nkhani

FRP lineing ndi njira yodziwika bwino komanso yofunika kwambiri yowongolera dzimbiri popanga zinthu zolimba zotsutsana ndi dzimbiri. Pakati pa izi, FRP yokhazikika ndi manja imagwiritsidwa ntchito kwambiri chifukwa cha ntchito yake yosavuta, yosavuta komanso yosinthasintha. Tinganene kuti njira yokhazikika ndi manja imakhala ndi gawo loposa 80% la FRP yolimbana ndi dzimbiri. Utoto wa "zipangizo zitatu zazikulu" wa utomoni, ulusi ndi ufa mu FRP yokhazikika ndi mafupa a FRP, zomwe zimathandiza mphamvu ya dongosolo la FRP, ndipo ndi gawo lofunikira pakuzindikira zotsatira za nthawi yayitali za FRP yolimbana ndi dzimbiri.

Malinga ndi kusiyana kwa malo owononga ndi pakati, zinthu zomwe zili mu FRP zidzasinthanso. Kusankha zinthu zofunikira panthawi yomanga ndi chinthu chofunikira kwambiri kuti zinthu za FRP zomalizidwa zigwirizane ndi malo owononga komanso kulimba kwake. Chifukwa chake, kusankha zinthu zolimbitsa FRP kuyenera kutsimikiziridwa musanamange. Mwachitsanzo, zinthu zolimbitsa zomwe zimayimiridwa ndi ulusi wagalasi ndi zinthu zomwe zimagwiritsidwa ntchito kwambiri mu ulusi, zomwe zimatha kupirira dzimbiri la asidi; komabe, sizimalimbana ndi dzimbiri la hydrofluoric acid ndi dzimbiri la phosphoric acid. Gwiritsani ntchito polyester, polypropylene ndi nsalu zina za ulusi wachilengedwe ndi felt, mutha kusankhanso kugwiritsa ntchito nsalu kapena gauze wochotsedwa mafuta, ndipo zinthu zina za FRP zimafuna kukana dzimbiri ndi kuyendetsa bwino, mutha kusankha zinthu za ulusi wa kaboni. Mwachidule, kusankha ulusi wolimbitsa FRP ndi manja ndi mfundo yaukadaulo komanso chidziwitso chomwe ukadaulo wotsutsana ndi dzimbiri ndi opanga ayenera kudziwa.

Mu zinthu zopangidwa ndi FRP zopakidwa, ulusi wambiri wolimbitsa ndi ulusi wagalasi, kaya ndi nsalu, felt kapena ulusi. Chifukwa chachikulu ndichakuti kuwonjezera pa mtengo wake, ilinso ndi makhalidwe abwino awa:
01 Kukana mankhwala
Ulusi wa nsalu wa inorganic fiberglass sudzawola, kuumba kapena kuwonongeka. Umalimbana ndi ma acid ambiri kupatula hydrofluoric ndi hot phosphoric acid.
02 Yokhazikika muyeso
Ulusi wagalasi womwe umagwiritsidwa ntchito popanga nsalu zagalasi sutambasuka kapena kufooka chifukwa cha kusintha kwa mlengalenga. Kutalika kwapadera pakagwa kusweka ndi 3-4%. Avereji ya kuchuluka kwa kutentha kwa mzere wa E-glass ndi 5.4 × 10-6 cm/cm/°C.
03 Kuchita bwino kwa kutentha
Nsalu za fiberglass zimakhala ndi mphamvu yochepa yotulutsa kutentha komanso mphamvu yotulutsa kutentha kwambiri. Fiberglass imachotsa kutentha mwachangu kuposa asbestos kapena ulusi wachilengedwe.
04 Mphamvu yolimba kwambiri
Ulusi wa fiberglass uli ndi chiŵerengero champhamvu kwambiri poyerekeza ndi kulemera. Paundi imodzi ya ulusi wa fiberglass ndi wolimba kawiri kuposa waya wachitsulo. Kuthekera kopanga mphamvu ya ulusi umodzi kapena iwiri mu nsalu kumawonjezera kusinthasintha kwa zinthu zomwe zimagwiritsidwa ntchito kumapeto.
05 Kukana kutentha kwambiri
Ulusi wagalasi wosapangidwa ndi zinthu zachilengedwe sutentha ndipo kwenikweni umatetezedwa ku kutentha kwambiri komwe kumawonedwa nthawi zambiri m'mafakitale. Fiberglass imasunga pafupifupi 50% ya mphamvu zake pa 700°F ndi 25% pa 1000°F.
06 Kuchepa kwa hygroscopicity
Ulusi wa fiberglass umapangidwa ndi ulusi wopanda mabowo ndipo motero umayamwa chinyezi chochepa kwambiri.
07 Kuteteza magetsi bwino
Mphamvu ya dielectric yambiri komanso dielectric yochepa, komanso kusayamwa madzi ambiri komanso kukana kutentha kwambiri, zimapangitsa nsalu za fiberglass kukhala zabwino kwambiri poteteza magetsi.
08 Kusinthasintha kwa malonda
Ulusi wofewa kwambiri womwe umagwiritsidwa ntchito mu ulusi wa fiberglass, kukula ndi mawonekedwe osiyanasiyana a ulusi, mitundu yosiyanasiyana yoluka, ndi zomaliza zambiri zapadera zimapangitsa nsalu za fiberglass kukhala zothandiza pa ntchito zosiyanasiyana zamafakitale.
09 mtengo wotsika mtengo wotsika
Nsalu za fiberglass zimatha kugwira ntchito ndipo mtengo wake ndi wofanana ndi nsalu zopangidwa ndi ulusi wachilengedwe.

Chifukwa chake, ulusi wagalasi ndi chinthu chabwino kwambiri chothandizira FRP chomwe chimayikidwa pamanja, chomwe ndi chotsika mtengo, chotsika mtengo, komanso chosavuta kugwiritsa ntchito. Ndi chimodzi mwa zipangizo zomwe zimagwiritsidwa ntchito kwambiri pakati pa zipangizo zambiri zolimbikitsira pakadali pano.