High density low pressure polyethylene: yam ntxwv, piav qhia, daim ntawv thov

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

High density polyethylene - yog dab tsi? Tsis tshua muaj siab polyethylene (HDPE luv luv) thiab siab ceev yog ib yam khoom uas belongs rau cov pab pawg neeg ntawm thermoplastic polymers. Cov khoom siv raw no txawv ntawm qhov zoo xws li lub zog, ductility thiab durability. Vim nws cov khoom zoo, hom khoom no tau pom nws daim ntawv thov hauv kev tsim ntau yam khoom.

Khoom piav qhia

High density low pressure polyethylene yog ib yam khoom uas tau los ntawm polymerization ntawm ethylene hydrocarbon. Nws hloov tawm ntawm qhov tsis tshua muaj siab, yog li lub npe. Ntau yam tshuaj yuav koom nrog hauv cov txheej txheem, thiab qhov kub thiab txias kuj tseem tuaj yeem hloov pauv. Los ntawm kev hloov cov yam ntxwv no, koj tuaj yeem tau txais HDPE nrog qhov sib txawv.

Dhau li ntawd, lawv yuav txawv ntawm qee yam khoom. Thaum lub sij hawm tsim khoom, high-density low-pressure polyethylene yog cim, raws li qhov siab tshaj plawsIndex PE-80 lossis PE-100. Qhov sib txawv ntawm cov hom no tsis tseem ceeb, tab sis nws yog. Qhov txawv yog nyob rau hauv cov nram qab no tsis:

• Hardness.
• Tua kua muag thiab lub zog tensile.
• Resistant rau txhua yam kev puas tsuaj, nrog rau deformations.
• Kub qhov khoom tuaj yeem ua haujlwm, thiab lwm yam

qauv khoom

Txawm hais tias siv tshuab dab tsi rau kev tsim khoom, lub siab ntom ntom polyethylene yuav ib txwm muaj cov qauv sab hauv. Hauv lwm lo lus, cov qauv ntawm cov khoom no yuav muaj cov polymeric macromolecules nrog ntau daim ntawv cog lus. Tseem yuav muaj random intermolecular bonds.

Nws yog ib qho tseem ceeb uas yuav tsum tau ntxiv ntawm no tias tus nqi ntawm cov khoom tiav ntawm hom no tsawg heev. Qhov tshaj plaws yog tias kev tsim khoom siv qhov chaw ntawm cov khoom siv uas tsis kim heev, cov khoom siv raw rau qhov no kuj yuav tsum pheej yig, thiab pab pawg neeg ua haujlwm, uas tsuas muaj txog li ob lub kaum os tus neeg, tuaj yeem tswj xyuas cov cuab yeej thiab saib xyuas cov khoom siv. txheej txheem. Piv txwv li, ib lub rooj cob qhia txaus los ua tiav cov kav dej HDPE.

Key Features

Hauv kev tsim cov khoom no, txhua tus neeg tsim khoom yuav tsum tau coj los ntawm lub xeev cov qauv ntaub ntawv 16338-85. Cov ntaub ntawv no muaj tag nrho cov kev cai yooj yim uas cov khoom tiav yuav tsum tau ua. Ntawm cov nta no yog cov hauv qab noOptions:

• Qhov ntom ntawm cov yeeb yaj kiab tiav yuav tsum nyob nruab nrab ntawm 930 txog 970 kg/m3.
• Cov khoom pib yaj ntawm qhov kub ntawm +125-135 degrees Celsius.
• Qhov ntsuas kub tsawg kawg nkaus uas cov khoom yuav tsis yooj yim li ua tau yog -60 degrees Celsius.
• Tear thiab tensile lub zog yuav tsum ncav cuag 20-50 MPa.
• Cov khoom yuav tsum siv sijhawm li 100 xyoo kom decompose ib txwm.
• Yog tias tag nrho cov kev cai tsim khoom raug ua raws, cov yam ntxwv ntawm cov khoom siv hluav taws xob tsawg tso cai rau siv los ntawm 50 txog 70 xyoo lossis ntau dua.

