Ilana idapada ina itọkasi fun SK Polyester ES500 (iwọn UL94 V0).
I. Ilana Apẹrẹ Ilana
- Ibamu sobusitireti
- SK Polyester ES500: Polyester thermoplastic kan pẹlu iwọn otutu sisẹ aṣoju ti 220-260°C. Idaduro ina gbọdọ duro ni iwọn otutu yii.
- Awọn ibeere Bọtini: Iwontunwonsi idaduro ina (V0), awọn ohun-ini ẹrọ (agbara fifẹ / ipa ipa), ati ṣiṣan sisẹ.
- Synergistic ina Retardant System
- Ultrafine Aluminiomu Hydroxide (ATH): Idaduro ina akọkọ, gbígbẹ endothermic. Ikojọpọ gbọdọ dọgbadọgba idaduro ina ati awọn ohun-ini ẹrọ.
- Aluminiomu Hypophosphite: Char-forming synergist, ṣiṣẹ pẹlu ATH lati ṣẹda kan irawọ owurọ-aluminiomu ipa synergistic, imudarasi didara didara.
- Zinc Borate: Imudara Char, nmu ẹfin mu, o si ṣe idena ipon pẹlu ATH.
- MCA (Melamine Cyanurate): Gas-alakoso ina retardant, dilutes atẹgun ati idilọwọ awọn yo sisu.
II. Ilana ti a ṣeduro (Iwọn Ogorun)
| Ẹya ara ẹrọ | Ipin | Awọn akọsilẹ ilana |
|---|---|---|
| SK Polyester ES500 | 45–50% | Resini ipilẹ; yan ipele omi-giga lati sanpada fun iki kikun. |
| Ultrafine ATH | 25–30% | Atunṣe-oju-oju pẹlu aṣoju asopọ silane (KH-550), D50 <3 μm. |
| Aluminiomu Hypophosphite | 10–12% | Ooru-sooro (> 300 ° C), iṣaju-adalu pẹlu ATH ati fi kun ni awọn ipele. |
| Sinkii Borate | 6–8% | Ṣafikun pẹlu MCA lati yago fun ibajẹ igbekalẹ irẹrun. |
| MCA | 4–5% | Iwọn ilana ilana <250°C, pipinka-kekere. |
| Olupinpin | 2–3% | Pipin-ibaramu Polyester (fun apẹẹrẹ, BYK-161) + apopọ epo-eti polyethylene. |
| Aṣoju Iṣọkan (KH-550) | 1% | Awọn itọju iṣaaju ATH ati aluminiomu hypophosphite; immersion ethanol atẹle nipa gbigbe. |
| Anti-Dripping Aṣoju | 0.5–1% | PTFE micropowder lati dinku ina yo. |
| Iranlọwọ Iranlọwọ | 0.5% | Zinc stearate (lubrication ati anti-sticing). |
III. Awọn iṣakoso ilana bọtini
- Ti o dara ju pipinka
- Itọju iṣaaju: Rẹ ATH ati aluminiomu hypophosphite ni 1% KH-550 ethanol ojutu fun wakati 2, lẹhinna gbẹ ni 80 ° C.
- Ilana Idapọ:
- Ipilẹ resini + dispersant + oluranlowo idapọ → Dapọ iyara-kekere (500 rpm, 5 min).
- Fi ATH/aluminiomu hypophosphite ti a ti yipada → Irẹrun iyara to gaju (2500 rpm, 20 min).
- Ṣafikun borate zinc / MCA/PTFE → Dapọ iyara-kekere (800 rpm, 10 min).
- Ohun elo: Twin-screw extruder (awọn agbegbe iwọn otutu: agbegbe kikọ sii 200 ° C, agbegbe yo 230 ° C, ku 220 ° C).
- Ṣiṣe iṣakoso iwọn otutu
- Rii daju iwọn otutu yo <250°C lati dena jijẹjijẹ MCA (MCA decomposes ni 250–300°C).
