Abstract
In RTM process, the condition which the flow of resin in the pipeline according with the Darcy's law is the movement of laminar fluid and the Reynolds number less than 1. This paper simulated the flow of the resin in the pipeline by changing the length and diameter of the passageway of pipeline with finite element analytical method. In the result, the relationship of the fluid speed on the exit in pipeline and Reynolds number, also the scope of flow rate of the resin in the pipes can be gained. The test result shows that: exit velocity had little to do with the length, but the ratio of pipeline diameter. When the diameter of entrance assume value of 6 mm,10mm,16mm and 20mm and the diameter of exit 6 mm, 10mm and 16 mm respectively, the maximum speed should be 694.442 mm per second, 416.667 mm per second and 260.414 mm per second accordingly.
Highlights
RTM (Resin transfer molding) is a composite closed molding technology, which has the advantage of low-cost, high-quality production of composite material (Rudd, C.D., 2004, p1-8) applied to volume production of the small and medium-size components
The basic method is design and manufacture mold based on product needed, making preform of fiber reinforced materials based on the shape of product needed, and adding it into mold cavity
Through using low-viscosity resin and heating curing process, composite materials are created by the high-quality, low scrap rate, and its production process less depends on the operator's skill level
Summary
RTM (Resin transfer molding) is a composite closed molding technology, which has the advantage of low-cost, high-quality production of composite material (Rudd, C.D., 2004, p1-8) applied to volume production of the small and medium-size components. There are mainly design and manufacture of molding, production and laying of preform, injection, compaction and molding of resin, and it’s stripping and post-processing etc The basic method is design and manufacture mold based on product needed, making preform of fiber reinforced materials based on the shape of product needed, and adding it into mold cavity. After injecting liquid resin into the mold cavity and making preform fully impregnated and cured, and opens ultimate composite material components. 149-157) simulated the mold filling process, and used the computer software (POLYFLOW) to simulate resin flow. 1310-1338) studied the calculation process of the simplifying RTM resin flow. In RTM Process, in a resin preform mold cavity to streamline the flow of fluids in porous media. With the Darcy's law and the Reynolds number is less than 1, the general law of the resin flow in the pipeline can be obtained
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