Properties of modified anhydride hardener and its cured resin

✍ Scribed by Chen Qiang; Gao Bingjun; Chen Jinglin; Xu Tongzhao

• Book ID: 104112115
• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 141 KB
• Volume: 40
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(00)00059-x

✦ Synopsis

Methyl-nadic-tetrahydric-methylanhydride (MNA), nadic-tetrahydric-methylanhydride (NA), anhydride hardener was modi®ed by solid diol molecule to improve the impregnation resin fracture toughness in cryogenic temperature. The lap-shear strength, transverse tension as well as the thermal shock test showed that the resin cured by the modi®ed anhydride hardener had higher bond strength and more toughness at 77 K. After the experiment of vacuum pressure impregnation (VPI) processing, it was found that this resin had a longer usable life, better impregnating properties, but higher initial viscosity than the resin hybrid HY925 as hardener.