Toluene Diisocyanate (TDI),the important industrial manufacture material, is widely used in the production of polyurethane, paints, insulation material and electronic components. In recent years, with the deveoplement...Toluene Diisocyanate (TDI),the important industrial manufacture material, is widely used in the production of polyurethane, paints, insulation material and electronic components. In recent years, with the deveoplement of TDI appliation fields, the question caused by TDI has also arised. Summarizes the rearch of toxicology of toluene diisocyanate in domestic and abord.展开更多
Polyether polyurethane was synthesized from modified wheat straw oxygen-alkaline lignin, polyethylene glycol and two different diisocyanates (diphenylemethane-4, 4’-diisocyanate, tolulene diisocyanate) by solution ca...Polyether polyurethane was synthesized from modified wheat straw oxygen-alkaline lignin, polyethylene glycol and two different diisocyanates (diphenylemethane-4, 4’-diisocyanate, tolulene diisocyanate) by solution casting method, its properties were investigated. The results show that modified wheat straw oxygen-alkaline lignin can substitute part of polyethylene glycol to react with diisocyanate to synthesize polyurethane. The molar ratio of NCO to OH and modified wheat straw oxygen-alkaline lignin content affect the properties of lignin-based polyether polyurethane respectively. The addition of plasticizer in the polyurethane synthesis process improves the properties of synthesized polyurethane, especially the elasticity of polyurethane. The synthesized polyurethane from modified wheat straw oxygen-alkali lignin can be used as both engineering plastic and hard foam plastic in future.展开更多
文摘Toluene Diisocyanate (TDI),the important industrial manufacture material, is widely used in the production of polyurethane, paints, insulation material and electronic components. In recent years, with the deveoplement of TDI appliation fields, the question caused by TDI has also arised. Summarizes the rearch of toxicology of toluene diisocyanate in domestic and abord.
文摘Polyether polyurethane was synthesized from modified wheat straw oxygen-alkaline lignin, polyethylene glycol and two different diisocyanates (diphenylemethane-4, 4’-diisocyanate, tolulene diisocyanate) by solution casting method, its properties were investigated. The results show that modified wheat straw oxygen-alkaline lignin can substitute part of polyethylene glycol to react with diisocyanate to synthesize polyurethane. The molar ratio of NCO to OH and modified wheat straw oxygen-alkaline lignin content affect the properties of lignin-based polyether polyurethane respectively. The addition of plasticizer in the polyurethane synthesis process improves the properties of synthesized polyurethane, especially the elasticity of polyurethane. The synthesized polyurethane from modified wheat straw oxygen-alkali lignin can be used as both engineering plastic and hard foam plastic in future.