Ntaus ntau hom

Cov hom yooj yim ntawm ND polyethylene yog tsim los ntawm cov hmoov hmoov. Cov khoom sib xyaw ntawm cov khoom no tuaj yeem muab rau hauv daim ntawv ntawm cov xim dawb lossis tsis muaj xim granules. Granular hom raw cov ntaub ntawv, uas yog tom qab siv los tsim cov khoom sib txawv, yuav tsum muaj qhov ntau thiab tsawg ntawm 2 mus rau 5 mm inch, thaum lawv cov duab yuav tsum zoo tib yam. Cov khoom ntau yam yuav txawv. Nws tuaj yeem yog qib siab, thawj lossis qib thib ob.

Lub siab polyethylene, nws yog dab tsi? Qhov no yog cov khoom siv raw, siv qhov twg, nws muaj peev xwm kom tau txais cov khoom muaj zog txaus thiab cov khoom. Cov khoom no tuaj yeem pom txawm tias nws tau ua rau hauv cov yeeb yaj kiab nyias.

Qhov kev ua tau zoo tshaj plaws ntawm HDPE (raws li chemistry thiab physics) yog lub zog tensile, uas yog kwv yees li 20 txog 50 MPa. Qhov thib ob cov khoom zoo tshaj plaws yog elongation, uas nyob ntawm 700 txog 1000%. Cov tsos ntawm zaj duab xis no txausinconspicuous, nws yog ib qho nyuaj, thiab thaum kov tsim ib rustling. Cov qauv saum npoo du feem ntau tsis khaws cia.

Yog tias tag nrho cov kev qhia tshwj xeeb raws li GOST 16338-85 rau polyethylene low-density tau ntsib, ces cov khoom no muaj qhov zoo hauv qab no:

• Raws li qhov ntsuas kub, muaj kev tiv thaiv siab rau kev tawg / khawb, thiab lwm yam.
• Tshuaj lom neeg tsis muaj zog, uas tshwm sim nws tus kheej hauv qhov tseeb tias zaj duab xis tsis ntshai ntawm kev raug tshuaj lom neeg, nrog rau cov kab mob.
• Resistant rau hluav taws xob hluav taws xob, kev ua haujlwm zoo heev thiab ua lub dielectric.
• Tej zaum yuav yog ib qho zoo insulator rau kua lossis gaseous media.
• Rau tib neeg, nrog rau ib puag ncig, cov khoom siv muaj kev nyab xeeb tag, tsis muaj tshuaj lom.

Nws yog ib qho tsim nyog sau cia tias cov high-density low-pressure polyethylene raws li GOST 16338-85, vim nws cov khoom, tuaj yeem siv rau cov dej tsis zoo, ua cov khoom siv raw rau kev tsim cov kav dej. Vim nws inertness mus rau ntau ib puag ncig Cheebtsam, polyethylene yog zoo meej raws li ib tug pib khoom rau zus tau tej cov ntim khoom siv los ua accumulators ntawm ib puag ncig tej yam teeb meem.

Neegative properties

Zoo li lwm yam khoom siv, HDPE tsis muaj qhov tsis zoo. Cov khoom no belongs rau cov pab pawg neeg ntawm polymers-thermoplastics, uas, txawm tias tag nrho lawv lub zog thiab kev ua haujlwm zoo rau ntau yam kev cuam tshuam tsis zoo, muaj cov yam ntxwv tsis zoo hauv qab no:

• Yog tias qhov kub siab tshaj qhov kev tso cai, ces cov khoom yuav pib yaj sai sai.
• Cov ntaub ntawv nyoos yog qhov ua rau muaj kev laus yog tas li raug tshav ntuj, uas yog nplua nuj nyob rau hauv ultraviolet lub teeb.

