Phenol-formaldehyde resin

CAS

9003-35-4

Catalog Number

ACM9003354

Category

Main Products

Molecular Weight

122.12

Molecular Formula

C7H6O2

MSDS COA Spec Sheet

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Phenol-formaldehyde resins for photochemical temperature sensing

Spectral output of different PF resin samples at 300 K, normalized by the maximum intensity of the brightest sample, P1

Claucherty, Steven, and Hirotaka Sakaue. Sensors 18.6 (2018): 1756.

Phenol-formaldehyde (PF) resins have several applications as optical temperature sensors. Recent developments in optical luminescence sensors allow for global measurements on the surface of a test article, beyond traditional point measurements. Global temperature distributions are particularly useful when validating computational models or mapping temperatures on complex geometries, and can be used to calculate surface heat flux values. Temperature sensitive coatings (TSPs) are a new chemical approach to obtaining these global temperature measurements, but there are still challenges to overcome to make them a reliable tool. Sensors with a wide range of temperature sensitivity are needed to provide maximum utility, especially for testing across large temperature gradients. Naturally luminescent materials such as PF resins offer an attractive alternative to chemical sensor coatings, so PF resins were investigated. Different PF resin samples were statically tested using two binder materials to reinforce the material: cloth and paper. The material demonstrated temperature sensitivity up to -0.8%/K, demonstrating the usefulness of PF resins as temperature sensors.
The spectral luminescence output of the PF resin sample was captured at different temperatures, gradually increasing to 500 K, using a spectrometer with a 490 nm high-pass filter under 468 nm excitation. Based on theory and previous TSP studies using different types of luminophores, it is expected that the emission intensity decreases with increasing temperature. Static calibration of the PF resin sample was performed in 20 K increments, from 100 K to 500 K. The temperature was measured at the interface of the sample and the heated/cooled element, so the sample was left for five minutes at each temperature step to allow a uniform temperature to be reached throughout the sample before measurements were taken. The measurement chamber was first purged of air and then pressurized to measurement conditions using dry air to prevent condensation at lower temperatures.

Phenol-formaldehyde resins as corrosion inhibitors in acidic solutions

XPS spectra for mild steel immersed in 1 M HCl solution with inhibitor PF4

Chugh, Bhawna, et al. Journal of Molecular Liquids 330 (2021): 115649.

Four phenol-formaldehyde resins containing azomethine functionalized benzothiazole moiety were developed with the aim of combating the impending degradation of mild steel due to corrosion in corrosive acidic media. The present work included empirical gravimetric and electrochemical techniques for analyzing the corrosion inhibition behavior of the developed resins followed by subsequent surface characterization using different analytical procedures. The synthesized polymer resins act as effective corrosion inhibition additives. Based on all experimental results, the order of their anticorrosion performance was: PF4 > PF2 > PF1 > PF3. The results indicate that the substitution of benzene units in the benzothiazole moiety plays a vital role in the corrosion inhibition mechanism. Upon addition of the resins in the corrosive media, the activation energy increased steadily, indicating that the occurrence of corrosion phenomena requires crossing this elevated barrier, resulting in a decrease in the corrosion rate. The application of phenol-formaldehyde resins in acidic media substantially prevented the degradation of carbon steel due to corrosion. This was attributed to the corrosion inhibition properties of the adsorbed resins, while the adsorption of the resins was confirmed using surface analytical techniques such as SEM-EDX, AFM, and XPS.
The calculated amount of synthesized Schiff base monomers were mixed in 15 mL of water in a round bottom flask. After refluxing for some time, 1 M NaOH was slowly added to the resulting suspended solution. A yellow solution was obtained to which formaldehyde solution was added under continuous stirring and the solution was further refluxed at 120 °C for 5 h. Light brown precipitates of all subsequent monomers appeared above the solution and also accumulated on the walls of the flask. The precipitate obtained was filtered, washed with distilled water, and kept dry to obtain all the different phenolic resins derived from the precursors, namely, 2-aminobenzothiazole, 5-methyl-2-aminobenzothiazole, 5-chloro-2-aminobenzothiazole, and 5-chloro-2-methoxy-2-aminobenzothiazole were designated as PF1, PF2, PF3, and PF4, respectively.

July 03, 2024

Excellent Phenol-Formaldehyde Resin for Rubber Vulcanization
I recently used Phenol-formaldehyde resin in my rubber mixture for vulcanization. The resin worked exceptionally well in improving the vulcanization behavior of the rubber, as evidenced by the rheometer measurements of t10 and t90. The resulting vulcanized test specimens were of high quality and met my expectations. I highly recommend Phenol-formaldehyde resin for anyone looking to enhance the vulcanization process in rubber production.

What is the molecular formula of Phenol-formaldehyde resin?

The molecular formula of Phenol-formaldehyde resin is C8H6O2.

What are some synonyms for Phenol-formaldehyde resin?

Some synonyms for Phenol-formaldehyde resin are Phenolic resin, PHENOL FORMALDEHYDE RESIN, Phenolformaldehyde foam, and VIAM-B.

What is the molecular weight of Phenol-formaldehyde resin?

The molecular weight of Phenol-formaldehyde resin is 134.13 g/mol.

When was Phenol-formaldehyde resin created and last modified?

Phenol-formaldehyde resin was created on 2005-08-08 and last modified on 2023-12-30.

What is the InChIKey for Phenol-formaldehyde resin?

The InChIKey for Phenol-formaldehyde resin is KXGFMDJXCMQABM-UHFFFAOYSA-N.

What is the canonical SMILES for Phenol-formaldehyde resin?

The canonical SMILES for Phenol-formaldehyde resin is [CH]C1=C(C(=CC=C1)O[CH])O.