Lub Cev Hnyav Hnyav Polyethylene: Ultra Siab Molecular Hnyav Polyethylene, Siab Ntom Ntom UHRPE PE-1000 Thiab Hnyav Hnyav Molecular

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2023-12-16 05:41

Lub cev hnyav hnyav polyethylene (PE-500) hu ua yas polymer. Nws muaj cov lej tshwj xeeb ntawm lub cev thiab tshuaj lom neeg, uas ua rau nws haum rau siv nyob rau qhov xwm txheej hnyav. Hauv kab lus no, peb yuav txiav txim siab txhua yam hais txog qhov hnyav molecular hnyav polyethylene.

Nws yog dab tsi?

Cov khoom siv no yog ib yam ntawm cov yas yas polymerized ethylene. Nws cov yam ntxwv yog elongated linear molecular bonds taw qhia hauv tib qho kev coj. Cov kab hluav taws xob zoo li no tau txawv los ntawm kev nkag siab zoo thiab hloov pauv ntawm cov khoom thauj.

Hauv qhov tsos, siab hnyav hnyav polyethylene zoo li yas . Nws yog khoom, tsis muaj ntxhiab, thiab tsis muaj tshuaj lom. Cov khoom siv yog tsim los ntawm kev sib xyaw ntawm ethylene thiab metallocene catalysts hauv cov nroj tsuag qis. Hauv theem tsim khoom, xim tau ntxiv rau cov khoom siv raw kom muab cov xim polymerized ethylene.

Cov tuam txhab tsim khoom kuj tseem tsim cov khoom hnyav hnyav heev (hnyav tshaj qhov hnyav hnyav) polymer nrog lub cev hnyav ntau dua 10,000,000 units. (PE-1000) . Hais txog cov yam ntxwv muaj zog, nws yog ob peb zaug zoo dua rau qee qib ntawm cov pa roj carbon thiab cov hlau tsis xeb.

Qhov zoo thiab qhov tsis zoo

Cov khoom siv muaj tus lej tseem ceeb zoo. Qhov zoo tshaj yog raws li hauv qab no:

• zoo heev tsis kam hnav thiab txhuam cov neeg kho tshuab; kev kub ceev polymer muaj siab tej yam kuj;
• tiv taus kev tawg, chips thiab lwm yam kev hloov pauv;
• tiv taus qhov hloov pauv ntawm qhov kub, vim tias cov khoom raug tso cai ua haujlwm ob qho tib si ntawm qhov siab tshaj thiab qhov ntsuas kub tsawg kawg nkaus;
• tiv taus cov dej noo thiab cov tshuaj txhoj puab heev (tshwj tsis yog oxidants); cov yam ntxwv no tau ua tiav vim tsis muaj amides, esters lossis hydroxyl pawg hauv cov khoom, uas ua rau muaj tshuaj lom rau tshuaj lom;
• tiv taus hluav taws xob hnub ci;
• cov khoom tu cev zoo - cov khoom tsis raug cuam tshuam los ntawm cov kab mob pathogenic; fungus thiab pwm tsis tsim rau nws;
• hluav taws xob zoo insulating thiab muaj peev xwm dielectric;
• PE-500 polyethylene muaj kev sib txuas tau zoo heev;
• hluav taws xob ua haujlwm.

Qhov tsis zoo ntawm cov khoom suav nrog nws cov ntsiab lus melting qis (tsis ntau tshaj + 150 ° C), uas yog vim li cas nws thiaj pom zoo kom ua haujlwm cov polymer ntawm qhov kub tsis tshaj +100 degrees.

Lub cev hnyav hnyav polyethylene yog qhov tshiab . Nws yog tsim los ntawm 2 kev lag luam hauv tsev (Tomskneftekhim thiab Kazanorgsintez). Kev tsim khoom thev naus laus zis yog qhov nyuaj thiab kim, uas cuam tshuam rau tus nqi ntawm cov khoom tiav.

Cov khoom siv thiab yam ntxwv

Lub zog muaj zog polyethylene muaj cov saw ntev molecular uas yuav luag zoo ib yam. Cov yam ntxwv zoo li no muab lub zog ntsuas siab. Txawm li cas los xij, cov nyiaj tsis muaj zog tshwm sim ntawm qee cov qauv, uas yog vim li cas cov khoom siv tsis tuaj yeem hu ua cua sov-tiv taus. Nws qhov kub ua haujlwm nce mus txog + 100 ° C. Nrog rau qhov ntsuas kub nce ntxiv mus rau +140 degrees, cov polymer yaj thiab hloov mus ua qhov khov.

Polymer PE-1000 muaj cov yam ntxwv hauv qab no:

• nqus dej - 0.01-0.05%;
• lub ntiajteb txawj nqus tshwj xeeb - 0, 93-0, 94 g / cm³;
• modulus flexural - tsis ntau tshaj 1 GPa;
• coefficient ntawm kev sib txhuam - txog 0, 1;
• cuam tshuam lub zog coefficient - 160-170 kJ / m²;
• khoov elongation - 8-10%;
• tiv thaiv saum npoo - 1014 ohms.

