An intumescent coating system modified with waste poly(ethylene terephthalate) as a substitute for dipentaerythritol

Kazarinov, Roman; Kowalczyk, Krzysztof; Łopiński, Jakub; Schmidt, Beata; Rokicka, Joanna

doi:10.1016/j.porgcoat.2018.10.006

Cited by 5 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, it should be noted that the samples containing almost theoretical stoichiometric ratios of PVAc and these ZBs (needed to complete crosslinking of the polymer by boron [7]) reached also significantly different values of SI, i.e., 22% for IC-ZB0/5 and 10% for IC-ZB6/7.5 ( Table 2). Thus, it can indicate that the water (released via the dehydration process of ZB6) positively affects the PVAc crosslinking phenomenon, e.g., by the facile hydrolysis of acetate groups and generation of poly(vinyl alcohol) (PVAl) or polyenes [23], boric acid (or other borate hydroxides) as well as zinc acetate dihydrate (as a basic form of this compound) [7,15] (Figure 7). According to the literature, boric acid needs cations (zinc) to be able to crosslink the PVAl matrix [24].…”

Section: Furnace Test Resultsmentioning

confidence: 99%

“…The thickness of charred samples (i.e., after the furnace test) was determined using a dial gauge with a stand (five measurements for the each sample). The intumescent index (INI) for the coatings was calculated according to the equation [15]:…”

Section: Methodsmentioning

confidence: 99%

“…For example, titanium dioxide increases mechanical strength of the chars [8][9][10][11][12]. Additionally, researches pay the attention to systems with nanofillers [1, 7,13,14], waste polymers [15] and bio-fillers [3,[16][17][18]. In a few cases, boron compounds (mainly zinc borate such as 2ZnO•3B2O3•3.5H2O) have been used as flame retardants in ICs and as modifiers of the mechanical properties of charred layers [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of the B:Zn:H2O Molar Ratio on the Properties of Poly(Vinyl Acetate) and Zinc Borate-Based Intumescent Coating Materials Exposed to a Quasi-Real Cellulosic Fire

et al. 2020

Self Cite

View full text Add to dashboard Cite

In order to investigate an influence of the B:Zn:H2O molar ratio on the fire protection efficiency of poly(vinyl acetate)-based thermoplastic intumescent coating materials (ICs), systems containing ammonium polyphosphate, melamine, pentaerythritol and different types of zinc borates (ZBs) were tested in a vertical position in quasi-real fire conditions. 3ZnO·2B2O3·6H2O (ZB6), 2ZnO·3B2O3·3.5H2O (ZB3.5) or 3ZnO·2B2O3 (ZB0) were added in amounts of 1–10 wt. parts/100 wt. parts of the other coating components mixture. Char formation processes and thermal insulation features were investigated using an open-flame furnace heated according to the cellulosic fire curve. Thermogravimetric features (DTG), chemical structures (FTIR) and mechanical strength of the ICs and the chars were analyzed as well. It was revealed that the type and dose of the ZBs significantly affect thermal insulation time (TIT) (up to 450 °C of a steel substrate) and sagging (SI) of the fire-heated coatings as well as the compressive strength of the created chars. The highest TIT value (+89%) was noted for the sample with 2.5 wt. parts of ZB3.5 while the lowest SI (−65%) was observed for the coatings containing 10 wt. parts of the hydrated borates (i.e., ZB3.5 or ZB6). The best mechanical strength was registered for the sample filled with the anhydrous modifier (3 wt. parts of ZB0). The presented results show that the ICs with the proper ZBs can be used for effective fire protection of vertically positioned steel elements.

show abstract

Section: Furnace Test Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of the B:Zn:H2O Molar Ratio on the Properties of Poly(Vinyl Acetate) and Zinc Borate-Based Intumescent Coating Materials Exposed to a Quasi-Real Cellulosic Fire

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…A gas flame-heated programmable laboratory furnace (with two sockets for steel plates covered with the tested coating) was used for the measurement of thermal insulation features of the prepared intumescent coatings [ 24 ]. Temperature in the furnace chamber was automatically regulated (acc.…”

Section: Methodsmentioning

confidence: 99%

Thermoplastic Intumescent Coatings Modified with Pentaerythritol-Occluded Carbon Nanotubes

Tomczak¹,

Łopiński

Kowalczyk

et al. 2021

Materials

Self Cite

View full text Add to dashboard Cite

A thermoplastic intumescent coating system (IC) based on poly(vinyl acetate) was modified by two forms of multiwalled carbon nanotubes (CNTs), i.e., by a nanofiller powder and its solid dispersions in pentaerythritol (PER-CNTs). It was revealed that only the PER-CNTs modifier allows us to obtain solvent-borne ICs with a relatively high CNTs concentration (1–3 wt. parts of CNTs/100 wt. parts of paint solids) and acceptable application viscosity. Thermal insulation time (TIT) and intumescent factor (IF) of the ICs on a steel substrate (a fire test according to a cellulosic fire curve), as well as morphology, chemical structure (by the FT-IR technique) and mechanical strength of the charred systems, were investigated. It was found that the CNTs powder decreases TIT and IF values while PER-occluded CNTs improve these parameters (e.g., +4.6 min and +102% vs. an unmodified sample, respectively). Compressive strength of the charred ICs was improved by the PER-CNTs modifier as well.

show abstract

“…A very similar furnace design was used by Tomczak et al [64] and Kazarinov et al [65]. They used an automatically regulated propane-butane gas burner to follow the Eurocode 1 (EN 1991-1-2) [41] cellulosic fire curve.…”

Section: Heat Sourcementioning

confidence: 99%

Review of heat exposure equipment and in-situ characterisation techniques for intumescent coatings

Dreyer

Weinell

Dam‐Johansen

et al. 2021

Fire Safety Journal

View full text Add to dashboard Cite

An intumescent coating system modified with waste poly(ethylene terephthalate) as a substitute for dipentaerythritol

Cited by 5 publications

References 17 publications

Effect of the B:Zn:H2O Molar Ratio on the Properties of Poly(Vinyl Acetate) and Zinc Borate-Based Intumescent Coating Materials Exposed to a Quasi-Real Cellulosic Fire

Effect of the B:Zn:H2O Molar Ratio on the Properties of Poly(Vinyl Acetate) and Zinc Borate-Based Intumescent Coating Materials Exposed to a Quasi-Real Cellulosic Fire

Thermoplastic Intumescent Coatings Modified with Pentaerythritol-Occluded Carbon Nanotubes

Review of heat exposure equipment and in-situ characterisation techniques for intumescent coatings

Contact Info

Product

Resources

About