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Fiberglassigirazi-yakavakirwa fibrous zvinhu izvo chikuru chikamu chiri silicate. Inogadzirwa kubva kuzvinhu zvakasvibirira zvakadai sejecha repamusoro-soro requartz uye limestone kuburikidza nekugadzirisa kwepamusoro-kupisa kunyunguduka, fibrillation uye kutambanudza. Girazi fiber ine yakanakisa yemuviri uye makemikari zvimiro uye inoshandiswa zvakanyanya mukatikuvaka, aerospace, mota, zvemagetsi, uye simba remagetsi.
Chinhu chikuru chegirazi fiber is silicate, umo zvinhu zvikuru zviri silicon uye oksijeni. Silicate musanganiswa unoumbwa nesilicon ions uye oxygen ions ine kemikari formula SiO2. silicon chimwe chezvinhu zvakawandisa zvikuru pasi pevhu, nepo okisijeni ndiyo inonyanya kuwanda muvhu. Nokudaro, silicates, chikamu chikuru chegirazi fibers, yakawanda kwazvo paNyika.

Kugadzirira kwegirazi fiber kutanga kunoda kushandiswa kwepamusoro-kuchena zvinhu zvakasvibirira, senge quartz sand limestone. Zvinhu izvi zvakasvibiswa zvine huwandu hwakawanda hwesilicon dioxide (Si02). Munguva yekugadzirira, zvinhu zvakasvibirira zvinotanga kunyungudutswa mumvura ine girazi. Zvadaro, mvura ine girazi inotambanudzwa kuita fomu ine fibrous ne fibrillation process. Pakupedzisira, girazi rine fibrous rinotonhodzwa uye rinoporeswa kuita girazi fibers.
Girazi fiberine zvinhu zvakawanda zvakanaka. Chekutanga, ine simba repamusoro uye kuomarara kunokwanisa kupikisa masimba akadai sekunetsana, kudzvanya nekukotama. Chechipiri, girazi fiber ine yakaderera density inoita kuti chigadzirwa chireruke. Uye zvakare, girazi fiber zvakare ine yakanaka corrosion kuramba uye yakakwirira tembiricha kuramba, inogona kushandiswa kwenguva yakareba munzvimbo dzakaoma. Uye zvakare, girazi fiber zvakare ine yakanakisa magetsi ekudzivirira zvivakwa uye yakanaka acoustic zvimiro, inoshandiswa zvakanyanya mumunda wezvemagetsi uye acoustics.