Silica gel rudzi rwezvinhu zvinoshandisa mvura zvakanyanya.
Chinhu chisina chimiro uye fomura yaro yemakemikari ndeye mSiO2.nH2O. Inosangana nechiyero chemakemikari cheChinese HG/T2765-2005. Ichinhu chisina kugadzirwa chakatenderwa neFDA chinogona kusangana zvakananga nechikafu nemishonga. Silica gel ine kugona kwakasimba kwe hygroscopic, kushanda kwakasimba kwe adsorption, kunyangwe silica gel desiccant ikanyudzwa mumvura zvizere, haizonyorove kana kunyungudutsa. Ine hunhu hwekusava nehupfu, kuravira, kusaora uye kusasvibisa, saka inogona kusangana zvakananga nechero chinhu. Zvinhu zvinofanirwa kugadzirwa kuti igadzire silica gel ndeizvi: sodium silicate (paucine, water glass), sulfuric acid.
Kutanga, alkali neasidhi zvinogadzirwa pachine nguva, uye ipapo sodium silicate yakasimba inonyungudutswa pakupisa kwakanyanya uye inoseferwa kuti igadzirire huwandu hwakati hwemvura, uye ipapo sulfuric acid inogadzirwa kusvika huwandu hwakati hwemvura, huwandu hwesulfuric acid i20%.
Chechipiri, danho rechipiri kugadzira guruu (gel granulation), danho iri ndiro rakakosha zvikuru, mushonga we bubble lye wakagadziriswa kare uye sulfuric acid solution pasi pemamiriro chaiwo, kuitira kuti pave ne gel solution inonyunguduka, mushure mekusvika pakuwanda kwakakodzera ichava gel particles. Chimiro nehukuru hwe gel particles zvinogona kutsanangurwa zvizere zvichienderana nezvinodiwa nemushandisi uye kugona kwekugadzira. Nzira yakajairika ye gel granulation ndeye air granulation, uye acid-base ratio, concentration, tembiricha uye gel granulation nguva inoshandiswa mu gel granulation process ndiyo specific technical parameters.
Chechitatu, gel yekukwegura inofanira kupfuura nenguva yakati uye tembiricha, pamwe nePH kukosha kwayo kusvika pakukura, zvichiita kuti skeleton yegel isimbe, glue condensation pakati pezvikamu panguva yekukwegura kuti igadzire Si-O-Si bonds, kuwedzera simba reskeleton, zvikamu zviri pedyo, kuderedza nzvimbo muchimiro chegrid, uye mvura iri mairi inosvinwa.
Kusukira, kusuka, kugeza glue Kusukira, kusuka, kugeza glue zvakare idanho rakakosha mukuita izvi, nekuti Na2SO4 inoumbwa ne granular gel inosukirwa. Dzora anion yega yega iri mukati mehuwandu hunodiwa nekuita izvi. Zvinogona kutaurwa kuti chikamu chikuru chehunhu hwemaburi e silica gel yakapedzwa chinoenderana nekukwegura kwemaitiro ekuwachisa rabha, uye mwero wekukwegura kwemaitiro aya unoenderana nekushanda kwemaitiro ekuwachisa, kuwachisa, uye kuwachisa rabha.
Chechishanu, kuomesa, hydrogel yakagadzirwa (mushure mekusukwa) mukamuri rekuomesa, mumamiriro ezvinhu chaiwo kuderedza huwandu hwemvura mugel pachayo ichioma kusvika padanho rinodiwa. Kana tembiricha yekuomesa yakakwira, mwero wekuunganidzwa kwezvikamu zvekutanga wepamusoro uye aperture yakakura.
Nhanhatu, kuongorora, muchina wekusarudza bhora uchaomeswa mushure mekunge silicone yabviswa nechidzitiro chezvivharo zvakasiyana zvichienderana nehukuru hwechinhu, uye panguva imwe chete ichaputswa kuongorora silica gel.
Nomwe, kusarudza guruu: silica gel iri mubhora reheterochromatic, tsvina inobviswa wobva washandisa bepa recomposite zvichienderana nezvinodiwa zvepakeji, mushure mekuivhara. Mushure mematanho ari pamusoro apa, chigadzirwa chesilicone chinogadzirwa.
Nguva yekutumira: Mbudzi-14-2023
