I-PBT Halogen-Free Flame Retardant Reference Reference Formulation

I-PBT Halogen-Free Flame Retardant Reference Reference Formulation

Ukwandisa ukuqulunqwa kwe-halogen-free flame retardants ye-PBT, kubalulekile ukulungelelanisa ukusebenza kakuhle kwe-flame retardancy, ukuzinza kwe-thermal, ukuhambelana kokushisa, kunye neempawu zomatshini. Apha ngezantsi sisicwangciso sokudibanisa esiphuculweyo esinohlalutyo oluphambili:

1. IiNdibaniselwano eziNxibelelaniso zeFlame

Ukhetho loku-1: iAluminiyam Hypophosphite + MCA (iMelamine Cyanurate) + iZinc Borate

Inkqubo:

• I-Aluminiyamu Hypophosphite (Ukuzinza kwe-Thermal> 300 ° C): Ikhuthaza ukubunjwa kwe-char kwisigaba esincitshisiweyo kwaye ikhuphe i-PO· radicals kwisigaba segesi ukuphazamisa ukuphendula kwekhonkco lokutsha.
• I-MCA (Ukubola kwi- ~ 300 ° C): Ukubola kwe-Endothermic kukhupha iigesi ezingenayo (NH₃, H₂O), ukuxutywa kweegesi ezinokutsha kunye nokucinezela ukunyibilika okuvuzayo.
• I-Zinc Borate (Ukubola > 300°C): Iphucula ukumila kweglasi emhlophe, inciphisa umsi kunye nokuvutha.

Umlinganiselo oCetyisiweyo:

• IAluminiyam Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

Ukhetho lwesi-2: I-Surface-Modified Magnesium Hydroxide + Aluminium Hypophosphite + Organic Phosphinate (umz., ADP)

Inkqubo:

• I-Magnesium Hydroxide elungisiweyo (Ukubola ~ 300 ° C): Unyango lwe-surface (silane / titanate) luphucula ukusasazeka kunye nokuzinza kwe-thermal; Ukupholisa kwe-endothermic kwehlisa ubushushu bezinto eziphathekayo.
• I-Organic Phosphinate (umzekelo, i-ADP, ukuzinza kwe-thermal> 300°C): Isebenza kakhulu kwigas-phase flame retardant, isebenzisana ne-phosphorus-nitrogen systems.

Umlinganiselo oCetyisiweyo:

• I-Magnesium Hydroxide (15-20%) + I-Aluminiyam Hypophosphite (8-12%) + ADP (5-8%).

2. Optional Synergists

• I-Nano-clay / Talc (2-3%): Iphucula umgangatho we-char kunye neempawu zemishini ngelixa unciphisa ukulayishwa kwe-flame retardant.
• I-PTFE (0.2-0.5%): Iarhente yokuchasa ukuvuza ukuthintela ukutshisa amathontsi.
• I-Silicone Powder (2-4%): Ikhuthaza ukubunjwa kwe-char eshinyeneyo, iphucula ukubuyiswa komlilo kunye neglosi yeglosi.

3. Imidibaniso omele uyiphephe

• I-Aluminium Hydroxide: Ibola kwi-180-200 ° C (ngaphantsi kwe-PBT yokucubungula ukushisa kwe-220-250 ° C), ekhokelela ekuthotyweni kwangaphambi kwexesha.
• I-Magnesium Hydroxide engalungiswanga: Ifuna unyango olungaphezulu ukukhusela i-agglomeration kunye nokubola kwe-thermal ngexesha lokucubungula.

4. Iingcebiso zokuSebenza ngokuSebenza

• Unyango olungaphezulu: Sebenzisa i-silane coupling agents kwi-Mg(OH)₂ kunye ne-zinc borate ukuqinisa ukusasazwa kunye nokuhlangana kobuso.
• Ukusetyenzwa koLawulo loBubushushu: Qinisekisa ukuba iqondo lobushushu lokubola elibuyiswa lidangatye> 250°C ukunqanda ukuthotywa.
• IMechanical Property Ibhalansi: Buyekeza ilahleko yamandla usebenzisa i-nano-fillers (umz., SiO₂) okanye i-tougheners (umz., POE-g-MAH).

5. Umzekelo wokuqulunqa

6. Iimetriki zoVavanyo oluPhambili

• Ukubuyiswa komlilo: UL94 V-0 (1.6mm), LOI> 35%.
• Ukuzinza kweThermal: intsalela ye-TGA> 25% (600 ° C).
• IiPropati zoomatshini: Amandla okuqina > 45 MPa, impembelelo enophawu > 4 kJ/m².

Ngokulungisa ngokucokisekileyo ulungelelwaniso, ukusebenza kakuhle okuphezulu kwe-halogen-free flame retardancy kunokufezekiswa ngelixa kugcinwa ukusebenza ngokubanzi kwe-PBT.

More info., pls send email to lucy@taifeng-fr.com