In Situ Barrier Layer Formation for Coinjection Resin Transfer Molding
In Situ Barrier Layer Formation for Coinjection Resin Transfer Molding
复制标题
共注射树脂传递成型的原位阻挡层形成
DOI：
10.1177/0892705704035409
复制
发表时间：
2004
影响因子：
3.3
通讯作者：
J. Gillespie
中科院分区：
文献类型：
--
作者：
Anuya Harkare;J. Gillespie
共注射树脂传递模塑（CIRTM）需要一个不可渗透的阻挡层，以防止注入模具的树脂发生不希望的混合。这项研究涉及在原位形成的这种阻隔层使用热塑性聚酯粉末粘合剂连接到织物在预成型阶段。将粉末粘合剂撒在玻璃织物上并通过使用热和压力熔化，以形成分离层。许多因素，如预成型温度，压力和时间，管理的个别粘合剂颗粒的蔓延成膜和随后的浸渍到织物进行了评估。研究和验证了颗粒在无孔基底上的横向扩散。一系列的模型被用来预测在给定的预成型条件下的粘合剂熔体到织物中的浸渍。确定了双轴向编织织物成膜的最佳预成型条件。共注射层压板使用原位阻挡层的制造和他们的性能被证明是可比较的传统的CIRTM层压板使用短梁剪切试验。
Coinjection resin transfer molding (CIRTM) requires an impermeable barrier layer to prevent undesired mixing of resins injected into the mold. This study involves in situ formation of this barrier layer using a thermoplastic polyester powder binder attached to a fabric during the preforming stage. The powder binder is sprinkled onto the glass fabric and melted by use of heat and pressure, to form the separation layer. A number of factors such as preforming temperature, pressure and time that govern the spread of individual binder particles into a film and the subsequent impregnation into the fabric are evaluated. Lateral spread of particles on nonporous substrate is studied and verified. A series of models are used to predict the impregnation of the binder melt into the fabric at the given preforming conditions. The optimized preforming conditions for impermeable film formation were determined for a biaxial weave fabric. Coinjected laminates using the in situ barrier layer were manufactured and their performance was shown to be comparable to conventional CIRTM laminates using the short beam shear test.