Ndi chitukuko chachangu m'munda wa mapulasitiki opangidwa ndi ulusi wagalasi wolimbikitsidwa,zinthu zopangidwa ndi phenolic resinamagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana. Izi zimachitika chifukwa cha khalidwe lawo lapadera, mphamvu yamakina apamwamba, komanso magwiridwe antchito abwino kwambiri. Chimodzi mwa zipangizo zofunika kwambiri ndizinthu zopangidwa ndi utomoni wa ulusi wa phenolic galasi.
Ulusi wagalasi wa phenolic, pakati pa ma resini oyambirira opangidwa ndi mafakitale, nthawi zambiri amakhala polycondensate yopangidwa ndi polymerization ya phenols ndi aldehydes pamaso pa chothandizira cha alkaline. Zowonjezera zina zimayikidwa kuti zigwirizane ndi kapangidwe ka macromolecular, ndikusandutsa kukhala kapangidwe ka macromolecular ka magawo atatu kosasungunuka komanso kosasungunuka, motero kumakhala kofalazinthu za polima zotenthetsera kutenthaMa resini a phenolic amayamikiridwa kwambiri chifukwa cha makhalidwe awo abwino kwambiri, kuphatikizapo kuchedwa kwa moto, kukhazikika kwa mawonekedwe ake, komanso mphamvu yabwino yamakina. Zinthu zimenezi zapangitsa kuti pakhale kafukufuku wambiri komanso kugwiritsa ntchito zipangizo za utomoni wa ulusi wa phenolic glass fiber.
Pamene chuma cha mafakitale chikupita patsogolo mofulumira, kufunika kwakukulu kumayikidwa pa ntchito ya zipangizo za ulusi wagalasi wa phenolic. Chifukwa chake,ulusi wagalasi wa phenolic wosinthidwa wamphamvu komanso wosatenthaakupangidwa ndikugwiritsidwa ntchito kwambiri.Utoto wa phenolic wosinthidwa wolimbikitsidwa ndi ulusi wagalasi (FX-501)Pakadali pano ndi chimodzi mwa zinthu zosinthidwa bwino kwambiri za utomoni wa ulusi wagalasi wa phenolic. Ndi mtundu watsopano wa zinthu zosinthidwa komanso zolimbikitsidwa za phenolic zomwe zimapangidwa pophatikiza ulusi wagalasi mu matrix yoyambirira ya utomoni kudzera mu kusakaniza.
Katundu wa Makina ndi Maudindo Omwe Amagwiritsidwa Ntchito
Utomoni wa ulusi wa phenolic glassnthawi zambiri amasankhidwa ngati matrix yazipangizo zosatha ntchito, zomangika, komanso zopanikizachifukwa cha mphamvu yake yabwino yolimba, kukana zosungunulira, komanso mphamvu zake zabwino kwambiri monga kuletsa moto.zinthu za matrixmakamaka imagwira ntchito ngati chomangira, cholumikiza zigawo zonse mwachilengedwe.Ulusi wagalasiamagwira ntchito ngati mayunitsi akuluakulu onyamula katundu mu zipangizo zosatha, zomwe zimapangitsa kuti katundu azitha kunyamula katundu, ndipo magwiridwe antchito awo apamwamba amakhudza mwachindunji mphamvu yolimbikitsira matrix.
Ntchito ya zinthu za matrix ndikulumikiza mwamphamvu zigawo zina za zinthu zomangirira, kuonetsetsa kuti katundu amasamutsidwa mofanana, kugawidwa, ndikugawidwa ku ulusi wosiyanasiyana wagalasi. Izi zimapatsa mphamvu ndi kulimba kwina kwa zinthuzo. Ulusi wamba, kuphatikizapo ulusi wagalasi, ulusi wachilengedwe, ulusi wachitsulo, ndi ulusi wa mchere, zimathandiza kusintha mphamvu zomangirira za zinthuzo.
Kunyamula katundu mu Zosakaniza ndi Zotsatira za Ulusi
In zinthu zopangidwa ndi ulusi wa phenolic galasimachitidwe, onse awiriulusi ndi utomoni wa matrix zimanyamula katundu, ndi ulusi wagalasi kukhalabe chonyamulira chachikulu. Pamene zinthu zopangidwa ndi ulusi wagalasi wa phenolic zikupindika kapena kupsinjika, kupsinjikako kumasamutsidwa mofanana kuchokera ku utomoni wa matrix kupita ku ulusi wagalasi payekha kudzera mu mawonekedwe, zomwe zimafalitsa bwino mphamvu yonyamula. Njirayi imawongolera mawonekedwe a makina a zinthu zopangidwa. Chifukwa chake, kuwonjezeka koyenera kwakuchuluka kwa ulusi wagalasi kumatha kukulitsa mphamvu ya zinthu zopangidwa ndi ulusi wagalasi wa phenolic.
Zotsatira zoyesera zikusonyeza izi:
- Magalasi a phenolic fiber composites okhala ndi ulusi wagalasi wa 20%amaonetsa kufalikira kosagwirizana kwa ulusi, ndipo madera ena alibe ulusi.
- Magalasi opangidwa ndi ulusi wa phenolic okhala ndi ulusi wagalasi wa 50%kusonyeza kufalikira kwa ulusi wofanana, malo osasweka bwino, komanso palibe zizindikiro zazikulu za kutuluka kwa ulusi wambiri. Izi zikusonyeza kuti ulusi wagalasi ukhoza kunyamula katundu pamodzi, zomwe zimapangitsa kutimphamvu yapamwamba yopindika.
- Ngati galasi lili ndi ulusi wa 70%, kuchuluka kwa ulusi wambiri kumabweretsa kuchuluka kochepa kwa matrix resin. Izi zingayambitse "kuchepa kwa resin" m'malo ena, zomwe zimalepheretsa kusamutsa kupsinjika ndikupanga kuchuluka kwa kupsinjika komwe kumachitika m'malo ena. Chifukwa chake, mphamvu zonse zamakina azinthu zopangidwa ndi ulusi wa phenolic glass fiber zimachepa.amakonda kuchepa.
Kuchokera ku zomwe zapezekazi,Kuwonjezera kwakukulu kovomerezeka kwa ulusi wagalasi mu zinthu zopangidwa ndi ulusi wa phenolic glass ndi 50%.
Kupititsa patsogolo Magwiridwe Antchito ndi Zinthu Zokhudza Kugwira Ntchito
Kuchokera ku deta ya manambala,zopangidwa ndi ulusi wa phenolic glassyokhala ndi ulusi wagalasi wa 50%onetsani pafupifupimphamvu yopindika katatu kuposa mphamvu yopindikandimphamvu yopondereza kanayi kuposa mphamvu yoponderezapoyerekeza ndi utomoni weniweni wa phenolic. Kuphatikiza apo, zinthu zina zomwe zimakhudza mphamvu ya pulasitiki yolimbikitsidwa ndi ulusi wagalasi wa phenolic ndi mongakutalika kwa ulusi wagalasindi awomomwe zinthu zilili.
Nthawi yotumizira: Juni-18-2025
