DOT 4. Litšobotsi, sebopeho, GOST
Tse ka hare
Moetso letheba 4
Mokelikeli oa brake oa DOT-4 o na le thepa e ntle ea antioxidant ka lebaka la litaba tse tlase tsa li-amine tsa mahala (li-amine tse sa lefelloeng) le boleng bo phahameng ba pH. Mekelikeli DOT-1-DOT-4 e na le li-ester tsa boric acid le polypropylene glycol e le motheo.
- Boric acid esters ea polypropylene glycol e nang le monosubstituted propylene glycol esters
Li etsa 35-45% ka boima ba 'mele. Boloka litšoaneleho tsa boleng le boima ho sa tsotellehe liphetoho tsa mocheso le khatello. Karolo e ka sehloohong ea lubricant.
- ethyl carbitol
E emela monosubstituted ethyl ether ea diethylene glycol (ethoxyethane). E sebetsa e le stabilizer le solvent bakeng sa esters. Likahare - 2-5%.
- Ionol
Sehlahisoa sa Antioxidant. E thibela ho khathala ha li-borates nakong ea mocheso o phahameng. Karolo ea boima: 0,3-0,5%.
- Azimidobenzene le morpholine
corrosion inhibitors. E fana ka phello e tsitsitseng ea pH. Litaba - 0,05â0,4%.
- li-plasticizers
Orthophthalic acid dimethyl ester, phosphoric acid esters e sebelisoa e le setlolo se bonolo. Ho thusa ho holofala le ho eketsa botsitso ba mocheso oa likarolo tsa polymer. Li na le ts'ebetso e kaholimo. Kabelo ke 5-7%.
- Polypropylene glycol e nang le boima bo tloaelehileng ba 500
Ha e kopane le boron ether polycondensates, e ntlafatsa thepa ea lubricating ea sehlahisoa. Litaba - 5%
- Tripropylene glycol N-butyl ether
E kopanya likaroloana tsa oli ea hydrophobic. E fokotsa tsitsipano e ka holimo. Peresente - ho fihlela ho 15%.
Kahoo, mokelikeli oa brake oa DOT-4 o kenyelletsa litaba tse ngata tsa borate, li-polyester tsa propylene glycol, li-plasticizers, anti-corrosion le li-additives tsa antioxidant. Ka tekanyo e ts'oanang ea liperesente, likarolo li fana ka thepa e ntle haholo ea hydromechanical le lubricating ha li ntse li boloka litšoaneleho tsa ho sebetsa tsa sehlahisoa maemong a mangata a mocheso.
litlhoko tsa GOST
Ho latela maemo a lipakeng tsa linaha, DOT-4 ke mokelikeli oa brake o belang haholo bakeng sa ho tsamaisa meroalo bocha ka potoloho ea mochini o koetsoeng. Mmala - ho tloha mosehla o mosehla ho ea ho sootho. Ha e etse sediment ebile ha e na litšila tse bonoang.
| Litšobotsi | Norma |
| Bonyane T ntlha e belang, °C | 230 |
| Bonyane T vaporization bakeng sa mokelikeli o nang le metsi, ° С | 155 |
| Hydrodynamic botsitso maemong a phahameng a mocheso | 3 |
| Tlhaloso ea Hydrogen | 7,5 - 11,5 |
| Kinematic viscosity ho 277K (40 ° C), St | 18 |
| Density tlas'a maemo a tloaelehileng | Ha ea ngolisoa |
Ka ho hlahisa li-polymers tsa organosilicon (li-silicate) le ho fokotsa karolo ea boric acid ester, ho bonolo ho fumana brake fluid ea sehlopha sa DOT-5. Ka lebaka la thepa ea eona e ntle ea ts'ebetso, grease ea hydraulic ea sehlopha sa DOT-4 e tumme 'marakeng,' me metsoako ea eona ea lik'hemik'hale e lula e ntlafatsoa.
