Raws li ib qho ntawm cov hluav taws xob ntau tshaj plaws hauv lub ntiaj teb, PVC nplaum tau siv hauv kev tsim kho, kev kho tsheb, kev ua haujlwm tsis zoo, muaj zog thiab lub teeb ci. Txawm hais tias nws yog pipes, gussets, ntoo pas dej, lossis cov paib kev sib tsoo, cov paib tshaj tawm, kev tshaj tawm zoo rau lub neej thiab kev nyab xeeb ntawm cov khoom. Txawm li cas los xij, vim muaj tshuaj lom neeg qis thiab muaj zog tshuaj lom neeg inertness ntawm cov ntaub ntawv PVC, nws yog qhov nyuaj rau cov nplaum tsoos kom tau txais txiaj ntsig zoo. Kab lus no yuav qhia koj nrog txoj kev daws teeb meem ntawm cov kev xav ntawm PVC cov khoom muaj teeb meem, kev xaiv cov kua nplaum thiab kev ua haujlwm nyuaj.
PVC Cov Khoom Uas Cov yam ntxwv thiab kev sib tw sib tw
Cov koob meej thiab cov txiaj ntsig ntawm PVC
PVC tau dhau los ua cov khoom siv rau kev kho kom zoo nkauj (xws li phab ntsa panels, ceilings) thiab kev lag luam vim nws tus nqi qis, yooj yim kev ua haujlwm thiab muaj zog tiv taus. Nws cov qauv molecular yog ruaj khov thiab tuaj yeem tiv taus kua qaub, alkali, roj av thiab nws muaj rab ntaj "thaum sib tham.
Kev tsom xam cov teeb meem nyuaj
Lub zog qis lub zog: PVC nto yog du thiab hydrophobic, thiab cov kua nplaum dog dig yog qhov nyuaj rau ntub thiab nkag mus rau qhov tsis txaus ntseeg
Cov yas teb chaws tsiv teb chaws: qee cov muag muag pvc muaj cov yas tshuab, uas yuav pom tom qab siv tom qab kev siv ntev thiab ua kom puas tsuaj rau kev sib txuas lus.
Thermal expansion txawv: thaum PVC raug sib khi rau lwm cov ntaub ntawv (xws li hlau thiab ntoo), nws yog ib qho yooj yim los ua tawg thiab sib txawv cov coefficiention thiab contraction coefficients.
Cov ntsiab cai xaiv ntawm PVC cov nplaum
Xaiv Tsim Nyog tau PVC cov kua nplaum yuav tsum muaj kev nkag siab txog peb yam: Substrate hom, siv ib puag ncig, thiab thauj khoom ib puag ncig, thiab thauj khoom ib puag ncig, thiab thauj khoom. Cov hauv qab no yog cov lus pom zoo tshaj lij:
1. Hnyav-based PVC Tshwj Xeeb Kua nplaum
Muaj feem xyuam nrog cov xwm txheej: PVC thiab PVC Bonding ntawm tib cov khoom (xws li cov yeeb nkab txuas thiab phaj Splicing).
Ua haujlwm ua haujlwm: Cov solvent me ntsis sib cais puv PVC nto thiab ua tiav "Vuam" Fusion Los Ntawm Molecular Saw Ananglement.
Cov txiaj ntsig zoo: Muaj zog ua lub zog (mus txog ntau dua 80% ntawm cov khoom siv lub cev muaj zog ({} feeb} feeb pib kho).
Nco tseg: Kev phom dav yog qhov yuav tsum tau ua kom tsis txhob muaj kev pheej hmoo mob los ntawm kev daws qhov kev phom sij.
2. Hloov Cyanacrylate (Cov kua nplaum tam sim)
Muaj feem xyuam nrog cov xwm txheej: Kev kho kom sai ntawm me-thaj tsam PVC nrog hlau thiab ceramics (xws li hniav sawb installation).
