Sei upfu hwegirazi fiber huchiwedzera kuomarara kwezvinhu?

Upfu hweGirazi reFiberHaisi kungozadza chete; inosimbaradza kuburikidza nekupindirana kwemuviri pachiyero chidiki. Mushure mekunyunguduka nekubuda pakupisa kwakanyanya uye kukuya kunotevera pakupisa kwakaderera, upfu hwegirazi hwefiber husina alkali (E-glass) hunoramba huine chiyero chepamusoro uye husina simba pamusoro. Hune mipendero yakaoma, asi hahuna simba uye hunogadzira network yekutsigira mu resin kana simende kana mortar matrices. Kugoverwa kwehukuru hwemamesh 150 kusvika 400 mesh kunoita kuti pave nekuchinjana pakati pekupararira kuri nyore uye simba rekunamira, kuomarara zvakanyanya kuchaita kuti pave nekugadzikana uye kutetepa zvakanyanya kuchaita kuti mutoro usashande zvakanaka. Mashandisirwo akakodzera zviri nani machira ane gloss yakawanda kana precision potting ndiwo magiredhi akanaka kwazvo, akadai se1250 glass fiber powder.

Kuwedzera kukuru kwekuomarara kwe substrate uye kuramba kupfeka negirazi powder kunobva muhunhu hwayo hwe physicochemical uye micro-mechanisms mukati mezvinhu. Kusimbiswa uku kunoitika zvikuru kuburikidza nenzira mbiri: "kusimbisa fizikisi" uye "kugadzirisa kubatana kweinterface," nemisimboti inotevera chaiyo:

Kuzadzwa Kwemuviri Kuburikidza Nekuoma Kwakanyanya Kwemukati

Upfu hwegirazi hunonyanya kuumbwa nezvinhu zvisina kugadzirwa zvakaita se silica ne borates. Mushure mekunyunguduka nekutonhorera zvakanyanya, hunoumba zvidimbu zvisina chimiro zvine kuomarara kweMohs kwe6-7, zvichipfuura zvakanyanya zvinhu zvepasi zvakaita sepurasitiki, resins, uye machira ekare (kazhinji 2-4). Kana zvakapararira zvakaenzana mukati me matrix,upfu hwegiraziinoisa "zvidimbu zvidiki-zvakaoma" zvisingaverengeki mukati mezvinhu zvese:

Aya mapoinzi akaomarara anotakura zvakananga kumanikidzwa kwekunze nekukweshana, zvichideredza kushushikana nekupfekwa kwechinhu chepasi pachacho, zvichiita se "skeleton inodzivirira kupera";

Kuvapo kwenzvimbo dzakaomarara kunodzivirira kushanduka kwepurasitiki pamusoro pechinhu chacho. Kana chinhu chekunze chikakwenya pamusoro, zvidimbu zvegirazi reupfu zvinoramba kukwenya, zvichiita kuti kuomarara kwechinhu chose kuwedzere uye kuramba kukwenya.

Maumbirwo Akaomesesa Anoderedza Kupera Kwenzira

Zvidimbu zveupfu hwegirazi zvine saizi dzakatetepa (kazhinji micrometer kusvika nanometer scale) uye zvinopararira zvakanaka, zvichizadza maburi madiki ari mu matrix kuti zvigadzire chimiro chakabatana:

Panguva yekunyunguduka kana kupwanyika, upfu hwegirazi hunoumba chikamu chinoenderera mberi ne matrix, zvichibvisa mipata pakati pechiso uye zvichideredza kupera kwenzvimbo kunokonzerwa nekuwanda kwekushushikana. Izvi zvinoita kuti pamusoro pechinhu chive chakafanana uye chinodzivirira kupera.

Kubatana pakati pechiso kunowedzera kushanda zvakanaka kwekutakura mutoro

Upfu hwegirazi hunoenderana zvakanaka nezvinhu zvematrix zvakaita seresins nemapurasitiki. Mamwe magirazi akagadziriswa pamusoro anogona kubatana nemakemikari ne matrix, zvichiita kuti pave nekubatana kwakasimba pakati pemagirazi.

Kugadzikana kwemakemikari kunodzivirira ngura yezvakatipoteredza

Upfu hwegiraziinoratidza kusashanda zvakanaka kwemakemikari, inodzivirira maasidhi, alkali, oxidation, uye kukwegura. Inoramba ichishanda zvakanaka munzvimbo dzakaoma (semuenzaniso, panze, munzvimbo dzemakemikari):

Inodzivirira kukuvara kwechimiro pamusoro pevhu nekuda kwengura yemakemikari, ichichengetedza kuomarara uye kuramba kupfeka;

Kunyanya muzvipfeko neinki, girazi reupfu hweUV rinodzivisa kupisa kwakanyorova uye rinodzivisa kukwegura kunonoka kuora kweganda, zvichiita kuti rirambe richireba kwenguva refu.