Nekufambira mberi kwehunyanzvi uye kusimukira kwemitambo yekunze, matafura ekupeta epurasitiki ave kuuya mukuona kwevanhu zvishoma nezvishoma.Yakahwina kufarirwa nevanhu nekuda kwevhoriyamu yayo yakanyanya kudiki, huremu huremu uye kushandiswa kuri nyore mushure mekupeta.Tafura yekupeta inoumbwa nepaneru uye furemu.Nhasi ndichasuma zvinhu zvefurafura yekupeta.
High-density polyethylene (HDPE), hupfu chena kana granular chigadzirwa.Isiri-chepfu, isina kunaka, crystallinity ye80% kusvika 90%, kupfava kwe125 kusvika 135°C, tembiricha yebasa inosvika 100°C;kuoma, kusimba simba uye zvinokambaira zviri nani pane yakaderera density polyethylene;kupfeka kupikisa, magetsi Kuchengetedza kwakanaka, kusimba uye kudzivirira kutonhora;yakanaka kugadzikana kwemakemikari, isinganyungudika mune chero organic solvents pakamuri tembiricha, ngura inopesana neasidhi, alkali uye akasiyana munyu;iyo firimu ine yakaderera permeability kumhute yemvura nemhepo, uye kunyura kwemvura Yakaderera;kushomeka kusakara kwekuchembera, kushushikana kwezvakatipoteredza kuputsa kuramba hakuna kunaka seyakaderera-density polyethylene, kunyanya kupisa kwemafuta kunoderedza kushanda kwayo, saka antioxidants uye ultraviolet absorbers inofanira kuwedzerwa kune resin kuvandudza kushomeka uku.High-density polyethylene firimu ine yakaderera kupisa kupisa kunokanganisa tembiricha pasi pekunetseka, saka kutarisirwa kunofanira kutorwa paunenge uchiishandisa.
Muzana rino remakore, kufambira mberi kwechimurenga kwakaitika mumunda wepombi, ndiko kuti, "kutsiva simbi nepurasitiki".Nekukurumidza kufambira mberi kwepolymer material sainzi uye tekinoroji, kudzika kwekusimudzira uye kushandiswa kwepombi dzepurasitiki, uye nekuenderera mberi kwekuvandudza tekinoroji yekugadzira, pombi dzepurasitiki dzakaratidza zvizere kuita kwavo kwakanaka.Nhasi, pombi dzepurasitiki hadzichakanganiswi ne“zvinotsiva zvakachipa” zvepombi dzesimbi.Mukuchinja uku, mapaipi e polyethylene anofarirwa uye ari kuwedzera kupenya zvakajeka.Iwo anoshandiswa zvakanyanya mukufambiswa kwegasi, kugovera mvura, kugezesa tsvina, kudiridza kwekurima, yakanaka chidimbu chekufambisa mumigodhi, pamwe neminda yemafuta, makemikari, posvo uye nharembozha, nezvimwe, kunyanya muminda senge Yakashandiswa zvakanyanya mumigodhi. kutakura gasi.
HDPE ndeye thermoplastic polyolefin inogadzirwa necopolymerization ye ethylene.Kunyangwe HDPE yakaunzwa muna 1956, purasitiki haisati yasvika padanho rekukura.Izvi zvinhu zvakasiyana-siyana zvinogara zvichigadzira kushandiswa kutsva uye misika.High-density ethylene chinhu chine hushamwari kwezvakatipoteredza chinogona kudzokororwa uye kushandiswa zvakare kana chapiswa kusvika pakunyungudika kwayo.
High-density polyethylene ine yakanaka yekudzivirira kupisa uye kutonhora kutonhora, yakanaka kugadzikana kwekemikari, kusimba kwepamusoro uye kusimba, uye yakanaka mechanical simba.Dielectric zvivakwa, kwezvakatipoteredza kusagadzikana kupwanya kuramba zvakare kwakanaka.Kuoma, kusimba simba uye zvinokambaira zviri nani pane yakaderera-density polyethylene;kupfeka kupikisa, kuvharwa kwemagetsi, kuoma uye kutonhora kwekudzivirira zviri nani, asi zvishoma zvakanyanya kudarika kudzika-density insulation;kugadzikana kwemakemikari kwakanaka, pakupisa kwekamuri Pasi pemamwe mamiriro ezvinhu, haigadziriswi mune chero organic solvent, inopesana neasidhi, alkali uye munyu wakasiyana-siyana;iyo firimu ine yakaderera permeability kumhute yemvura uye mhepo, uye yakaderera mvura inotorwa;kushomeka kusakara kuchembera, kuputika kwezvakatipoteredza kuramba hakuna kunaka seyakaderera-density polyethylene, Kunyanya, thermal oxidation inoderedza kushanda kwayo.Naizvozvo, resin inoda kuwedzerwa ne antioxidants uye ultraviolet absorbers kuvandudza kushomeka uku.High-density polyethylene firimu ine yakaderera kupisa kupisa kunokanganisa tembiricha pasi pekunetseka, iyo inofanirwa kutariswa pairi pairi kushandisa.
Nguva yekutumira: Jan-17-2023