Ua haujlwm ua haujlwm: Lub zog high-zog sib koom txheej yog tsim los ntawm catalytic polymerization kev tawm tsam.
Cov txiaj ntsig: {{3-10 kev tshaj tawm, haum rau kev sib dhos kab kev ua haujlwm; Kub tsis kam ntau -40 degree rau 120 degree.
Cov Lus Cim: Nws yog nkig thiab xav tau siv nrog tus thawj yug los txhim kho kev cuam tshuam.
3. POLYURETHANE cov qauv nplaum
Muaj feem xyuam nrog cov xwm txheej: heterogeneous bonding ntawm pvc thiab cov ntaub ntawv ntxeem tau (ntoo, ua vaj tse).
Ua haujlwm ua haujlwm: Tom qab kho cov txheej txheem, ib txheej nplaum elastive yog tsim kom tsis muaj kev ntxhov siab.
Cov txiaj ntsig: Kev co-resistant thiab tev-resistant, haum rau cov tsev sab nraum zoov (xws li phab ntsa phab ntsa sab nrauv kho vaj huam sib luag).
Cov Lus Cim: Lub sijhawm kho tau ntev ({24-48 teev), thiab kev kho siab thiab siab kho.
4. UV kho cov nplaum
Muaj feem xyuam nrog cov xwm txheej: kev sib koom tes ntawm pob tshab PVC cov khoom lag luam (xws li cov kws kho mob thiab cov yeeb yaj kiab ntim khoom).
Ua haujlwm ua haujlwm: Ultraviolet Rays Ua Haujlwm Cov kua nplaum ua kua nplaum polymerization kom ua tiav kev tswj kom meej.
Cov txiaj ntsig: Cov kuab tshuaj-dawb thiab ib puag ncig phooj ywg; Siab transparency, tsis cuam tshuam rau tsos.
Cov Lus Cim: Nws yuav tsum tau siv nrog UV teeb thiab tsis haum rau cov chaw opaque.
Tsib kauj ruam tseem ceeb rau kev vam meej rau kev ua tiav PVC sib tham
Txawm hais tias koj xaiv cov kua nplaum zoo, tsis quav ntsej cov ntsiab lus ntawm kev ua haujlwm tseem yuav ua rau muaj kev ua haujlwm tsis ua haujlwm. Cov txheej txheem hauv qab no tau tshawb xyuas xyoo hauv qab ntawm kev coj ua thiab tuaj yeem txhim kho qhov ua tiav tus nqi:
1. Nto Nto Pretreatment: Lub Pob Txheem Kev Ua Haujlwm
Kev tu thiab kev txiav txim siab: Siv isopropyl cawv lossis cov tshuaj ntxuav tshwj xeeb kom huv si tshem tawm cov roj thiab tso tawm cov neeg sawv cev.
Kev npau taws rau lub cev: Siv 180-240 grit sandpaper rau polish ua rau thaj chaw tiv toj (muag pvc yuav tsum tau maj mam polished).
Kev Siv Tshuaj Tiv Thaiv: Rau kev ua haujlwm nyuaj (xws li fluorine-coated pvc), thov ib qho primer (xws li loadtite 770) txhawm rau txhim kho adchesion.
2. Quav Txheej Txheej
Yuav tsum tau nyias txheej txheem kev cai: cov kuab tshuaj nplaum yuav tsum tau thov kom yuag (0. {2}}. 3 hli). Cov tuab heev yuav nthuav tawm lub sijhawm kho thiab tsim cov npuas.
Muab ob npaug rau ib sab gluing: Thaum ua tsev hais lus heterogeneous, nws raug nquahu kom thov cov kua nplaum rau ob qho chaw (tshwj tsis yog polyurethane kua nplaum).
3. Cov lej kho kom meej thiab nias
Kev hloov kho ua ntej kev kho pib pib: kuab kua nplaum yuav tsum tau ua raws li 1 feeb; Cov kua nplaum tam sim ntawd tsuas muaj ob peb feeb ntawm kev ua haujlwm.
