Glycol Ether hauv Nres Nres Fluid
DOT 3, DOT 4 & DOT 5.1 chemistry piav qhia - uas glycol ethers tau siv, vim li cas cov ntsiab lus kub kub tseem ceeb rau kev nyab xeeb nres, thiab cov neeg tsim khoom xaiv cov kuab tshuaj zoo li cas.
1. Vim li cas Glycol Ethers siv hauv Nres Nres Fluid? 🚗
Niaj hnub nimno hydraulic braking systems xav tau cov kua dej uas muaj peev xwm ciaj sia nyob rau hauv huab cua txias: kub tshaj 200℃thaum lub zog braking, nruam raug rau ya raws, compatibility nrog roj hmab ntsaws ruaj ruaj, thiab ib tug ruaj khov viscosity nyob rau hauv ib tug dav kub ntawm -40℃mus rau ntau tshaj 180 degree. Tsis muaj ib qho hnyav hnyav ua tau raws li tag nrho cov kev cai no - tab sis ua tib zoo sib xyaw glycol ethers ua.
Glycol ethers raug xaiv rau kev tsim cov kua dej nres vim muaj plaub yam tseem ceeb:
Siab Boiling Point
Di- thiab triethylene glycol butyl ethers muaj cov ntsiab lus kub ntawm 230-280 degree, tswj cov dej ncaj ncees txawm tias thaum muaj xwm txheej nres.
Hygroscopic kam rau ua
Glycol-ether- cov kua dej raws li nqus dej noo maj mam thiab kwv yees - tiv thaiv kom tsis txhob muaj vapor kaw zoo dua li cov kua dej uas tawm tsam dej tag nrho.
Elastomer Compatibility
Glycol ether sib xyaw ua kom zoo yog sib xws nrog EPDM thiab SBR roj hmab ntsaws ruaj ruaj siv thoob plaws hauv lub nres nres thiab lub tog raj kheej.
Tsawg-Tsub Fluidity
Glycol ether sib tov nyob twj ywm ntawm −40 degree, ua tau raws li qhov qis -kub viscosity yuav tsum ntawm FMVSS 116 thiab ISO 4925.
💡 Koj Puas Paub?Tshaj 95% ntawm tag nrho cov neeg caij tsheb nres cov kua dej thoob ntiaj teb yog glycol ether-raws li (DOT 3, DOT 4, lossis DOT 5.1). Tsuas yog DOT 5 cov kua dej nres - cov khoom lag luam niche siv feem ntau hauv khaws cia lossis qhia tsheb - siv silicone es tsis yog glycol ethers.
2. Boiling Point & Nres Kev Nyab Xeeb: Vim Li Cas Nws Tseem Ceeb 🌡️
Lub ntsiab lus ntawm cov dej nres yog qhov kev nyab xeeb tshaj plaws - qhov tseem ceeb ntawm nws qhov kev qhia tshwj xeeb. Thaum cov dej nres boils hauv lub calliper, nws tsim vapor npuas. Tsis zoo li kua, vapor yogcompressible- nias lub brake pedal tsuas yog compresses lub vapor es tsis txhob xa lub zog mus rau lub nres nres. Qhov tshwm sim yog tam sim ntawd, ua tiav lub zog ntawm braking quab yuam: lub dreaded"spongy pedal"los yog, nyob rau hauv qhov mob hnyav, ua tiav nres nres.
2.1 Qhuav Boiling Point vs Wet Boiling Point
FMVSS 116 (Tebchaws Asmeskas tus qauv) qhia meejobCov ntsiab lus boiling point rau txhua qib DOT:
Ntsuas ntawm cov kua dej tshiab uas tsis muaj absorbed noo noo. Sawv cev rau qhov zoo tshaj plaws - rooj plaub kev ua tau zoo ntawm cov dej nres tshiab, tsis muaj paug.
Ntau yam: 205-270℃nyob ntawm qib DOT
Ntsuas tom qab cov kua tau nqus 3.5% dej los ntawm qhov hnyav (simulating 2-3 xyoos ntawm kev siv tiag tiag- ntiaj teb no). Qhov dej npau npau yog qhovtiag -worldkev ruaj ntseg benchmark.
