Varnish

BISOBANURO

Ikintu cyoroshye, gikomeye, cyoroshye, amavuta-adashobora gushonga, agizwe ahanini nibisigara kama, kandi byoroshye gusobanurwa nuburemere bwamabara.Ntabwo byoroshye gukurwaho no guhanagura ibikoresho bisukuye, byumye, byoroshye, bidafite lint kandi bihanagura ibishishwa byuzuye.Ibara ryarwo rirashobora gutandukana, ariko mubisanzwe bigaragara mubururu, umukara cyangwa amber.Inkomoko: ASTM D7843-18

UKO VARNISH YASHYIZWEHO

Mubisanzwe, amavuta yangirika muri serivisi bitewe nubumara, ubushyuhe, ubukanishi bwihutisha reaction ya okiside yamavuta hanyuma imiterere ya varish itangirana na okiside.

Icyiciro cya 1: Oxidation

-Imiti:Imiti myinshi yimiti ibaho uko amavuta asaza.Oxidisation yamavuta iganisha ku bicuruzwa byinshi byangirika, harimo uduce duto duto na acide.Shyushya no kuba hari ibyuma byihariye (Icyuma, Umuringa) byihutisha inzira.Byongeye kandi, amavuta ahumeka cyane birashoboka cyane kuri Oxidation.

-Ubushyuhe:Iyo umwuka mwinshi winjiye mumavuta, kunanirwa gukabije kwamavuta bishobora kubaho bitewe nuburyo buzwi nka PID (Pressure-induced Dieseling) Cyangwa PTG (Imyuka iterwa na Thermal Degradation).Ubushyuhe bwaho burenga 538 ℃ iyo umwuka mwinshi uguye munsi yumuvuduko mwinshi, ibyo bikaba biganisha no kwangirika kwubushyuhe.

-Imashini:“Kogosha” bibaho iyo molekile zamavuta zashwanyaguritse uko zigenda hagati yimiterere yimashini.

Icyiciro cya 2: Polymerisation

Polymerisation ibaho nkibicuruzwa bya okisideya & reaction yinyongera ikomatanya ikarema molekile ndende-ndende hamwe nuburemere buke bwa molekile.Izi molekile zifite polarize.Igipimo cya polymerisiyumu iterwa nubushyuhe hamwe nubushuhe bwibicuruzwa bya okiside.

Icyiciro cya 3: Gukemura

Irerekana ubushobozi bwo gushonga molekile mubisubizo byatewe nubushyuhe.Nkuko ibikomoka kuri okiside bikomeza kuremwa, amazi ari hafi yo kwiyuzuzamo.

Inzira ishinzwe gushira ibintu bya varish birahinduka.Mu bihe byinshi, iyo imiterere ya langi, irashobora gusubizwa mumazi hanyuma igasenyuka niba ibibyibushye byiyongera.

Icyiciro cya 4: Imvura

Amazi ntashobora gushonga molekile nshya ya polymerized mugihe cyo kwiyuzuzamo igeze cyangwa amazi akanyura muri zone ikonje (Ubushyuhe buragabanuka iyo ubushyuhe bugabanutse).Nkuko ibicuruzwa byongera okiside bidashobora gufatwa mubisubizo, biragwa hanyuma bigakora uduce duto duto (sludge / varnish).

Icyiciro cya 5: Gukusanya

Ibice byoroshye bitangirika byoroshye guhuriza hamwe no gukora ibice binini bya polarize bifite uburemere buke bwa molekile.

Icyiciro cya 6: Varnish yashizweho

Ibyuma ni polarike kurenza ibyo bice bya polarize kuburyo byegeranya byoroshye hejuru yicyuma (zone ikonje, neza neza, gutembera neza) aho hashyizweho igiti gifatika (Varnish) kandi kigakurura uduce twinshi tuyubahiriza.Nuburyo bwo kwisiga

Varnish Harzds

◆Gufata no gufata indangagaciro

◆Ubushyuhe bukabije

◆Kugabanuka kwimikorere yubushyuhe

◆Kwiyongera kwambara kubintu bikomeye na valve

◆Igihe kigufi cyubuzima bwimashini, amavuta, akayunguruzo na kashe

UBURYO BWO KUBONA VARNISH

Bitewe ningaruka zihenze zo kwisiga, Ugomba gukurikirana imiterere ya varish muri sisitemu yo gusiga.Uburyo bukoreshwa cyane niMembrane Patch Colorimetry(MPC ASTM7843).Ubu buryo bwo kwipimisha bukuramo umwanda udashobora gukurwa mubyitegererezo byamavuta ya turbine muri serivisi (hamwe na 0.45µm membrane) hanyuma ibara ryibibabi bigasesengurwa na spekitifotometero.Ibisubizo byatangajwe nka ΔE agaciro.

UMUTI WO GUKURAHO VARNISH

Icyitegererezo	Varnish	Varnish idashobora gushonga	Amazi
WVDJ	√	√	√
WVD-II	√	√
WJD		√
WJL		√