Sebopeho sa antifreeze le thepa ea eona
Tse ka hare
Tlhaloso e akaretsang le thepa
Sebopeho sa boleng ba antifreeze ha se fapane le li-analogue tsa kantle ho naha. Liphapang li teng feela peresenteng ea likarolo. Setsi se pholileng se na le metsi a silafalitsoeng kapa a senyehileng, ethanediol kapa propanediol alcohols, li-anti-corrosion additives le dae. Ho feta moo, ho eketsoa "buffer reagent" (sodium hydroxide, benzotriazole) le defoamer, polymethylsiloxane.
Joalo ka lipholisa tse ling, antifreeze e theola mocheso oa metsi a kristale le ho fokotsa ho ata ha leqhoa nakong ea leqhoa. Sena se thibela tšenyo ea baki ea sistimi ea ho futhumatsa enjene mariha. E na le lintho tse tlotsang le tse thibelang ho bola.
Ke eng e kenyellelitsoeng ho antifreeze?
Ho na le "diresepe" tse 'maloa tsa antifreeze - ka bobeli ka li-inorganic inhibitors le ho carboxylate kapa lobrid analogues. Sebopeho sa khale sa antifreeze se hlalositsoe ka tlase, hammoho le peresente le karolo ea likarolo tsa lik'hemik'hale.
- Li-glycols
Li-monohydric kapa polyhydric alcohols - ethylene glycol, propanediol, glycerin. Ha u sebelisana le metsi, ntlha ea leqhoa ea tharollo ea ho qetela e theoleloa, 'me ntlha e belang ea mokelikeli e boetse e eketseha. Litaba: 25–75%.
- Metsi
Ho sebelisoa metsi a deionized. Sepholisa se seholo. E tlosa mocheso libakeng tse futhumetseng tsa mosebetsi. Peresente - ho tloha ho 10 ho isa ho 45%.
- Boea
Tosol A-40 ke 'mala o moputsoa, e bontšang ntlha ea leqhoa (-40 ° C) le ntlha e belang ea 115 ° C. Ho boetse ho na le analogue e khubelu e nang le ntlha ea crystallization ea -65 ° C. Uranine, letsoai la sodium la fluorescein, le sebelisoa e le dae. Peresente: ka tlase ho 0,01%. Morero oa dae ke ho bona hore na pholiso e kae ka tanka ea katoloso, hape e thusa ho tseba ho lutla.
Li-additives - corrosion inhibitors le defoamers
Ka lebaka la theko e tlase, hangata ho sebelisoa li-inorganic modifiers. Ho boetse ho na le mefuta ea li-coolants tse thehiloeng ho li-organic, silicate le polymer composite inhibitors.
| Keketso | Sehlopha | Tse ka hare |
| Nitrites, nitrate, phosphates le sodium borates. Li-silicate tsa tšepe tsa alkali
| Inorganic | 0,01-4% |
| Li-acid tse peli, tse tharo tsa motheo tsa carboxylic le letsoai la tsona. Hangata ho sebelisoa li-succinic, adipic le decandioic acid. | Ea tlhaho | 2-6% |
| Li-polymer tsa silicone, polymethylsiloxane | Li-defoam tse entsoeng ka polymer (lobrid). | 0,0006-0,02% |
Li-defoam li hlahisoa ho fokotsa ho phophoma ha antifreeze. Foaming e thibela ho qhalana ha mocheso 'me e baka kotsi ea ho silafala ha li-bearings le likarolo tse ling tsa sebopeho ka lihlahisoa tsa kutu.
Boleng ba antifreeze le bophelo ba tšebeletso
Ka ho fetola 'mala oa antifreeze, motho a ka ahlola boemo ba pholileng. Antifreeze e ncha e na le 'mala o moputsoa o khanyang. Nakong ea ts'ebetso, mokelikeli o fumana 'mala o mosehla,' me 'mala o nyamela ka ho feletseng. Sena se etsahala ka lebaka la ho senyeha ha corrosion inhibitors, e leng sesupo sa tlhokahalo ea ho nkela se pholileng sebaka. Ha e le hantle, bophelo ba tšebeletso ea antifreeze ke lilemo tse 2-5.
