Cov kav dej polypropylene yog dab tsi? Dab tsi yog qhov ntawm lawv daim ntawv thov, cov yam ntxwv kev, lawv cov cim txhais li cas? Hauv tsab xov xwm no, peb yuav sim nkag siab tag nrho cov teeb meem no. Thiab kom nkag siab tias yog vim li cas cov qauv yeeb nkab no tau suav tias yog cov khoom siv tshwj xeeb, yam tsis muaj hnub no nws tsis tuaj yeem xav txog kev teeb tsa lossis kho cov dej, cua sov lossis kev sib txuas ntawm cov kav dej.
Polypropylene yeeb nkab - nws yog dab tsi?
Polypropylene yog hom thermoplastic polymer. Nws yog tsim los ntawm kev sib txuas (polymerization) molecules ntawm ethylene gas derivative. Kev xaiv thoob ntiaj teb ntawm polypropylene yog "PP". Tom ntej no, peb yuav ua tib zoo saib ntawm cov kav dej polypropylene: cov yam ntxwv ntawm kev ua haujlwm, cov khoom siv thiab kev tsim khoom ntawm cov khoom siv tiam tshiab no.
muajtshwj xeeb tsis kam rau alkaline cov kuab tshuaj thiab cov khoom hnyav, cov khoom siv dav siv hauv kev teeb tsa cov cua sov, cov kav dej thiab cov chaw huv. tuaj yeem tiv taus qhov kub thiab txias (txog -10 degrees) lossis siab kub (txog +110 degrees).
Cov khoom tseem ceeb ntawm cov kav dej polypropylene thiab lawv GOST
Cov kav dej niaj hnub polypropylene, cov yam ntxwv thiab cov khoom uas tuaj yeem pom hauv lub rooj, muaj kev ntseeg siab, ruaj khov thiab pheej yig heev. Lub ntsiab thiab indisputable kom zoo dua yog qhov tseeb hais tias lawv tsis raug rau corrosive txheej txheem, resistant rau kub tej yam kev mob, yooj yim rau nruab, ua los ntawm ib puag ncig tus phooj ywg cov ntaub ntawv. Cov khoom tseem ceeb raws li GOST tau nthuav tawm hauv qab no.
GOST |
Parameter |
Indicator |
| DIN52612 | Thermal conductivity, at +200С | 0, 24 W/cm |
| 15139 | Density | 0.9g/cm3 |
| 23630 | Specific cua sov ntawm +200С (specific) | 2 kJ/kgf |
| 21553 | Muaj | +1490C |
| 11262 | Lub zog kawg (thaum tawg) | 34÷35 N/mm2 |
| 18599 | Lengtheningyield zog | 50% |
| 11262 | Yield zog (tensile) | 24÷25 N/mm2 |
| 15173 | Expansion factor | 0.15mm |
Ib hom polypropylene yeeb nkab. Scope ntawm daim ntawv thov
Cov thev naus laus zis tshiab tshaj plaws rau kev tsim cov khoom yas yog cov kav dej polypropylene. Specifications muaj nyob hauv qab no.
- PN10 - cov yeeb nkab nyias. Lub neej ua haujlwm yog kwv yees li 50 xyoo. Nws yog siv thaum txhim kho cov dej txias, cua sov hauv pem teb (cov khoom siv hluav taws xob kub yuav tsum tsis pub tshaj + 45 0 С). Txheem qhov ntev: sab nraud Ø 20 ÷ 110 hli, hauv Ø 16.2 ÷ 90 hli, yeeb nkab phab ntsa thickness 1.9 ÷ 10 hli. Nominal siab - 1 MPa.
- PN20 - hom yeeb nkab no yog siv rau hauv cov dej txias hauv cov tsev nyob lossis cov tsev lag luam lossis cov dej kub (txog +800С). Lub neej ua haujlwm yog 25 xyoo. Nominal siab - 2 MPa. Dimensions: sab nraud Ø 16÷110 mm, puab Ø 10.6÷73.2 mm, yeeb nkab phab ntsa thickness 16÷18.4 mm.
