Structure-properties relationship for resols with different formaldehyde/phenol molar ratio

被引：88

作者：

Manfredi, LB

de la Osa, O

Fernández, NG

Vázquez, A

机构：

[1] Univ Mar del Plata, Res Inst Mat Sci & Technol, INTEMA, RA-7600 Mar Del Plata, Argentina

[2] Cuban Inst Sugar Cane Derivat, ICIDCA, Havana, Cuba

[3] Univ Havana, Fac Chem, Havana, Cuba

来源：

POLYMER | 1999年 / 40卷 / 13期

关键词：

resol; dynamic-mechanical properties; phenolic resins;

D O I：

10.1016/S0032-3861(98)00615-6

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The relationship between the structure and the viscoelastic properties of resol resins was studied. Six phenolic resins (resol) were synthesized with different molar ratios of formaldehyde to phenol. These resols were cured by means of temperature and without catalyst. The characterization of the resol was done by means of infrared spectroscopy and chemical methods. From the viscoelastic properties of fully cured resins, characteristic properties such as: storage modulus (E'), tan delta, width of the tan delta(Delta T) and damping peak (tan delta) were obtained. The compression modulus and the void content were also determined. A maximum in the methylene bridge and the result of the viscoelastic properties allow us to say that the resol with F/Ph between 1.3 and 1.4 has the highest crosslinking density. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：3867 / 3875

页数：9

共 18 条

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