Properties data of phenolic resins synthetized for the impregnation of saturating Kraft paper

Thébault, Marion; Kandelbauer, Andreas; Eicher, Iris; Geyer, Björn; Zikulnig-Rusch, Edith

doi:10.1016/j.dib.2018.07.006

Cited by 7 publications

(8 citation statements)

References 9 publications

(7 reference statements)

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“…The penetration behavior of resin into a standard reference decorative paper sheet was investigated using a self‐made penetration time measurement device. The working principle of the device is described in detail in earlier publications 29,30,37,40 . In short, this method is based on exploiting the differences in electrical conductivity between dry and resin‐wetted paper samples.…”

Section: Methodsmentioning

confidence: 99%

Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

Seidl

Weiss

Zikulnig-Rusch

et al. 2020

J of Applied Polymer Sci

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Melamine‐formaldehyde resins are widely used for decorative paper impregnation. Resin properties relevant for impregnation are mainly determined already at the stage of resin synthesis by the applied reaction conditions. Thus, understanding the relationship between reaction conditions and technological properties is important. Response surface methodology based on orthogonal parameter level variations is the most suitable tool to identify and quantify factor effects and deduce causal correlation patterns. Here, two major process factors of MF resin synthesis were systematically varied using such a statistical experimental design. To arrive at resins having a broad range of technological properties, initial pH and M:F ratio were varied in a wide range (pH: 7.9–12.1; M:F ratio: 1:1.5–1:4.5). The impregnation behavior of the resins was modeled using viscosity, penetration rate and residual curing capacity as technological responses. Based on the response surface models, nonlinear and synergistic action of process factors was quantified and a suitable process window for preparing resins with favorable impregnation performance was defined. It was found that low M:F ratios (~1:2–1:2.5) and comparatively high starting pHs (~pH 11) yield impregnation resins with rapid impregnation behavior and good residual curing capacity.

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Section: Methodsmentioning

confidence: 99%

Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

Seidl

Weiss

Zikulnig-Rusch

et al. 2020

J of Applied Polymer Sci

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“…Chemical shifts are reported in parts per million and referenced to the signals of deuterated solvents. 1 H NMR chemical shifts are reported relative to the signals of tetramethylsilane. The spectra were processed using the MestReNova Lab package (version 12.0.4, MESTRELAB RESEARCH, S.L., Santiago de Compostela, Spain).…”

Section: Measurementsmentioning

confidence: 99%

“…Based on the data obtained from 1 H NMR spectroscopy, it can be concluded that some branched triazine structures insoluble in toluene are formed. Thus, carrying out the reaction in a toluene/isopropanol solvent mixture gives a much cleaner product than in pure toluene medium.…”

Section: Figure 2 Synthesis Of Benzoxazine Monomers Based On Diaminesmentioning

confidence: 99%

“…Phenol-formaldehyde (phenolic) resins are widely used in construction [ 1 ], electronics [ 2 ] and the aerospace sector [ 3 ] because of their low cost and relatively high performance, for example, in heat and fire resistance [ 4 ]. However, phenolic resins have a number of disadvantages that limit their use: the release of volatile substances during curing and the formation of micropores inside the material, which impair the properties of the final products or require autoclave processing to obtain high-performance material [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

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Benzoxazine Monomers and Polymers Based on 3,3′-Dichloro-4,4′-Diaminodiphenylmethane: Synthesis and Characterization

et al. 2021

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To reveal the effect of chlorine substituents in the ring of aromatic amine on the synthesis process of benzoxazine monomer and on its polymerization ability, as well as to develop a fire-resistant material, a previously unreported benzoxazine monomer based on 3,3′-dichloro-4,4′-diaminodiphenylmethane was obtained in toluene and mixture toluene/isopropanol. The resulting benzoxazine monomers were thermally cured for 2 h at 180 °C, 4 h at 200 °C, 2 h at 220 °C. A comparison between the rheological, thermal and fire-resistant properties of the benzoxazines based on 3,3′-dichloro-4,4′-diaminodiphenylmethane and, for reference, 4,4′-diaminodimethylmethane was made. The effect of the reaction medium on the structure of the oligomeric fraction and the overall yield of the main product were studied and the toluene/ethanol mixture was found to provide the best conditions; however, in contrast to most known diamine-based benzoxazines, synthesis in the pure toluene is also possible. The synthesized monomers can be used as thermo- and fire-resistant binders for polymer composite materials, as well as hardeners for epoxy resins. Chlorine-containing polybenzoxazines require more severe conditions for polymerization but have better fire resistance.

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“…Phenol‐formaldehyde (phenolic) resins are widely used in construction, 1 electronics 2 and the aerospace sector 3 because of the low cost and relatively high performance, for example, heat and fire resistance 4 . However, phenolic resins have a number of disadvantages that limit their use, for example, the release of volatile substances during curing and the formation of micropores inside the material, which impair the properties of the final products or require autoclave processing to obtain high‐performance material 5 .…”

Section: Introductionmentioning

confidence: 99%

Benzoxazine monomers based on aromatic diamines and investigation of their polymerization by rheological and thermal methods

Sarychev

Киреев

Khmelnitskiy

et al. 2020

J of Applied Polymer Sci

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In the present article with the aim to find new polybenzoxazines with improved thermal properties, new benzoxazine monomers based on phenol and the following aromatic diamines were synthesized: 3,4 0-oxydianiline (P-3,-4 0 oda); o-tolidine (P-ot); m-tolidine (P-mt) and 4,4 0-(1,3-phenylenedioxy) dianiline (P-tper) and their comparison with the previously known benzoxazines based on 4,4 0-diaminodiphenylmethane (P-ddm); 4,4 0oxydianiline (P-4,4 0-oda) and 2,2-Bis[4-(4-aminophenoxy)phenyl]propane (Pbapp). The dependence of the thermal and rheological characteristics on the structure of benzoxazine monomers based on various diamines was estimated and possible methods for their processing were identified. All the polybenzoxazines obtained in this work have high char yield and reduced flammability. It was found that the structure of the diamine can have a fundamental effect on both the rheological properties and heat resistance of polybenzoxazines. The benzoxazine monomers P-ddm, P-tper and P-4,4 0 oda retain viscosity up to 1 Pa s. at 110 C for 2 h, the P-tper monomer with a resorcinol bridge has about five times lower viscosity compared to the P-bapp monomer with a bisphenol A bridge. Polybenzoxazines based on the monomers P-ddm, P-mt, P-bapp and P-tper show excellent thermal stability with a temperature of 10% weight loss above 400 C. In particular, T g of P-3,4 0 oda and P-mt monomers is relatively high (202 and 239 C, respectively), while P-ot's is unusually low (115 C), which may be caused by the specific effect of the substituents in the aromatic ring of the amine and their position.

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Properties data of phenolic resins synthetized for the impregnation of saturating Kraft paper

Cited by 7 publications

References 9 publications

Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

Benzoxazine Monomers and Polymers Based on 3,3′-Dichloro-4,4′-Diaminodiphenylmethane: Synthesis and Characterization

Benzoxazine monomers based on aromatic diamines and investigation of their polymerization by rheological and thermal methods

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