- PN25 - polypropylene yeeb nkab txhawb nqa nrog aluminium zaj duab xis lossis iav fiber ntau. Los ntawm nws cov khoom nws zoo ib yam rau hlau-yas. Lub neej kev pab cuam nyob ntawm qhov siab hauv nws thiab cov nqa khoom kub. Nws yog siv nyob rau hauv installation ntawm lub tshuab cua sov thiab dej kub. Nominal siab - 2.5 MPa. Dimensions: Ø sab nraum21, 2÷77.9mm, Ø hauv 13.2÷50mm, yeeb nkab phab ntsa thickness 4÷13.4mm
Qhov zoo ntawm cov kav dej polypropylene
Dab tsi yog qhov txiaj ntsig tsis txaus ntseeg ntawm cov kav dej polypropylene? Cov yam ntxwv ntawm polypropylene, raws li manufacturers, yog amazing tiag tiag. Nws yog suav hais tias yog ib lub tsev khoom siv thoob ntiaj teb rau kev teeb tsa thiab kev tsim kho ntawm cov khoom siv hluav taws xob hauv thaj chaw thiab kev lag luam. Lawv tau raug sim ua tiav hauv kev ywj pheej European thiab ntiaj teb cov chaw sim thiab tau lees paub cov ntawv pov thawj zoo. Xav txog qhov zoo.
- Lawv qhov txiaj ntsig tseem ceeb yog lub neej ua haujlwm ntev - txog 50 xyoo, thiab thaum siv cov dej txias txias, lawv tuaj yeem ua haujlwm txog 100 xyoo.
- Vim qhov tshwj xeeb tsim sab hauv ntawm cov kav dej, uas txuas nrog dej tas li, tsis muaj qhov tso rau ntawm lawv qhov chaw.
- Ntsuab cais. Thaum thauj cov dej kub los ntawm qhov nruab nrab cua sov lossis nrog cov dej ntws yooj yim, cov suab nrov tuaj yeem tshwm sim. Polypropylene tuaj yeem nqus tau lawv.
- No condensation. PPR polypropylene yeeb nkab tuaj yeem tiv taus qhov kub thiab txias vim tsis muaj thermal conductivity.
- Lub teeb yuag. Muab piv rau lawv cov hlau, lawv yog 9 npaug sib dua.
- Yooj yim rau nruab.
- Tsis xav tau kev saib xyuas ntxiv.
- Resistant mus tua los ntawm acid-base tshuaj.
- Qhov elasticity ntawm cov yeeb nkab polypropylene yog siab heev.
- Tus nqi pheej yig.
Daim ntawv qhia khoomnp25
Tsis ntev dhau los, cov tuam txhab tsim thiab tsim cov yeeb nkab polypropylene pn25. Nws cov yam ntxwv kev qhia tau piav qhia meej hauv cov ntaub ntawv cov khoom.
Lub npe |
Tus nqi rau cov kav dej polypropylene: qhov ntev |
||||||
20÷3, 4 |
25÷4, 2 |
32÷5, 4 |
40÷6, 7 |
50÷8, 3 |
63÷10, 5 |
||
| 1 | Inner Ø | 13, 2mm | 16, 6 mm | 21, 2mm | 26, 6 mm | 33, 4 mm | 42, 0 mm |
| 2 | Kev muaj peev xwm tshwj xeeb | 1, 75 kJ/kg0 | |||||
| 3 | Ø kam rau | +0.3mm | +0.3mm | +0.3mm | +0.4mm | +0.5mm | +0.6mm |
| 4 | Linear expansion, (1/0C) | 3,5÷10-5 | |||||
| 5 | Lub sijhawm cua sov thaum lub sijhawm vuam | 5 sec | 7 sec | 8 sec | 12 sec | 18 sec | 24 sec |
| 6 | Roughness coefficient(sib npaug) | 0.015 mm | |||||
| 7 | Lub sijhawm txias, (seconds) | 120 sec | 120 sec | 120 sec | 240 sec | 250 sec | 360 sec |
| 8 | Qhov kawg tensile zog | 35 MPa | |||||
| 9 | Regulatory series | S2, 5 | |||||
| 10 | Nyob ntawm kev so (kwv tij) | 350% | |||||
| 11 | Nyhav (kg / linear meter) | 0, 175 | 0, 272 | 0, 446 | 0, 693 | 1,075 | 1,712 |
| 12 | Tensile Yield Strength | 30 MPa | |||||
