Classification yePolyethylene
Classification ye polyethylene
Polyethylene yakakamurwa kuita yakakwira density polyethylene (HDPE), yakaderera density polyethylene (LDPE) uye mutsara yakaderera density polyethylene (LLDPE) zvinoenderana nepolymerization nzira, molecular huremu uye cheni chimiro.
LDPE
Zvivakwa: isingaravike, isinganhuhwi, isina muchetura, yakagomara pasi, mukaka chena waxy zvimedu, density inosvika 0.920 g/cm3, nzvimbo yekunyungudika 130℃～145℃. Isinganyungudika mumvura, inonyungudika zvishoma mumahydrocarboni, nezvimwewo. Inogona kutsungirira kukukurwa kweasidhi yakawanda uye alkali, ine kunyura kwemvura yakaderera, inogona kuramba ichichinjika pane tembiricha yakaderera, uye ine yakakwirira magetsi ekudzivirira.
Production Process:
Iko kune kunyanya maviri marudzi e-high-pressure tube nzira uye kettle nzira. Kuti uderedze tembiricha yekuita uye kudzvanywa, iyo tubular process generally inotora yakaderera-yepamusoro-yekuita basa initiator kuti itange iyo polymerization system, yakakwirira-kuchena ethylene inoshandiswa seyakanyanya mbishi zvinhu, propylene, propane, nezvimwewo zvinoshandiswa se density adjusters. Iyo polymerization yakaitwa pasi pemamiriro e330 ° C uye 150-300MPa. Iyo polymer yakanyungudutswa inotanga polymerization mu reactor inofanira kutonhodzwa uye kuparadzaniswa nepamusoro-soro, simba repakati uye pasi pasi. Mushure mekupatsanurwa, inotumirwa kune inopinza ye-high-pressure (30 MPa) compressor, nepo iyo yakaderera-inotenderera gasi inotonhorera uye inoparadzaniswa uye inotumirwa kune yakaderera-kudzvanywa (0.5 MPa) compressor yekudzokorodza, nepo polyethylene yakanyungudutswa. inotumirwa kune granulator mushure mekumanikidzwa kwepamusoro uye kuderera-kuparadzana. Kune granulation mumvura, panguva yegranulation, mabhizinesi anogona kuwedzera akakodzera ekuwedzera zvinoenderana neakasiyana masimisheni ekushandisa, uye magranules anoiswa uye anotumirwa.
Shandisa:
Maitiro ekugadziridza akadai sejekiseni kuumba, extrusion molding, uye blowing molding inogona kushandiswa. Inonyanya kushandiswa seAgricultural firimu, firimu rekurongedza maindasitiri, firimu remishonga uye chikafu chekuisa chikafu, mekiniki zvikamu, zvinodikanwa zvezuva nezuva, zvekuvakisa, waya, tambo yekuvharisa, kukoira uye pepa rekugadzira.
LLDPE
Zvivakwa: Nekuti mamorekuru zvimiro zveLLDPE neLDPE zviri pachena zvakasiyana, zvivakwa zvacho zvakasiyana. Kana ichienzaniswa neLDPE, LLDPE ine yakanakisa kushushikana kwemamiriro ekunze kutsemuka kuramba uye kuvharwa kwemagetsi, kukwira kwekushisa kwekudzivirira, kupikisa kupikisa uye kuramba.
Production Process:
LLDPE resin inonyanya kugadzirwa neakazara density polyethylene michina, uye anomiririra ekugadzira maitiro ndeyeInnovene maitiro uye UCC's Unipol maitiro.
Shandisa:
Kuburikidza nekuumbwa kwejekiseni, extrusion, kuvhuvhuta uye dzimwe nzira dzekuumba, kugadzirwa kwemafirimu, zvinodikanwa zvezuva nezuva, mapaipi, waya uye tambo, nezvimwe.
HDPE
Zvivakwa: Natural, cylindrical kana oblate particles, akatsetseka zvimedu, particle size inofanira kuva 2 mm ~ 5 mm mune chero nzira, hapana tsvina yemagetsi, thermoplastic. Iyo poda ihupfu chena, uye chigadzirwa chakakodzera chinobvumirwa kuva nechero shoma ruvara. Hainyungudike muzvinonyungudutsa zvakajairika patembiricha yekamuri, asi inogona kuzvimba mualiphatic hydrocarbons, anonhuwirira hydrocarbons uye halogenated hydrocarbons kana yabatwa kwenguva yakareba, uye inonyungudika zvishoma mutoluene uye acetic acid patembiricha iri pamusoro pe70 °C. Oxidation inoitika kana inopisa mumhepo uye pasi pesimba rechiedza chezuva. Kudzivirira kune yakawanda acid uye alkali erosion. Iyo ine yakaderera mvura yekunyura, inogona kuramba ichichinjika payakadzika tembiricha, uye ine yakakwirira magetsi ekudzivirira.
Production Process:
Maitiro maviri ekugadzira anogamuchirwa: gasi chikamu nzira uye slurry nzira.
Shandisa:
Kushandisa jekiseni kuumba, kuvhuvhuta kuumba, extrusion molding, rotomolding uye dzimwe nzira dzekuumba kugadzira zvigadzirwa zvemafirimu, zvinodiwa zvezuva nezuva uye kushandiswa kwemaindasitiri kwemasaizi akasiyana emidziyo isina mhango, pombi, matepi ekarenda uye tie matepi ekurongedza, tambo, mambure ekuredza uye akarukwa fiber, Waya netambo nezvimwe.
Classification yePolyethylene