- Awọn pellets tutu-omi lẹhin extrusion lati ṣe idiwọ ijira idaduro ina.
IV. Ina Retardant Synergistic Mechanism
- ATH + Aluminiomu Hypophosphite
- ATH fa ooru mu ati tu silẹ oru omi, ti n diluting awọn gaasi flammable.
- Aluminiomu hypophosphite catalizes ipon eedu Ibiyi (AlPO₄), dina ooru gbigbe.
- Sinkii Borate + MCA
- Zinc borate ṣe idena gilasi lori awọn dojuijako eedu.
- MCA decomposes lati tu NH₃ silẹ, diluting atẹgun ati idilọwọ awọn aati radical ọfẹ.
- PTFE Anti-dripping
- PTFE micropowder ṣe nẹtiwọọki fibrous, idinku eewu iginisonu yo-drip.
V. Ṣiṣe atunṣe & Laasigbotitusita
| Ọrọ ti o wọpọ | Ojutu |
|---|---|
| Idaduro ina ni isalẹ V0 (V1/V2) | Mu hypophosphite aluminiomu pọ si 12% + MCA si 5%, tabi ṣafikun 2% irawọ owurọ pupa ti a fipa si (synergistic with aluminum hypophosphite). |
| Dinku darí-ini | Din ATH to 25%, fi 5% gilasi okun (imuduro) tabi 3% maleic anhydride-tirun POE (toughening). |
| Lilọ processing ti ko dara | Pọ dispersant si 3%, tabi fi 0.5% kekere-MW polyethylene epo (lubrication). |
| Dada Bloom | Ṣe ilọsiwaju iwọn lilo aṣoju asopọ pọ tabi yipada si oluranlowo idapọmọra titanate (NDZ-201) fun isunmọ interfacial to dara julọ. |
VI. Awọn Metiriki afọwọsi
- Idanwo UL94 V0:
- 1.6 mm ati awọn apẹẹrẹ 3.2 mm, akoko sisun lapapọ <50 iṣẹju-aaya lẹhin awọn ina meji, ko si iginisonu ṣiṣan.
- LOI: Àfojúsùn ≥30% (gidi ≥28%).
- Awọn ohun-ini ẹrọ:
- Agbara fifẹ> 40 MPa, agbara ipa> 5 kJ/m² (boṣewa ASTM).
- Iduroṣinṣin Ooru (TGA):
- Iyoku Char ni 800°C> 20%, otutu jijẹ ibẹrẹ> 300°C.
VII. Apeere Reference Formulation
| Ẹya ara ẹrọ | Akoonu (%) |
|---|---|
| SK Polyester ES500 | 48% |
| Ultrafine ATH (atunṣe) | 28% |
| Aluminiomu Hypophosphite | 11% |
| Sinkii Borate | 7% |
| MCA | 4% |
| BYK-161 Dispersant | 2.5% |
| KH-550 Aṣoju Asopọmọra | 1% |
| PTFE Anti-dripping Aṣoju | 0.8% |
| Zinc Stearate | 0.5% |
Ilana yii ati apẹrẹ ilana ni aṣeyọri aṣeyọri UL94 V0 idaduro ina fun SK Polyester ES500 lakoko iwọntunwọnsi ilana ati awọn ohun-ini ẹrọ. Awọn idanwo iwọn-kekere ni a gbaniyanju lati mọ daju pipinka ṣaaju awọn ipin-tuntun-daraya (fun apẹẹrẹ, iwọntunwọnsi hypophosphite aluminiomu ati MCA). Fun imudara imuduro ina siwaju, ro fifi 2% boron nitride nanosheets (BNNS) kun bi olutọpa igbona ti o ṣiṣẹ meji-meji/filler retardant.
More info., pls contact lucy@taifeng-fr.com
Akoko ifiweranṣẹ: Jul-01-2025
