nkhani

Fiberglass imagwiritsidwa ntchito kwambiri popanga zinthu zomangira komansozinthu zopangidwa ndi zinthu zosiyanasiyanandi kulimbitsa pansi chifukwa ndi kopepuka komanso kolimba. Anthu ambiri amafuna kudziwa yankho la funso ili: Zipangizo zopangira fiberglass ndi galasi wamba, ndiye kodi kuzikoka kukhala ulusi woonda kumawonjezera bwanji mphamvu ya zinthuzo? (Kodi mfundo yomwe imapangitsa izi kuchitika ndi iti?)

Pakadali pano, gulu la akatswiri a maphunziro limapereka mafotokozedwe angapo a Gwero la Mphamvu Yaikulu ya Fiberglass, ndipo njira ziwiri zomwe zimavomerezedwa kwambiri komanso zodziwika bwino ndi izi:

1.Lingaliro la Microcrack

Malinga ndi lingaliro ili, mphamvu ya galasi ndi yokwera kwambiri (kuyambira pafupifupi 2,000 MPa mpaka 12,000 MPa) chifukwa mphamvu yake imachokera ku mphamvu zapakati pa mamolekyu zomwe zimapanga zinthuzo. Komabe, m'mayesero, mphamvu yomwe imayesedwa mu mayeso ndi yocheperako kuposa mphamvu yayikulu ya chiphunzitso. Chifukwa chachikulu cha kusiyana pakati pawo ndi:

Galasi kapena fiberglass zimakhala ndi ming'alu yaying'ono kwambiri mkati kapena m'thupi lawo, ndipo ming'aluyi imapanga malo omwe galasi limapanikizika kwambiri. Mphamvu yonse ya kapangidwe kake imafooka chifukwa cha kukhalapo kwa ming'aluyi. Ma ming'alu a pamwamba ndi ming'alu yaying'ono kwambiri yomwe ingachepetse mphamvu ya kapangidwe ka Galasi.

Mphamvu ya fiberglass ndi yayikulu kwambiri kuposa galasi chifukwa cha zifukwa ziwiri zazikulu:

Kutentha kotentha kwambiri kunagwiritsidwa ntchito popangafiberglass, zomwe zinapanga galasi losungunuka lofanana kwambiri. Kufanana kumeneku kwa galasi losungunuka kumalepheretsa kupangika kwa ming'alu yaying'ono.

Malo ang'onoang'ono kwambiri a ulusi amachepetsa kwambiri mwayi wokhala ndi mikwingwirima yamkati.

Kuphatikiza apo, pali mgwirizano wokhazikika: ulusi ukachepa, mphamvu yake imakwera.

Izi zili choncho chifukwa ulusi wofewa uli ndi ming'alu yochepa komanso yaying'ono pamwamba, zomwe zimachepetsa bwino kupsinjika maganizo ndipo, motero, zimapangitsa kuti makina azigwira ntchito bwino kwambiri.

2.Lingaliro la Kuyang'ana kwa Maselo

Chiphunzitsochi chimapereka chifukwa chofotokozera momwe zinthu zilili.

Pojambula ndi kupanga fiberglass, chipangizochi chimagwiritsa ntchito mphamvu yosalekeza ya kukakamira pagalasi losungunuka. Mphamvu yakunja imapanga dongosolo kuchokera mwachisawawa; mamolekyu a ulusiwo amalumikizana mwadongosolo momwe kukakamirako kukugwiritsidwira ntchito.

Kakonzedwe ka mamolekyulu m'kapangidwe kamalimbitsa ma bond a mamolekyulu. Pamene kupsinjika kwa ma tensile kukagwiritsidwa ntchito pa chinthu chokhala ndi mamolekyulu okonzedwa bwino, kapangidwe kake kadzakhala kolimba kwambiri ku kupsinjika kwa ma tensile chifukwa cha ma bond ambiri pakati pa mamolekyulu omwe nthawi zambiri amakhala olimba kuposa ma bond omwe amalumikiza mamolekyu osagwirizana omwe ali pafupi. Chifukwa chake, popanga dongosolo lokonzedwa bwino la mamolekyulu, munthu amawonjezera mphamvu ya ma tensile ya kapangidwe kake.

Zinthu ziwiri zimathandiza kuti fiberglass ikhale ndi mphamvu zambiri:

1) kupezeka kwa ming'alu yaying'ono komanso yochepa;

2) kulinganiza bwino kwa mamolekyu panthawi yojambula.

Njira ziwiri izi zimapangafiberglasschinthu chofunikira m'mafakitale monga kuteteza kutentha, kulimbitsa nyumba, kuteteza dzimbiri, ndi zinthu zopangidwa ndi zinthu zosiyanasiyana.