Preparation of UV-curable strippable coatings based on polyurethane acrylate from CO2-polyol and different isocyanates

Liu, Jingcheng; Huang, Jun; Li, Jian; Zhang, Yue; Li, Xiaojie

doi:10.1016/j.porgcoat.2023.107865

Cited by 3 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mixture was stirred magnetically, and then the HDI trimer mixture was added dropwise to the flask under a nitrogen atmosphere. The reaction was performed at 60 °C for 4 h and then 80 °C for 0.5 h. The -NCO group in the solution was determined according to the toluene-dibutylamine method (ASTM D2572-19) [ 18 , 19 ]. The polymer solution was precipitated with petroleum ether and re-dissolved in ethyl acetate, and the purification of PUA monomer was repeated at least twice.…”

Section: Methodsmentioning

confidence: 99%

“…Ultraviolet (UV)-cured PU coatings have excellent characteristics such as fast curing speed, environmentally friendly, high hardness, high transparency, etc. [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. Due to the low molecular weight of the UV-curing monomers used, UV-cured PU coatings have higher crosslinking density and also have the potential to be applied in the CWA resistance coating.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

UV-Cured Highly Crosslinked Polyurethane Acrylate to Serve as a Barrier against Chemical Warfare Agent Simulants

Chen,

Xiao,

et al. 2024

Polymers

View full text Add to dashboard Cite

Ultraviolet (UV) curing is an efficient and environmentally friendly curing method. In this paper, UV-cured polyurethane acrylates (PUAs) were investigated as potential military coatings to serve as barriers against chemical warfare agents (CWAs). Seven UV-cured PUA coatings were formulated utilizing hydroxyethyl methacrylate-capped hexamethylene diisocyanate trimer (HEMA-Htri) and trimethylolpropane triacrylate-capped polycarbonate prepolymer (PETA-PCDL) as the PUA monomers. Isobornyl acrylate (IBOA) and triethyleneglycol divinyl ether (DVE-3) were employed as reactive diluents. Gas chromatography was utilized to investigate the constitutive relationships between the structures of the PUA coatings and their protective properties against simulant agents for CWAs, including dimethyl methylphosphonate (DMMP), a nerve agent simulant, and 2-chloroethyl ethyl sulfide (CEES), a mustard simulant. The glass transition temperature (Tg) and crosslinking density (υe) of PUAs were found to be crucial factors affecting their ability to serve as barriers against CWAs. The incorporation of IBOA units led to enhanced Tg and barrier performance of the PUAs, resulting in a DMMP retention of less than 0.5% and nearly 0 retention of CEES. However, an excessive introduction of polycarbonate chains decreased the υe and barrier performance of the PUAs. These findings may offer valuable insights for enhancing the protection of UV-cured PU coatings against CWAs.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

UV-Cured Highly Crosslinked Polyurethane Acrylate to Serve as a Barrier against Chemical Warfare Agent Simulants

Chen,

Xiao,

et al. 2024

Polymers

View full text Add to dashboard Cite

show abstract

“…The presence of urethane bonds in polyurethane leads to the formation of intermolecular and intramolecular hydrogen bonds, provides many physical cross-linking points and results in the excellent tensile properties of the product [ 19 ]. PUAs are generally synthesized by the reaction of NCO-terminated polyurethane and acrylate-terminated alcohol [ 20 , 21 , 22 ] or polyurethane alcohol with (meth)acrylic anhydride [ 23 , 24 ] and (meth) acryloyl chloride [ 25 , 26 ]. Isocyanate, phosgene and amines, the raw materials for the preparation of isocyanate, are highly toxic compounds [ 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Non-Isocyanate Urethane Acrylate Derived from Isophorone Diamine: Synthesis, Characterization and Its Application in 3D Printing

Zhang,

Zan,

Yin

et al. 2024

Molecules

View full text Add to dashboard Cite

In this paper, urethane-based acrylates (UA) were prepared via an environmentally friendly non-isocyanate route. Isophorone diamine (IPDA) reacted with ethylene carbonate (EC), producing carbamate containing amine and hydroxyl groups, which further reacted with neopentyl glycol diacrylate (NPGDA) by aza Michael addition, forming UA. The structures of the obtained intermediates and UA were characterized by 1H NMR and electrospray ionization high-resolution mass spectrometry (ESI-HRMS). The photopolymerization kinetics of UA were investigated by infrared spectroscopy. The composite with obtained UA can be UV cured quickly to form a transparent film with a tensile strength of 21 MPa and elongation at break of 16%. After UV curing, the mono-functional urethane acrylate was copolymerized into the cross-linked network in the form of side chains. The hydroxyl and carbamate bonds on the side chains have high mobility, which make them easy to form stronger dynamic hydrogen bonds during the tensile process, giving the material a higher tensile strength and elongation at break. Therefore, the hydrogen bonding model of a cross-linked network is proposed. The composite with UA can be 3D printed into models.

show abstract

An Investigation Into the Relationship Between the Performance and Tactility of UV‐Cured Elastic Soft‐Feel Coatings Based on Different Photo‐Initiator

Tan,

et al. 2024

Polymers for Advanced Techs

View full text Add to dashboard Cite

In this work, polyurethane acrylate (PUA) was successfully synthesized using polypropylene carbonate diol (PPC2000), isophorone diisocyanate (IPDI), and hydroxyethyl acrylate (HEA) as raw materials. Then, a series of UV‐curable elastic soft‐feel coatings based on different photo‐initiators were successfully prepared. The double‐bond conversion rate, thermal stability, storage modulus, roughness, contact angle, and other properties of the coatings were tested. The results indicated that the UV‐curable elastic soft‐feel coatings achieved a high double‐bond conversion rate and demonstrated good adhesion, chemical resistance, wear resistance, and thermal stability. Moreover, it was found that the coatings with low storage modulus, low roughness, and low surface energy displayed excellent tactile feel.

show abstract

Preparation of UV-curable strippable coatings based on polyurethane acrylate from CO2-polyol and different isocyanates

Cited by 3 publications

References 18 publications

UV-Cured Highly Crosslinked Polyurethane Acrylate to Serve as a Barrier against Chemical Warfare Agent Simulants

UV-Cured Highly Crosslinked Polyurethane Acrylate to Serve as a Barrier against Chemical Warfare Agent Simulants

Non-Isocyanate Urethane Acrylate Derived from Isophorone Diamine: Synthesis, Characterization and Its Application in 3D Printing

An Investigation Into the Relationship Between the Performance and Tactility of UV‐Cured Elastic Soft‐Feel Coatings Based on Different Photo‐Initiator

Contact Info

Product

Resources

About