Waterborne polyurethane(WPU) binder was synthesized by refined alkali lignin(RAL) with 4,4′-diphenylmethane diisocyanate(MDI).Fourier transform infrared spectroscopy(FTIR) was used to clarify the group change of raw ...Waterborne polyurethane(WPU) binder was synthesized by refined alkali lignin(RAL) with 4,4′-diphenylmethane diisocyanate(MDI).Fourier transform infrared spectroscopy(FTIR) was used to clarify the group change of raw materials-alkali lignin(AL),MDI,and product WPU,and laser particle analyzer was used to analyze the particle size of WPU.The results were as follows: AL could react with MDI to produce WPU binder.The reaction extent,the dispersion,and dispersion stability of WPU were influenced by/ratio.The WPU synthesized by AL,polyethylene glycol(PEG) and MDI was used as a binder in pigment dyeing process.In this process,the influence factors,such as binders made by different ratio of materials,the concentration of binder,curing temperature,and curing time were analyzed respectively.展开更多
基金Program of Introducing Talents of Discipline to Universities,China(No.111-2-04)
文摘Waterborne polyurethane(WPU) binder was synthesized by refined alkali lignin(RAL) with 4,4′-diphenylmethane diisocyanate(MDI).Fourier transform infrared spectroscopy(FTIR) was used to clarify the group change of raw materials-alkali lignin(AL),MDI,and product WPU,and laser particle analyzer was used to analyze the particle size of WPU.The results were as follows: AL could react with MDI to produce WPU binder.The reaction extent,the dispersion,and dispersion stability of WPU were influenced by/ratio.The WPU synthesized by AL,polyethylene glycol(PEG) and MDI was used as a binder in pigment dyeing process.In this process,the influence factors,such as binders made by different ratio of materials,the concentration of binder,curing temperature,and curing time were analyzed respectively.
