Poly (vinyl chloride) Poly (vinyl chloride)
PVC yog polyvinyl chloride yas, ci xim, corrosion kuj, ruaj thiab ruaj, vim yog ntxiv ntawm plasticizer, anti-aging tus neeg saib xyuas thiab lwm yam khoom siv tshuaj lom neeg hauv kev tsim khoom, yog li nws cov khoom feem ntau tsis khaws cov khoom noj thiab tshuaj.
PVC yog polyvinyl chloride, uas yog cov khoom yas ua los ntawm 43% roj thiab 57% ntsev.Piv nrog rau lwm yam khoom yas, PVC siv raw cov ntaub ntawv zoo dua thiab txo cov roj noj.Tib lub sijhawm, kev siv hluav taws xob ntawm PVC kev tsim khoom yog tsawg heev.Thiab nyob rau hauv lub lig kev siv ntawm PVC cov khoom, yuav tsum tau recycled thiab hloov mus rau lwm yam khoom tshiab los yog incineration kom tau lub zog.
PVC hauv kev tsim khoom yuav ntxiv stabilizer, tab sis lub stabilizer muaj cov ntsiab lus tsis muaj tshuaj lom thiab tshuaj lom, tsuas yog ntxiv cov ntsev ntsev xws li tshuaj lom stabilizer, yuav ua rau muaj kev phom sij zais.Tab sis cov khoom siv PVC sib xyaw ua ke, qee lub lag luam me siv cov ntsev ntsev ua kom ruaj khov, nws nyuaj ua kom tau raws li cov qauv kev noj qab haus huv.Thaum cov neeg siv khoom xaiv cov khoom siv PVC, nws yog qhov zoo tshaj plaws mus rau cov khoom siv hauv tsev ua lag luam uas tau lees paub lub koob npe nrov thiab zoo, thiab nug tus neeg muag khoom kom muab daim ntawv ntsuam xyuas.Cov neeg siv khoom yuav tsum tau ua tib zoo saib xyuas cov ntaub ntawv thiab cov cim, kom tau txais "txog rau cov khoom siv dej haus kev nyab xeeb kev noj qab haus huv daim ntawv tso cai" cov khoom muaj kev nyab xeeb.
UPVC
Polyvinyl chloride nyuaj (UPVC)
UPVC, tseem hu ua tawv PVC, yog ib qho amorphous thermoplastic resin ua los ntawm vinyl chloride monomer los ntawm cov tshuaj tiv thaiv polymerization nrog qee yam khoom ntxiv (xws li stabilizer, lubricant, muab tub lim, thiab lwm yam).
Ntxiv nrog rau kev siv cov khoom siv ntxiv, txoj kev sib xyaw hloov pauv nrog lwm cov resins kuj tau txais, kom nws muaj txiaj ntsig zoo.Cov resins no yog CPVC, PE, ABS, EVA, MBS thiab lwm yam.
Lub yaj viscosity ntawm UPVC yog siab thiab lub fluidity tsis zoo.Txawm hais tias qhov kev txhaj tshuaj siab thiab qhov kub thiab txias tau nce, qhov fluidity yuav tsis hloov ntau.Tsis tas li ntawd, qhov kub thiab txias ntawm cov resin yog ze heev rau lub thermal decomposition kub, thiab qhov kub ntau ntawm cov resin tuaj yeem tsim yog nqaim heev, yog li nws yog ib hom khoom nyuaj rau kev tsim.
UPVC yeeb nkab fittings, qhov zoo ntawm cov yeeb nkab
Lub teeb yuag: Qhov kev faib ua feem ntawm cov khoom siv UPVC tsuas yog 1/10 ntawm cov hlau cam khwb cia, yooj yim thauj, nruab thiab txo nqi.
Cov tshuaj tiv thaiv zoo tshaj plaws: UPVC muaj cov kua qaub thiab lub hauv paus ua haujlwm zoo, tshwj tsis yog cov kua qaub muaj zog thiab lub hauv paus ze rau qhov chaw saturation lossis muaj zog Oxidising cov neeg ua haujlwm atmaximun.
Tsis yog-conductive: UPVC cov khoom tsis tuaj yeem ua hluav taws xob, thiab tsis corroded los ntawm electrolysis thiab tam sim no, yog li tsis tas yuav tsum tau ua haujlwm thib ob.
Tsis tuaj yeem kub hnyiab tau, los yog combustion-txhawb, tsis muaj kev txhawj xeeb txog hluav taws.
Kev txhim kho yooj yim, tus nqi qis: kev txiav thiab kev sib txuas yog qhov yooj yim heev, kev siv PVC kua nplaum kev sib txuas ua haujlwm tau ua pov thawj tias kev nyab xeeb zoo tshaj plaws, kev ua haujlwm yooj yim, tus nqi qis.
Durability: Cov huab cua zoo heev, thiab tsis tuaj yeem cuam tshuam los ntawm cov kab mob thiab cov fungi.
Tsawg tsis kam, siab txaus tus nqi: cov phab ntsa sab hauv yog du, cov dej ntws poob yog me me, cov av tsis yooj yim rau kev ua raws li cov phab ntsa du tube, kev saib xyuas yog yooj yim, cov nqi kho mob tsawg.
Polypropylene polypropylene polypropylene polypropylene yas
PP yog polypropylene yas, tsis muaj tshuaj lom, tsis qab, tuaj yeem tsau rau hauv 100 ℃ boiling dej yam tsis muaj deformation, tsis muaj kev puas tsuaj, acid acid, alkali organic solvents yuav luag tsis muaj kev cuam tshuam rau nws.Feem ntau yog siv rau cov tais diav.
