Hav muaj! Raws li tus xa khoom ntawm hluav taws Retardant EPDM, Kuv feem ntau tau nug txog nws cov tshuaj lom neeg muaj pes tsawg leeg. Yog li, Kuv xav tias kuv yuav siv sijhawm los rhuav nws rau koj kom yooj yim thiab yooj yim}- nkag mus txoj kev.
Thawj zaug tawm, cia tham me ntsis txog epdm nws tus kheej. EPDM sawv rau ethylene propylene diene mones. Nws yog hom hluavtaws hluavtaws hluavtaws uas paub txog nws cov huab cua zoo heev, kub tsis kam, thiab cov hluav taws xob rwb thaiv tsev. EPDM yog ua los ntawm ethylene, propylene, thiab ib qho me me ntawm ib tug diene monomer.
Ethylene yog cov hydrocarbon nrog cov mis nyuj c₂h₄. Nws yog cov pa roj tsis muaj xim nyob ntawm chav tsev kub thiab yog ib qho tseem ceeb ntawm Petrochemicals hauv ntiaj teb. Nyob rau hauv EPDM, Ethylene muab hloov tau thiab muaj kev nruj rau cov roj hmab. Nws pab cov khoom siv EPDM kom ncab thiab khoov tsis muaj kev tawg, uas yog qhov tseem ceeb rau ntau cov ntawv thov xws li cov hnub ci foob. Cov hlua khi khi no yuav tsum tau ua raws li cov duab sib txawv thiab tiv thaiv ntau yam kev mob ib puag ncig.
Propylene, nrog cov mis cees, yog lwm hydrocarbon. Nws tseem yog cov pa roj ntawm chav sov tab sis tuaj yeem ua liquefied nyob rau hauv siab. Propylene nyob rau epdm pab txhawb rau cov khoom siv tshuaj lom neeg tsis kam thiab tsawg- kub hloov. Nws tso cai rau EPDM tswj nws cov khoom txawm nyob hauv ib puag ncig txias, uas yog qhov tseem ceeb rau kev siv sab nraum zoov.
Lub Diene monomer yog dab tsi muab epdm nws muaj peev xwm los hla -} txuas. Hla -} ntawv txuas yog zoo li tsim ib tug net- zoo li cov qauv hauv cov roj hmab, uas ua rau nws muaj zog dua thiab ntau ruaj khov. Tib cov diene monomers siv nyob rau hauv EPDM suav nrog ethylidene ib tug (enb) thiab dricyclopentadiene (DCPD). Tus ntoo khaub lig-} Txuas cov txheej txheem feem ntau nqa tawm siv cov leej faj lossis peroxide, uas ua rau cov khoom sib tw ntawm polymer.
Tam sim no, cia peb mus rau qhov cub tawg - retardant. Ua kom epdm hluav taws - retardant, peb ntxiv tej yam kuab tshuaj rau cov qauv EpDM. Ib qho ntawm feem ntau siv hluav taws - retardant additives yog aluminium hydroxide (al (Oh) ₃). Aluminium hydroxide ua haujlwm los ntawm tso dej thaum rhuab. Cov pa dej no pab kom txias cov khoom kom txias thiab ua rau cov pa roj av, ua rau nws nyuaj rau qhov hluav taws xob kis mus. Nws yog kev nyab xeeb thiab siv tau zoo uas tau siv dav hauv ntau lub cub tawg - retardant, suav nrog hluav taws retardant EPDM.
Lwm cov hluav taws nrov dua - retardant muaj ntxiv yog magnesium hydroxide (MG (Oh). Zoo ib yam li txhuas hydroxide, magrotryium hydroxide tseem yuav tso dej thaum muaj cua sov. Nws muaj qhov ntsuas kub siab dua li txhuas hydroxide, uas txhais tau tias nws tuaj yeem muab kev tiv thaiv hluav taws ntau dua. Qhov no ua rau nws haum rau cov ntawv thov uas EPDM yuav raug muab nthuav dav ntau dua cov cua sov.