Feem ntau: 140-185℃nyob ntawm qib DOT
⚠️ Yog vim li cas dej Boiling Point poob ntau heev
Glycol ether brake kua yog hygroscopic - lawv maj mam nqus noo noo los ntawm huab cua los ntawm nres kaw cov ntsaws ruaj ruaj thiab lub hau npog. Raws li cov ntsiab lus dej nce los ntawm 0% mus rau 3.5%, qhov kub ntawm qhov dej ntawm DOT 4 yog ib txwm poob los ntawm ~ 260℃mus rau ~ 155 degree. Qhov no yog vim li cas cov tuam txhab tsheb pom zoo kom hloov cov dej nres txhua 2 xyoos tsis hais txog mais - qhov chaw ntub dej, tsis yog qhov kub npau npau, yog qhov tiv thaiv koj thaum muaj xwm txheej ceev.
2.2 DOT Boiling Point Requirements ntawm ib nrais muag
Bar ntev yog piav qhia, proportional rau WBP txheeb ze rau DOT 5.1 siab tshaj.
3. DOT 3, DOT 4 & DOT 5.1 Specifications 📋
4. Ntsiab Glycol Ethers Siv hauv Nres Nres ⚗️
Peb qib glycol ether tswj hwm kev lag luam nres cov kua dej tsim tawm. Txhua yam yog E-series (ethylene glycol-raws li) - lawv cov polarity siab dua thiab hygroscopic tus cwj pwm yog qhov ua tau zoo hauv kev siv cov dej nres, vim nws tso cai tswj kev nqus dej ntau dua li kev sib cais theem txaus ntshai.
5. Hygroscopicity: Ob - Ntug ntaj 💧
Glycol ether brake kua yog hygroscopic - lawv tsis tu ncua nqus dej vapor los ntawm huab cua los ntawm microscopic permeation hla cov roj hmab ntsaws ruaj ruaj thiab lub hau npog. Qhov no feem ntau raug suav hais tias yog qhov tsis zoo, tab sis qhov tseeb nws yog qhov ua tib zoo ua haujlwm zoo.
✅ Yog vim li cas Hygroscopicity thiaj li pab tau
- Dej yog absorbedsib npaugthoob plaws hauv cov kua - tsis muaj dej dawb
- Dissolved dej lowers lub boiling point maj mam thiabkwv yees
- Tsis muaj kev pheej hmoo ntawm corrosion los ntawm cov dej dawb zaum ntawm cov ntsiab lus qis hauv qhov system
- Tso cai rau cov kws tshaj lij los ntsuas cov kua dej zoo nrog lub ntsuas kub kub yooj yim
⚠️ Vim Li Cas Hygroscopicity Yuav Tsum Tau Tswj
- Cov dej kub npau npau poob qis dua 2-3 xyoos hauv kev pabcuam
- Cov kua dej qub uas muaj cov ntsiab lus dej siab txaus ntshai vapor kaw hauv cov xwm txheej kub
- Cov kua dej yuav tsum yoghloov ntawm lub sijhawm, tsis yog topped
- Qhib cov thawv ntawm cov kuab tshuaj nres nqus dej sai sai - rov ua dua tam sim
🔬 Moisture Absorption Rate hauv Kev Pabcuam
6. Nres Nres Fluid Formulation Guide 🔧
Cov kua dej ua lag luam tsis yog ib qho glycol ether - nws yog ib qho kev sib xyaw ua ke. Cov glycol ether solvents feem ntau suav rau70-90% ntawm formulationlos ntawm qhov hnyav, nrog cov seem uas muaj cov tshuaj tiv thaiv corrosion, antioxidants, thiab viscosity modifiers.
| Cheebtsam | Ib txwm wt% | Muaj nuj nqi | Ntsiab Glycol Ether |
|---|---|---|---|
| Thawj qhov hnyav | 40–65% | Teem lub hauv paus boiling point, muab hygroscopic buffering, lub ntsiab cab kuj | DEGMBE |
| High-BP co- hnyav | 20–40% | Nce cov ntsiab lus qhuav thiab ntub dej rau DOT 4 / DOT 5.1 qib | TEGMBE |
| Viscosity modifier | 5–15% | Txo kinematic viscosity ntawm −40℃kom tau raws li DOT 5.1 txias-flow spec | TEGMME / DEGMME |
| Borate esters | 5–15% | Tsim complexes nrog absorbed dej, suppressing ntub boiling point poob | Tsis yog -glycol ether tivthaiv |
| Ntxiv pob | 1–5% | Corrosion inhibitors (tooj liab, zinc, hlau), antioxidants, pH buffers, roj hmab swelling agents | Tsis yog -glycol ether Cheebtsam |
💡 Formulation Note for Buyers:Thaum muab glycol ethers rau kev tsim cov kua dej nres, purity yog qhov tseem ceeb. Dawb acid cov ntsiab lus yuav tsum yog<0.05%, water content <0.1%, and colour (APHA) <10. Sinolook Chemical supplies brake-fluid-grade DEGMBE and TEGMBE with full COA documentation and can provide technical data sheets on request.
