Ammonium Polyphosphate (APP)tsis yog ib yam khoom xwb, tab sis yog ib tsev neeg loj, nrog rau qhov sib txawv ntawm kev ua tau zoo feem ntau txiav txim siab los ntawm ob qhov ntev: qib ntawm polymerization (n-value) thiab cov qauv siv lead ua.
Faib tawm los ntawm qib polymerization:
- APP qis-polymer (n = 10 ~ 20): Solubility dej siab, tsis thermal stability, feem ntau yog siv rau hauv cov neeg tua hluav taws, cov ntawv hluav taws retardants, lossis ua cov chiv qeeb qeeb.
- Cov polymer APP siab (n> 20): Solubility dej tsawg, thermal stability zoo, lub hauv paus ntawm cov nplaim taws retardants hauv plastics, coatings, thiab lwm yam.
- Qib siab heev ntawm polymerization APP (n> 1000): Yuav luag tsis yaj hauv dej, qhov kub thiab txias ntawm kev lwj tuaj yeem ncav cuag siab dua 350 ℃, tshwj xeeb siv rau hauv cov yas engineering siab thiab cov ntawv thov kub.
Raws lidaim ntawv siv lead ua:
- Hom I APP: Feem ntau amorphous, hygroscopic heev, thiab yooj yim agglomerate, tsim rau cov ntawv thov qis kawg uas qhov yuav tsum tau tiv thaiv dej tsis siab.
- Hom II APP: Crystalline, nrog kev tiv taus hydrolysis zoo heev thiab thermal stability, nws yog qhov kev xaiv tam sim no hauv kev lag luam thiab siv dav hauv cov ntaub ntawv ua haujlwm siab-retardant.
Lub kaw lus faib tawm zoo no tso cai rau APP kom phim cov kev xav tau ntawm ntau yam kev siv sib txawv.
APP sawv tawm hauv kev lag luam hluav taws kub vim nws qhov kev ua tau zoo thiab sib npaug. Nws lub hauv paus tseem ceebcov txiaj ntsigmuaj peev xwm sau ua plaub lub ntsiab lus:
Ua ntej, kev phooj ywg zoo rau ib puag ncig. APP tsis muaj halogen thiab tsis tso cov pa roj hydrogen halide lom thaum hlawv, ua raws li cov qauv ib puag ncig thoob ntiaj teb xws li RoHS thiabCUAG , ua rau nws yog ib qho kev xaiv zoo tagnrho rau cov tshuaj brominated flame retardants ib txwm muaj.
Qhov thib ob, kev ua haujlwm siab ntawm cov nplaim taws. Ntxiv 5% -25% rau cov yas tuaj yeem ua tiav qhov siab tshaj plawsUL-94 V-0qhov ntsuas tiv taus hluav taws, txhais tau tias cov khoom siv tua tam sim ntawd thaum tshem tawm cov nplaim taws thiab tsis muaj dej ntws.
Qhov thib peb, muaj zog hloov pauv tau. Hom II APP muaj qhov kub thiab txias pib lwj ≥260 ℃, siab tshaj qhov kub ua tiav ntawm cov yas engineering xws li PP thiab PA, ua kom muaj kev ruaj khov thiab tsis lwj thaum txhaj tshuaj molding thiab extrusion.
Qhov thib plaub, kev tswj pa luam yeeb zoo heev. Nws tsim pa luam yeeb me me thaum lub sijhawm hlawv, tiv thaiv kev puas tsuaj thib ob, uas yog qhov tseem ceeb tshwj xeeb hauv cov chaw kaw xws li cov av hauv av thiab cov qhov av.
Piv rau cov tshuaj tua hluav taws ib txwm muaj, APP qhov zoo yog qhov pom tseeb. Piv rau cov tshuaj tua hluav taws halogenated, nws yog tus phooj ywg zoo rau ib puag ncig; piv rau txhuas hydroxide (ATH), nws muaj cov nplaim taws zoo dua ntawm tib qhov ntxiv, thiab qhov kub ntawm ATH tsuas yog li 180 ℃, uas txwv nws daim ntawv thov hauv cov khoom siv ua tiav kub.
Contact us(sales2@taifeng-fr.com) for more halogen free flame retardants solution.
Lub sijhawm tshaj tawm: Lub Yim Hli-26-2026
