Curing and combustion properties of a PU‐coating system with UV‐reactive phosphazene

Huang, Woei-Kae; Chen, Kwei-Ju; Yeh, Jen‐Taut; Chen, Kan-Nan

doi:10.1002/app.10776

Cited by 30 publications

(14 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A UV‐curable PU coating system was formulated by the combination of a PU acrylate (Scheme ) oligomer and a UV‐reactive phosphazene monomer 75. The OI value of the original coating was 22 and was increased to 24, 25 and 27 with 10, 20 or 40 phr of the phosphazene monomer, respectively.…”

Section: Flame Retardancymentioning

confidence: 99%

Thermal decomposition, combustion and fire‐retardancy of polyurethanes—a review of the recent literature

Levchik

Weil²

2004

Polymer International

388

251

View full text Add to dashboard Cite

An overview is presented of the literature on thermal decomposition, combustion and fireretardancy of polyurethane (PU) elastomers, PU-based coatings, rigid and flexible PU foams. A brief overview of the structure of PU polymeric networks is helpful for a better understanding of the thermal decomposition and combustion phenomena. Literature sources were mostly taken from the publications of 1995 and later; however, for a basic description of the structural and thermal decomposition principles, older publication have also been cited. New developments in the efficient halogen-containing additives and reactive copolymers are described. However, major progress in the area of flame-retardant PUs in recent years is found in the field of phosphorus-or silicon-containing products, especially reactive ones. Inorganic additives remain of great interest, especially in PU-based intumescent coatings.

show abstract

Section: Flame Retardancymentioning

confidence: 99%

Thermal decomposition, combustion and fire‐retardancy of polyurethanes—a review of the recent literature

Levchik

Weil²

2004

Polymer International

388

251

View full text Add to dashboard Cite

show abstract

“…A series of multi‐AZ curing agents have been applied for a curing reaction of aqueous‐based PU,3–11 water‐reducible epoxy resin,12–15 aqueous‐based acrylate emulsion,16, 17 aqueous polymeric inks18, 19 and their hybridized resins 20, 21. Moreover, phosphorus‐containing multi‐AZ curing agent is used as a curing agent as well as a reactive flame retardant 22–25. Key of these curing processes is based on a ring‐opening reaction between AZ moiety of curing agent and carboxylic acid‐containing aqueous polymer on drying.…”

Section: Introductionmentioning

confidence: 99%

New crosslinked polymer from a rapid polymerization of acrylic acid with triaziridine‐containing compound

Chen¹,

Wang²,

Huang³

et al. 2007

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

A triaziridine containing compound, trimethylolpropane tris(1-aziridinepropionate) (TMPTA-AZ), is prepared from a Michael addition of aziridine (AZ) with trimethylolpropane triacrylate (TMPTA). A rapid polymerization of acrylic acid (AA) with TMPTA-AZ occurred at ambient temperature without catalyst. This polymerization process involves three subsequent reactions are proposed: (1) An exothermic neutralization takes place between AA and TMPTA-AZ. (2) That neutralization heat triggers AZ ring-opening reaction and that carboxyl group (of AA) plays as a nucleophile and results in an amino ester bond formation. (3) A final crosslinked polymer is obtained from that amino group reacts with its acrylic double bond via an intermolecular Michael addition reaction. These new crosslinked polymers with various performance properties are obtained from a mixture of AA and TMPTA-AZ in different ratios and post-heating.

show abstract

“…However, the film was combustible, which greatly limited its wide applications in high-tech areas. PPZ, as a class of halogen-free and highly efficient FR [25,26], has been widely used in the flame retardation improvement of polymeric textiles [27,28], coatings [29], and foams [30]. In addition, as an organic-inorganic hybrid FR [31], PPZ can usually improve the thermal stability of the common polymer matrix due to the high thermal stability of the PPZ FR.…”

Section: Pi Synthesis and Film Preparationmentioning

confidence: 99%

Enhancement of Flame Retardancy of Colorless and Transparent Semi-Alicyclic Polyimide Film from Hydrogenated-BPDA and 4,4′-oxydianiline via the Incorporation of Phosphazene Oligomer

Jiang

Zhang

et al. 2020

Polymers

View full text Add to dashboard Cite

Enhancement of flame retardancy of a colorless and transparent semi-alicyclic polyimide (PI) film was carried out by the incorporation of phosphazene (PPZ) flame retardant (FR). For this purpose, PI-1 matrix was first synthesized from hydrogenated 3,3′,4,4′-biphenyltetracarboxylic dianhydride (HBPDA) and 4,4′-oxydianiline (ODA). The soluble PI-1 resin was dissolved in N,N-dimethylacetamide (DMAc) to afford the PI-1 solution, which was then physically blended with PPZ FR with the loading amounts in the range of 0–25 wt.%. The PPZ FR exhibited good miscibility with the PI-1 matrix when its proportion was lower than 10 wt.% in the composite films. PI-3 composite film with the PPZ loading of 10 wt.% showed an optical transmittance of 75% at the wavelength of 450 nm with a thickness of 50 μm. More importantly, PI-3 exhibited a flame retardancy class of UL 94 VTM-0 and reduced total heat release (THR), heat release rate (HRR), smoke production rate (SPR), and rate of smoke release (RSR) values during combustion compared with the original PI-1 film. In addition, PI-3 film had a limiting oxygen index (LOI) of 30.9%, which is much higher than that of PI-1 matrix (LOI: 20.1%). Finally, incorporation of PPZ FR decreased the thermal stability of the PI films. The 10% weight loss temperature (T10%) and the glass transition temperature (Tg) of the PI-3 film were 411.6 °C and 227.4 °C, respectively, which were lower than those of the PI-1 matrix (T10%: 487.3 °C; Tg: 260.6 °C)

show abstract

Curing and combustion properties of a PU‐coating system with UV‐reactive phosphazene

Cited by 30 publications

References 12 publications

Thermal decomposition, combustion and fire‐retardancy of polyurethanes—a review of the recent literature

Thermal decomposition, combustion and fire‐retardancy of polyurethanes—a review of the recent literature

New crosslinked polymer from a rapid polymerization of acrylic acid with triaziridine‐containing compound

Enhancement of Flame Retardancy of Colorless and Transparent Semi-Alicyclic Polyimide Film from Hydrogenated-BPDA and 4,4′-oxydianiline via the Incorporation of Phosphazene Oligomer

Contact Info

Product

Resources

About