Halogen-free flame-retardant system in which dialkyl mono-thiophosphate and nitrogenous compound are synergetic and application thereof

• Main Authors: WEN YUNHAO, LEI HUA
• Format: Patent
• Language: Chinese; English
• Published: 13.11.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention discloses a halogen-free flame-retardant system in which dialkyl mono-thiophosphate and nitrogenous compound are synergetic. The halogen-free flame-retardant system comprises 50%-90% ofdialkyl mono-thiophosphate, 9%-40% of nitrogenous compound and 1%-10% of zinc-containing compound. The structural formula of the dialkyl mono-thiophosphate is shown as the formula (I) or (II), in theformula, R1 and R2 are independently selected from linear alkyl or branched alkyl, and the carbon number is 1-6; M is selected from Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K, Hor NH4, and m is 1-4. The halogen-free flame-retardant system has the advantages that the system is high in flame retardance and free of migration, does not corrode equipment and the like and is welladapted to a glass fiber reinforced thermoplastic engineering plastic system, and halogen-free flame-retardant glass fiber reinforced thermoplastic engineering plastic with excellent comprehensive performance is obtained. 本发明公开