The Preparation of resol Containing High Methylol Group and  Low Free Formaldehyde Content

doi:10.19491/j.issn.1001-9278.2013.01.007

China Plastics ›› 2013, Vol. 27 ›› Issue (01): 32-35.DOI: 10.19491/j.issn.1001-9278.2013.01.007

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The Preparation of resol Containing High Methylol Group and Low Free Formaldehyde Content

YANG Yin，WAND Rumin，YANG Guowu，WANG Dejun

Department of Applied Chemistry,School of Science, Northwestern Polytechnical University,Xi' an, 710129，China

Received:2012-08-02 Revised:2012-09-23 Online:2013-01-26 Published:2020-11-12

Abstract

Abstract: A-stage phenolic resin was synthesized with excessive formaldehyde and alkali catalyst in this paper. According to orthogonal test method, different experimental design was getted.The content of methylol group and free formaldehyde was investigated by hydroxylamine hydrochloride and iodometric methods,aiming at optimum technology,which is reaction temperature 80℃,reactant molar ratio 1.2,the molar ratio of catalyst and phenol 0.025,reaction time 90 min. The FTTR analysis further show that a large number of methylol group was existed in resol.

Key words: phenolic resin, high methylol group;low free formaldehyde, orthogonal experiment

CLC Number:

TQ323. 1

YANG Yin, WAND Rumin, YANG Guowu, WANG Dejun. The Preparation of resol Containing High Methylol Group and Low Free Formaldehyde Content[J]. China Plastics, 2013, 27(01): 32-35.

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The Preparation of resol Containing High Methylol Group and Low Free Formaldehyde Content

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