Kusimbiswa kwepurasitiki yakasimbiswa nefiber(FRP Reinforcement) iri kutsiva zvishoma nezvishoma simbi yechinyakare muinjiniya yezvivakwa nekuda kwehuremu hwayo hwakareruka, simba rayo guru uye hunhu hwayo hunodzivirira ngura. Zvisinei, kugara kwayo kwenguva refu kunokanganiswa nezvinhu zvakasiyana-siyana zvakatipoteredza, uye zvinhu zvinotevera zvakakosha uye matanho ekudzivirira anofanirwa kufungwa nezvazvo:
1. Hunyoro nenzvimbo yemvura
Maitiro ekupesvedzera:
Mwando unopinda mu substrate zvichikonzera kuzvimba uye kusasimba kwekubatana kwe fiber-substrate.
Kunyungudika kwemagirazi (GFRP) kunogona kuitika nekurasikirwa nesimba zvakanyanya; mafirita ekabhoni (CFRP) haanyanyi kukanganiswa.
Kufamba kwakanyorova uye kwakaoma kunokurumidza kukura kwe microcrack, zvichikonzera kucheka uye kupatsanurana.
Matanho ekudzivirira:
Sarudza maresini asina hunyoro hwakanyanya (semuenzaniso vinyl ester); kufukidza pamusoro kana kugadzirisa mvura.
Sarudza CFRP munzvimbo ine hunyoro kwenguva refu.
2. Kupisa uye Kutenderera Kwekupisa
Migumisiro yekupisa kwakanyanya:
Resin matrix inonyorova (pamusoro pekupisa kwekuchinja kwegirazi), zvichiita kuti kuomarara uye simba zviderere.
Kupisa kwakanyanya kunokurumidza hydrolysis uye oxidation reaction (semuenzanisoFaibha yeAramidAFRP inogona kukanganiswa nekupisa).
Migumisiro yekupisa kwakaderera:
Matrix inopwanyika, inokurumidza kutsemuka.
Kutenderera kwekupisa:
Musiyano uripo pakati pekuwedzera kwekupisa kwefiber ne matrix unotungamira mukuunganidzwa kwekumanikidzwa kwe interfacial uye zvinokonzera debonding.
Matanho ekudzivirira:
Kusarudzwa kwemaresini anodzivirira kupisa kwakanyanya (semuenzaniso bismaleimide); kugadzirisa machisi ekupisa efiber/substrate.
3. Mwaranzi yeUltraviolet (UV)
Maitiro ekupesvedzera:
UV inokonzera kuitika kwe "photo-oxidation" kwe "resin", zvichikonzera kuti pamusoro payo pave ne "chalk", "embrittle" uye kuwedzera kwe "micro-cracking".
Inokurumidza kupinda kwehunyoro nemakemikari, zvichikonzera kuora kwekubatana.
Matanho ekudzivirira:
Wedzera zvinonyudza UV (semuenzaniso titanium dioxide); vhara pamusoro nechikamu chinodzivirira (semuenzaniso polyurethane coating).
Gara uchiongororaZvikamu zveFRPmunzvimbo dzakafumurwa.
4. Kuora kwemakemikari
Nzvimbo ine acidic:
Kukukurwa kwechimiro chesilicate mumagirazi (anonzwa kuGFRP), zvichikonzera kuputsika kwefiber.
Nzvimbo dzine alkaline (semuenzaniso mvura dzemumaburi ekongiri):
Inokanganisa network ye siloxane yeGFRP fibers; resin matrix inogona kusvibisa.
Kabhoni fiber (CFRP) ine simba guru rekudzivirira alkali uye yakakodzera zvivakwa zvekongiri.
Nzvimbo dzekupfapfaidza munyu:
Kupinda kwemaion echloride kunokurumidza ngura pakati pechiso uye kunoshanda pamwe chete nehunyoro kuti kuwedzere kudzikira kwekushanda.
Matanho ekudzivirira:
Kusarudzwa kwemafiber anodzivirira makemikari (semuenzaniso, CFRP); kuwedzerwa kwemafiller anodzivirira ngura ku matrix.
5. Kuomesa nekunyungudutsa nechando
Maitiro ekupesvedzera:
Mwando unopinda mumakatsemuka madiki unooma wobva wawedzera kukura, zvichiwedzera kukuvara; kuoma nechando kakawanda uye kunyunguduka kunoita kuti matrix iparare.
Matanho ekudzivirira:
Dzora mvura inonyudzwa nezvinhu; shandisa matrix inochinjika ye resin kuderedza kukuvara kusingatani kuputsika.
6. Kutakura kwenguva refu uye kukwira
Mhedzisiro yemutoro usingachinji:
Kudonha kwe resin matrix kunotungamira mukugoverwazve kwekushushikana uye fibers dzinoiswa mutoro wakawanda, izvo zvinogona kukonzera kutyoka.
AFRP inokambaira zvakanyanya, CFRP ine simba rakanakisisa rekudzivirira kukambaira.
Kurodha kwakasimba:
Kurema kunosimudzira kukura kwe microcrack uye kunoderedza nguva yekuneta.
Matanho ekudzivirira:
Bvumira kuchengetedzeka kwakanyanya mukugadzirwa; sarudza CFRP kana mafiber ane modulus yakawanda.
7. Kubatanidzwa kwezvakatipoteredza kwakabatana
Mamiriro ezvinhu chaiwo (semuenzaniso, nharaunda dzemugungwa):
Hunyoro, munyu unopfapfaidzwa, kuchinja-chinja kwetembiricha uye mutoro wemakanika zvinoshanda pamwe chete kuti zvipfupise hupenyu hwezvinhu zvikuru.
Maitiro ekupindura:
Kuongororwa kwekuyedza kwekukwegura kunokurumidza kwezvinhu zvakawanda; dhizaini yekuchengetedza nharaunda ine mutengo wekuchengetedza.
Pfupiso uye Mazano
Kusarudzwa Kwezvinhu: Rudzi rwefaibha runodiwa zvichienderana nenzvimbo (semuenzaniso CFRP inodzivirira makemikari zvakanaka, GFRP inodhura zvishoma asi inoda dziviriro).
Dhizaini yekudzivirira: kufukidza pamusoro, kurapwa kwekuvhara, kugadzirwa kwe resin yakagadziriswa.
Kutarisa nekugadzirisa: kuona nguva dzose maburi madiki uye kuora kwekushanda, kugadzirisa nenguva.
Kugara kwenguva refu kweKusimbiswa kweFRPinofanira kuvimbiswa nekubatanidzwa kwekugadzirisa zvinhu, dhizaini yezvivakwa uye kuongororwa kwemamiriro ekunze, kunyanya munzvimbo dzakaoma uko mashandiro enguva refu anofanira kuongororwa nekungwarira.
Nguva yekutumira: Kubvumbi-02-2025