Cov khoom raug cais raws li ib txwm nplaim taws. Thaum ua haujlwm, nws tsis tso cov tshuaj phem rau hauv ib puag ncig.

Txheej txheem txheej txheem

Lub cev hnyav hnyav polyethylene tau tsim raws li cov qauv sib xws rau GOST 16338-85. Kev tsim khoom siv cov txheej txheem ntawm ethylene synthesis nyob rau hauv kev cuam tshuam ntawm metallocene catalysts. Tam sim no, muaj ntau txoj hauv kev paub txog kev ua cov polymer.

Sintering thiab kub nias

Ua tsaug rau cov txheej txheem no, cov ntawv loj monolithic polyethylene, cov phaj thiab lub tog raj kheej tau txais. Hauv cov txheej txheem ntawm kev ua haujlwm ntxiv, cov phiaj xwm phiaj xwm thiab ntau yam txheej txheem rau cov cuab yeej tau txais los ntawm lawv. Cov thev naus laus zis tsim khoom cuam tshuam txias txias ntawm cov hmoov polymer rau hauv qhov khoob thiab lawv cov kev sib txuas tom ntej ntawm qhov kub ntawm +200 degrees . Raws li kev kho cua sov, cov khoom lag luam ib nrab tau txais - monoliths, phaj thiab thaiv.

Plunger extrusion

Cov txheej txheem tsim khoom muaj nyob rau hauv yaj cov khoom noj ntawm qhov kub thiab txias mus rau homogeneous rubbery mass. Los ntawm nws, siv cov chav tshwj xeeb nrog lub taub hau, pas nrig, kav dej lossis kab xev ntawm ntau qhov ntev tau nyem tawm.

Gel tig

Cov cuab yeej tsim khoom suav nrog ntau theem: ua kom cov khoom siv zom zaws hauv cov roj paraffin thiab yuam cov txiaj ntsig los ntawm cov qhov nyias mus rau hauv dej. Raws li qhov tshwm sim, cov xov paj tau txais, uas tom qab raug rho tawm hauv cov khoom siv hluav taws xob nrog kev teeb duab tib lub sijhawm thiab tshem tawm cov tshuaj hnyav. Thaum ua tiav los ntawm kev sib tw gel, tau txais lub zog zoo tshaj plaws.

Txoj kev ua tom kawg yog nrov dua.

Cov ntawv thov

Vim nws cov yam ntxwv tshwj xeeb, lub cev hnyav hnyav polyethylene tau siv hauv ntau qhov chaw. Nws feem ntau yog siv los ua qhov sib piv, hloov ntau yam hlau tsis muaj hlau, hlau hlau siab thiab lwm yam khoom siv.

Hauv tshuaj

Ultra-muaj zog polymer tau siv rau kev tsim cov cog cog txij xyoo 1962. Niaj hnub no, nws tau siv los ua cov pob txha taub hau rau pob qij txha hauv kev phais thiab kev cog hniav hauv hniav. Cov khoom siv los tsim ntau yam khoom siv orthopedic.

Hauv kev lag luam tshuaj lom neeg, zaub mov thiab lub teeb

Cov khoom siv yog siv rau kev tsim cov khoom siv thiab cov khoom siv rau kev tsim khoom noj, ntim rau khaws cia thiab thauj cov tshuaj lom hnyav, fwj tshuaj pleev ib ce, thoob dej, tso tsheb hlau luam.

Hauv kev lag luam tub rog

Muaj zog polymer fiber ntau tau siv rau kev tsim cov khoom siv tiv thaiv tus kheej rau cov neeg ua haujlwm ruaj ntseg. Tshwj xeeb, lub tsho tiv thaiv mos txwv thiab lub kaus mom hlau yog ua los ntawm lawv. Cov cuab yeej ua tau zoo yog qhov hnyav, tab sis tib lub sijhawm nws ntseeg tau tiv thaiv cov mos txwv qhov txhab . Thiab tseem nrog kev pab los ntawm cov tshuaj polymer no, cov cuab yeej tshwj xeeb yog cov phom.

Hauv kev tsim kho tshuab

Lub zog muaj zog polyethylene yog siv rau kev tsim cov khoom seem uas ua haujlwm hauv hydraulic lossis roj ib puag ncig. Nws yog siv los tsim cov kabmob, hav txwv yeem, hav txwv yeem, lub zog - ntu uas raug rau qib siab ntawm cov khoom siv puas. Cov khoom seem rau kev teeb tsa pneumatic nrog kev ua haujlwm siab ntxiv tau ua los ntawm cov khoom hnyav polymer PE-1000.

Cov khoom ua si thiab khoom siv

Cov khoom siv yog siv hauv kev tsim cov khaub ncaws hnav, khaub ncaws hnav nce toj, caij ski, snowboards.

Cov khoom siv ntau heev yog tsim los ntawm lub zog polymer siab . Cov no suav nrog cov khoom lag luam rau cov paj ntoo thiab cov khoom siv hauv chav dej, khoom siv hauv tsev thiab khoom siv hauv vaj. Nws yog siv rau kev tsim cov rooj tog zaum, menyuam cov khoom ua si, chav dej hauv xov tooj, thiab khoom siv rau kev npaj chaw ua si rau menyuam yaus.