Modification of two-component bismaleimide resin by blending (meth)allyl compounds as third components

Abstract

A two‐component bismaleimide resin composed of 4,4′‐bismaleimidediphenyl methane (BDM) and o,o′‐diallyl bisphenol A (DBA) (Matrimid 5292 resin) was used as a parent bismaleimide resin. Modification of the parent bismaleimide resin was examined using several kinds of (meth)allyl compounds as the third component. The (meth)allyl compounds include triallyl isocyanurate (TAIC), o,o′‐dimethallyl bisphenol A (DMBA) and trimethallyl isocyanurate (TMAIC). In the ternary BDM/DBA/TAIC blends, the fracture toughness KIC and flexural strength for the cured resins decreased with increasing TAIC content; thermal properties of the cured resins were not deteriorated. In the ternary BDM/DBA/DMBA blends, KIC and flexural modulus for the cured resins increased and their glass transition temperatures decreased with an increase in DMBA content. Flexural strength increased up to DMBA 70 eq% blend and then decreased. In the ternary blend of BDM/DBA/TMAIC (1.0/0.5/0.5), KIC for the blend increased 15%, with retention of flexural property and Tg. In the ternary BDM/DMBA/TMAIC (1.0/0.5/0.5) blend, the cured resin had balanced properties and its KIC increased 50% compared to the cured Matrimid resin. © 1999 Society of Chemical Industry

Preparation and thermal properties of bismaleimide blends based on hydroxyphenyl maleimide

“…In order to obtain better processability and toughness, attention has been devoted to blends of bismaleimide with other reactive comonomers, such as vinyl and allyl compounds, allyl phenols and aromatic amines. However, these matrix resins usually require high curing temperatures and long curing times 3–6…”

Maleimide-Based Alder-Enes

“…(Meth)allyl compounds such as triallyl isocyanurate (TAIC), o,o 0 -dimethallyl bisphenol A (DMBA), and trimethallyl isocyanurate (TMAIC) were used to modify two component BMI resin system [75] as shown in Scheme 12. 16.…”

Bismaleimides and Biscitraconimides with Bisallyl Groups

“…Maleimides are known to react with allylphenols through an Alder-ene reaction (via an intermediate Wagner-Jauregg reaction) to give cyclic network structures [9][10][11][12][13][14][15][16][17]. The different possible cure reactions for BMI and CBI are shown in scheme 3.…”