Synthesis and Application of Bio-based Color Paste for Flexible Polyurethane Foam
A type of bio-based color pastes for flexible polyurethane foam was prepared with bio-based vegetable oil polyol(soybean oil,palm oil and castor oil)and polyether carbonate diol,adding bio-based dispersant and pigment powder.Compared with the traditional polyether polyol color paste,the bio-based color paste had low viscosity,good fineness,strong coloring power,good storage stability,good compatibility with polyurethane composite material,little influence on polyurethane foaming properties and low TVOC.All properties of the bio-based color pastes were better than the traditional color paste propertes.The current coloring problem of flexible polyurethane foam could be solved,and was in line with the national green environmental protection and low-carbon cycle of sustainable development concept.