaphansi kokushisa okuphezulu kanye nengcindezi.

6、Ukukhethwa kwe-Diluent

Umsebenzi we-diluent ukunciphisa i-viscosity nokuthuthukisa ukugeleza kwe-resin. Ingahlukaniswa ngezigaba ezimbili ezingasebenzi nezingasebenzi, futhi inani ngokuvamile alidluli ku-30%. Izinto ezivamile ezisetshenziswayo zifaka i-diglycidyl ether, i-polyglycidyl ether, i-propylene oxide butyl ether, i-propylene oxide phenyl ether, i-dicyclopropane ethyl ether, i-triethoxypropane propyl ether, i-inert diluent, i-xylene, i-toluene, i-acetone, njll.

7、Izidingo Zezinto Ezibalulekile

Ngaphambi kokufaka i-ejenti yokwelapha, zonke izinto ezisetshenziswayo, njenge-resin, i-ejenti yokwelapha, i-filler, i-modifier, i-diluent, njll., kumele zihlolwe, okuzohlangabezana nezidingo ezilandelayo:

(1) Awekho amanzi: izinto eziqukethe amanzi kufanele zomiswe kuqala, futhi izinyibilikisi eziqukethe inani elincane lamanzi kufanele zisetshenziswe kancane ngangokunokwenzeka.

(2) Ubumsulwa: okuqukethwe kokungcola ngaphandle kwamanzi kufanele kube ngaphansi kuka-1%. Nakuba kungasetshenziswa futhi nokungcola okungu-5%-25%, iphesenti lezinye izinto ezisetshenziswayo kufomula kufanele lenyuswe. Kungcono ukusebenzisa izinga le-reagent ngenani elincane.

(3) Isikhathi Sokusebenza: Kuyadingeka ukwazi ukuthi izinto azivumelekile yini.