Ib qho qauv siv los ua cov khoom siv tiv thaiv hluav taws rau SK Polyester ES500 (kev ntsuas UL94 V0).
I. Txoj Kev Tsim Qauv
- Kev Sib Txuas Lus ntawm Cov Khoom Siv
- SK Polyester ES500: Ib hom thermoplastic polyester uas muaj qhov kub ua haujlwm ib txwm yog 220–260°C. Cov nplaim taws yuav tsum tiv taus qhov kub no.
- Cov Kev Cai Tseem Ceeb: Sib npaug ntawm qhov hluav taws kub tsis kam (V0), cov khoom siv kho tshuab (lub zog tensile / cuam tshuam), thiab kev ua haujlwm fluidity.
- Synergistic Flame Retardant System
- Ultrafine Aluminium Hydroxide (ATH): Tiv thaiv hluav taws kub thawj zaug, ua kom lub cev qhuav dej. Kev thauj khoom yuav tsum sib npaug ntawm kev tiv thaiv hluav taws kub thiab cov khoom siv kho tshuab.
- Aluminium Hypophosphite: Ua haujlwm ua ke nrog ATH los tsim cov phosphorus-aluminium synergistic effect, txhim kho qhov zoo ntawm cov char.
- Zinc Borate: Ua kom cov char enhancer, tswj cov pa luam yeeb, thiab tsim ib qho kev thaiv ntom ntom nrog ATH.
- MCA (Melamine Cyanurate): Tiv thaiv hluav taws kub hauv theem roj, ua rau cov pa oxygen yaj thiab tiv thaiv kev yaj kom tsis txhob ntws.
II. Cov Qauv Pom Zoo (Feem Pua Qhov Hnyav)
| Cheebtsam | Qhov sib piv | Cov Ntawv Sau Ua Haujlwm |
|---|---|---|
| SK Polyester ES500 | 45–50% | Cov roj hmab puag; xaiv qib siab-fluidity los them rau qhov viscosity ntawm cov khoom sau. |
| Ultrafine ATH | 25–30% | Hloov kho qhov chaw nrog tus neeg sawv cev silane coupling (KH-550), D50 < 3 μm. |
| Aluminium Hypophosphite | 10–12% | Tiv taus kub (>300°C), sib xyaw ua ntej nrog ATH thiab ntxiv ua ntu zus. |
| Zinc Borate | 6–8% | Ntxiv nrog MCA kom tsis txhob muaj kev puas tsuaj rau cov qauv uas raug txiav siab heev. |
| MCA | 4–5% | Cov txheej txheem kub <250 ° C, kev tawg qeeb qeeb. |
| Cov tshuaj dispersant | 2–3% | Cov tshuaj dispersant uas sib xws nrog polyester (piv txwv li, BYK-161) + polyethylene wax composite. |
| Tus Neeg Sawv Cev Txuas (KH-550) | 1% | Kho ATH thiab txhuas hypophosphite ua ntej; muab ethanol rau hauv qab thiab tom qab ntawd ziab. |
| Tus Neeg Sawv Cev Tiv Thaiv Kev Ntsws | 0.5–1% | PTFE micropowder los tiv thaiv kev kub hnyiab. |
| Kev Pab Ua Haujlwm | 0.5% | Zinc stearate (ua kom lubrication thiab tiv thaiv kev nplaum). |
III. Kev Tswj Xyuas Cov Txheej Txheem Tseem Ceeb
- Kev Txhim Kho Kev Ncua Tawm
- Kev kho ua ntej: Muab ATH thiab txhuas hypophosphite tsau rau hauv 1% KH-550 ethanol kua rau 2 teev, tom qab ntawd qhuav ntawm 80 ° C.
- Kev Sib Tov Sib Xyaws:
- Cov roj hmab hauv paus + cov khoom tawg + cov neeg sawv cev sib txuas → Kev sib tov qeeb qeeb (500 rpm, 5 feeb).
- Ntxiv ATH/aluminium hypophosphite uas tau hloov kho → Kev txiav ceev ceev (2500 rpm, 20 feeb).
- Ntxiv zinc borate/MCA/PTFE → Kev sib tov qeeb qeeb (800 rpm, 10 feeb).
- Khoom siv: Twin-screw extruder (cheeb tsam kub: thaj tsam pub 200 ° C, thaj tsam yaj 230 ° C, pwm 220 ° C).
