Advanced coatings based upon non-isocyanate polyurethanes for industrial applications

Figovsky, OL; Shapovalov, L.; Axenov, O

doi:10.1007/bf02699601

Cited by 52 publications

(39 citation statements)

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“…30 Therefore, to resolve these problems, many groups focus on the improvement of NIPU by studying the relationship between performance and structure, e.g. Figovsky and coworkers 31 reported the synthesis of hybrid NIPU materials from carbonated soybean oil and bisphenol resin via a two-step pathway. In addition, several groups have reported the preparation of analogous NIPU elastomer which is derived from the modied amine.…”

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confidence: 99%

Non-isocyanate polyurethane/epoxy hybrid materials with different and controlled architectures prepared from a CO₂-sourced monomer and epoxy via an environmentally-friendly route

Wang

et al. 2017

RSC Adv.

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Polyurethane/epoxy hybrid materials from CO 2 -sourced monomer were prepared via an environmentallyfriendly and non-toxic route, which avioded the use of toxic isocyanate. A series of non-isocyanate polyurethane (NIPU)/epoxy hybrid materials, with different and controlled architectures, were synthesized from CO 2 , polypropylene glycol diglycidyl ether (PPGDGE), amines and diglycidyl ether of bisphenol-A (BADGE). Around 12 wt% CO 2 was incorporated into PPGDGE to form a five-membered cyclic carbonate (5CC-PPGDGE). The complete conversion and selectivity of PPGDGE were obtained.The kinetics of 5CC-PPGDGE was investigated by reacting it with 1,2-ethylenediamine (EDA) at different temperatures. NH 2 -terminated pre-polymers were obtained by reacting 5CC-PPGDGE with various excessive amines. Finally, the hybrid materials were obtained by curing pre-polymers with BADGE. The results showed that a high content of amine with more functional groups led to better mechanical performances than diamine-based hybrid materials. This is the first time that architectures have been controlled by altering the amine ratio and functionality. And these hybrid materials exhibited satisfactory mechanical performances. The DETA-based and TETA-based materials with high amine ratio exhibited a tensile strength of 15.0 MPa and 12.5 MPa, accompanied with elongation at break of 151.3% and 170.9%, respectively. The gel content, glass transition temperature and thermodynamic stability went up first and then declined with the increase of amine ratio, which demonstrated the architectures of hybrid materials ranged from defective to cross-linked and linear structures.

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confidence: 99%

Non-isocyanate polyurethane/epoxy hybrid materials with different and controlled architectures prepared from a CO₂-sourced monomer and epoxy via an environmentally-friendly route

Wang

et al. 2017

RSC Adv.

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“…Therefore, to improve the properties of NIPUs, it is desirable to develop catalysts to improve the reactivity of cyclic carbonates with primary amines, and also to design molecular structures having up to six, seven‐membered reactive cyclic carbonates . To enhance the physical properties of NIPUs, researchers have started developing hybrid NIPUs (HNIPUs), wherein NIPU is crosslinked with other suitable resins, such as epoxy resin, amino resin, silicone resin and ketonic resin …”

Section: Introductionmentioning

confidence: 99%

“…[25][26][27][28] To enhance the physical properties of NIPUs, researchers have started developing hybrid NIPUs (HNI-PUs), wherein NIPU is crosslinked with other suitable resins, such as epoxy resin, amino resin, silicone resin and ketonic resin. [28][29][30] In the study reported here, we developed bio-based HNIPUs using renewable sunflower oil (SFO) as a raw material and commercial epoxy resin as a chain extender. However, the overall performances of vegetable oil-based HNIPUs are still far from satisfactory.…”

Section: Introductionmentioning

confidence: 99%

In situ development of bio‐based polyurethane‐blend‐epoxy hybrid materials and their nanocomposites with modified graphene oxide via non‐isocyanate route

