DOT 4. Tilmaamaha, halabuurka, GOST
Dhibicda curinta 4
Dareeraha biriiga ee DOT-4 waxa uu leeyahay sifooyin ka hortag ah oo aad u wanaagsan taas oo ay ugu wacan tahay maadada hoose ee wakiilada kaydinta (amines bilaashka ah) iyo qiimaha pH sare. Dareeraha DOT-1-DOT-4 waxay ka kooban yihiin boric acid esters iyo polypropylene glycol oo saldhig u ah.
- Boric acid esters ee polypropylene glycol oo leh monobstituted propylene glycol esters
Waxay ka kooban yihiin 35-45% miisaan ahaan. Ilaali sifooyinka tayada iyo cufnaanta iyada oo aan loo eegin isbeddellada heerkulka iyo cadaadiska. Qaybta saliidda ee ugu weyn.
- ethyl karbitol
Waxay ka dhigan tahay ethyl ether-ka la beddelay ee diethylene glycol (ethoxyethane). Wuxuu u shaqeeyaa sidii xasiliye iyo dareere esters. Waxa ku jira - 2-5%.
- Ionol
Antioxidant wax lagu daro. Waxay ka hortagtaa gubashada borates ee heerkulka sare. Jajabka tirada: 0,3-0,5%.
- Azimidobenzene iyo morpholine
daxalka inhibitors. Waxay bixisaa saamaynta pH ee xasilinta. Nuxurka - 0,05-0,4%.
- balaastikada
Orthophthalic acid dimethyl ester, phosphoric acid esters ayaa loo isticmaalaa sidii jilciya. Fududeynta qallafsanaanta oo kordhi xasilloonida kulaylka unugyada polymer. Waxay leeyihiin dhaqdhaqaaq dusha sare ah. Saamigu waa 5-7%.
- Polypropylene glycol oo celcelis ahaan miisaankeedu yahay 500
Marka lagu daro boron ether polycondensates, waxay hagaajinaysaa dufanka alaabta. Waxa ku jira - 5%
- N-butyl ester of trippylene glycol
Waxay xidhaa qaybaha saliidda dufanka leh ee hydrophobic. Waxay yaraynaysaa xiisadda dusha sare. Boqolkiiba - ilaa 15%.
Haddaba, dareeraha biriiga ee DOT-4 waxa ka mid ah maado aad u badan oo borates ah, propylene glycol polyesters, balaastiijiyeyaasha, ka hortagga daxalka iyo waxyaalaha lagu daro antioxidants. Saamiga boqolkiiba la mid ah, qaybuhu waxay bixiyaan sifooyin biyo-mareeno ah oo aad u fiican iyadoo la ilaalinayo tayada shaqada ee badeecada heerkul ballaadhan.
shuruudaha GOST
Marka loo eego halbeegga dawlad-goboleedka, DOT-4 waa dareere bireega ah oo karkarinaya dib-u-qaybinta culeyska wareegga farsamada xiran. Midabka - laga bilaabo jaalle cirro leh ilaa bunni. Ma samaynayo dhigaal oo kuma jiraan wasakhnimo muuqaal ah.
| Характеристика | Norm |
| Ugu yaraan T barta karkarinta, °C | 230 |
| Ugu yaraan T uumiga dareeraha fuuqsan, °C | 155 |
| Xasilloonida Hydrodynamic ee heerkulka sare | 3 |
| Jirka Hydrogen | 7,5 - 11,5 |
| Viscosity Kinematic at 277K (40°C), St | 18 |
| Cufnaanta xaaladaha caadiga ah | Aan la tilmaamin |
Marka la soo bandhigo organosilicon polymers (silicates) iyo yaraynta saamiga boric acid esters, way fududahay in la helo dareeraha biriiga ee fasalka DOT-5. Iyada oo ay ugu wacan tahay sifooyinka wanaagsan ee waxqabadka, dufanka DOT-4 hydraulic dufan ayaa caan ku ah suuqa, iyo ka koobnaanta kiimikada si joogto ah ayaa loo wanaajinayaa.