Txawm hais tias nws yuav yog qhov ncaj ncees kom nco ntsoov ntawm no tias qhov kawg qhov tsis zoo tuaj yeem raug tshem tawm yog tias cov txheej tshwj xeeb siv rau cov qauv polyethylene. Tsis tas li ntawd, muaj kev ua haujlwm uas tau ua nyob rau theem ntawm kev tsim cov khoom. Cov tshuaj tiv thaiv tau nkag mus rau hauv cov qauv ntawm cov tshuaj tiv thaiv kev laus.

Snolen - high density low pressure polyethylene

Snolen yog hom HDPE, uas yog tsim los ntawm cov lag luam xws li OAO Gazprom Neftekhim Salavat. Lub tuam txhab yog ib qhov loj tshaj plaws nyob rau hauv Russia.

Cov yam ntxwv tseem ceeb ntawm cov khoom tsim los ntawm lub tuam txhab no yog raws li hauv qab no:

• High resistance to ntsev, alkalis, thiab roj ntawm cov ntxhia thiab zaub keeb kwm.
• Inertness to biological yam stimuli.
• Cov khoom siv rov ua dua tshiab.
• Qib ntawm qhov nqus dej tsawg heev.
• Qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas kub tsawg kawg tau nce mus rau -80 degrees Celsius;
• High hluav taws xob rwb thaiv tsev.

Ntau yam khoom siv

High density low pressure polyethylene Snolen tau muab faib ua ob peb hom nyob ntawm cov cuab yeej siv los ua.

Snolen EV 0, 41/53 yog tsim los ntawm extrusion tshuab molding. Lub hom phiaj tseem ceeb ntawm cov khoom siv raw li no yog kev tsim cov kav dej siv rau kev teeb tsa cov kav dej hauv tsev thiab kev lag luam. Cov khoom loj tuaj yeem sib txawv. Kuj tseem siv tau hauv kev lag luam automotive. Siv los tsim cov hnab ntim hom.

Lwm hom high density low pressure polyethylene raws li GOST 16338-85 yog Snolen IM 26/64 thiab Snolen IM 26/59. Ob hom no yog rau txhaj tshuaj molded khoom ntau yam. Cov txheej txheem yog siv los tsim tej yam xws li tsheb thauj mus los cones, ntim, crates, thoob. Qhov chaw tseem ceeb ntawm kev siv yog kev lag luam thiab kev lag luam khoom noj.

Snolen yog hom tsis tshua muaj siab polyethylene uas tuaj yeem ua tiav los ntawm kev txiav, vuam, casting, nias.

Lwm yam khoom

Lub tuam txhab koom nrog cov khoom lag luam xws li Snolen EF 0, 33/51 thiab Snolen EF 0, 33/58. Cov cim no yog rau hom yeeb yaj kiab. Daim ntawv thov tseem ceeb ntawm cov khoom yog tsim cov yeeb yaj kiab tuab thiab nyias. Feem ntau, zaj duab xis yog siv los ntim rau ntau hom khoom. Lub hnab yas kuj yog tsim los ntawm tib hom.

Snolen 0, 26/51 - qib ntawm polyethylene, uas yog siv rau kev tsim cov kav dej. Feem ntau lawvyog siv rau kev teeb tsa cov kav dej, nrog rau cov kav dej, uas tuaj yeem siv rau ob qho tib si dej txias thiab dej kub. Cov kav dej yuav txawv ntawm txoj kab uas hla thiab xim. Tsis tas li ntawd, cov khoom no tau zoo siv hauv kev lag luam tshuaj.

High density low pressure polyethylene P-Y342 (Shurtan GCC TU), GOST 16338-85

Simplex yog lwm lub tuam txhab uas tsim cov polyethylene rau cov khoom siv tubular.

P-Y342 yog qib tseem ceeb siv rau kev tsim cov yeeb nkab. Raws li rau cov yam ntxwv ntawm cov khoom no, nws zoo ib yam li lub npe xws li PE-80. Lub ntsiab tsis zoo ntawm no polyethylene yog raws li nram no:

• Density yog los ntawm 0.940 txog 0.944g/cm3.
• Tus naj npawb ntawm cov khoom sib txawv suav nrog hauv cov khoom tsis pub dhau 5 units.
• Cov feem ntau ntawm cov tshuaj tsis hloov pauv hauv qhov muaj pes tsawg leeg tsis tshaj 0.05%.
• Tensile tawm los lub zog tsis tshaj 16 MPa.
• Elongation ntawm so yog 750%.