| 13 | Melt flow rate (index) PPR | 0.25g/10min | |||||
| 14 | Thermal conductivity | 0.15W m/0C | |||||
| 15 | Lub sijhawm cua sov thaum lub sijhawm vuam | 5 sec | 7 sec | 8 sec | 12 sec | 18 sec | 24 sec |
| 16 | PPR modulus ntawm elasticity | 900 MPa | |||||
| 17 | Qhov tob ntawm cov yeeb nkab qhov (tsawg kawg) thaum vuam | 14mm | 15mm | 17mm | 1 8mm | 20mm | 24mm |
| 18 | Pipe ntom (sib npaug) | 0.989 g/m3 | |||||
| 19 | Vim (sab hauv) khiav meter/l | 0, 137 | 0, 217 | 0, 353 | 0, 556 | 0, 876 | 1,385 |
| 20 | Modulus ntawm elasticity PPR + fiber | 1200MPa | |||||
| 21 | Size Ratio(Standard) | 6SDR | |||||
| 22 | PPR Ceev | 0.91 g/m3 | |||||
| 23 | Pressure (nominal), PN | 25bar | 25bar | 25bar | 25bar | 25bar | 25bar |
| 24 | Lub sijhawm sib tw | 4 sec | 4 sec | 6 sec | 6 sec | 6 sec | 8 sec |
Nov tshiab hauv kev lag luam hlau-yas nrog cov khoom zoo thiab cov khoom - polypropylene yeeb nkab pn25. Specifications tau piav qhia hauv cov lus saum toj no. Nws yog nws uas muaj peev xwm daws tau qhov teeb meem nrog lub siab coefficient ntawm thermal expansion ntawm cov khoom yas yeeb nkab. Qhov no ua rau nws tuaj yeem siv rau hauv cov dej haus, dej kub, kev teeb tsa cua sov thiab lwm yam khoom siv. Thiab kuj yog rau kev thauj lwm cov kua lossis roj uas tsis ua rau muaj kev cuam tshuam nrog rau cov ntaub ntawv uas lawv tau tsim.
Design nta
Cov txheej sab hauv thiab sab nraud yog ua los ntawm qib tshwj xeeb PPR100 polypropylene. Hauv nws, qhov feem pua ntawm fiberglass fiber ntau yog tsawg kawg yog 12%. Cov txheej sab hauv yog tsim los ntawm tib cov khoom, tab sis cov ntsiab lus fiber ntau tau nce mus rau 70%, thiab tseem muaj cov ntsiab lus xim liab. Lub xub ntiag ntawm fiberglass fiber ntau nyob rau hauv muaj pes tsawg leeg ntawm cov yeeb nkab txo cov theem ntawm deformation los ntawm qhov kub thiab txias, tab sis, hmoov tsis, tsis tuaj yeem tiv nrog oxygen diffusion.
Dab tsi yog qhov kev txhawb nqa ntawm cov kav dej polypropylene. Hom kev txhawb zog
Xav txog universal reinforced polypropylene kav, lawv cov yam ntxwv, hom kev txhawb zog, qhov twg lawv siv. Kev txhawb tshwj xeeb ua rau nws muaj peev xwm siv tau rau hauv lub tshuab cua sov lossis dej kub. Tsis tas li ntawd, lawv tsis tsuas yog nto moo rau lawv ntevkev pab cuam lub neej, tab sis kuj zoo thiab efficiency. Txog niaj hnub no, muaj ob txoj hauv kev los txhawb cov khoom no: fiberglass thiab aluminium. Cia peb xav txog nyias nyias.
Fiberglass reinforcement
Fiberglass reinforcement yog peb txheej yeeb nkab siv: ob txheej ntawm polypropylene (sab hauv thiab sab nraud) thiab txheej fiberglass. Kos npe li PPR-FB-PPR. Xws li cov ntawv luv luv hauv kev kos npe lees paub cov qauv monolithic thiab fiberglass reinforcement. Cov khoom no tsis tas yuav tsum tau calibrated los yog stripped thaum lub sij hawm installation, cov kws txawj pom zoo kom txhim kho ntxiv fasteners thaum lub sij hawm installation.
