DOT 4. Njirimara, mejupụtara, GOST
Ntụpọ ihe mejupụtara 4
Mmiri breeki DOT-4 nwere ezigbo antioxidant Njirimara n'ihi obere ọdịnaya nke ndị na-ebufe ihe (amines efu) yana uru pH dị elu. Liquid DOT-1-DOT-4 nwere boric acid esters na polypropylene glycol dị ka ntọala.
- Boric acid esters nke polypropylene glycol nwere mono dochie anya propylene glycol esters.
Ha na-eme 35-45% site na ibu. Debe njirimara àgwà na njupụta n'agbanyeghị mgbanwe okpomọkụ na nrụgide. Isi ihe mmanu mmanu.
- ethyl carbitol
Na-anọchi anya ethyl ether mono dochie anya diethylene glycol (ethoxyethane). Na-arụ ọrụ dị ka stabilizer na ihe mgbaze maka esters. Ọdịnaya - 2-5%.
- Ionol
Ihe mgbakwunye antioxidant. Na-egbochi ike ọgwụgwụ nke borates na okpomọkụ dị elu. Iberibe oke: 0,3-0,5%.
- Azimidobenzene na morpholine
ihe mgbochi corrosion. Na-enye mmetụta nkwụsi ike pH. Ọdịnaya - 0,05-0,4%.
- plasticizers
Orthophthalic acid dimethyl ester, phosphoric acid esters na-eji dị ka ihe nro. Mee ka nrụrụ ahụ dị mfe ma welie nkwụsi ike nke okpomọkụ nke nkeji polymer. Ha nwere ọrụ elu. Oke ya bụ 5-7%.
- Polypropylene glycol nwere nkezi ịdị arọ 500
Na mgbakwunye na boron ether polycondensates, ọ na-eme ka mmanu ngwaahịa ahụ dịkwuo mma. Ọdịnaya - 5%
- N-butyl ester nke tritropylene glycol
Na-ejikọta hydrophobic abụba-mmanụ ahụ. Na-ebelata esemokwu elu. Pasent - ruo 15%.
Ya mere, mmiri breeki DOT-4 gụnyere nnukwu ọdịnaya nke borates, propylene glycol polyesters, plasticizers, anti-corrosion and antioxidant additives. N'otu nha pasentị yiri ya, ihe ndị ahụ na-enye ezigbo hydromechanical na lubricating Njirimara mgbe ha na-ejigide àgwà ọrụ nke ngwaahịa ahụ na oke okpomọkụ.
GOST chọrọ
Dịka ọkọlọtọ interstate siri dị, DOT-4 bụ mmiri breeki na-esi elu maka ikesa ibu na sekit igwe mechiri emechi. Agba - site na icha mmirimmiri odo na agba aja aja. A naghị emepụta sedimenti ma ọ nweghị ihe adịghị arụ ọrụ a na-ahụ anya.
| Характеристика | Norma |
| Opekempe T ebe esi mmiri ọkụ, Celsius C | 230 |
| Opekempe T vaporization maka mmiri mmiri hydrated, Celsius C | 155 |
| Hydrodynamic kwụsie ike na elu okpomọkụ | 3 |
| Hydrogen mmezi | 7,5 - 11,5 |
| Kinematic viscosity na 277K (40°C), St | 18 |
| Njupụta n'okpuru ọkọlọtọ ọnọdụ | Edeghị aha ya |
Site na iwebata organosilicon polymers (silicates) na ibelata oke nke esters boric acid, ọ dị mfe ịnweta mmiri breeki nke klas DOT-5. N'ihi njirimara arụmọrụ ya dị mma, DOT-4 hydraulic griiz na-ewu ewu na ahịa, a na-emeziwanye ihe mejupụtara ya mgbe niile.
