I-DOT 4. Izimpawu, ukwakheka, i-GOST
Okuqukethwe
Ukwakheka kwechashazi 4
I-DOT-4 brake fluid inezindawo ezinhle kakhulu zokulwa ne-antioxidant ngenxa yokuqukethwe okuphansi kwama-ejenti okuvimbela (ama-amines mahhala) kanye nenani le-pH ephezulu. Uketshezi lwe-DOT-1-DOT-4 luqukethe i-boric acid esters kanye ne-polypropylene glycol njengesisekelo.
- I-boric acid esters ye-polypropylene glycol ene-monosubstituted propylene glycol esters
Bakha ama-35-45% ngesisindo. Gcina izici zekhwalithi kanye nokuminyana kungakhathaliseki ukuthi izinga lokushisa lishintsha nokucindezela. Ingxenye eyinhloko ye-lubricant.
- i-ethyl carbitol
Imele i-ethyl ether efakwe endaweni eyodwa ye-diethylene glycol (ethoxyethane). Isebenza njenge-stabilizer ne-solvent yama-esters. Okuqukethwe - 2-5%.
- Ionol
Isengezo se-Antioxidant. Ivimbela ukutubeka kwama-borates emazingeni okushisa aphakeme. Ingxenye enkulu: 0,3–0,5%.
- I-Azimidobenzene ne-morpholine
ama-corrosion inhibitors. Inikeza umphumela wokuzinzisa i-pH. Okuqukethwe - 0,05–0,4%.
- ama-plasticizers
I-Orthophthalic acid dimethyl ester, i-phosphoric acid esters isetshenziswa njengesithambisi. Yenza kube lula ukukhubazeka futhi ukhulise ukuzinza okushisayo kwamayunithi e-polymer. Zinomsebenzi ongaphezulu. Isabelo singama-5-7%.
- I-Polypropylene glycol enesisindo esimaphakathi sama-500
Ngokuhlanganiswa ne-boron ether polycondensates, ithuthukisa izakhiwo zokugcoba zomkhiqizo. Okuqukethwe - 5%
- I-Tripropylene Glycol N-Butyl Ether
Ibopha izinhlayiya ze-hydrophobic fat-oil. Yehlisa ukungezwani kwendawo. Amaphesenti - kufika ku-15%.
Ngakho-ke, i-DOT-4 brake fluid ihlanganisa okuqukethwe okuphezulu kwe-borates, i-propylene glycol polyesters, i-plasticizers, i-anti-corrosion kanye nezithasiselo ze-antioxidant. Ngokwesilinganiso sephesenti elifanayo, izingxenye zihlinzeka ngezakhiwo ezinhle kakhulu ze-hydromechanical nezokugcoba kuyilapho zigcina izimfanelo zokusebenza zomkhiqizo kuzinga lokushisa elibanzi.
Izidingo ze-GOST
Ngokwezinga eliphakathi nendawo, i-DOT-4 iwuketshezi lwamabhuleki abilayo olusabalalisa kabusha imithwalo kumjikelezo womshini ovaliwe. Umbala - kusuka kokuphuzi okuphaphathekile kuya kokunsundu. Ayikhi i-sediment futhi ayiqukethe ukungcola okubonakalayo.
| Характеристика | Hamba |
| Ubuncane T indawo abilayo, °C | 230 |
| Ubuncane T ukuhwamuka koketshezi olunamanzi, ° С | 155 |
| Ukuzinza kwe-Hydrodynamic emazingeni okushisa aphakeme | 3 |
| Isichasisi se-Hydrogen | 7,5 - 11,5 |
| I-Kinematic viscosity ku-277K (40°C), i-St | 18 |
| Ukuminyana ngaphansi kwezimo ezijwayelekile | Akukhonjiwe |
Ngokwethula ama-polymers e-organosilicon (ama-silicates) nokunciphisa ingxenye ye-boric acid esters, kulula ukuthola uketshezi lwamabhuleki lwekilasi le-DOT-5. Ngenxa yezindawo zayo zokusebenza ezinhle kakhulu, i-DOT-4 hydraulic grease idumile emakethe, futhi ukwakheka kwayo kwamakhemikhali kuhlala kuthuthukiswa.
