Ithonya Lezici Zemvelo Ekuqineni Kwezibha Zokuqinisa Ipulasitiki Eziqinisiwe (i-FRP)

Ukuqinisa Ipulasitiki Okuqinisiwe Ngefayibha(i-FRP Reinforcement) kancane kancane ithatha indawo yokuqinisa insimbi yendabuko kubunjiniyela bezakhiwo ngenxa yezakhiwo zayo ezilula, ezinamandla aphezulu kanye nokumelana nokugqwala. Kodwa-ke, ukuqina kwayo kuthinteka yizici ezahlukahlukene zemvelo, futhi lezi zici ezibalulekile kanye nezinyathelo zokumelana nazo kudingeka zicatshangelwe:

1. Umswakama kanye nendawo ezungezile amanzi

Indlela yethonya:

Umswakama ungena ngaphakathi kwe-substrate okubangela ukuvuvukala futhi kwenze buthaka isibopho se-fiber-substrate interface.

I-Hydrolysis yemicu yengilazi (GFRP) ingenzeka ngokulahlekelwa amandla okukhulu; imicu yekhabhoni (CFRP) ayithinteki kakhulu.

Ukujikeleza okumanzi nokomile kusheshisa ukwanda kwe-microcrack, okubangela ukwahlukana kanye nokuqhekeka kwezibopho.

Izindlela zokuvikela:

Khetha ama-resin aphansi ane-hygroscopicity (isb. i-vinyl ester); ukugqoka okuphezulu noma ukwelashwa kokuvimbela amanzi.

Khetha i-CFRP endaweni enomswakama isikhathi eside.

2. Ukushisa Nokujikeleza Kokushisa

Imiphumela yokushisa okuphezulu:

I-resin matrix iyathamba (ngaphezu kwezinga lokushisa lokushintsha kwengilazi), okuholela ekunciphiseni ukuqina namandla.

Ukushisa okuphezulu kusheshisa i-hydrolysis kanye ne-oxidation reaction (isb.I-Aramid fiberI-AFRP isengozini yokuwohloka kokushisa).

Imiphumela yokushisa okuphansi:

Ukuqhekeka kwe-matrix, okuvame ukuqhekeka kancane.

Ukujikeleza kwe-thermal:

Umehluko ku-coefficient yokwanda kokushisa phakathi kwe-fiber kanye ne-matrix kuholela ekuqongeleleni kokucindezeleka kwe-interfacial futhi kubangele ukuhlukana.

Izindlela zokuvikela:

Ukukhethwa kwama-resin amelana nokushisa okuphezulu (isb. i-bismaleimide); ukwenza ngcono ukufaniswa kokushisa kwe-fiber/substrate.

3. Imisebe ye-Ultraviolet (UV)

Indlela yethonya:

I-UV ibangela ukusabela kwe-photo-oxidation kwe-resin, okuholela ekuqhekekeni kobuso, ukuqhekeka kanye nokwanda kokuqhekeka okuncane.

Kusheshisa ukungena komswakama namakhemikhali, okubangela ukuwohloka kokubambisana.

Izindlela zokuvikela:

Faka izifutho ze-UV (isb. i-titanium dioxide); mboza indawo ngesendlalelo esivikelayo (isb. i-polyurethane coating).

Hlola njaloIzingxenye ze-FRPezindaweni eziveziwe.

4. Ukugqwala kwamakhemikhali

Indawo ene-asidi:

Ukuguguleka kwesakhiwo se-silicate kuma-fiber engilazi (okuzwela i-GFRP), okuholela ekuqhekekeni kwe-fiber.

Izindawo ezine-alkaline (isb. uketshezi lwezimbobo zekhonkrithi):

Iphazamisa inethiwekhi ye-siloxane yemicu ye-GFRP; i-resin matrix ingase i-saponify.

I-carbon fiber (CFRP) inokumelana okuhle kakhulu kwe-alkali futhi ifanele izakhiwo zekhonkrithi.

Izindawo zokufutha usawoti:

Ukungena kwe-ion ye-chloride kusheshisa ukugqwala kwe-interfacial futhi kuhambisana nomswakama ukuze kubhebhethekise ukuwohloka kokusebenza.

Izindlela zokuvikela:

Ukukhethwa kwemicu emelana namakhemikhali (isb., i-CFRP); ukwengezwa kwezigcwalisi ezimelana nokugqwala ku-matrix.

5. Imijikelezo yokuqandisa nokuncibilikisa

Indlela yethonya:

Umswakama ongena emifantwini emincane uyaqina futhi unwebeke, okwenza umonakalo wande; ukuqandisa nokuncibilika okuphindaphindiwe kuholela ekuqhekekeni kwe-matrix.

Izindlela zokuvikela:

Lawula ukumuncwa kwamanzi kwezinto; sebenzisa i-resin matrix eguquguqukayo ukuze unciphise umonakalo oqhekekayo.

6. Ukulayisha isikhathi eside kanye nokukhukhuleka

Imiphumela yomthwalo oqinile:

Ukuqhekeka kwe-resin matrix kuholela ekusatshalalisweni kabusha kokucindezeleka futhi imicu ifakwa imithwalo ephezulu, okungase kubangele ukuqhekeka.

I-AFRP iyanda kakhulu, i-CFRP inokumelana okuhle kakhulu nokuyanda.

Ukulayisha okuguqukayo:

Ukulayisha ukukhathala kusheshisa ukwanda kwe-microcrack futhi kunciphisa isikhathi sokukhathala.

Izindlela zokuvikela:

Vumela ukuthi kube nesici sokuphepha esiphezulu ekwakhiweni; khetha i-CFRP noma imicu ye-modulus ephezulu.

7. Ukuhlanganiswa kwemvelo okuhlanganisiwe

Izimo zomhlaba wangempela (isb., izindawo zasolwandle):

Umswakama, isifutho sikasawoti, ukushintshashintsha kwezinga lokushisa kanye nemithwalo yemishini kusebenza ngokubambisana ukuze kufinyezwe impilo ngendlela emangalisayo.

Isu lokuphendula:

Ukuhlolwa kokuhlolwa kokuguga okusheshayo kwezinto eziningi; isici sesaphulelo semvelo sokugcina umklamo.

Isifinyezo kanye Nezincomo

Ukukhethwa Kwezinto: Uhlobo lwefayibha olukhethwayo ngokwendawo ezungezile (isb. Ukumelana okuhle kwamakhemikhali e-CFRP, i-GFRP eshibhile kodwa idinga ukuvikelwa).

Umklamo wokuvikela: ukumbozwa kobuso, ukwelashwa kokuvala, ukwakheka kwe-resin okwenziwe ngcono.

Ukuqapha nokulungisa: ukutholakala njalo kwemifantu emincane kanye nokwehla kokusebenza, ukulungiswa ngesikhathi.

Ukuqina kweUkuqinisa i-FRPkudinga ukuqinisekiswa ngokuhlanganiswa kokwenziwa ngcono kwezinto, ukwakheka kwesakhiwo kanye nokuhlolwa kokuzivumelanisa nezimo kwemvelo, ikakhulukazi ezindaweni ezinzima lapho ukusebenza kwesikhathi eside kudinga ukuqinisekiswa ngokucophelela.