Polypropylene yog polymerized los ntawm polypropylene monomer.Cov khoom tseem ceeb yog polypropylene.Raws li qhov muaj pes tsawg leeg ntawm cov monomer koom hauv polymerization, nws tuaj yeem muab faib ua ob hom: homogeneous polymerization thiab copolymerization.Homopolymer polypropylene yog polymerized los ntawm ib qho propylene monomer thiab muaj crystallinity siab, txhua yam muaj zog thiab kub tsis kam.Copolymerized polypropylene yog copolymerized los ntawm kev ntxiv me me ntawm ethylene monomer.
Nws lub ntsiab nta:
1. Cov tsos mob thiab cov yam ntxwv ntawm lub cev: xim ntuj, cylindrical hais yog dawb thiab translucent, waxy;Non-toxic, tasteless, burning nplaim daj xiav, me me ntawm cov pa luam yeeb dub, melting dripping, paraffin tsw.
2. Kev siv tseem ceeb thiab cov khoom siv: Cov polypropylene khaws cia hauv khw yog tsuas yog siv rau cov khoom siv woven, dav siv, siv tau rau cov hnab woven, ntim hlua, woven siv, hlua, ntaub pua plag backing thiab lwm yam, nws txhua xyoo tso zis ntau tshaj. 800,000 tons, accounting rau 17% ntawm tag nrho cov zis ntawm polypropylene.
PE Polyethylene polyethylene
PE yog polyethylene yas, ruaj khov khoom, feem ntau ua rau lub hnab ntim khoom noj thiab ntau lub ntim, kua qaub, alkali thiab ntsev dej yaig resistant, tab sis yuav tsum tsis txhob muab so los yog soaked nrog muaj zog alkaline detergent.
PPR
Random copolymer polypropylene
1. Hais txog Copolymer, ib copolymer hu ua Homonolymer.Ib copolymer uas copolymer rau ob lossis ntau dua monomers hu ua copolymer;
;2. Hais txog propylene thiab Ethene, PP-B thiab PP-R dhau los ua Poly poly Copolymer;ntawm lawv,
1) Siv cov txheej txheem roj copolymerization siab heev, PE yog randomly thiab uniformly polymerized nyob rau hauv molecular saw ntawm PP, cov khoom siv raw yog hu ua PP-R (random copolymerization polypropylene);
2) Siv PP thiab PE thaiv copolymerization, cov khoom siv raw no hu ua PP-B (block copolymerization polypropylene)
PEX
Crosslinked polyethylene (PEX)
Cross-linked polyethylene yeeb nkab (PEX) yeeb nkab qhia
Ordinary high density polyethylene (HDPE thiab MDPE) kav, uas nws cov macromolecules yog linear, muaj qhov loj tshaj qhov tsis zoo ntawm cov cua sov tsis zoo thiab nkag tsis kam, yog li cov kav dej zoo tib yam siab ntom ntom polyethylene tsis haum rau kev xa khoom nruab nrab nrog qhov kub siab tshaj 45 ℃."Cross-linking" yog ib txoj hauv kev tseem ceeb rau kev hloov kho polyethylene.Lub linear macromolecular qauv ntawm polyethylene ua PEX nrog peb-dimensional network qauv tom qab cross-linking, uas zoo heev txhim kho lub tshav kub tsis kam thiab creep kuj ntawm polyethylene.Lub caij no, nws cov kev laus tsis kam, cov khoom siv kho tshuab thiab cov pob tshab tau zoo dua.Nyob rau tib lub sij hawm inherits lub hauv paus chiv keeb tshuaj corrosion kuj thiab yooj ntawm polyethylene yeeb nkab.Muaj peb hom kev lag luam muaj PEX raj.PEXa yeeb nkab PEXb yeeb nkab PEXC yeeb nkab
PEX tube nta
Zoo heev kub thiab txias tsis kam, siab thermal zog ntawm qhov kub thiab txias:
Zoo heev tsis tshua muaj kub kuj toughness:
Cua sov yam tsis muaj melting:
Kev tsis sib haum xeeb tsis zoo: Cov ntaub ntawv nkag mus yog lub hauv paus tseem ceeb rau cov khoom tsim thiab kev xaiv cov khoom siv engineering.Piv nrog rau cov khoom siv ib txwm muaj xws li hlau, kev coj tus cwj pwm ntawm cov yas yog qhov tseem ceeb nyob ntawm lub sijhawm thauj khoom thiab kub.Cov yam ntxwv ntawm cov raj PEX yog yuav luag ib qho ntawm cov kav dej zoo tshaj plaws ntawm cov kav dej yas.Kev tsis sib haum xeeb tsis zoo: Cov ntaub ntawv nkag mus yog lub hauv paus tseem ceeb rau cov khoom tsim thiab kev xaiv cov khoom siv engineering.Piv nrog rau cov khoom siv ib txwm muaj xws li hlau, kev coj tus cwj pwm ntawm cov yas yog qhov tseem ceeb nyob ntawm lub sijhawm thauj khoom thiab kub.Cov yam ntxwv ntawm cov raj PEX yog yuav luag ib qho ntawm cov kav dej zoo tshaj plaws ntawm cov kav dej yas.
Semi-permanent kev pab lub neej:
Tom qab lub raj PEX tau dhau qhov kev sim ntawm 110 ℃ kub, 2.5MPa lub nplhaib kev ntxhov siab thiab lub sijhawm 8760h, nws tuaj yeem txiav txim siab tias nws lub neej ua haujlwm tsis tu ncua ntawm 50 xyoo ntawm 70 ℃.
Post lub sij hawm: Dec-06-2022