Kev tswj siab: Siv ib qho khoom siv clamp lossis hnyav los thov {{0 {}. {}}. 3Mpa}.}.
4. Kev ua kom zoo ntawm kev kho ib puag ncig
Qhov kub cuam tshuam: thaum nws qis dua 15 degree, lub sijhawm kho mob yuav txuas ntxiv los ntawm ntau dua 50%, thiab cov kub kub tuaj yeem siv los pab (zam qhov kev kub ceev
Kev tswj cov av noo: cyanacrylate kua nplaum yuav tsum muaj qee qhov noo kom ua rau cov tshuaj tiv thaiv, thiab ib qho me me ntawm cov dej txhawv tuaj yeem txau hauv ib puag ncig qhuav.
5. Tom qab Kev Tshawb Nrhiav Kev Tshawb Nrhiav
Kev Ntsuas Lub Zog: Ua rub tawm-tawm lossis twv twv kom meej 24 teev kom ntseeg tau tias kev tsim lub zog yog ua tiav.
Kev kho sealing: Thaum siv sab nraud, thov cov pob txha ua ke rau cov pob qij txha los tiv thaiv kom tsis txhob muaj dej nyob inittusion.
Cov teeb meem sib xws thiab cov kev daws teeb meem
Yog cov nplaum txheej dawb lossis bubbling?
Yog vim li cas: Cov kuab tshuaj tua tau sai dhau los yog cov av noo ambient siab dhau lawm.
Countermeasures: Siv cov kua nplaum kom qhuav, lossis ua haujlwm nyob rau ib puag ncig ntawm 15-25 degree thiab av noo hauv qab 50%.
Debonding tom qab siv ntev ntev?
Vim li cas: CoolMer kev tsiv teb tsaws lossis kev ntxhov siab nkees.
Cov tshuaj tiv thaiv: Siv los tiv thaiv cov kua nplaum yas (xws li epoxy hloov kua nplaum), lossis tsim cov tshuab kho tshuab los pab kho tshuab.
Pob tshab pvc atomizes tom qab ntawv?
Vim li cas: Qhov ntsuas hluav taws xob kom cov kua nplaum tsis sib xws uas yog PVC.
Countermeasceures: Xaiv UV kho cov kua nplaum lossis cov qib epoxy kua nplaum.
Kev Siv Ntawv Thov Kev Lag Luam
Kev Kho Kom Zoo Nkauj: ib qho haujlwm siv Polyurethane lo rau cover pvc ntoo board rau pob zeb ntsa, thiab tsis muaj qhov chaw txawb pob zeb rau kaum xyoo.
Tsheb tsim khoom: Hloov kho acrylic kua nplaum yog siv rau qhov ntsuas vaj huam sib txuas PVC tawv tsev, thiab tau dhau mus rau qhov siab thiab tsawg} degree rau 85 degree.
Cov cuab yeej kho mob: UV lo kua nplaum ua tiav tau seamless sealing seamless seeding ntawm lim lim dej thiab ua tau raws li FDA biocompatibility qauv.
Tag
PVC Kev Koom Tes Tsis yog qhov yooj yim "kua nplaum-lamination" txheej txheem, tab sis ib qho phiaj xwm kev tshawb fawb uas yuav tsum xaiv thiab kev tshawb fawb. Raws li ib tug kws tshaj lij kev ua haujlwm nrog ntau dua 20 xyoo ntawm kev ua lag luam, peb tsis tsuas yog muab cov kev daws teeb meem ntau ntxiv, cov khoom noj muaj txiaj ntsig zoo, thiab lwm yam). Los ntawm kev kuaj kuaj mob ntau lawm kev txhawb nqa ntau lawm, peb tau cog lus los pab cov neeg siv khoom kov txhua txoj kev sib tw sib tw.
Tham Pab Pawg Neeg Pab Pawg tam sim no kom tau txais cov qauv dawb thiab cov lus qhia ua haujlwm!
