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通过对树脂传递模塑成型工艺中广泛使用的纤维增强材料——玻纤连续毡渗透率的测量和分析，建立了该增强材料在模具中的纤维体积含量与渗透率之间的关系，考察了纤维增强材料的渗透率与注模时间的关系，分析对比了纤维增强材料的结构型式对注模时间和纤维浸透性的影响。结果表明；随着纤维体积含量的增大，渗透率迅速下降，对于玻纤连续毡，其渗透率ｋ与纤维体积含量ｖｆ的关系可以表示为一个多项式；在恒定的压力下，渗透率大，注模需要的时间越短，体积含量相同的玻纤连续毡和玻纤方格布比较，玻纤连续毡的渗透率约大一倍，而所需注模时间约为玻纤方格布的１／２；玻纤方格布中存在渗透率相差特别大的两大区域是造成其浸透性差的主要原因。
Through the measurement and analysis of the permeability of glass fiber continuous felt, a widely used fiber reinforced material in the resin transfer molding process, the relationship between the fiber volume content and the permeability of the reinforcing material in the mold was established. The relationship between the permeability of fiber-reinforced materials and injection molding time was analyzed, and the effect of the structure type of fiber-reinforced materials on injection molding time and fiber permeability was analyzed and compared. The results show that as the fiber volume content increases, the permeability rapidly decreases. For a glass fiber continuous mat, the relationship between the permeability k and the fiber volume content vf can be expressed as a polynomial; under a constant pressure, the permeability is large. The shorter the time required for injection molding, the glass fiber continuous felt with the same volume content and the fiberglass square cloth, the permeability of glass fiber continuous felt is about double, and the required injection molding time is about the fiberglass square cloth. 1/2; There are two major areas in the fiberglass square cloth with a large difference in permeability, which is the main reason for its poor permeability.