1.What yog lub hauv paus ua rau xim fading / sib txawv?
Ultraviolet Rays nyob rau hauv lub hnub ci yog lub ntsiab culprit rau kev laus ntawm cov tshuaj pleev organic thiab qhov tsis zoo ntawm cov pigments. Ultraviolet Rays muaj lub zog siab thiab tuaj yeem rhuav tshem cov tshuaj sib txuas ntawm cob cov lwg me me hauv cov txheej thiab cov qauv ntawm cov xim lwg me me.
2.What yog qhov sib txawv hauv UV tsis kam ntawm cov resins sib txawv?
PVDF (polyvinylidene fluoride): qhov zoo tshaj UV tsis kam. CF txoj kev khi zog hauv nws cov qauv molecular tsis tshua muaj neeg (txog 485 KJ / Mol / Mol / Mol / Mol / Mol / Mol / Mol / Mol / Mol / Mol / Mol), uas tuaj yeem tiv thaiv cov kev puas tsuaj ntawm ultraviolet rays. PVDF Resin nws tus kheej yog ruaj khov thiab tsis tshua muaj qeeb qeeb. Cov txheej txheem PVDF yuav muab cov xim khaws cia zoo heev, thiab cov xim hloov pauv tau me me txawm tias tom qab lub hnub muaj zog muaj zog.
HDP (siab siab ruaj khov polyester): cov qauv molecular yog hloov kho ntawm dog dig polyester thiab cov huab cua ruaj khov, huab cua zoo nrog cov huab cua zoo ntxiv. Nws UV Kuj thiab cov xim khaws cia yog qhov zoo dua li cov polyester, ze rau theem Pvdf, tab sis tej zaum yuav qis dua PVDF ntev. Tus nqi ua nqi siab.
SMP (silicon tau hloov polyester): Silicone Cheebtsam tau qhia rau hauv polyester resin. Silicone cov ntsiab lus txhim kho cov kub ua kom tau thiab yooj ntawm txheej. Nws UV Kuj thiab xim khaws cov xim ua kom zoo dua li cov polyester, tab sis feem ntau tsis zoo li HDP thiab PVDF. Qhov siab dua cov ntsiab lus silicone, qhov zoo dua kev ua tau zoo.
Nruab Nrab Polyester: kev lag luam ntau tshaj plaws thiab siv tau, tab sis UV kuj yog qhov tsis muaj zog. Nyob rau hauv muaj zog lossis tas mus li ultraviolet hluav taws xob hluav taws xob, Resins thiab cov pigocations muaj kev cuam tshuam ntau dua los ntawm kev yees duab-oxidative (May darkening ua ntej kev pe hawm. Cov xim khaws cia tsis ntev.
3.Qhov twg yog qhov sib txawv ntawm cov xim qib thiab ruaj khov?
Txawm tias thaum siv tib lub resin (xws li PVDF), cov xim durability ntawm cov txheej yog nyob ntawm theem huab cua ntawm cov xim siv. Kev siv oxium (xws li cov ntaub ntawv tso rau sab nraum zoov ruaj khov Lawv kim dua. Pigments Cov xim zoo ib yam: Cov huab cua tsis zoo thiab kev hloov pauv nrawm nrawm lossis hloov pauv ntawm cov xim dawb (xws li liab rau liab, xiav mus grey). Ans Cov ntsiab lus tseem ceeb: Cov ntaub ntawv theem sab saum toj (xws li PVDF, HDP) yuav tsum tau ua khub nrog cov xim kev ua kom tiav kom ua tiav lawv cov xim zoo tshaj plaws. Cov pigments tsis zoo yuav rub cov kev ua tau zoo ntawm tag nrho cov kab ke.
4.What yog qhov sib txawv ntawm cov txheej txheem kev ncaj ncees thiab xaum tsis kam?
Cov khoom txiav txim siab lub peev xwm ntawm txheej los tiv thaiv ib puag ncig kev yaig (acid los nag, kuab paug, noo noo). Cov ntaub ntawv nrog cov muaj zog corrosion corrosion (xws li PVDF): Lawv tuaj yeem tiv thaiv cov xim hauv cov xim sab hauv los ntawm kev raug tshem tawm thiab ntxuav. Txawm hais tias saum npoo resin muaj hnub nyoog qeeb heev, nws kuj tseem tiv taus kev quav ntsha, thiab cov xim tsis yooj yim ploj vim yog "xauv" hauv txheej rau ib lub sijhawm ntev dua. Cov ntaub ntawv nrog cov tshuaj xeb tsis muaj zog (xws li txheej polyester): cov txheej sib txawv tau yooj yim dua los ntawm ib puag ncig, thiab cov saum npoo av sai dua. Caw tsis yog tsuas yog ua rau saum npoo saum npoo kom txo qis thiab ua rau cov xim xim, tab sis tseem ceeb tshaj, nws ua rau cov xim dawb (ua rau cov xim dawb (ua kom pom tseeb).
5.Qhov dab tsi sib txawv hauv cov xim tsis txaus?
PVDF txheej: Ua tau zoo tshaj plaws hauv cov qauv kev ntsuas (xws li QV, Xenon arc) thiab hauv kev thov tiag tiag. Feem ntau nws yog tus neeg lav ntxiv Δe <5 (qhov kev hloov pauv ntawm kev hloov uas tuaj yeem kuaj pom los ntawm tib neeg lub qhov muag) rau 10-15 xyoos lossis ntev dua. Ntau cov khoom lag luam zoo tseem tuaj yeem tswj tau cov tsos pom zoo rau 20-30 xyoo nyob rau hauv ib txwm muaj mob. Nws yog qhov tshwj xeeb rau qee zaus nrog cov yuav tsum tau ua rau cov xim muaj zog (xws li cov tsev kawm ntawv qib siab high-end-illmark). ◦ HDP txheej: Feem ntau cov xim retention, feem ntau tuaj yeem muab cov xim khaws cia xim zoo ntawm 7-15 xyoos lossis ntev dua, thiab kev xaiv tau zoo heev. ◦ SMP txheej: Cov xim khaws cia yog qhov zoo dua li cov polyester, tab sis tsis muaj zog dua HDP / PVDF. Nws yog feem ntau cia siab tias yuav muaj qhov nruab nrab zoo hauv nruab nrab hauv nruab nrab ib puag ncig (xws li 5-10 xyoo). Yog cov txheej polyester dog dig: cov xim ceev ceev yog tsawg tsawg. Nyob rau hauv lub hnub ci ib puag ncig, nws yuav ploj lossis discolor ntau dua li hauv ob peb xyoos (xws li 3-7 xyoo). Haum rau cov phiaj xwm nrog cov qes tsawg dua rau lub sijhawm ntev los yog tsawg peev nyiaj tsawg.