7. DOT 5 vs DOT 5.1: Qhov Tseem Ceeb Qhov txawv 🔍
Lub npe zoo sib xws ntawm DOT 5 thiab DOT 5.1 ua rau muaj kev tsis meej pem dav dav - thiab qhov ua yuam kev txaus ntshai. Txawm hais tias lawv cov npe zoo sib xws, cov no yog cov tshuaj lom neeg thiab ua haujlwm tsis sib xws.
DOT 5 - Silicone -raws li
- Base kua:polydimethylsiloxane(silicone yog')
- Tsis yog -hygroscopic - repels dej nkaus
- Tsis sib xws nrog ABS, ESP, lossis traction tswj tshuab
- Cov dej uas nkag mus rau hauv lub pas dej ua ke thiab tuaj yeem boil ntawm 100℃- txaus ntshai
- Siv nyob rau hauv: khaws cia classic tsheb, tub rog tsheb, qhia tsheb
- ❌ Tsis tuaj yeem sib xyaw nrog DOT 3, DOT 4, lossis DOT 5.1
DOT 5.1 - Glycol ether-raws li
- Base kua:glycol ether / borate ester sib tov
- Hygroscopic - absorbs dej nyab xeeb thiab sib npaug
- Tau tshaj ABS, ESP, tswj kev ruaj ntseg
- Tib roj hmab foob compatibility li DOT 3 thiab DOT 4
- Siv nyob rau hauv: niaj hnub kev ua tau zoo tsheb, motorsport, EVs / hybrids
- ✅ Tau tshaj (thiab miscible nrog) DOT 3 thiab DOT 4
⚠️ Ceeb toom tseem ceeb rau Formulators thiab End-Cov neeg siv:Tsis txhob sib tov DOT 5 (silicone) nrog cov kua glycol ether. Qhov sib xyaw ua ke tsim cov gel-zoo li nag lossis daus uas tuaj yeem thaiv cov kab nres thiab ua rau nres nres tag nrho. Cov thawv ntim zoo ib yam - ib txwm txheeb xyuas qib DOT ntawm daim ntawv lo ua ntej siv.
8. Tag Nrho DOT Brake Fluid Table 📊
| Khoom | DOT 3 | DOT 4 | DOT 5.1 | DOT 5 |
|---|---|---|---|---|
| Base kua | Glycol ether | Glycol ether | Glycol ether | Silicone |
| Min. qhuav BP | 205 degree | 230 degree | 260 degree | 260 degree |
| Min. ntub BP | 140 degree | 155 degree | 180 degree | N/A (tsis yog{0}}hygroscopic) |
| Visc. ntawm -40 degree | Tsawg dua lossis sib npaug li 1500 mm² / s | Tsawg dua lossis sib npaug li 1800 mm² / s | Tsawg dua lossis sib npaug li 900 mm² / s | Tsawg dua lossis sib npaug li 900 mm² / s |
| Hygroscopic | Yog lawm | Yog lawm | Yog lawm | Tsis muaj |
| ABS / ESP tau tshaj | Yog lawm | Yog lawm | Yog lawm | Tsis muaj |
| Miscible nrog lwm yam DOT | DOT 4, 5.1 | DOT 3, 5.1 | DOT 3, 4 | Tsis muaj |
| Hloov lub sijhawm | Txhua 1-2 xyoos | Txhua 2 xyoos | Txhua 2 xyoos | Txhua txhua 3-5 xyoos |
| Tej daim ntawv thov | Cov tsheb qub, tsheb kev lag luam | Feem ntau cov tsheb niaj hnub | Performance / EV / motorsport | Classic / khaws cov tsheb |
9. Sourcing Brake Fluid Grade Glycol Ethers los ntawm Sinolook 🏭
Sinolook Chemical tsim thiab xa tawm nres - kua- qib glycol ethers nrog cov lus qhia zoo tsim los ua kom tau raws li cov kev cai nruj nruj ntawm FMVSS 116 thiab ISO 4925 kev tsim ua haujlwm. Tag nrho cov khoom lag luam ntawm cov khoom lag luam yog muaj nrog cov ntaub ntawv zoo.
