Preprint Article Version 1 This version is not peer-reviewed

Preparation and Properties of 3-Pentadecyl-phenol In-Situ Modified Foamable Phenolic Resin

Version 1 : Received: 29 September 2018 / Approved: 30 September 2018 / Online: 30 September 2018 (05:34:50 CEST)

A peer-reviewed article of this Preprint also exists.

Ge, T.; Tang, K.; Yu, Y.; Tan, X. Preparation and Properties of the 3-pentadecyl-phenol In Situ Modified Foamable Phenolic Resin. Polymers 2018, 10, 1124. Ge, T.; Tang, K.; Yu, Y.; Tan, X. Preparation and Properties of the 3-pentadecyl-phenol In Situ Modified Foamable Phenolic Resin. Polymers 2018, 10, 1124.

Journal reference: Polymers 2018, 10, 1124
DOI: 10.3390/polym10101124

Abstract

In this present study, 3-pentadecyl-phenol was selected as a modifier to prepare a foamable phenolic resin with excellent performance, which was successfully prepared by in-situ modification. Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (1H NMR, 13C-NMR) were used to test and characterize the molecular structure of the modified resin. The results showed that 3-pentadecyl-phenol successfully modified the molecular structure of phenolic resin with a reduction in resin gel time. The effect of changing the added amount of 3-pentadecyl-phenol on the mechanical properties, microstructure and flame retardancy of the modified foam was investigated. The results showed that when the amount of added 3-pentadecyl-phenol was 15% of the total amount of phenol, this resulted in the best toughness of the modified foam, which could be increased to 300% compared to the bending deflection of the unmodified phenolic foam. The cell structure showed that the modified phenolic foam formed a more regular and dense network structure and the closed cell ratio was high. Furthermore, the compressive strength, bending strength, and limited oxygen index were improved, while the water absorption rate was lowered. However, the foam density could be kept below 40 mg/cm3, which does not affect the load.

Subject Areas

3-pentadecyl-phenol; foamable phenolic resin; in-situ modification; toughness

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