preforms

EFFECT OF POROUS PREFORMS ON POROSITY OF PREPARED TiC/ Ni_3Al COMPOSITES Data prefetch optimization in dynamic binary translation

多孔预制件对TiC/Ni3Al复合材料孔隙率的影响动态二进制翻译中数据预取优化研究

The melted thermoplastic adhesive after reaction in preforms will format more distribution of film groups on the fiber surface adhesion, and thus resin flow permeate better faster and easier than before reaction.

预型件内的热熔性粘合剂反应融化后会形成团片粘附在纤维束的表面，分布也更加离散化，从而树脂流动渗透比融化前的效果要好、浸润更快更容易。

C/ C composites with density as high as 1.74 g/ cm 3 were obtained within 3 hours by the new process. Carbon felt disk preforms have been densified in a liquid carbon source. The liquid precursors studied in the present work include CYH and KEE.

利用该技术，采用碳毡作预制体，以两种液态低分子有机物作碳源前驱体，沉积时间在3h内，沉积温度在900℃～1100℃范围内可获得密度达1.74g/cm3的C/C材料。