Tris (1-chloro-2-propyl) phosphate (TCPP) microcapsules for the preparation of flame-retardant rigid polyurethane foam

ABSTRACT

Toxic liquid tris (1-chloro-2-propyl) phosphate) (TCPP) was microencapsulated with the melamine-formaldehyde resin in water and added as the fire-retardant into the polyurethane foam to slow down its diffusion out. The effect of sodium dodecyl benzenesulfonate and polyvinyl alcohol contents on the particle size was studied and the average size of about 50–250 μm was produced. Increasing the stirring rate and PVA content decreased the diameter of the microcapsule. The cell size of polyurethane foams containing TCPP microcapsules was in the range of 100–600 μm. The polyurethane foam containing 9 wt% of the TCPP microcapsules was HB grade flame-rated.

KEYWORDS:

• Microencapsulation
• melamine-formaldehyde resin
• polyurethane foam
• fire-retardant
• tris (1-chloro-2-propyl) phosphate

Acknowledgments

This work was financial supported by Istanbul Technical University Research Foundation (İTÜ-BAP Project No: TDK-2018-41465).

Disclosure statement

The authors declare no conflict of interest.

Additional information

Notes on contributors

Görkem Ülkü

Görkem Ülkü is currently a Ph.D. student in Istanbul Technical University, Turkey. His research interests are polymer composites, flame retardants, polyurethane, microencapsulation, and organic chemistry.

Nesrin Köken

Dilşah Yaman is a Chemical Engineer.  She has an MSc degree in Polymer Science and Technology, Istanbul Technical University.

Nesrin Köken is currently a Lecturer and Researcher in the Organic Chemistry group in the Chemistry Department, and Polymer Science and Technology Program at Istanbul Technical University. She specializes in water-based polymerization, conducting polymer. Nesrin Köken is the corresponding author.

Ahmet Akar

Ahmet Akar is an emeritus professor. He is interested in Organic Chemistry, Nano Science &Nano Technology, and Polymer Science and Technology. He specializes in water-based polymerization, condensation polymers, polyurethane, conducting polymers, and fire-retardant additives.

Nilgün Kızılcan

Nilgün Kızılcanis currently a Lecturer and Researcher in the Organic Chemistry group in the Chemistry Department, Nano Science & Nano Technology Program, and Polymer Science and Technology Program at Istanbul Technical University. She specializes in resins, conducting polymer and fire retardants.