PBT Halogen-Free Flame Retardant Formation

PBT Halogen-Free Flame Retardant Formation

Ho hlahisa tsamaiso ea halogen-free flame retardant (FR) bakeng sa PBT, ho bohlokoa ho leka-lekanya ho sebetsa hantle ha lelakabe, botsitso ba mocheso, ho lumellana ha mocheso, le thepa ea mochine.

I. Core Flame Retardant Combinations

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

Mokhoa:

• Aluminium Hypophosphite (Thermal stability> 300°C): E khothalletsa ho etsoa ha char mokhahlelong oa condensed le ho lokolla PO· radicals mokhahlelong oa khase ho sitisa tšebetso ea ketane ea ho tuka.
• MCA (Decomposition temp. ~300°C): Endothermic decomposition e ntša likhase tse inelang (NH₃, H₂O), ho hlapolla likhase tse tukang le ho hatella ho rotha ho qhibiliha.
• Zinc Borate (Mocheso oa ho bola. > 300°C): E matlafatsa sebopeho sa 'mala o kang oa khalase, e fokotsa mosi le khanya e ka morao.

Karolelano e khothalelitsoeng:
Aluminium Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Surface-Modified Magnesium Hydroxide + Aluminium Hypophosphite + Organic Phosphinate (mohlala, ADP)

Mokhoa:

• Magnesium Hydroxide e fetotsoeng (Mocheso oa ho senyeha. ~ 300 ° C): Phekolo ea holim'a metsi (silane / titanate) e ntlafatsa ho hasana le botsitso ba mocheso ha e ntse e monya mocheso ho theola mocheso oa thepa.
• Organic Phosphinate (mohlala, ADP, Thermal stability> 300°C): E thibelang lelakabe la khase e sebetsang hantle haholo, e sebelisanang le mekhoa ea phosphorus-nitrogen.

Karolelano e khothalelitsoeng:
Magnesium Hydroxide (15-20%) + Aluminium Hypophosphite (8-12%) + ADP (5-8%).

II. Boikhethelo ba Synergists

• Nano Clay / Talc (2-3%): E ntlafatsa boleng ba char le thepa ea mochine ha e ntse e fokotsa tekanyo ea FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Ntho e thibelang ho rotha ho thibela marotholi a tukang.
• Silicone Powder (2-4%): E khothalletsa sebopeho sa char e teteaneng, e ntlafatsa ho lieha ha lelakabe le ho benya ha bokaholimo.

III. Metsoako e Lokelang ho Qoba

• Aluminium Hydroxide: E senyeha ho 180-200 ° C (ka tlaase ho nako ea ho sebetsa ea PBT. ea 220-250 ° C), e lebisang ho senyeha pele ho nako.
• Magnesium Hydroxide e sa fetotsoeng: E ​​hloka kalafo ea bokaholimo ho thibela ho putlama le ho bola ha mocheso nakong ea ts'ebetso.

IV. Litlhahiso tsa Ntlafatso ea Ts'ebetso

1. Kalafo ea Bokaholimo: Sebelisa li-silane coupling agents ho magnesium hydroxide le zinc borate ho matlafatsa ho hasana le maqhama a sefahleho.
2. Ts'ebetso ea Taolo ea Mocheso: Etsa bonnete ba hore mocheso oa ho bola oa FR> 250 ° C ho qoba ho senyeha nakong ea ts'ebetso.
3. Mechanical Property Balance: Kenyelletsa li-nano-fillers (mohlala, SiO₂) kapa li-tougheners (mohlala, POE-g-MAH) ho lefella tahlehelo ea matla.

V. Mohlala o Tloaelehileng oa Tlhahiso

VI. Mekhahlelo ea Bohlokoa ea Teko

• Ho Fokotsa Lelakabe: UL94 V-0 (1.6mm), LOI> 35%.
• Thermal Stability: TGA masala> 25% (600 ° C).
• Thepa ea Mechini: Matla a tiileng> 45 MPa, tšusumetso e sa bonahaleng> 4 kJ/m².

Ka ho ntlafatsa li-ratios, mokhoa o sebetsang hantle oa ho thibela lelakabe o se nang halogen o ka finyelloa ha o ntse o boloka ts'ebetso ea PBT ka kakaretso.

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