Aluminium reinforcement
Cov khoom siv yeeb nkab nrog cov cuab yeej zoo li no yog cov khoom siv rau kev teeb tsa cov cua sov lossis dej kub nrog cov txheej txheem siab nruj. Lawv zoo ib yam nyob rau hauv lub zog rau hlau counterparts nrog nyias phab ntsa. Ntawm lawv qhov chaw, PPR-AL-PPR cim yuav tsum muaj. Kev txhawb nqa nrog ob txheej ntawm txhuas: thawj zaug yog perforated nrog lub qhov me me, thiab qhov thib ob yog cov khoom ruaj khov thiab ruaj khov rau tag nrho saum npoo ntawm cov yeeb nkab qauv. Thaum txhim kho cov cua sov, cov yeeb nkab yuav tsum tau muab tshem tawm ntawm txhuas txheej, tsuas yog txheej polypropylene yog soldered. Yog tias cov cuab yeej siv tau raug siv, ces lub tshuab mounted yuav ua haujlwm tau ntau xyoo yam tsis muaj teeb meem.
Polypropylene thiab nws daim ntawv thov hauv cov kav dej phwj
Yog li peb xam pom qhov ntawdpolypropylene raws li cov khoom siv yeeb nkab yog cov resistant rau aggressive alkaline thiab tshuaj lom neeg. Yog li ntawd, rau lo lus nug "qhov twg cov kav dej zoo dua los xaiv rau kev sib txuas lus engineering?" Cov lus teb yog unequivocal - niaj hnub polypropylene kav kav dej. Technical yam ntxwv: stability, lub zog thiab durability. Ntxiv nrog rau kev tiv thaiv kev cuam tshuam ntawm cov tshuaj aggressive rau lawv, thiab muaj ntau ntawm xws li gutters, lawv kuj yuav kav ntev heev. Lawv tsis cuam tshuam los ntawm cov txheej txheem corrosive hauv kev sib piv nrog cov kav hlau. Qhov ntev ntawm cov yeeb nkab rau cov kav dej yog hais txog 4 meters, txoj kab uas hla ntawm cov kav dej polypropylene (cov ntaub ntawv tshwj xeeb muaj xws li cov ntaub ntawv) yog los ntawm 16 hli mus rau 125 hli. Ntawd yog, lawv cov peev txheej hauv cov kav dej phwj tuaj yog qhov dav heev. Lawv tau txuas rau ib leeg los ntawm kev sib txuas welding lossis siv cov fittings tshwj xeeb.
V altec polypropylene kav
Hnub no muaj ntau qhov muab los ntawm cov tuam txhab tsim khoom ntawm cov khoom no rau cov neeg yuav khoom hauv peb lub tebchaws. Thiab thaum xaiv cov khoom siv rau kev teeb tsa engineering, qee zaum nyuaj rau kev xaiv los ntawm ib qho ntawm lawv. Nyob rau hauv tsos, lawv yog kiag li zoo tib yam, thiab txawv tsuas yog nyob rau hauv manufacturing technology. Thiab txawm tias tom qab ntawd, yog tias ib tug neeg tsis muaj peev xwm ntawm qhov teeb meem ntawm cov khoom siv yeeb nkab, ces nws tsis zoo li yuav nkag siab cov yam ntxwv ib yam. Qhov no yog qhov tseeb tshwj xeeb rau cov tuam txhab tshiab uas nyuam qhuav tshwm sim hauv khw muag khoom.
Italian manufacturers "V altek"nthuav qhia rau tus neeg yuav khoom lawv cov kav dej V altec polypropylene tshiab. Specifications: zoo heev, kev tsim khoom tshiab, durability thiab kev ntseeg siab. Ntxiv mus, lub tuam txhab no tau tuav txoj haujlwm tseem ceeb hauv kev muag khoom rau ntau xyoo. Nws cov khoom ib txwm muaj thiab xav tau. Qhov zoo yog qhov siab vim tias lub tuam txhab ua kom nrawm nrog kev tsim cov thev naus laus zis tshiab thiab qhia lawv rau hauv nws cov khoom. Cov neeg tsim khoom muab 7 xyoo lav rau cov khoom.
