1. Taw qhia
Nylon tau dhau los ua ib qho ntawm cov khoom siv dav tshaj plaws hauv cov tshuab lim dej vim nws qhov kev sib xyaw ua haujlwm ntev, tshuaj lom neeg ruaj khov, hydrophilicity, thiab ntau yam thoob plaws qhov ntau thiab tsawg. Thaum polypropylene thiab stainless hlau kuj tseem muaj nyob rau hauv cov kua dej- tuav kev lag luam, nylon muaj qhov sib npaug ntawm cov khoom siv thiab tshuaj lom neeg uas ua rau nws tsim nyog rau kev siv xws licoarse ntsuam xyuas hauv cov twjraumicro-particle filtration hauv chav kuaj thiab cov txheej txheem kev lag luam.
Tsab ntawv xov xwm no muab lub hauv paus rau kev nkag siab txog yuav ua li cas thiab yog vim li cas nylon siv rau hauv dej pom, npog cov qauv polymer, pore-size science, ntws tus cwj pwm, tsis ua hauj lwm hom, filtration efficiency modeling, thiab engineering xav txog.
nyeem ntxiv:Engineering Applications of Nylon Water Filters: Design Principles, Industrial Uses & Performance Optimization
2. Cov Khoom Siv Tshawb Fawb Tom Qab Nylon Lim
Nylon (polyamide) yog cov khoom siv hluav taws xob uas muaj cov ntaub ntawv rov qab amide. Cov khoom uas txhais nws tus cwj pwm pom muaj xws li:
2.1 Siab Mechanical Strength
Nylon fiberstiv taus tensile deformation, txhais tau tias lub mesh tswj lub pore qauv txawm nyob rau hauv lub siab ntws. Qhov no yog qhov tseem ceeb rau:
twj tso kua mis screens
inline ua ntej -filters
zoo dej filtration
ua liaj ua teb irrigation kab
2.2 Hydrophilic Properties
Hydrophilicity txhawb nqa:
tsis tu ncua ntub dej
zoo dua ntws faib
txo cov npuas npuas
luv filtration pib- lub sij hawm
2.3 Resistance rau Abrasion
Cov dej uas muaj xuab zeb, grit, los yog xeb yuav tsis yooj yim txiav cov xov nylon.
2.4 Kev khiav hauj lwm qhov kub thiab txias
Hom nylon 6 lossis nylon 6/6 mesh tuaj yeem zam:
-40℃rau +120 degreekev ua haujlwm tas mus li
luv excurs mus txog150 degree
3. Nylon MeshHom kev lim dej
Txawv weaving thiab fiber ntau cov qauv txiav txim siab ua haujlwm.
Rooj 1. Hom Nylon Lim Mesh Hom
|
Mesh Hom |
Kev piav qhia |
Tej yam kev siv dej |
|
Monofilament Nylon Mesh |
Ib leeg nruam filament; uniform pore qauv |
Kev tshuaj xyuas dej haus, twj tso kua mis lim |
|
Multifilament Woven Nylon |
Ntau fibers twisted; tob tob- tuav lub peev xwm |
Kev tshem tawm sediment, irrigation, zoo pom dej |
|
Nylon Microporous Membrane |
Cast film nrog sub-micron pores |
High -kev ntsuas dej, microbiology |
|
Nylon Lim Socks |
Tube -zoo li tus mesh |
Stormwater, kev tsim kho kev khiav dej num |
4. Lim Mechanisms ntawm Nylon hauv Dej
Kev lim dej nrog nylon feem ntau suav nrog ib lossis ntau qhov hauv qab no:
4.1 Nto Lim
Cov khoom yog daig rau ntawm qhov chaw ntawm lub mesh, feem ntau rau:
twj tso kua mis screens
industrial txias dej
stormwater sediment thom khwm
4.2 Qhov tob lim
Feem ntau tshwm sim nyob rau hauv multifilament weaves; particles migrate rau hauv fiber ntau.
4.3 Sieving Lim (Size-Kev cais tawm)
Pores lub cev thaiv qhov teeb meem loj dua qhov ntsuas qhov loj.
4.4 Adsorptive lim
Nylon's polar amide pawg tuaj yeem cuab:
colloids
organic tawg
zoo proteinaceous teeb meem
Qhov no ua rau nylon pab tau rauzaub mov- qib dej, kev ua dej haus, thiabbiotechnology yaug dej.
5. Kev xaiv pore loj rau kev lim dej
Table 2. Pore Size vs. Kev thov dej
|
Pore Loj |
Particle Tshem Tawm Muaj Peev Xwm |
Kev siv yam |
|
1000–3000 µm |
Gravel, khib nyiab |
Pump intake screens |
|
200–800 µm |
Xuab zeb, kab |
Pas dej ua ntej- lim |
|
50–200 µm |
Silt, xeb |
Cov dej zoo, cov kav dej |
|
10–50 µm |
Fineer hais |
Cua txias yees, industrial ntxhua khaub ncaws |
|
1–10 µm |
Micro-particles |
Laboratory dej, microelectronics |
|
<1 µm |
Colloids, microbes (tsis sterilizing) |
Polishing cov ntxaij lim dej |
6. Nylon ua li cas tiv thaiv cov dej paug
Nylon zoo nrog:
xuab zeb & silt
xeb hauv dej zoo
algae tawg
organic fibers
sediment los ntawm cov chaw tsim kho
polymer flakes nyob rau hauv industrial dej loops
6.1 Lim Efficiency Modeling
Lim efficiency (E) tuaj yeem kwv yees los ntawm:
E=1 – (Coutlet / Cinlet)
Kev suav ntau dua mesh thiab qhov pore me me ua rau muaj txiaj ntsig E ntau dua.
7. Kev tiv thaiv ib puag ncig hauv cov txheej txheem dej
Nylon khaws stability hauv:
dej tshiab
dej hauv av
mineral - dej nplua nuj
kho dej hauv nroog
dej hiav txwv (short -)
Txawm li cas los xij, nylon yog rhiab heev rau:
muaj zog acids
oxidizers (piv txwv li, tshuaj dawb)
siab - dej chlorine
8. Mechanical Durability hauv Flow Systems
Nylon mesh feem ntau siv hauv:
rotating twj tso kua mis
submersible twj tso kua mis inlet guards
siab- tswj kav dej
Mechanical zoo:
tsawg deformation
siab abrasion tsis kam
lub neej ua haujlwm ntev
9. Cov kev txwv ntawm Nylon lim hauv dej
Thaum nylon yog qhov tsim nyog, nws tsis zoo tag nrho.
Rooj 3. Nylon txwv
|
Kev txwv |
Kev piav qhia |
|
Chlorine degradation |
Kev raug mob ntev ua rau cov fibers nkig |
|
Microbial biofouling |
Cov dej sawv ntsug txhawb kev tsim cov slime |
|
Tsis pom tseeb |
High -precision sterilization yuav tsum muaj daim nyias nyias |
|
o nyob rau hauv acidic dej |
Txo pore uniformity |
10. Cov lus xaus
Nylon yog cov khoom siv zoo tshaj plaws rau kev lim dej hauv ntau yam ntsiab lus. Los ntawm kev tshuaj ntsuam ntxhib mus rau qhov tseeb microfiltration, nylon muab ntau yam, ruaj khov, thiab tus nqi - daws tau zoo. Nws hydrophilicity, txhua yam muaj zog, thiab tshuaj lom neeg kam rau ua rau nws zoo tagnrho rau cov tsev nyob, kev lag luam, kev ua liaj ua teb, thiab chav kuaj.