Doley

Sarmah

Sarkar

et al. 2018

Polymer International

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We developed a series of sunflower oil‐based non‐isocyanate polyurethane (NIPU)‐blend‐epoxy hybrid materials (HNIPUs) and their nanocomposites with amine‐functionalized graphene oxide (AF‐GO). Firstly, carbonated sunflower oil (CSFO) containing five‐membered cyclocarbonate groups was synthesized by the reaction of epoxidized sunflower oil with carbon dioxide (CO2) at a pressure of 50 bar and temperature of 110 °C. Then, a series of HNIPUs were synthesized using a mixture of CSFO and a commercially available epoxy resin in various amounts (10, 20 and 30 wt% with respect to CSFO) using isophorone diamine as the curing agent. The HNIPU with 30 wt% epoxy showed the best mechanical properties. Finally, nanocomposites of 30 wt% HNIPU‐based composition were prepared with various amounts of AF‐GO (0.3, 0.6 and 1.0 wt%) and were characterized using Fourier transform infrared and 1H NMR spectroscopies, X‐ray diffraction and scanning electron microscopy. These results emphasize the potentiality of this environmentally friendly approach for preparing renewable HNIPU and nanocomposite materials of high performances. © 2018 Society of Chemical Industry

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“…Cyclic carbonates are a promising reactant for producing PU-type materials without the use of isocyanates. Multifunctional cyclic carbonate monomers or prepolymers can react with multifunctional amine monomers or prepolymers to produce polyhydroxyurethane (PHU) [2,[11][12][13][14][15][16][17][18][19]; PHUs have received significant attention for their potential as PU replacements. Relative to urethane linkages, hydroxyurethane linkages have some advantages.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane/polyhydroxyurethane hybrid polymers and their applications as adhesive bonding agents

Leitsch

Heath

Torkelson

2016

International Journal of Adhesion and Adhesives

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A polyurethane/polyhydroxyurethane (PU/PHU) hybrid polymer was synthesized by reaction of a cyclic-carbonate-terminated prepolymer with triethylenetetramine without employing isocyanates in the final curing step. This cured elastomer contains traditional urethane linkages from the initial prepolymer reaction as well as hydroxyurethane linkages from the final chain extension reaction. The PU/PHU hybrid exhibits microphase separation as made apparent by the presence of two glass transitions and elastomeric properties with Young's modulus of 37 MPa and strain at break of 350 %. Most importantly, the PU/PHU hybrid polymer exhibits adhesion to polyimide, poly(vinyl chloride) (PVC), and aluminum substrates that is similar to or enhanced relative to those of polyurethane controls and literature values for typical polyurethane adhesives. In particular, the PU/PHU hybrid has T-peel forces of 7.8, 10.5, and 3.4 N/mm on polyimide, PVC, and aluminum, respectively, and undergoes predominately adhesive failure rather than cohesive failure. The application of this material as a model consumer-applied adhesive for potential replacement of isocyanate-based polyurethanes is also briefly discussed.

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Advanced coatings based upon non-isocyanate polyurethanes for industrial applications

Cited by 52 publications

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Non-isocyanate polyurethane/epoxy hybrid materials with different and controlled architectures prepared from a CO₂-sourced monomer and epoxy via an environmentally-friendly route

Non-isocyanate polyurethane/epoxy hybrid materials with different and controlled architectures prepared from a CO₂-sourced monomer and epoxy via an environmentally-friendly route

In situ development of bio‐based polyurethane‐blend‐epoxy hybrid materials and their nanocomposites with modified graphene oxide via non‐isocyanate route

Polyurethane/polyhydroxyurethane hybrid polymers and their applications as adhesive bonding agents

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Advanced coatings based upon non-isocyanate polyurethanes for industrial applications

Cited by 52 publications

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Non-isocyanate polyurethane/epoxy hybrid materials with different and controlled architectures prepared from a CO2-sourced monomer and epoxy via an environmentally-friendly route

Non-isocyanate polyurethane/epoxy hybrid materials with different and controlled architectures prepared from a CO2-sourced monomer and epoxy via an environmentally-friendly route

In situ development of bio‐based polyurethane‐blend‐epoxy hybrid materials and their nanocomposites with modified graphene oxide via non‐isocyanate route

Polyurethane/polyhydroxyurethane hybrid polymers and their applications as adhesive bonding agents

Contact Info

Product

Resources

About

Non-isocyanate polyurethane/epoxy hybrid materials with different and controlled architectures prepared from a CO₂-sourced monomer and epoxy via an environmentally-friendly route

Non-isocyanate polyurethane/epoxy hybrid materials with different and controlled architectures prepared from a CO₂-sourced monomer and epoxy via an environmentally-friendly route