Qaab-dhismeedka Dabaysha Ololka ee aan Halogen-ka lahayn ee PBT

Qaab-dhismeedka Dabaysha Ololka ee aan Halogen-ka lahayn ee PBT

Si loo sameeyo nidaam dab-celiye aan halogen lahayn (FR) oo loogu talagalay PBT, waxaa lagama maarmaan ah in la dheellitiro hufnaanta dab-celiyaha, xasilloonida kulaylka, is-waafajinta heerkulka habaynta, iyo sifooyinka farsamada.

I. Isku-darka Dabaysha Dabka ee Aasaasiga ah

1. Aluminium Hypophosphite + MCA (Melamine Cyanurate) + Zinc Borate

Habka:

• Aluminium Hypophosphite (Xasilloonida kulaylka > 300°C): Waxay kor u qaaddaa sameynta daxalka marxaladda la isku daray waxayna sii deysaa xagjirrada PO· marxaladda gaaska si ay u joojiyaan falcelinta silsiladda gubashada.
• MCA (Heerkulka kala-go'idda ~300°C): Kala-go'idda endothermic-ka waxay sii deysaa gaasaska aan firfircoonayn (NH₃, H₂O), iyadoo qasaysa gaasaska ololaya iyo xakamaynta dhibcaha dhalaalaya.
• Zinc Borate (Heerkulka kala-baxa > 300°C): Waxay xoojisaa sameynta dhalaalka galaaska, waxayna yareysaa qiiqa iyo iftiinka dambe.

Saamiga lagu taliyay:
Aluminium Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Magnesium Hydroxide oo dusha sare laga beddelay + Aluminium Hypophosphite + Phosphinate dabiici ah (tusaale ahaan, ADP)

Habka:

• Magnesium Hydroxide oo wax laga beddelay (Heerkulka kala-baxa ~300°C): Daawaynta dusha sare (silane/titanate) waxay hagaajisaa kala-baxa iyo xasilloonida kulaylka iyadoo nuugaysa kulaylka si loo yareeyo heerkulka walxaha.
• Fosfinaat dabiici ah (tusaale ahaan, ADP, Xasiloonida kulaylka > 300°C): Wax-ka-qabasho ololka wejiga gaaska oo aad waxtar u leh, oo la jaanqaadaysa nidaamyada fosfooraska-nitrogen.

Saamiga lagu taliyay:
Magnesium Hydroxide (15-20%) + Aluminium Hypophosphite (8-12%) + ADP (5-8%).

II. Isku-dubaridayaasha Ikhtiyaarka ah

• Nano Clay/Talc (2-3%): Waxay hagaajisaa tayada iyo sifooyinka farsamada iyadoo la dhimayo qiyaasta FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Walax ka hortagta daadashada si looga hortago gubashada dhibcaha.
• Budada Silikoon (2-4%): Waxay kor u qaaddaa sameynta qolof cufan, waxayna xoojisaa dib u dhigista ololka iyo dhalaalka dusha sare.

III. Isku-darka la Iska Ilaalinayo

• Aluminium Hydroxide: Wuxuu ku burburaa heerkul ah 180-200°C (ka hooseeya heerkulka habaynta PBT ee 220-250°C), taasoo horseedaysa burbur degdeg ah.
• Magnesium Hydroxide oo aan wax laga beddelin: Waxay u baahan tahay daaweyn dusha sare ah si looga hortago isku-darka iyo kala-baxa kulaylka inta lagu jiro farsamaynta.

IV. Talooyinka Hagaajinta Waxqabadka

1. Daaweynta Dusha Sare: Isticmaal wakiilada isku xidhka silane ee ku jira magnesium hydroxide iyo zinc borate si kor loogu qaado kala firdhinta iyo isku xidhka wejiga.
2. Xakamaynta Heerkulka Habaynta: Hubi heerkulka kala-baxa FR > 250°C si looga fogaado burburka inta lagu jiro habaynta.
3. Dheelitirka Hantida Farsamada: Ku dar nano-buuxiyeyaal (tusaale ahaan, SiO₂) ama kuwa adag (tusaale ahaan, POE-g-MAH) si loo magdhabo luminta xoogga.

V. Tusaalaha Caadiga ah ee Qaaciddada

VI. Cabbirrada Tijaabada Muhiimka ah

• Dib-u-celinta Ololka: UL94 V-0 (1.6mm), LOI > 35%.
• Xasiloonida Kulaylka: Hadhaaga TGA > 25% (600°C).
• Sifooyinka Farsamada: Xoogga jiidista > 45 MPa, saameyn la jaray > 4 kJ/m².

Iyadoo la hagaajinayo saamiga, nidaam hufan oo dab-damis ah oo aan halogen lahayn ayaa la gaari karaa iyadoo la ilaalinayo waxqabadka guud ee PBT.

More info., pls contact lucy@taifeng-fr.com