This invention relates to a process of making a fiber-reinforced composite. Glass fibers may be provided. These glass fibers may be treated with a sizing composition that has a coupling-activator compound with the formula: S—X-(A)n, where S represents a silicon-containing coupling moiety capable of bonding to the surface of glass fibers, X represents a linking moiety, and (A)n, represents one or more polymerization activator moieties. The treated glass fibers may be combined with a resin to make a fiber-resin mixture. The resin may have a monomer, a catalyst, and an activator compound capable of initiating a polymerization of the monomer. The monomer may be a lactam or lactone having 3-12 carbon atoms in the main ring. The fiber-resin mixture may then be cured so that the monomer polymerizes to form a thermoplastic polymer matrix of the fiber-reinforced composite. The thermoplastic polymer matrix may be formed by in situ polymerization initiated from both the surface of the glass fibers and the resin. The fiber-reinforced composite formed may be at least 70 wt. % glass fiber.
本发明涉及一种纤维增强复合材料的制造工艺。可提供
玻璃纤维。这些
玻璃纤维可用上浆组合物处理,该组合物具有式为S-X-(A)n,其中 S 代表能与
玻璃纤维表面结合的含
硅偶联基团,X 代表连接基团,(A)n 代表一个或多个聚合活化剂基团。处理过的
玻璃纤维可与
树脂结合,制成纤维-
树脂混合物。
树脂中可能含有单体、催化剂和能够引发单体聚合的活化剂化合物。单体可以是主环上有 3-12 个碳原子的内酰胺或内酯。纤维-
树脂混合物随后可以固化,使单体聚合形成纤维增强复合材料的热塑性聚合物基体。热塑性聚合物基体可通过
玻璃纤维和
树脂表面的原位聚合形成。所形成的纤维增强复合材料可以至少含有 70% 的
玻璃纤维。