引用本文:
Chen Yan BAI, Xing Yuan ZHANG, Jia Bing DAI, Wei Hu LI. Synthesis of a Novel UV Curable Aqueous Dispersion Polyurethane PDHA-PEDA-PU and the Properties of Cured Film[J]. Chinese Chemical Letters,
2006, 17(3): 369-372.
Citation: Chen Yan BAI, Xing Yuan ZHANG, Jia Bing DAI, Wei Hu LI. Synthesis of a Novel UV Curable Aqueous Dispersion Polyurethane PDHA-PEDA-PU and the Properties of Cured Film[J]. Chinese Chemical Letters, 2006, 17(3): 369-372.
Citation: Chen Yan BAI, Xing Yuan ZHANG, Jia Bing DAI, Wei Hu LI. Synthesis of a Novel UV Curable Aqueous Dispersion Polyurethane PDHA-PEDA-PU and the Properties of Cured Film[J]. Chinese Chemical Letters, 2006, 17(3): 369-372.
Synthesis of a Novel UV Curable Aqueous Dispersion Polyurethane PDHA-PEDA-PU and the Properties of Cured Film
摘要:
A novel ultraviolet (UV) curable aqueous dispersion polyurethane PDHA-PEDA-PU was synthesized based on isophorone diisocyanate (IPDI), polyester dihydric alcohol (PDHA), dimethylol propionic acid (DMPA), pentaerythritol diacrylate (PEDA), 2-hydroxyethyl acrylate (HEA) and triethylamine (TEA). Acrylate groups were incorporated in the side and end of PDHA-PEDA-PU chain. The C=C content in the chain can be controlled easily through the change of IPDI/PDHA/PEDA ratio. Fourier transform infrared spectroscopy (FTIR) was used to identify the structure of prepolymer, aqueous dispersion and cured polyurethane. The curing rule of the polyurethane for different C=C content has been investigated depending on the change of C=C content during the curing process. The hardness, thermal stability and scrub resistance to MEK of UV cured PDHA-PEDA-PU were also discussed for the samples with different C=C content.
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关键词:
- UV curable
- / aqueous dispersion
- / polyurethane
English
Synthesis of a Novel UV Curable Aqueous Dispersion Polyurethane PDHA-PEDA-PU and the Properties of Cured Film
Abstract:
A novel ultraviolet (UV) curable aqueous dispersion polyurethane PDHA-PEDA-PU was synthesized based on isophorone diisocyanate (IPDI), polyester dihydric alcohol (PDHA), dimethylol propionic acid (DMPA), pentaerythritol diacrylate (PEDA), 2-hydroxyethyl acrylate (HEA) and triethylamine (TEA). Acrylate groups were incorporated in the side and end of PDHA-PEDA-PU chain. The C=C content in the chain can be controlled easily through the change of IPDI/PDHA/PEDA ratio. Fourier transform infrared spectroscopy (FTIR) was used to identify the structure of prepolymer, aqueous dispersion and cured polyurethane. The curing rule of the polyurethane for different C=C content has been investigated depending on the change of C=C content during the curing process. The hardness, thermal stability and scrub resistance to MEK of UV cured PDHA-PEDA-PU were also discussed for the samples with different C=C content.
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Key words:
- UV curable
- / aqueous dispersion
- / polyurethane
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