Ireferensi yokwenziwa kwe-retardant flame retardant ye-SK Polyester ES500 (UL94 V0 rating).
I. Indlela yoYilo loYilo
- Ukuhambelana kweSubstrate
- I-SK Polyester ES500: Ipolyester ye-thermoplastic enobushushu obuqhelekileyo bokusebenza obuyi-220–260°C. Isithinteli somlilo kufuneka simelane nolu luhlu lobushushu.
- IiMfuno eziPhambili: Ulungelelaniso lwe-flame retardancy (V0), iimpawu zomatshini (ukuqina / amandla empembelelo), kunye nokucubungula umbane.
- I-Synergistic Flame Retardant System
- I-Ultrafine Aluminiyam Hydroxide (ATH): I-Primary flame retardant, i-endothermic dehydration. Ukulayisha kufuneka kulinganise ukubuyiswa komlilo kunye neempawu zomatshini.
- I-Aluminium Hypophosphite: I-synergist eyenza i-Char-forming, isebenza kunye ne-ATH ukudala i-phosphorus-aluminium synergistic effect, ukuphucula umgangatho we-char.
- I-Zinc Borate: Isiphuculi se-Char, sicinezela umsi, kwaye senza umqobo oshinyeneyo nge-ATH.
- I-MCA (i-Melamine Cyanurate): I-gas-phase flame retardant, iyancipha i-oksijini kwaye inqanda ukunyibilika ukuvuza.
II. Ulwakhiwo oluCetyisiweyo (ipesenti yobunzima)
| Icandelo | Umlinganiselo | Amanqaku okuqhubela phambili |
|---|---|---|
| SK Polyester ES500 | 45–50% | Isiseko se-resin; khetha ibakala elinolwelo oluphezulu ukuhlawula i-viscosity yokugcwaliswa. |
| I-ATH egqibeleleyo | 25–30% | Umphezulu-uguqulwe nge-agent yokudibanisa i-silane (KH-550), i-D50 <3 μm. |
| I-Aluminiyam Hypophosphite | 10–12% | I-Heat-resistant (> 300 ° C), ixutywe ngaphambili ne-ATH kwaye yongezwa kwizigaba. |
| Zinc Borate | 6–8% | Yongezwe kunye ne-MCA ukunqanda umonakalo omkhulu wesakhiwo. |
| MCA | 4–5% | Ubushushu benkqubo < 250 ° C, ukusasazwa kwesantya esiphantsi. |
| Ukuchithachitha | 2–3% | I-polyester-ehambelanayo ne-dispersant (umzekelo, i-BYK-161) + i-polyethylene wax composite. |
| Iarhente yokuNxulumanisa (KH-550) | 1% | Ukuphatha kwangaphambili i-ATH kunye ne-aluminium hypophosphite; ukuntywiliselwa kwe-ethanol kulandele ukomiswa. |
| Anti-Ukuvuza Agent | 0.5–1% | PTFE micropowder ukucinezela ukuvutha ukunyibilika. |
| Uncedo loLungiselelo | 0.5% | I-Zinc stearate (i-lubrication kunye ne-anti-sticking). |
III. Ulawulo Lwenkqubo Engundoqo
- Ukusasazwa kokuPhuculwa
- Unyango lwangaphambili: Gxuma i-ATH kunye ne-aluminium hypophosphite kwi-1% KH-550 isisombululo se-ethanol kwiiyure ze-2, uze wome kwi-80 ° C.
- Ukudibanisa Ulandelelwano:
- Isiseko se-resin + i-dispersant + i-arhente yokudibanisa → Ukuxuba okuphantsi kwesantya (500 rpm, 5 min).
- Yongeza i-ATH / i-aluminium hypophosphite elungisiweyo → i-high-speed shear (2500 rpm, 20 min).
- Yongeza i-zinc borate/MCA/PTFE → Isantya esisezantsi sokuxuba (800 rpm, 10 min).
- Izixhobo: I-twin-screw extruder (imimandla yobushushu: indawo yokutya i-200 ° C, indawo yokunyibilika i-230 ° C, fa i-220 ° C).
- Ukulungiswa koLawulo lobushushu
- Qinisekisa ukushisa okunyibilikayo <250 ° C ukuthintela ukubola kwe-MCA (i-MCA ibola kwi-250-300 ° C).