10. Cov lus nug uas nquag nug ❓
Q: Dab tsi glycol ether nyob hauv cov kua dej nres?
Ob lub ntsiab glycol ethers nyob rau hauv feem ntau cov kua nres yogDiethylene Glycol Monobutyl Ether(DEGMBE, CAS 112-34-5) thiabTriethylene Glycol Monobutyl Ether(TEGMBE, CAS 143-22-6). DOT 3 feem ntau siv DEGMBE; DOT 4 muab DEGMBE nrog TEGMBE; DOT 5.1 siv ntau dua ntawm TEGMBE thiab feem ntau suav nrogTriethylene Glycol Monomethyl Ether(TEGMME) raws li kev hloov kho viscosity.
Q: Puas yog glycol ether brake kua tib yam li glycol ether raws li cov kua nres?
Yog - cov nqe lus sib hloov tau. "Glycol ether based brake fluid" yog cov lus piav qhia kev siv hauv FMVSS 116 thiab SAE J1703 kom sib txawv DOT 3, 4, thiab 5.1 kua (tag nrho glycol ether -raws li) los ntawm DOT 5 kua (silicone-raws li). Hauv kev siv txhua hnub, "glycol ether brake fluid" txhais tau tias DOT 3, DOT 4, lossis DOT 5.1 khoom.
Q: Vim li cas glycol ether brake kua yuav tsum tau hloov tsis tu ncua?
Glycol ether kua yog hygroscopic - lawv nqus dej los ntawm qhov chaw nyob rau lub sijhawm dhau los ntawm cov ntsaws ruaj ruaj thiab lub hau npog. Raws li cov ntsiab lus dej nce ntxiv, qhov dej npau npau qis qis. DOT 4 kua dej nrog 3.5% cov ntsiab lus dej tuaj yeem muaj qhov kub npau npau ntawm tsuas yog 155 degree, piv rau qhov kub npau npau ntawm 250+℃thaum tshiab. Nyob rau hauv cov xwm txheej hnyav braking (roob qhovntsej thiaj tsis mob, kev tsav tsheb), cov kua dej tuaj yeem ncav cuag qhov kub ntawm qhov dej no -saturated fluid boils, ua rau vapor lock thiab nres nres. Feem ntau cov neeg tsim khoom pom zoo hloov pauv txhua 2 xyoos.
Q: Kuv puas tuaj yeem siv DOT 5.1 los ntawm DOT 4?
Yog - DOT 5.1 thiab DOT 4 yog cov tshuaj sib xyaw ua ke (ob leeg glycol ether-raws li) thiab tuaj yeem sib xyaw. DOT 5.1 muab cov ntsiab lus qhuav thiab ntub dej ntau dua thiab zoo dua qis - qhov kub thiab txias. Yog tias koj lub tsheb qhia txog DOT 4, hloov mus rau DOT 5.1 feem ntau yog kev hloov kho kom zoo. Txawm li cas los xij, nco ntsoov sab laj nrog koj lub tsheb daim ntawv qhia kev pabcuam, vim qee lub tshuab tau ntsuas rau cov kua dej viscosity tshwj xeeb.
Q: Dab tsi yog qhov tsawg kawg nkaus txiav txim kom muaj nuj nqis rau cov kua dej nres DEGMBE los ntawm Sinolook?
Sinolook Chemical muab cov kua dej nresDiethylene Glycol Monobutyl EtherthiabTriethylene Glycol Monobutyl Etherlos ntawm 1 × 200-litre nruas rau cov qauv / kev soj ntsuam kev txiav txim, nrog kev lag luam ntim los ntawm 1 IBC tote (1,000L) lossis puv FCL ISO tank (20-24 tonnes). Hu rau peb pab neeg muag khoom rau tus nqi tam sim no thiab muaj.
Tau txais cov lus hais los ntawm Sinolook Chemical
Peb muab DEGMBE, TEGMBE, thiab TEGMME los nres cov kua dej tsim tawm thoob ntiaj teb. Txhua qib muaj nrog tag nrho COA, SDS, thiab REACH cov ntaub ntawv. Tus nqi ntau muaj rau FCL kom muaj nuj nqis.
