Preparation of melamine–formaldehyde resin-microencapsulated ammonium polyphosphate and its application in flame retardant rigid polyurethane foam composites

2020 ◽  
Vol 27 (12) ◽  
Author(s):  
Gang Tang ◽  
Haohao Jiang ◽  
Yadong Yang ◽  
Depeng Chen ◽  
Chunlin Liu ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Polyurethane Foam ◽  
Ammonium Polyphosphate ◽  
Formaldehyde Resin ◽  
Rigid Polyurethane Foam ◽  
Melamine Formaldehyde ◽  
Melamine Formaldehyde Resin ◽  
Microencapsulated Ammonium Polyphosphate

Preparation of Melamine Formaldehyde Resin Modified with Pentaerythritol and its Flame Retardant Effect in Polypropylene

2020 ◽  
Vol 1003 ◽  
pp. 205-212
Author(s):  
Fu Long Zhou ◽  
Hong Zhi Wu ◽  
Ming Mei Sun ◽  
Xin Zhu ◽  
Lin Sheng Tang
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Raw Materials ◽  
Formaldehyde Resin ◽  
Melamine Formaldehyde ◽  
Cone Calorimetry ◽  
Melamine Formaldehyde Resin ◽  
Ft Ir ◽  
C Nmr

A new triazine charring agent, melamine formaldehyde resin modified with pentaerythritol (named as MF-MPOL), was synthesized through hydroxymethylation, condensation and etherification by using melamine, paraformaldehyde and pentaerythritol as raw materials, and characterized by solid-state 13C NMR and FT-IR. The intumescent flame retardant (IFR) consisting of MF-MPOL with ammonium polyphosphate has good flame retardancy in polypropylene (PP). The analysis of the residues obtained in cone calorimetry test showed that the IFR played a role of flame retardancy mainly in condensed phase. In other words, the porous and dense - continuous intumescent char layer formed during the burning process results in flame retardant effect by insulation of heat, oxygen and preventing the underlying PP from degradation and volatilization of pyrolytic products.

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