Phenolic Resins in Rubbers and Adhesives

Knop, André; Scheib, Walter

doi:10.1007/978-3-662-11309-7_17

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…For phenolic resin and HMTA, furfural has been used with success. 7,8,17 However, to our knowledge, there has been no experimental evidence supporting these assumed attributes associated with furfural. In this study, we use a combination of techniques to clarify the dual role of furfural in the presence of an HMTA/phenolic resin mixture.…”

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confidence: 84%

“…A crosslinker such as hexamethylenetetramine (HMTA) is usually employed to react with the phenolic resin to form a stable 3-dimensional matrix to "glue" the inorganic particles together. 7,8 Although this system has been used commercially for many years, because of the complicated curing reaction and the many difficulties in characterizing a crosslinked structure, a number of fundamental questions remain unresolved. Our current study clarifies the role of the plasticizer, hereafter referred to as furfural, usually used in various manufacturing processes to induce miscibility at the molecular level of the two principal components of this reaction, phenolic resin and HMTA, to form the 3-dimensional network.…”

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confidence: 99%

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Path to achieving molecular dispersion in a dense reactive mixture

Patel

Xiang

Hsu

et al. 2015

J. Polym. Sci. Part B: Polym. Phys.

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A uniform dispersion of reactants is necessary to achieve a complete reaction involving multicomponents. In this study, we have examined the role of plasticizer in the reaction of two seemingly unlikely reactants: a highly crystalline hexamethylenetetramine (HMTA) and a strongly hydrogen bonded phenol formaldehyde resin. By combining information from NMR, infrared spectroscopy and differential scanning calorimetry, we were able to determine the role of specific intermolecular interactions necessary for the plasticizer to dissolve the highly crystalline HMTA and to plasticize the phenol formaldehyde resin in this crosslinking reaction. The presence of the plasticizer increased the segmental mobility, disrupted the hydrogen bonded matrix, and freed the hydroxyl units, which further increased the solubility of the HMTA. Both the endothermic and exothermic transitions are accounted for in the calorimetric data obtained. For the first time, it is possible to obtain the effective molar ratio of each component needed to complete the crosslinking reaction efficiently.

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confidence: 84%

mentioning

confidence: 99%

Path to achieving molecular dispersion in a dense reactive mixture

Patel

Xiang

Hsu

et al. 2015

J. Polym. Sci. Part B: Polym. Phys.

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“…Однако наличие капилляров и пор в переходных областях «связующее -фторопластовые нити» и «связующеесубстрат» делают клеевое соединение чувствительным к водным средам. Водопоглощение рассматриваемого композита в этом случае достигает 7 % по весу [3].…”

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Antifriction Composites in Active Aquatic Environments

Vlasenko

2013

Vestnik Donskogo gosudarstvennogo tehničeskogo universiteta

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The experimental results of the antifriction polymer composite coating strength in the active aquatic environments with pH index varied in the range of 1.68…12.45 are presented. The coating strength is defined by the adhesion strength of the zone ‘coating-host substrate’. The interlaminate strength at the bending angle of 180 degrees is chosen as a criterion of the adhesion strength. Adequate regression models which allow calculating the coating adhesion strength value and estimating its retained strength percentage are obtained. The study on the polymer coating creep strain contribution to the working clearance forming in the tribocoupling is resulted. The obtained results show the significant increase of the composite coating stiffness at the relatively light loads applied that is caused by the capillary condensation of the aquatic environments in the micropores, and by their further diffusion into the composite layer. All the obtained data give a good indication of the antifriction coating properties degradation in the acid and alkaline aquatic solutions, as well as of the probable the antifriction coating life-time reducing.

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Aging mechanism of phenolic resin–nitrile butadiene composites

Cooper

1991

Polymer Engineering & Sci

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The aging mechanism of phenolic resin‐nitrile butadiene composites has been investigated. Using solvent extraction and chromatographic analysis of the extract using dual detectors it was shown that the rubber component was well crosslinked. The phenolic component however was not fully crosslinked, although it would have been expected from the cure conditions employed. With increased time, at temperatures near ambient, the phenolic resin continued to react and caused increased brittleness of the composite.

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Phenolic Resins in Rubbers and Adhesives

Cited by 7 publications

References 5 publications

Path to achieving molecular dispersion in a dense reactive mixture

Path to achieving molecular dispersion in a dense reactive mixture

Antifriction Composites in Active Aquatic Environments

Aging mechanism of phenolic resin–nitrile butadiene composites

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