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Phosphorus-Containing Phthalonitrile Resin for VIMP and RTM Processing

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Phosphorus-Containing Phthalonitrile Resin for VIMP and RTM Processing

 

New phthalonitrile resin formulation based on the low-melting phosphorus-containing monomer bis(3-(3,4-dicyanophenoxy)phenyl) phenyl phosphate recently reported by our research group, common phthalonitrile 1,3-bis (3,4-dicyanophenoxy)benzene and aromatic diamine as curing agent was developed. The resin processing properties (melt viscosity 150 mPa∙s at 150°C) allowed to produce carbon fiber composites by vacuum infusion molding process and resin transfer molding at 150 °C. The curing cycle consisting of 3 hours at 180 °C and post-curing at 375 °C was required to achieve the best thermal properties. After post-curing the obtained composites demonstrated up to 90 % mechanical properties retention at 400 °C (τr.t.12 = 60–80 MPa). Flame retardant properties were investigated and the composites demonstrated extremely high LOI > 80 %. Thus easily processable phthalonitriles with quick curing and excellent heat resistant and flame retardant properties were developed.

 

Author: Alexander Babkin

 

Conference: SAMPE Seattle 2017

 

SKU/Code: SE17--0597

Pages: 12



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