Foomka Tixraaca Retardant ee Halogen-Free Flame
Si loo wanaajiyo samaynta dab-celiyayaasha holac-la'aanta ah ee PBT, waxaa lagama maarmaan ah in la isku dheellitiro waxtarka dib u dhaca ololka, xasilloonida kulaylka, iswaafajinta heerkulka, iyo sifooyinka farsamada. Hoos waxaa ah istaraatiijiyad isku-darka la hagaajiyay oo leh falanqayn muhiim ah:
1. Isku darka Ololka Muhiimka ah
Doorashada 1: Aluminium Hypophosphite + MCA (Melamine Cyanurate) + Zinc Borate
Farsamaynta:
- Aluminium Hypophosphite (Xasilloonida kulaylka> 300 ° C): Waxay kor u qaaddaa samaynta dhuxusha ee wejiga cufan waxayna sii deysaa PO · radicals ee wejiga gaaska si ay u joojiso falcelinta silsiladda gubashada.
- MCA (Kalallama heerka ~ 300°C): Qulqulka Endothermic wuxuu sii daayaa gaasas aan shaqaynayn (NH₃, H₂O), milmaya gaasaska gubanaya iyo xakamaynta qulqulka dhalaalka.
- Zinc Borate (Balli> 300°C): Waxay xoojisaa samaynta dhuxusha dhalooyinka, yaraynta qiiqa iyo dhalaalka ka dib.
Saamiga lagu taliyay:
- Aluminium Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).
Ikhtiyaarka 2: Dusha sare ee Magnesium Hydroxide + Aluminium Hypophosphite + Fosfinate Dabiici ah (tusaale, ADP)
Farsamaynta:
- Magnesium Hydroxide la beddelay (Decomposition ~ 300 ° C): Daaweynta dusha sare (silane/titanate) waxay hagaajisaa kala firdhisanaanta iyo xasilloonida kulaylka; Qaboojinta endothermic waxay hoos u dhigtaa heerkulka walxaha.
- Fosfinate-dabiiciga ah (tusaale, ADP, xasiloonida kulaylka> 300°C): Dib-u-dhigis gaas-waji-gaas ah oo aad waxtar u leh, oo la shaqeeya nidaamyada fosfooraska-nitrojiinka.
Saamiga lagu taliyay:
- Magnesium Hydroxide (15-20%) + Aluminium Hypophosphite (8-12%) + ADP (5-8%).
2. Isku-dhafka ikhtiyaariga ah
- Nano-dhoobo/Talc (2-3%): Waxay wanaajisaa tayada dhuxusha iyo sifooyinka farsamada iyadoo yaraynaysa rarista ololka.
- PTFE (0.2-0.5%): Wakiilka ka-hortagga dareeraha si looga hortago dhibco gubanaya.
- Budada Silikoon (2-4%): Waxay kor u qaadaa samaynta dhuxusha cufan, kor u qaadaysa dib u dhaca ololka iyo dhalaalka dushiisa.
3. Isku-dhafka si looga fogaado
- Aluminium Hydroxide: Waxay ku duntaa 180-200 ° C (oo ka hooseeya heerkulka wax-qabadka PBT ee 220-250 ° C), taasoo keenta hoos u dhac degdeg ah.
- Magnesium Hydroxide oo aan la beddelin: Waxay u baahan tahay daawaynta dusha sare si looga hortago qallafsanaanta iyo kulaylka inta lagu jiro habaynta.
4. Tilmaamaha Hagaajinta Waxqabadka
- Daaweynta Dusha sare: Isticmaal wakiilada isku xidhka silane ee Mg(OH)₂ iyo zinc borate si aad u xoojiso kala firdhisanaanta iyo isku xidhka wajiga dhexdooda.
- Hagaajinta Xakamaynta Heerkulka: Hubi heerkulka burburka ololka> 250°C si aad isaga ilaaliso xaalufka.
- Dheelitirka Hantida Makaanikada: Magdhawga luminta xoogga adiga oo isticmaalaya nano-fillers (tusaale, SiO₂) ama kuwa adag (tusaale, POE-g-MAH).
5. Samaynta Tusaale
| Ololka Retardant | Soodejinaya (wt%) | Shaqada |
|---|---|---|
| Aluminium Hypophosphite | 12% | Dib u dhiga ololka ugu weyn (condensed + wejiga gaaska) |
| MCA | 6% | Dab-demiska holaca wajiga-gaaska, xakamaynta qiiqa |
| Zinc Borate | 4% | Samaynta taranka isku-dhafka ah, dhimista qiiqa |
| Nano Talc | 3% | Xoojinta Char, kobcinta farsamada |
| PTFE | 0.3% | Ka-hortagga dhibicda |
6. Halbeegyada Imtixaanka Furaha
- Dib u Dhigista Ololka: UL94 V-0 (1.6mm), LOI> 35%.
- Dejinta kulaylka: Hadhaaga TGA> 25% (600°C).
- Guryaha Makaanikada: Xoogga xajinta> 45 MPa, saameyn muuqata> 4 kJ/m².
Marka la hagaajiyo saamiga, waxtarka sare leh ee halogen-free ololka ayaa lagu gaari karaa iyadoo la ilaalinayo waxqabadka guud ee PBT.
More info., pls send email to lucy@taifeng-fr.com
Waqtiga boostada: Jul-08-2025
