Impact of phenolic resin preparation on its properties and its penetration behavior in Kraft paper

Thébault, Marion; Kandelbauer, Andreas; Zikulnig-Rusch, Edith; Putz, Robert; Jury, Sandra; Eicher, Iris

doi:10.1016/j.eurpolymj.2018.05.003

Cited by 19 publications

(12 citation statements)

References 25 publications

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“…It is commonly employed in the industry as a termination criterion to stop resin synthesis. For phenolic resins, Thebault et al showed that resin polarity has a considerable influence on the impregnation behavior 29 . In the present study, all resins were designed to have the same water tolerance value of 3.5 ml per ml resin since this water tolerance is generally typical for resins with good impregnation behavior.…”

Section: Resultsmentioning

confidence: 95%

“…The penetration behavior of the resins into décor paper was characterized using recently patented equipment 37 . This device was used so far for investigating the penetration times through Kraft paper of phenol‐formaldehyde 29 and lignin substituted phenol‐formaldehyde 30 resins. The measurement principle is based on the changes in conductivity upon paper imbibition.…”

Section: Resultsmentioning

confidence: 99%

“…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%

“…Consequently, the technological features studied are mainly focused on mechanical strength and hydrolytic stability of the resulting boards. In contrast, impregnation resins are much less well characterized and despite their economic importance only few studies are found focusing on the technological profile important for paper impregnation 29–33 and surface coating 8,23,34–36 . The present article intends to fill this gap to some extent.…”

Section: Introductionmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“… Data accessibility The data are available in this article. Related research article These data are supplementary to the article [1] . …”

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confidence: 99%

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

et al. 2018

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The quality of decorative laminates boards depends on the impregnation process of Kraft papers with a phenolic resin, which constitute the raw materials for the manufacture of the cores of such boards. In the laminates industries, the properties of resins are adapted via their syntheses, usually by mixing phenol and formaldehyde in a batch, where additives, temperature and stirring parameters can be controlled. Therefore, many possibilities of preparation of phenolic resins exist, that leads to different combinations of physico-chemical properties. In this article, the properties data of eight phenolic resins synthetized with different parameters of pH and reaction times at 60 °C and 90 °C are presented: the losses of pH after synthesis and the dynamic viscosities measured after synthesis and once the solid content is adjusted to 45%w/w in methanol. Data acquired by Differential Scanning Calorimetry (DSC) of the resins and Inverse Gas Chromatography (IGC) of cured solids are given as well.

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Multifunctional wood composites based on Camellia oleifera shell with harsh‐weather and self‐mildew resistance

et al. 2022

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Camellia oleifera shell is rich in lignin and tea saponin and other natural active substances, and it is used to directly prepare fuel and biochar, which are low‐value applications. Inspired by the tea oil fruit shell, a new type of wood‐based composite was designed, which was bonded between inner layers and coated on the surface with Camellia oleifera shell‐based phenolic resin through a one‐step manufacturing process. The acid catalyst type, reaction time, and substitution ratios (Camellia oleifera shell/phenol) were used to optimize the formulation and process of Camellia oleifera shell phenolic resin. The chemical structure, wet bonding strength, harsh‐weather resistance, thermal properties, and flame resistance of the composites (Camellia oleifera shell phenolic resin surface coated plywood [CSPCPs]) were evaluated. The results indicated that the CSPCPs showed better‐wet bonding strength and thermal properties and harsh‐weather resistance compared with the common uncoated plywood. CSPCP‐3 presented the maximum wet bonding strength of 1.63 MPa. The limiting oxygen indexes of the CSPCPs were all higher than that of common plywood. All CSPCPs displayed excellent acid rain corrosion resistance, with little mass loss under simulated acid rain conditions. Grayscale was used to compare the samples' color to assess their self‐mildew resistance. As the amount of shell increased, the mold resistance of CSPCPs increased. CSPCP‐3 showed excellent comprehensive performance and can be a multifunctional wood composite suitable for outdoor applications.

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Impact of phenolic resin preparation on its properties and its penetration behavior in Kraft paper

Cited by 19 publications

References 25 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

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

Multifunctional wood composites based on Camellia oleifera shell with harsh‐weather and self‐mildew resistance

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