- Iipellets ezipholileyo zamanzi emva kokukhutshwa ukuthintela ukufuduka kwe-flame retardant.
IV. I-Flame Retardant Synergistic Mechanism
- ATH + Aluminiyam Hypophosphite
- I-ATH ifunxa ubushushu kwaye ikhuphe umphunga wamanzi, ihlambulula iigesi ezinokutsha.
- I-Aluminiyam i-hypophosphite ibangela ukubunjwa kwe-char exineneyo (AlPO₄), inqanda ukuhanjiswa kobushushu.
- Zinc Borate + MCA
- I-zinc borate yenza umqobo weglasi phezu kweentanda ze-char.
- I-MCA iyabola ukukhulula i-NH₃, i-oksijini edibeneyo kwaye inqanda ukuphendulwa kwe-radical yamahhala.
- PTFE Anti-Ukuvuza
- I-PTFE i-micropowder yenza inethiwekhi ye-fibrous, inciphisa umngcipheko wokuvutha we-melt-drip.
V. ULungiselelo lweNtsebenzo kunye nokulungisa iingxaki
| Umba oqhelekileyo | Isisombululo |
|---|---|
| Ukuncipha komlilo ngaphantsi kwe-V0 (V1/V2) | Ukwandisa i-aluminium hypophosphite ukuya kwi-12% + MCA ukuya kwi-5%, okanye ungeze i-2% efakwe kwi-phosphorus ebomvu (i-synergistic ne-aluminium hypophosphite). |
| Ukunciphisa iimpawu zoomatshini | Nciphisa i-ATH ukuya kwi-25%, yongeza i-5% ye-glass fiber (ukuqinisa) okanye i-3% ye-maleic anhydride-grafted POE (i-toughening). |
| Ukusebenza kakubi kwamanzi | Yandisa i-dispersant ukuya kwi-3%, okanye udibanise i-0.5% ye-wax ye-polyethylene ephantsi kwe-MW (i-lubrication). |
| Ukuqhakaza komphezulu | Lungiselela idosi yearhente yoqhagamshelo okanye utshintshele kwi-agent edibanisa i-titanate (NDZ-201) ukuze ufumane ikhonkco eliphakathi kobuso. |
VI. Iimetriki zoQinisekiso
- Uvavanyo lwe-UL94 V0:
- I-1.6 mm kunye ne-3.2 mm imizekelo, ixesha lokutshisa lilonke <50 sec emva kokutshiswa kabini, akukho mlilo ovuzayo.
- LOI: Ithagethi ≥30% (eyokwenene ≥28%).
- Iinkcazelo ngoomatshini:
- Amandla okuqina > 40 MPa, amandla empembelelo > 5 kJ/m² (umgangatho weASTM).
- Uzinzo lweThermal (TGA):
- Intsalela yentsimbi kwi-800°C> 20%, iqondo lobushushu lokuqala lokubola> 300°C.
VII. Ukuqulunqwa koMzekelo weReferensi
| Icandelo | Umxholo (%) |
|---|---|
| SK Polyester ES500 | 48% |
| I-Ultrafine ATH (ilungisiwe) | 28% |
| I-Aluminiyam Hypophosphite | 11% |
| Zinc Borate | 7% |
| MCA | 4% |
| BYK-161 Dispersant | 2.5% |
| I-KH-550 yokudibanisa i-Agent | 1% |
| PTFE Anti-Ukuvuza Agent | 0.8% |
| Zinc Stearate | 0.5% |
Olu qulunqo kunye noyilo lwenkqubo lufezekisa ngokufanelekileyo i-UL94 V0 i-flame retardancy ye-SK Polyester ES500 ngelixa i-bancing processability kunye neempawu zoomatshini. Ulingo oluncinci luyacetyiswa ukuqinisekisa ukusasazwa phambi kolungelelwaniso olucokisekileyo (umzekelo, ukulinganisa i-aluminiyam hypophosphite kunye ne-MCA). Ukuqhubela phambili ukuphuculwa kokubuyiswa komlilo, cinga ukongeza i-2% ye-boron nitride nanosheets (BNNS) njenge-dual-functional thermal conductive/flame retardant filler.
More info., pls contact lucy@taifeng-fr.com
Ixesha lokuposa: Jul-01-2025
