Flame Retardants: Yechipiri Yakakura Rubber uye Plastic additives
Flame retardantchinhu chinobatsira chinoshandiswa kudzivirira zvinhu kubva pakubatidzwa uye kurambidza kupararira kwemoto. Inonyanya kushandiswa mune polymer zvinhu. Nekushandiswa kwakakura kwezvinhu zvekugadzira uye kuvandudzwa zvishoma nezvishoma kwezviyero zvekudzivirira moto, zvinodzoreredza murazvo zvinoshandiswa zvakanyanya mumapurasitiki, rabha, machira, nezvimwe. Zvinoenderana neakanyanya kukosha emakemikari zvinhu muFR, inogona kukamurwa muzvikamu zvitatu: inorganic flame. retardants, organic halogenated flame retardants uye organic phosphorus flame retardants.
Inorganic flame retardantsinoshanda mumuviri, iyo ine yakaderera kushanda uye yakawanda yekuwedzera. Iine chimwe chinokanganisa pakushanda kwezvinhu. Zvisinei, nekuda kwemutengo wakaderera unogona kushandiswa muzvigadzirwa zvakaderera nezvinodiwa zvishoma zvekushanda, zvakadai seplastiki PE, PVC, etc. Tora aluminium hydroxide (ATH) semuenzaniso.Ichapera kupera uye kupera mushure mekupisa. kusvika ku200 ℃. Iyo decomposition process inobata kupisa uye kubuda kwemvura, kuitira kuti inhibit tembiricha kukwira kwezvinhu, kuderedza tembiricha yechinhu chepamusoro, inonoke kukurumidza kwekupisa kwekuputika kuita. Panguva imwecheteyo, mhute yemvura inogona kuderedza huwandu hweokisijeni uye kudzivirira kupisa.Iyo alumina inogadzirwa nekuparara inosungirirwa kune zvinhu zvepasi, izvo zvinogona kuwedzera kudzivisa kupararira kwemoto.
Organic halogen flame retardantskunyanya kutora nzira yemakemikari. Kushanda kwayo kwakakwira uye yekuwedzera ndeye samll nekuenderana kwakanaka nemapolymers. Izvo zvinoshandiswa zvakanyanya mumagetsi castings, akadhindwa edunhu mabhodhi uye zvimwe zvikamu zvemagetsi. Nekudaro, ivo vanozoburitsa muchetura uye corrosive magasi, ane kumwe kuchengetedza uye kuchengetedza kwezvakatipoteredza matambudziko.Brominated flame retardants (BFRs)anonyanya mutsa halogenated flame retardants. Imwe yachochloro-series fire retardants (CFRs). Kupisa kwavo kwekuparara kwakafanana neye polymer zvinhu. Kana mapolymer achipisa uye akaora, maBFR anotangawo kuora, pinda munzvimbo yekupisa gasi pamwe chete nemafuta ekuora zvigadzirwa, inhibisa maitiro uye kudzivirira kupararira kwemoto. Panguva imwecheteyo, iyo gasi yakasunungurwa inovhara pamusoro pezvinhu kuti ivhare uye ideredze huwandu hweokisijeni, uye pakupedzisira inoderedza kupisa kwemoto kusvikira yapera. Mukuwedzera, BFRs inowanzoshandiswa pamwe chete ne antimony oxide (ATO). ATO pachayo haina kudzoreredza murazvo, asi inogona kuita sechinhu chinokonzeresa kukurumidza kuora kwebromine kana chlorine.
Organic phosphorus flame retardants (OPFRs)inoshanda zvese mumuviri uye nemakemikari, nehunyanzvi hwepamusoro uye zvakanakira zvehupfu hwakaderera, kusimba uye kudhura kwekuita. Mukuwedzera, inogonawo kuvandudza kushandiswa kwemvura yealloy, kupa plasticizing basa uye kushanda kwakanakisisa.Nepamusoro pezvinodiwa zvekuchengetedzwa kwezvakatipoteredza, OPFRs zvishoma nezvishoma inotsiva BFRs sezvigadzirwa zvemazuva ose.
Kunyangwe kuwedzera kweFR kusingakwanise kuita kuti zvinhu zvirambe moto, zvinogona kunyatso kudzivirira "flash burn" chiitiko, kuderedza kuitika kwemoto uye kuhwina yakakosha nguva yekupukunyuka kune vanhu vari munzvimbo yemoto. Kusimbaradzwa kwezvinodiwa nenyika zvetekinoroji inodzoreredza moto inoitawo kuti tarisiro yebudiriro yeFRs iwedzere kuwanda.
Nguva yekutumira: Nov-19-2021