Tus nqi ntawm tag nrho cov khoom lag luam yog pheej yig heev. Muaj ib txwm muaj ib qho tseem ceeb rau cov dej txias txias thiab cov kav dej polypropylene sib xyaw nrog cov iav fiber ntau los yog txhuas nrog ib txoj kab uas hla ntawm 20 ÷ 90 mm. Cov neeg ua haujlwm ntawm lub tuam txhab tau ua tib zoo saib xyuas cov khoom zoo, yog li kev ua yuam kev lossis kev sib txawv ntawm cov qauv raug tshem tawm tag nrho. Ua rau hauv cov raj tshwj xeeb txog li 4 meters cim, nrog rau cov ntaub ntawv thiab daim ntawv pov thawj.
PPRC kav
Cov no yog cov kav dej ua los ntawm cov kub kub polypropylene. Lawv tau tsim nrog ib txoj kab uas hla ntawm 20 ÷ 160 mm. Reinforced nrog fiberglass los yog aluminium. Lawv lub ntsiab sib txawv yog qhov ntsuas me me ntawm thermal expansion, tsis tshua muaj siab poob. Cov tshuab tsim khoom ua tau raws li GOST thiab cov kev cai ntawm cov qauv txawv teb chaws. Dab tsi yog polypropylene kav pprc? Specifications, khoom thiab qhov zoo ntawm cov khoom yas:
- qisthermal conductivity;
- qib siab ntawm lub suab rwb thaiv tsev;
- ua haujlwm rau cov txheej txheem corrosion;
- tawm tsam cov tshuaj phem;
- siab zog;
- khoov ntau dua ib zaug;
- khoom siv ib puag ncig tus phooj ywg;
- easy to install;
- tus nqi pheej yig;
- ntev kev pab cuam lub neej.
Kev siv cov polypropylene hauv cov khoom siv dej
Cov khoom siv yas yeeb nkab tau nkag mus rau hauv cov npe ntawm cov khoom siv hauv tsev nrov, cov kav dej polypropylene tsis muaj qhov tshwj xeeb. Cov lus qhia tshwj xeeb, qhov zoo thiab qhov tsis zoo tau nthuav tawm hauv qab no.
YDignity:
- corrosion resistant;
- kev pab cuam lub neej - los ntawm 50 xyoo;
- xoom conductivity, huv si;
- easy to install;
- tsis xav tau kev saib xyuas ntxiv;
- tus nqi pheej yig;
- muaj peev xwm tiv taus siab ib puag ncig 20 bar;
- zoo thermal rwb thaiv tsev.
Flaws:
- tsis tuaj yeem tiv taus qhov kub siab tshaj 100 0 C;
- tsis muaj peev xwm kho lossis kho;
- vuam ua haujlwm yuav tsum tau.
Muaj ntau xim: grey, ntsuab, dub thiab dawb. Cov xim ntawm cov yeeb nkab tsis yog nyob ntawm cov khoom thiab qhov zoo, tsuas yog dub. Nws muaj peev xwm tiv thaiv nws los ntawm ultraviolet hluav taws xob. Cov kav dej yog siv los txhim kho cov kav dejTxoj kab uas hla 16 ÷ 110 mm. Rau cov dej txias, cov kav dej sau npe PPH homopolymer lossis PPB thaiv copolymer yog tsim nyog. Txhawm rau muab dej kub lossis cua sov, cov kav dej uas cim PEX-AL-PEX yog siv. Lawv tau txhawb nqa nrog fiberglass lossis aluminium.
Kev faib cov kav dej polypropylene
Tag nrho cov khoom siv polypropylene yeeb nkab tau muab cais ua ib txoj hauv kev.
- PPB - cim txhais tau tias cov no yog cov kav dej uas muaj qib siab ntawm cov khoom siv dag zog, cov kav dej polypropylene yog siv rau cua sov. Nta: Siv zog (fiberglass lossis aluminium ntawv ci), muaj zog, ruaj khov, pheej yig.
- PPH - kos npe ntawm cov khoom nrog cov kab loj. Siv nyob rau hauv qhov cua tshuab los yog cov dej txias.
- PPR yog lub npe nrov tshaj plaws thiab ntau yam. Nws versatility nyob rau hauv qhov tseeb hais tias nws muaj peev xwm tiv taus siab kub ntawm cov dej ntws. Siv hauv cov dej kub thiab cua sov.
Tag nrho peb hom no txawv ntawm ib leeg tsuas yog hom yas siv hauv kev tsim khoom. Lawv muaj cov additives tshwj xeeb uas ua rau lawv elastic thiab ruaj khov.
