Umthelela Wezinto Zemvelo Ekuqineni Kwamabha E-Fiber Reinforced Plastic Reinforcement (FRP)

I-Fiber Reinforced Plastic Reinforcement(I-FRP Reinforcement) kancane kancane ithatha indawo yokuqinisa insimbi yendabuko kwezobunjiniyela bomphakathi ngenxa yokukhanya kwayo, amandla aphezulu kanye nezakhiwo ezimelana nokugqwala. Kodwa-ke, ukuqina kwayo kuthonywa yizici ezihlukahlukene zemvelo, futhi izici ezilandelayo ezibalulekile kanye nezinyathelo zokulwa nazo kufanele zibhekwe:

1. Umswakama kanye nemvelo yamanzi

Indlela yethonya:

Umswakama ungena ku-substrate obangela ukuvuvukala futhi wenze buthaka ibhondi yokusebenzelana ye-fiber-substrate.

I-Hydrolysis of glass fibers (GFRP) ingase yenzeke ngokulahlekelwa okukhulu kwamandla; ama-carbon fibers (CFRP) awathinteki kancane.

Ukuhamba ngebhayisikili okumanzi nokomile kusheshisa ukunwetshwa kwe-microcrack, kubangele ukubola kanye ne-debonding.

Izinyathelo zokuzivikela:

Khetha ama-resin e-hygroscopicity aphansi (isb. i-vinyl ester); enamathela ebusweni noma ukwelashwa ungangenisi amanzi.

Khetha i-CFRP endaweni enomswakama wesikhathi eside.

2. Izinga lokushisa kanye ne-Thermal Cycling

Imiphumela yokushisa ephezulu:

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

Izinga lokushisa eliphakeme lisheshisa i-hydrolysis kanye nokusabela kwe-oxidation (isbI-Aramid fiberI-AFRP isengozini yokuwohloka kokushisa).

Imiphumela yokushisa ephansi:

I-matrix embrittlement, ijwayele ukuqhekeka okuncane.

Ukuhamba ngebhayisikili okushisayo:

Umehluko ku-coefficient yokwanda okushisayo phakathi kwe-fiber ne-matrix kuholela ekuqongeleleni kokucindezelwa kobuso obuhlangene kanye nokucupha ukubopha.

Izinyathelo zokuzivikela:

Ukukhethwa kwezinsalela ezimelana nokushisa okuphezulu (isb. bismaleimide); ukwenza kahle kwe-fiber/substrate thermal match.

3. Imisebe ye-Ultraviolet (UV).

Indlela yethonya:

I-UV ibangela ukusabela kwe-photo-oxidation ye-resin, okuholela ekuchakeni kwendawo, ukugqama kanye nokuqhekeka okuncane.

Isheshisa ukungena komswakama kanye namakhemikhali, okubangela ukuwohloka kwe-synergistic.

Izinyathelo zokuzivikela:

Faka izinto zokudonsa ama-UV (isb i-titanium dioxide); vala ingaphezulu ngongqimba oluyisivikelo (isb. i-polyurethane coating).

Hlola njaloIzingxenye ze-FRPezindaweni eziveziwe.

4. Ukugqwala kwamakhemikhali

Indawo ene-Acidic:

Ukuguguleka kwesakhiwo se-silicate emicu yengilazi (i-GFRP ebucayi), okuholela ekuqhekekeni kwefayibha.

Izindawo ezine-alkaline (isb. uketshezi lwezimbotshana ezikhonkolo):

Iphazamisa inethiwekhi ye-siloxane yemicu ye-GFRP; I-resin matrix ingase ibe ne-saponify.

I-Carbon fiber (CFRP) inokumelana okuhle kakhulu kwe-alkali futhi ifanele izakhiwo zikakhonkolo.

Izindawo zesifutho sikasawoti:

Ukungena kwe-chloride ion kusheshisa ukugqwala okuphakathi kobuso futhi kuhambisane nomswakama ukuze kubhebhethekise ukuwohloka kokusebenza.

Izinyathelo zokuzivikela:

Ukukhethwa kwemicu yokungezwani namakhemikhali (isb., CFRP); ukungezwa kwezigcwalisi ezimelana nokugqwala ku-matrix.

5. Imijikelezo yokuqhwaza

Indlela yethonya:

Umswakama ongena kuma-microcracks uyabanda futhi ande, ukhulise umonakalo; ukuqhwaza okuphindaphindiwe nokuncibilika kuholela ekuqhekekeni kwe-matrix.

Izinyathelo zokuzivikela:

Lawula ukumuncwa kwamanzi okubalulekile; sebenzisa i-flexible resin matrix ukuze unciphise ukulimala okungama-brittle.

6. Ukulayisha nokuhamba kwesikhathi eside

Imiphumela yokulayisha emile:

Ukwenyuka kwe-resin matrix kuholela ekwabiweni kabusha kwengcindezi futhi imicu ingaphansi kwemithwalo ephezulu, engase ibangele ukuphuka.

I-AFRP inyathela kakhulu, i-CFRP inokumelana okuhle kakhulu nokukhuphuka.

Ukulayisha okunamandla:

Ukulayisha ukukhathala kusheshisa ukunwetshwa kwe-microcrack futhi kunciphisa impilo yokukhathala.

Izinyathelo zokuzivikela:

Vumela isici sokuphepha esiphezulu ekwakhiweni; khetha i-CFRP noma imicu ephezulu ye-modulus.

7. Ukuhlanganisa imvelo okudidiyelwe

Izimo zomhlaba wangempela (isb, izindawo zasolwandle):

Umswakamo, isifutho sikasawoti, ukushintshashintsha kwezinga lokushisa kanye nemithwalo yemishini kusebenza ngokuvumelana ukuze kufinyezwe impilo ibe mfushane kakhulu.

Isu lokuphendula:

Ukuhlola ukuhlolwa kokuguga okusheshisiwe kwezinto eziningi; design reserve reserve factor factor yesaphulelo.

Isifinyezo kanye Nezincomo

Ukukhethwa Kwezinto Ezibalulekile: Uhlobo lwefayibha ekhethwayo ngokwendawo (isb. I-CFRP ukumelana namakhemikhali okuhle, i-GFRP ebiza kancane kodwa idinga ukuvikelwa).

Idizayini yokuvikela: ukumbozwa kwendawo, ukwelashwa kokuvala, ukwakhiwa kwe-resin okwenziwe kahle.

Ukuqapha nokunakekela: ukutholwa njalo kwemifantu emincane kanye nokuwohloka kokusebenza, ukulungiswa ngesikhathi.

Ukuqina kweUkuqiniswa kwe-FRPidinga ukuqinisekiswa ngenhlanganisela yokwenziwa kahle kwezinto, idizayini yesakhiwo kanye nokuhlolwa kokuvumelana nezimo zemvelo, ikakhulukazi ezindaweni ezinokhahlo lapho ukusebenza kwesikhathi eside kudinga ukuqinisekiswa ngokucophelela.