TY - JOUR
T1 - Thermostability and flame retardance of green functional two-component waterborne polyurethane coatings with nanoparticles
AU - Yin, Xuan
AU - Dong, Chenghao
AU - Chai, Chunpeng
AU - Luo, Yunjun
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/9
Y1 - 2018/9
N2 - A new kind of green and functional two-component flame-retardant waterborne polyurethane and its coating were synthesized through adding polyurethane polyol dispersions, hydrophilic nanoTiO2 and hydrophilic curing agent. The properties and analysis were characterized via FTIR, laser particle analyzer, rheometer, TEM, TGA, TGA-FTIR, LOI tester, SEM, UV–vis spectrum, water and solvent resistance. The results showed the tensile strength counld reach 22.3 MPa. And the nanoTiO2 delayed speed of thermal decomposition to improve thermostability of two-component waterborne polyurethane. Larger quantities of hydrophilic nanoTiO2 did not produce a larger unbroken carbon yield surface or thicker carbon layers, but effectively produced a condensed phase flame-retardant effect with OP550 during burning. Besides, LOI and UL-94 also reached over 29.4% and V–0 respectively. The UV and visible light shielding noticeably increased with the adding nanoTiO2. The 0.5% content of nanoTiO2 had the optimal properties in green and functional two-component waterborne polyurethane coatings.
AB - A new kind of green and functional two-component flame-retardant waterborne polyurethane and its coating were synthesized through adding polyurethane polyol dispersions, hydrophilic nanoTiO2 and hydrophilic curing agent. The properties and analysis were characterized via FTIR, laser particle analyzer, rheometer, TEM, TGA, TGA-FTIR, LOI tester, SEM, UV–vis spectrum, water and solvent resistance. The results showed the tensile strength counld reach 22.3 MPa. And the nanoTiO2 delayed speed of thermal decomposition to improve thermostability of two-component waterborne polyurethane. Larger quantities of hydrophilic nanoTiO2 did not produce a larger unbroken carbon yield surface or thicker carbon layers, but effectively produced a condensed phase flame-retardant effect with OP550 during burning. Besides, LOI and UL-94 also reached over 29.4% and V–0 respectively. The UV and visible light shielding noticeably increased with the adding nanoTiO2. The 0.5% content of nanoTiO2 had the optimal properties in green and functional two-component waterborne polyurethane coatings.
KW - Flame retardancy
KW - Hydrophilic nanoTiO
KW - Light shielding property
KW - TGA-FTIR
KW - Thermostability
UR - http://www.scopus.com/inward/record.url?scp=85047064597&partnerID=8YFLogxK
U2 - 10.1016/j.porgcoat.2018.01.027
DO - 10.1016/j.porgcoat.2018.01.027
M3 - Article
AN - SCOPUS:85047064597
SN - 0300-9440
VL - 122
SP - 119
EP - 128
JO - Progress in Organic Coatings
JF - Progress in Organic Coatings
ER -