Cov neeg ua kom tus neeg ua kom tus kheej (sb₂o₃) feem ntau siv hauv kev sib xyaw nrog halogenated nplaim taws. Halogenated nplaim hluav taws retardants muaj cov ntsiab lus xws li chlorine lossis bromine. Thaum cov ntaub ntawv tau hluav taws, cov nplaim taws halogenated retardant decomposes thiab tso halogen radicals. Cov radicals no muaj kev ntxhov siab nrog cov dawb radicals nyob rau hauv cov txheej txheem combustion, cuam tshuam txoj saw cuam tshuam thiab suppression hluav taws. Cov neeg ua lag luam ua lag luam ua ib tus synergist, txhim kho qhov ua tau zoo ntawm halogenated nplaim retardant.
Txawm li cas los xij, nyob rau hauv xyoo tsis ntev los no, tau muaj kev txhawj xeeb tsis ntev los no txog kev cuam tshuam ib puag ncig thiab kev noj qab haus huv ntawm halogenated nplaim retardants. Raws li qhov tshwm sim, ntau cov tuam ntxhab, nrog rau peb, nrhiav lwm txoj hauv kev, hluav taws xob hluav taws xob ntau- retardant kev daws teeb meem. Qee yam ntawm cov kev xaiv no suav nrog phosphorus - Raws li nplaim taws. Phosphorus- Raws li nplaim taws retardants ua haujlwm los ntawm kev sib sau cov txheej charing nyob rau saum npoo ntawm cov khoom thaum rhuab. Cov txheej txuas no ua raws li kev thaiv, tiv thaiv kev oxygen los ntawm kev mus txog ntawm cov khoom siv hauv qab thiab txo qhov kev sib kis hluav taws.
Ntxiv rau cov hluav taws kub - retardant additives, peb kuj ntxiv lwm yam tshuaj ua kom tau cov hluav taws kub tag nrho ntawm cov hluav taws kub- retardant EPDM. Piv txwv li, cov tshuaj antioxidants ntxiv los tiv thaiv cov roj hmab los ntawm oxidizing thiab saib tsis taus lub sijhawm. Cov tshuab yas tau siv los ua kom muaj kev hloov thiab ua haujlwm ntawm cov khoom. Thiab cov pigments yog ntxiv rau muab EPDM nws cov xim xav tau.
EPDM daim txhuam cev siv roj hmab yog lwm cov khoom uas peb muaj. Nws yog tsim los ntawm epdm nrog tus neeg sawv cev ua npuas ncauj ntxiv los tsim cov txhuam cev - zoo li qauv. Cov twj roj hmab no siv roj hmab ua kom zoo nkauj thiab feem ntau siv hauv cov ntawv thov uas yog qhov uas muag muag. Qhov hluav taws kub {{{}} retmor version ntawm EPDM daim txhuam roj hmab muaj cov tshuaj zoo ib yam li cov roj hmab zoo tib yam li cov roj hmab, tab sis nrog ntxiv ntawm cov neeg sawv cev ua npuas ncauj.
Yog li, hauv cov ntsiab lus ntawm cov hluav taws kub ntawm hluav taws - hydroxide, thiab ntau qhov hluav taws xob, lossis phosphorus {}}} Raws li nplaim taws. Tseem muaj lwm yam kev sib ntxiv zoo li cov tshuaj tiv thaiv kab mob antioxidants, cov hlua khi, thiab cov pigments los txhim kho cov khoom siv thiab tsos.
Yog tias koj nyob hauv kev ua lag luam rau high -}}} Rwb thaiv tsev EPDM cov khoom lag luam, seb nws siv lwm yam, peb nyob ntawm no los pab. Peb cov hluav taws - Retardant EPDM cov khoom lag luam yog tsim los ua kom tau cov qauv zoo tshaj plaws thiab kev nyab xeeb. Peb tau muab ntau txoj kev tshawb fawb thiab kev nthuav dav ua los tsim cov khoom lag luam no kom ntseeg tau tias lawv ua tau zoo nyob rau hauv tiag tiag- ntiaj teb daim ntawv thov.
Tsis txhob ua siab deb mus cuag peb yog tias koj muaj lus nug lossis yog koj xav yuav peb cov hluav taws kub - retardant EPDM khoom. Peb tuaj yeem muab cov qauv nrog koj, cov lus qhia tshwj xeeb, thiab cov ntaub ntawv ntsuas nqi. Cia peb pib sib tham thiab saib yuav ua li cas peb tuaj yeem ua tau raws li koj cov kev xav tau.
