Impembelelo yeZinto ezisiNgqongileyo ekuQinisekeni kweeBhari zeFiber Reinforced Plastic Reinforcement (FRP)

Uqiniswe lwePlastiki oluQinisekisiweyo lweFiber(i-FRP Reinforcement) ithatha indawo yokuqinisa intsimbi yendabuko kancinci kancinci kubunjineli bokwakha ngenxa yokuba ilula, inamandla aphezulu kwaye ayimelani nokugqwala. Nangona kunjalo, ukuqina kwayo kuchaphazeleka ziimeko ezahlukeneyo zokusingqongileyo, kwaye ezi zinto zilandelayo kunye neendlela zokuyilwa kufuneka ziqwalaselwe:

1. Umswakama kunye nendawo engqongileyo yamanzi

Indlela yempembelelo:

Ukufuma kungena kwi-substrate kubangela ukudumba kunye nokwenza buthathaka i-fiber-substrate interface bond.

I-Hydrolysis yeefayibha zeglasi (GFRP) inokwenzeka ngokulahlekelwa ngamandla okukhulu; iifayibha zekhabhoni (CFRP) azichaphazeleki kangako.

Ukuhamba ngebhayisikile okumanzi nokomileyo kukhawulezisa ukwanda kwe-microcrack, kubangela ukwahlukana kunye nokuqhekeka kwe-bonding.

Amanyathelo okukhusela:

Khetha iiresini ezinobumanzi obuphantsi (umz. i-vinyl ester); ukufakelwa komphezulu okanye unyango lokuthintela ukungenwa kwamanzi.

Khetha i-CFRP kwindawo enomswakama ixesha elide.

2. Ubushushu kunye nokujikeleza kobushushu

Iziphumo zobushushu obuphezulu:

I-resin matrix iyathamba (ngaphezu kobushushu bokutshintsha kweglasi), nto leyo ebangela ukuqina nokuqina okuphantsi.

Ubushushu obuphezulu bukhawulezisa i-hydrolysis kunye ne-oxidation reaction (umz.Ifayibha ye-AramidI-AFRP isengozini yokuwohloka kobushushu).

Iziphumo zobushushu obuphantsi:

Ukuqhekeka kwe-matrix, okubangela ukuba i-microcrack ibonakale incinci.

Ukujikeleza ngesantya sobushushu:

Umahluko kwi-coefficient yokwandiswa kobushushu phakathi kwefayibha kunye ne-matrix ukhokelela ekuqokeleleni koxinzelelo lwe-interfacial kwaye kubangele ukuqhekeka kwe-debond.

Amanyathelo okukhusela:

Ukukhethwa kweeresini ezimelana nobushushu obuphezulu (umz. i-bismaleimide); ukwenziwa ngcono kwe-fiber/substrate thermal match.

3. Imitha ye-Ultraviolet (UV)

Indlela yempembelelo:

I-UV ibangela ukusabela kwe-photo-oxidation ye-resin, nto leyo ekhokelela ekutshixeni komphezulu, ekuqhekekeni nasekuqhekekeni okukhulu kwe-micro-cracking.

Ikhawulezisa ukungena komswakama kunye neekhemikhali, ibangela ukuwohloka kwentsebenziswano.

Amanyathelo okukhusela:

Yongeza izifunxi ze-UV (umz. i-titanium dioxide); gquma umphezulu ngomaleko okhuselayo (umz. i-polyurethane coating).

Hlola rhoqoIzixhobo ze-FRPkwiindawo ezingabonakaliyo.

4. Ukugqwala kweekhemikhali

Indawo eneasidi:

Ukukhukuliseka kwesakhiwo se-silicate kwiifayibha zeglasi (ezinobuthathaka kwi-GFRP), nto leyo ebangela ukwaphuka kwefayibha.

Iindawo ezine-alkaline (umz. ulwelo lwemingxunya yekhonkrithi):

Iphazamisa inethiwekhi ye-siloxane yeefayibha ze-GFRP; i-resin matrix isenokutshayela.

I-Carbon fiber (CFRP) inokumelana okuhle kakhulu ne-alkali kwaye ifanelekile kwizakhiwo zekhonkrithi.

Iindawo zokutshiza ityuwa:

Ukungena kwe-ion ye-chloride kukhawulezisa ukugqwala kwe-interfacial kwaye kuhambelana nokufuma ukuze kubangele ukuwohloka kokusebenza.

Amanyathelo okukhusela:

Ukukhethwa kweefayibha ezimelana neekhemikhali (umz., i-CFRP); ukongezwa kwezizalisi ezimelana nokugqwala kwi-matrix.

5. Imijikelo yokuqandisa nokunyibilikisa

Indlela yempembelelo:

Ukufuma okungena kwiimfanta ezincinci kuyabanda kwaye kwande, okwandisa umonakalo; ukuqandisa okuphindaphindiweyo kunye nokunyibilika kukhokelela ekuqhekekeni kwe-matrix.

Amanyathelo okukhusela:

Lawula ukufunxwa kwamanzi kwezinto; sebenzisa i-flexible resin matrix ukunciphisa umonakalo oqhekekayo.

6. Ukulayisha ixesha elide kunye nokurhubuluza

Iziphumo zomthwalo ozinzileyo:

Ukuqhekeka kwe-resin matrix kukhokelela ekusasazweni ngokutsha koxinzelelo kwaye iifayibha zithwaxwa yimithwalo ephezulu, nto leyo enokubangela ukwaphuka.

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

Ukulayisha okutshintshayo:

Ukudinwa kukhawulezisa ukwanda kwe-microcrack kwaye kunciphisa ubomi bokudinwa.

Amanyathelo okukhusela:

Vumela ukhuseleko oluphezulu kuyilo; khetha i-CFRP okanye iifayibha ze-modulus eziphezulu.

7. Ukudibanisa okusingqongileyo okudibeneyo

Iimeko zehlabathi lokwenyani (umz., iindawo zaselwandle):

Umswakama, ityuwa etshisiweyo, ukuguquguquka kobushushu kunye nemithwalo yoomatshini zisebenza ngokubambisana ukuze zinciphise ubomi kakhulu.

Icebo lokuphendula:

Uvavanyo lokwaluphala olukhawulezisiweyo lwezinto ezininzi; isaphulelo sendalo esigciniweyo soyilo.

Isishwankathelo kunye neeNgcebiso

Ukukhethwa kwezinto: Uhlobo lwefayibha olukhethwayo ngokwendalo esingqongileyo (umz. I-CFRP iyamelana kakuhle neekhemikhali, ixabiso eliphantsi le-GFRP kodwa idinga ukhuseleko).

Uyilo lokhuseleko: ukugquma umphezulu, unyango lokutywina, ukwenziwa kwe-resin elungiselelweyo.

Ukubeka iliso nokugcinwa: ukubonwa rhoqo kwee-micro-cracks kunye nokonakala kokusebenza, ukulungiswa ngexesha elifanelekileyo.

Ukuqina kweUkuqinisa i-FRPkufuneka kuqinisekiswe ngokudityaniswa kokwenziwa ngcono kwezinto, uyilo lwesakhiwo kunye novavanyo lokuziqhelanisa nokusingqongileyo, ingakumbi kwiindawo ezinzima apho ukusebenza kwexesha elide kufuneka kuqinisekiswe ngononophelo.