Preparation and characterization of rigid polyurethane-polyglycerol nanocomposite foams

作者：Piszczyk Lukasz; Strankowski Michal^*; Danowska Magdalena; Haponiuk Jozef T; Gazda Maria

来源：European Polymer Journal, 2012, 48(10): 1726-1733.

DOI：10.1016/j.eurpolymj.2012.07.001

• Polyurethane foams
• Polyglycerol
• Nanocomposite
• Nanofiller
• Montmorillonite
• MMT

This work reports on the preparation of polyurethane-polyisocyanurate (PUR-PIR) foams containing different polyglycerols and layered silicate nanoclays. The rigid polyurethane foams were obtained in a laboratory scale, in a single step method, from a two-component system with a NCO to OH groups ratio equal to two. The reaction mixture consisted of the proper amounts of a commercial oligoetherpolyol, polyglycerol, catalysts, water, nanofiller, and polymeric diphenylmethane diisocyanate. The obtained foams containing 6% of one of three types of montmorillonite (MMT) (Cloisite 30B, Laponite RD, Bentonite) were characterized in terms of their structure, density, brittleness, compressive strength and thermal stability. The nanocomposite foams showed a higher number of cells with a smaller cell size in the presence of MMT, while the foams modified with nanofiller Cloisite 30B presented the best compressive strength and the best fire resistance.

• 出版日期2012-10