- Kev Tswj Kub Ua Haujlwm
- Xyuas kom qhov kub yaj tsawg dua 250°C kom tiv thaiv MCA lwj (MCA lwj ntawm 250–300°C).
- Cov pellets txias nrog dej tom qab extrusion kom tiv thaiv kev kub hnyiab.
IV. Kev Sib Txuas Lus Ua Hluav Taws Kub
- ATH + Aluminium Hypophosphite
- ATH nqus cua sov thiab tso cov dej ua pa tawm, ua rau cov pa roj uas yooj yim hlawv tawm.
- Aluminium hypophosphite catalyzes dense char formation (AlPO₄), thaiv kev hloov pauv cua sov.
- Zinc Borate + MCA
- Zinc borate tsim ib daim iav thaiv hla cov kab nrib pleb char.
- MCA lwj mus tso NH₃ tawm, ua rau cov pa oxygen tsis muaj zog thiab tiv thaiv cov tshuaj tiv thaiv dawb.
- PTFE Tiv Thaiv Kev Ntsws
- PTFE micropowder tsim ib lub network fibrous, txo qhov kev pheej hmoo ntawm kev kub hnyiab.
V. Kev Kho Kom Zoo thiab Kev daws teeb meem
| Qhov Teeb Meem Feem Ntau | Kev daws teeb meem |
|---|---|
| Hluav taws kub qis dua V0 (V1 / V2) | Nce cov txhuas hypophosphite mus rau 12% + MCA mus rau 5%, lossis ntxiv 2% encapsulated liab phosphorus (synergistic nrog txhuas hypophosphite). |
| Txo cov khoom siv kho tshuab | Txo ATH mus rau 25%, ntxiv 5% iav fiber (reinforcement) lossis 3% maleic anhydride-grafted POE (toughening). |
| Kev ua haujlwm tsis zoo | Nce cov tshuaj dispersant mus rau 3%, lossis ntxiv 0.5% low-MW polyethylene wax (lubrication). |
| Paj ntoo saum npoo av | Siv cov tshuaj sib txuas kom zoo dua lossis hloov mus siv cov tshuaj sib txuas titanate (NDZ-201) kom sib txuas tau zoo dua. |
VI. Cov Kev Ntsuas Kev Pom Zoo
- Kev Ntsuas UL94 V0:
- Cov qauv 1.6 hli thiab 3.2 hli, tag nrho lub sijhawm hlawv < 50 vib nas this tom qab ob qhov kev hlawv, tsis muaj kev hlawv dej ntws.
- LOI: Lub hom phiaj ≥30% (qhov tseeb ≥28%).
- Cov Khoom Siv Kho Tshuab:
- Lub zog tensile > 40 MPa, lub zog cuam tshuam > 5 kJ/m² (ASTM tus qauv).
- Kev Ruaj Ntseg Kub (TGA):
- Cov seem char ntawm 800°C > 20%, qhov kub pib lwj > 300°C.
VII. Piv txwv ntawm cov qauv siv los ua piv txwv
| Cheebtsam | Cov ntsiab lus (%) |
|---|---|
| SK Polyester ES500 | 48% |
| Ultrafine ATH (hloov kho) | 28% |
| Aluminium Hypophosphite | 11% |
| Zinc Borate | 7% |
| MCA | 4% |
| BYK-161 Cov Tshuaj Tua Kab Mob | 2.5% |
| KH-550 Tus Neeg Sawv Cev Txuas | 1% |
| PTFE Anti-Dripping Agent | 0.8% |
| Zinc Stearate | 0.5% |
Cov qauv no thiab cov txheej txheem tsim tau ua tiav UL94 V0 nplaim taws retardancy rau SK Polyester ES500 thaum sib npaug processability thiab cov khoom siv kho tshuab. Kev sim me me raug pom zoo kom paub tseeb tias dispersion ua ntej kho qhov sib piv zoo (piv txwv li, sib npaug aluminium hypophosphite thiab MCA). Yog xav kom nplaim taws retardancy ntxiv, xav txog kev ntxiv 2% boron nitride nanosheets (BNNS) ua ob-functional thermal conductive/flame retardant filler.
More info., pls contact lucy@taifeng-fr.com
Lub sijhawm tshaj tawm: Lub Xya Hli-01-2025