Dhau li qib 342, lub tuam txhab tseem tsim cov qib 337 thiab 456 nrog cov lus qhia siab.

Stavrolen LLC tseem koom nrog hauv kev tsim cov khoom 277-73. High-density low-pressure polyethylene los ntawm cov chaw tsim khoom no yog tus cwj pwm los ntawm kev tiv thaiv thermal oxidative aging. Cov ntaub ntawv sib xyaw kom txaus siab nruj nrog kev nyeem ntawv tsis tshua muaj warpage. Lawv muaj qhov zoo gloss tiav. Cov kev taw qhia tseem ceeb ntawm kev siv yog kev tsim khoom hauv tsevcov tais diav, kaus mom rau aerosols, tshuaj kho mob thiab lwm yam khoom. Txoj kev casting yog siv los tsim cov khoom.

GOST kev nyab xeeb

Ntxiv rau qhov piav qhia txog cov kev cai yooj yim uas cov polyethylene yuav tsum ua tau raws li, cov ntaub ntawv kuj tseem qhia txog qee cov cai kev nyab xeeb.

Polyethylene puag qib ntawm chav tsev kub hauv chav yuav tsum tsis txhob tso cov tshuaj lom tsis haum. Tsis tas li ntawd, nws qhov chaw yuav tsum muaj kev nyab xeeb rau tib neeg cov tawv nqaij. Thaum ua haujlwm nrog cov khoom siv zoo li no, tsis tas yuav siv cov cuab yeej tiv thaiv tus kheej. Yog tias qhov kev ua haujlwm tau ua tiav nrog cov hmoov polyethylene, ces nws yog qhov tsim nyog los siv cov khoom tiv thaiv rau lub ntsws. Tshwj xeeb, lub tshuab ua pa universal RU-60M yog siv. Yog hais tias cov khoom yog rhuab saum 140 degrees Celsius, ces polyethylene pib emit teeb meem volatile tshuaj. Cov no suav nrog carbon monoxide. Nws muaj peev xwm ua tau raws li cov txheej txheem ntawm kev ua cov polyethylene nkaus xwb nyob rau hauv cov chaw ua lag luam uas muaj qhov cua zoo. Nyob rau hauv cov ntaub ntawv no, zaus ntawm huab cua pauv nyob rau hauv chav tsev yuav tsum yog tsawg kawg yog 8. Yog hais tias sib pauv qhov cua yog ntsia, ces cov cua hloov tus nqi yuav tsum sib npaug zos rau 0.5 m / s. Yog tias qhov cua tso pa tawm, qhov ntsuas yuav nce mus rau 2 m / s.

xov xwm ntxiv

Kev xa khoom ntawm cov khoom siv hluav taws xob qis qis yog nqa tawm hauv cov khoom siv. Raws li ib pawg, muaj cov polyethylene ntawm ib hom thiab ib qib yog xam, yog tias nws qhov ntau tsis tsawg tshaj li 1 tuj. Tsis tas li ntawd, togyuav tsum muaj daim ntawv pov thawj zoo, uas koj yuav tsum tau qhia lub npe thiab cov cim lag luam ntawm cov chaw tsim khoom, cov cim, nrog rau hom khoom, hnub tsim khoom, batch naj npawb thiab qhov hnyav. Thaum tau txais, kev ntsuam xyuas kuj tau ua los txiav txim qhov zoo ntawm cov khoom. Yog tias tsawg kawg ib qho ntawm cov khoom tau txais cov txiaj ntsig tsis txaus siab, ces koj yuav tsum tau kuaj xyuas dua, thaum ua ob npaug ntawm tus lej ntawm thawj tus qauv. Cov txiaj ntsig ntawm daim tshev yuav siv rau tag nrho cov khoom lag luam.