Influence of Organoclay on the Flame Retardancy and Thermal Insulation Property of Expandable Graphite/Polyurethane Foam

• Published in: Journal of chemistry Vol. 2019; no. 2019; pp. 1 - 8
• Main Authors: Nguyen, Ha Tran, Trinh, Tung Ngo, Hoang, Mai Ha, Phan, Dinh Long, Tuyen, Nguyen Duc, Nguyen, Thanh Nhan, Duong, Thi Hai Yen, Oanh, Ho Thi, Hanh, Nguyen Thi, Pham, Duy Linh, Thi, Nhung Hac, Trinh, Ha Thu
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 01-01-2019; Hindawi; John Wiley & Sons, Inc; Hindawi Limited
• Subjects: Compressive strength; Flame retardants; Graphite; Heat conductivity; Insulation; Mechanical properties; Morphology; Nanocomposites; Plastic foam; Polymer matrix composites; Polymers; Polyurethane foam; Science; Thermal conductivity; Thermal insulation; Japan
• ISSN: 2090-9063; 2090-9071
• DOI: 10.1155/2019/4794106

The rigid polyurethane foams (RPUFs) filled with organoclay cloisite 20A and expandable graphite (EG) were prepared by the one-step expanding foam method. Flame behavior, mechanical properties, and thermal conductivity of the composites were investigated. The vertical burning test (UL-94V) and limiting oxygen index (LOI) showed that the flame retardancy was increased proportionally with the content of EG in PU composite. However, the presence of EG filler impaired the thermal insulation and the compressive strength of the composite. In this report, we proved that organoclay could improve the compressive strength, thermal insulation, and flame retardancy of EG/polyurethane composites. This work can contribute to the development of environment-friendly flame-retardant products for green growth.