申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0441453A2
公开(公告)日:1991-08-14
A process is described for preparing thermoset composite articles under relatively mild conditions. The process includes exposing a laminate comprising a partially-cured thermosettable resin and a fibrous substrate to an elevated temperature which increases over time, the elevated temperature being below the glass transition temperature of the resin but sufficient to promote further curing and increase the glass transition temperature thereof to the ultimate glass transition temperature of the resin. The temperature of exposure is generally increased at a rate which maintains the temperature within 20°C below the glass transition temperature of the thermosettable resin, so that cure of the resin proceeds in the glassy state. The pressure during the process is generally maintained below 3.4 atmosphere and is preferably atmospheric pressure. The process enables the production of thermoset composite articles suitable for high-performance applications without lengthy autoclave treatments.
描述了一种在相对温和的条件下制备热固性复合材料制品的工艺。该工艺包括将由部分固化的热固性树脂和纤维基材组成的层压板暴露在随时间升高的温度下,升高的温度低于树脂的玻璃化转变温度,但足以促进进一步固化并将其玻璃化转变温度提高到树脂的最终玻璃化转变温度。曝晒温度的升高速度一般要保持在低于热沉树脂玻璃化温度 20°C 的范围内,以便树脂在玻璃态下固化。工艺过程中的压力一般保持在 3.4 个大气压以下,最好是大气压。该工艺可生产出适用于高性能应用的热固性复合材料,而无需进行长时间的高压灭菌处理。