THERMOLYSIS OF ORTHONOVOLACS .1. PHENOL-FORMALDEHYDE AND M-CRESOL FORMALDEHYDE RESINS

被引：8

作者：

CHETAN, MS ^{[1
]}

GHADAGE, RS ^{[1
]}

RAJAN, CR ^{[1
]}

GUNJIKAR, VG ^{[1
]}

PONRATHNAM, S ^{[1
]}

机构：

[1] NATL CHEM LAB,DIV CHEM ENGN,POLYMER SCI & ENGN GRP,POONA 411008,MAHARASHTRA,INDIA

来源：

THERMOCHIMICA ACTA | 1993年 / 228卷

关键词：

D O I：

10.1016/0040-6031(93)80295-L

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A sequence of phenol-formaldehyde and m-cresol-formaldehyde orthonovolac resins were synthesized by varying the mole ratios of phenol or substituted phenol to formaldehyde. The resins were characterized by their thermal properties such as softening temperatures and degradation profile. The non-isothermal procedures of Coats-Redfern and Horowitz-Metzger were applied to their respective differential thermogravimetric plots to ascertain the thermal degradation kinetics of these resins in air. The thermal stability and activation energies (E) of m-cresol-formaldehyde resins in the terminal degradation stage were correlated with those of the phenol-formaldehyde resins. The effect of aromatic ring substitution on the thermal stability is also discussed.

引用

页码：261 / 270

页数：10

共 17 条

[1]

CHETAN MS, 1987, THESIS U POONA PUNE

[2] KINETIC PARAMETERS FROM THERMOGRAVIMETRIC DATA [J].

COATS, AW ;

REDFERN, JP .

NATURE, 1964, 201 (491) :68-&

[3]

COATS AW, 1903, ANALYST, V88, P906

[4]

COATS AW, 1965, POLYM LETT, V3, P917

[5]

CONLEY RT, 1965, J APPL POLYM SCI, V9, P2799

[6]

Freeman ES., 1959, J APPL POLYM SCI, V1, P192, DOI 10.1002/app.1959.070010210

[7]

Friedman H.L., 2007, J POLYM SCI C, V6, P195, DOI DOI 10.1002/POLC.5070060121

[8]

HOWORITZ HH, 1963, ANAL CHEM, V35, P1464

[9]

JEFFREYS KD, 1963, BR PLAST, V36, P188

[10] DYNAMIC THERMOGRAVIMETRIC ANALYSIS OF POLYSTYRENE - EFFECT OF MOLECULAR-WEIGHT ON THERMAL-DECOMPOSITION [J].

KOKTA, BV ;

VALADE, JL ;

MARTIN, WN .

JOURNAL OF APPLIED POLYMER SCIENCE, 1973, 17 (01) :1-19

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