Ivanishi
INGCACISO
Idiphozithi ebhityileyo, eqinileyo, ekhazimlayo, enganyibilikiyo kwi-oyile, equlunqwe ikakhulu yintsalela yezinto eziphilayo, kwaye eyona nto ichazwa ngokulula ngobunzulu bombala.Ayisuswa lula ngokusula ngento yokosula ecocekileyo, eyomileyo, ethambileyo, engenalint kwaye imelana nezinyibilikisi ezihluthayo.Umbala wayo unokwahluka, kodwa udla ngokuvela kwigrey, brown okanye amber hues.Umthombo: ASTM D7843-18
YENZA NJANI ISI-VARNISH
Ngokuqhelekileyo, izithambisi ziyehla enkonzweni ngenxa yekhemikhali, i-thermal, uxinzelelo lomatshini olukhawulezisa ukusabela kwe-oyile oxidation kunye nokwakheka kwevanishi kuqala nge-oxidation.
-Yekhemikhali:Iimpendulo ezininzi zeekhemikhali zenzeka njengoko iminyaka yeoli.I-oxidation ye-oyile ikhokelela kwiimveliso ezininzi zokubola, kubandakanywa i-particle kunye ne-acids ezinganyibilikiyo.Ubushushu kunye nobukho beenkcukacha zentsimbi (intsimbi, ubhedu) kukhawulezisa inkqubo.Ukongeza, iioyile ezine-aerated kakhulu zichaphazeleka ngakumbi kwi-Oxidation.
-Thermal:Xa amaqamza omoya angena kwioli, ukungaphumeleli okukhulu kweoli kunokuthi kwenzeke ngenxa yeemeko ezaziwa ngokuba yi-PID (i-Pressure-induced Dieseling) Okanye i-PTG (i-Pressure-induced Thermal Degradation).Amaqondo obushushu asekuhlaleni adlula i-538℃ xa amaqamza omoya esiwa phantsi koxinzelelo oluphezulu, nto leyo ekhokelela ekuthotyweni kobushushu.
-Oomatshini:“Ukucheba” kwenzeka xa iimolekyuli ze-oyile zikrazuka njengoko zihamba phakathi kwemiphezulu eshukumayo.
I-Polymerization yenzeka njengoko iimveliso ze-oxidation kunye neempendulo ezongezelelweyo zidibanisa kwaye zenze iimolekyuli ezinde ezinobunzima obuphezulu bemolekyuli.Ezi molekyuli zi-polarized.Izinga le-polymerization ye-molecular ixhomekeke kwiqondo lokushisa kunye nokuxinwa kweemveliso ze-oxidation.
Ibonisa ukukwazi ukutshabalalisa iamolekyu ngaphakathi kwesisombululo esichaphazelekayo ngokuthe ngqo kwiqondo lokushisa.Njengoko imveliso ye-oxidation yenziwa ngokuqhubekayo, ulwelo lusondele kwindawo yokugcwala.
Inkqubo ejongene nokubekwa kwe-varnish ye-particulate iyabuyiswa.Kwiimeko ezininzi, xa ivanishi ifom, inokuphinda ifakwe kulwelo kwaye iqhekeke ukuba ukunyibilika kwe-lubricant kuyanda.
Ulwelo alunakunyibilikisa iimolekyuli ezintsha zepolymerized xa ubushushu bufika kwindawo okanye ulwelo ludlula kwiindawo ezipholileyo (Ukunyibilika kuncipha xa ubushushu buhla).Njengoko iimveliso ezongezelelweyo ze-oxidative zingenakubanjwa kwisisombululo, zikhupha kwaye zenze amaqhekeza athambileyo (i-sludge / varnish).
Amasuntswana athambileyo anganyibilikiyo kulula ukuba agglomerate omnye komnye kwaye enze amasuntswana amakhulu polarized kunye nobunzima eliphezulu molecular.
Izinyithi zithande ukuba nencam ngakumbi kunala masuntswana amhlophe ukuze aqokelele ngokulula kumphezulu wesinyithi (imimandla epholileyo, ucoceko olucolekileyo, ukuhamba okuphantsi) apho umaleko oncangathi (iVarnish) yenziwe kwaye itsale amasuntswana amaninzi abambelela kuyo.Yenze njalo ivanishi
Varnish Harzds
◆Ukuncamathela nokubamba iivalvu
◆Iibheringi ezishushu
◆Ukuncipha kokusebenza kwabatshintshi bobushushu
◆Ukonyuka kokunxiba kumalungu abalulekileyo kunye neevalvu
◆Ubomi obufutshane boomatshini, i-lubricant, izihluzi kunye netywina
INDLELA YOKUFUMANA I-VARNISH
Ngenxa yeendleko zesiphumo sobukho bevarnish, Kuya kufuneka ubeke iliso kwimeko ye-varnish enokubakho kwinkqubo yakho yokuthambisa.Obona buchule bamkelwe ngokubanzi buI-Membrane Patch Colorimetry(MPC ASTM7843).Le ndlela yovavanyo ikhupha ungcoliseko olunganyibilikiyo kwisampulu ye-oyile ye-injini yenkonzo kwipetshi (ene-0.45µm inwebu) kunye nombala we-membrane patch ihlalutywa nge-spectrophotometer.Iziphumo zixelwe njengexabiso le-E.
IZISOMBULULO ZOKUSUSWA KWEVARNISH
| Umzekelo | IVarnish enyibilikayo | IVarnish enganyibilikiyo | Amanzi |
|---|---|---|---|
| WVDJ | √ | √ | √ |
| WVD-II | √ | √ | |
| WJD | √ | ||
| WJL | √ |