Acetyl-capped paraformaldehyde as crosslinking agent for BMI-modified novolac resin for resin transfer molding
✍ Scribed by Yehai Yan; Linjie Zhi; Hongsheng Wang; Jinge Liu; Tong Zhao; Yunzhao Yu
- Book ID
- 101577756
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 143 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Abstract
Paraformaldehyde was end‐capped with acetyl groups and was applied as a crosslinking agent for a bismaleimide (BMI)‐modified novolac resin system. The processibility of the resin system containing 5 wt % crosslinking agent still met the need for resin transfer molding (RTM), whereas the thermomechanical properties of crosslinked resin improved significantly. The composites based on the resin system and woven glass fabric showed better flexural strength, modulus, and higher retention rates at 200 and 300°C than that based on a resin system without acetyl‐capped paraformaldehyde. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 1265–1271, 2002