Evaluation of Out-of-Autoclave (OOA) epoxy system

被引：5

作者：

Guilherme, Fernanda ^{[1
,2
]}

Cassu, Silvana Navarro ^{[1
,3
]}

Diniz, Milton Faria ^{[3
]}

de Faria Gonzales Leal, Tanila Penteado ^{[2
]}

Sanches, Natalia Beck ^{[4
]}

Lazzarini Dutra, Rita de Cassia ^{[1
]}

机构：

[1] ITA, Sao Jose Dos Campos, SP, Brazil

[2] Embraer SA, Sao Jose Dos Campos, SP, Brazil

[3] IAE, Div Quim AQI, Sao Jose Dos Campos, SP, Brazil

[4] Ctr Logist Aeronaut CELOG, Santana, SP, Brazil

来源：

POLIMEROS-CIENCIA E TECNOLOGIA | 2017年 / 27卷 / 04期

关键词：

DMA; DSC; epoxy system; FT-IR; OOA; SPECTROSCOPY; REFLECTANCE;

D O I：

10.1590/0104-1428.16016

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Epoxy resins (EP) usually cure in autoclave to minimize resin voids and to achieve the desired resin/fiber ratio. Cure parameters such as temperature, vacuum and pressure levels are controlled and monitored. Aiming time and cost optimization, new out-of-autoclave (OOA) cure processes have been developed lately. This study evaluated the cure cycle and the effect of non-programmed interruptions in an OOA process. Fourier Transform Infrared spectroscopy (FT-IR) results show similarities between the resin used and diglycidyl ether of bisphenol A (DGEBA) and also that the curing system is composed of cyan and sulfur hardeners, codified in industry, as Components of #2511 Resin System. The cure cycle and its interruptions were simulated by dynamic-mechanical analysis (DMA). The samples obtained were evaluated by FT-IR and differential scanning calorimetry (DSC), whose results show that the degree of cure varying between 0.8 to 0.85 was achieved at 120 degrees C.

引用

页码：353 / 361

页数：9

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