Varnish

Nkọwa

Nkwụnye ego dị gịrịgịrị, siri ike, na-adọrọ adọrọ, nke na-enweghị mmanụ, nke sitere na ihe fọduru nke organic mejupụtara, yana nke a na-akọwapụta ngwa ngwa site na ike agba.A naghị ewepụ ya ngwa ngwa site na iji ihe dị ọcha, kpọrọ nkụ, dị nro, ihe nhicha na-enweghị lint, ọ na-eguzogidekwa ihe mgbaze juru.Agba ya nwere ike ịdị iche, mana ọ na-apụtakarị na agba ntụ, aja aja ma ọ bụ amber.Isi mmalite: ASTM D7843-18

Kedu ka esi etolite varnish

A, mmanụ aṅụ na-emebi ọrụ n'ihi kemịkalụ, thermal, stress mechanical nke na-eme ka mmeghachi omume nke oxidation mmanụ na-eme ka ọ dịkwuo elu na nhazi nke varnish na-amalite site na oxidation.

Nkeji 1: Oxidation

- kemịkalụ:Ọtụtụ mmeghachi omume kemịkalụ na-eme ka mmanụ ahụ dị afọ.Oxidation nke mmanụ na-eduga n'ọtụtụ ngwaahịa ire ere, gụnyere ụmụ irighiri ihe na acid na-adịghị edozi.Okpomọkụ na ọnụnọ nke nkọwa igwe (Iron, ọla kọpa) na-eme ka usoro ahụ dịkwuo elu.Ọzọkwa, mmanụ na-ekuku nke ukwuu na-enwekarị ike ịnweta Oxidation.

- Thermal:Mgbe ikuku ikuku na-abanye n'ime mmanụ ahụ, oke ọdịda nke mmanụ nwere ike ime n'ihi ọnọdụ a maara dị ka PID (Pressure-induced Dieseling) ma ọ bụ PTG (Pressure-induced Thermal Deradation).Okpomọkụ mpaghara ahụ karịrị 538 ℃ mgbe ikuku ikuku na-ada n'okpuru nrụgide dị elu, nke na-edugakwa na mbibi okpomọkụ.

- Mechanical:"Ịkpachasị ihe" na-eme mgbe a na-adọwa ụmụ irighiri mmanụ ka ha na-aga n'etiti ebe igwe na-akpụ akpụ.

Nkeji 2: Polymerization

Polymerization na-apụta dị ka ngwaahịa oxidation & mmeghachi omume mgbakwunye na-ejikọta wee mepụta ụmụ irighiri akwara ogologo nwere ibu molekụla dị elu.Mkpụrụ ndụ ndị a bụ polared.Ọnụego nke polymerization molekụla dabere na okpomọkụ na ntinye nke ngwaahịa nke oxidation.

Nkeji 3: Solubility

Ọ na-egosi ike igbari ụmụ irighiri ihe n'ime ngwọta nke okpomọkụ na-emetụta ozugbo.Dị ka ngwaahịa nke oxidation na-aga n'ihu na-emepụta, mmiri mmiri dị nso na ebe saturation.

Usoro maka ntinye nke particulate varnish na-agbanwe agbanwe.N'ọtụtụ ọnọdụ, ozugbo varnish na-etolite, a ga-etinyeghachi ha n'ime mmiri ahụ wee daa ma ọ bụrụ na solubility nke mmanu na-abawanye.

Nkeji 4: Mmiri ozuzo

Mmiri ahụ enweghị ike igbari mkpụrụ ndụ polymerized ọhụrụ ma erute ebe saturation ma ọ bụ mmiri na-agafe na mpaghara dị jụụ (Ihe solubility na-ebelata mgbe okpomọkụ dara).Ebe ọ bụ na enweghị ike ijide ngwaahịa ndị ọzọ oxidative na ngwọta, ha na-ebuli ma na-emepụta ahụ dị nro (sludge / varnish).

Nkeji 5: Agglomeration

The insoluble soft ahụ dị mfe agglomerate ọ bụla ọzọ na-etolite ibu polarized ahụ na elu molekụla arọ.

Agba 6: Varnish kpụrụ

Ọla ndị ọzọ polar karịa ndị a polarized ahụ nke mere na ha na-adị mfe imubanye n'elu metal elu (oyi zones, mma nwechapụ, ala eruba) ebe a nnyapade oyi akwa (Varnish) na-guzobere na-adọta ndị ọzọ ahụ rube isi na ya.Ọ bụ otú ahụ ka varnish si malite

Varnish Harzds

◆Ịrapara na ijide valves

◆Oke ekpo oke ọkụ

◆Mbelata arụmọrụ nke ndị na-ekpo ọkụ ọkụ

◆Mmụba iyi na akụrụngwa dị oke mkpa na valvụ

◆Ogologo oge ndụ igwe, mmanu, nzacha na akara

Uzo esi achọpụta VARNISH

N'ihi nsonaazụ dị oke ọnụ nke ọnụnọ varnish, ị ga-enyocha ọnọdụ nke ike varnish na sistemụ mmanụ gị.Usoro kachasị nakweere bụMembrane Patch Colorimetry(MPC ASTM7843).Usoro nnwale a na-ewepụta ihe ndị na-adịghị ahụkebe site na nlele mmanụ turbine na-arụ ọrụ na patch (nwere akpụkpọ ahụ 0.45µm) na ụcha akpụkpọ ahụ na-enyocha site na spectrophotometer.A na-akọ nsonaazụ ya dị ka uru ΔE.

Ngwọta maka iwepụ VARNISH

Nlereanya	Varnish soluble	Varnish na-adịghị edozi	Mmiri
WVDJ	√	√	√
WVD-II	√	√
WJD		√
WJL		√