At present, the shells of many medical devices are made of Fiberglass, such as medical beds, treatment beds, debridement pools, MRI, CT and other inspection equipment. Why? That’s because of the characteristics of fiberglass itself. Its corrosion resistance, strong penetration, no magnetization, and insulation are just the most suitable materials for medical equipment shells. So what should you pay attention to when customizing fiberglass medical shells? The following is a detailed explanation by Yari fiberglass editor.
1. Safety factor. The safety factor is the ratio of ultimate strength to allowable stress. Since FRP lacks standard strength values and its actual measured values are highly dispersed, careful analysis and appropriate measures are required when determining the safety factor.
The following factors are mainly considered:
① Responsible analysis and pressure analysis. When the stress state is accurately calculated, a lower safety factor can be used.
② Fiberglass products made by different process methods should use different safety factors.
③ When the temperature is high, the resin heat deformation temperature with a reasonable safety factor should be selected.
④ If there is impact load or fatigue load, the safety factor should be appropriately increased.
⑤ For the post-curing process, a lower safety factor can be selected.
⑥ If personal injury or critical equipment may be caused, the safety factor should be appropriately increased. Generally speaking, the total safety factor cannot be less than 6, but the safety factor should not be too high to avoid wasting materials.
2. Resin type. According to the type of medium and temperature requirements, the resin type should be reasonably selected. When there is no reliable data, simulation experiments should be used to ensure that the selected resin still has the required corrosion resistance and strength at the use temperature.
3. Structural design, the structural design of the equipment meets the requirements of easy use and installation. If some equipment requires easy cleaning inside and outside, special consideration should be given to the inlet and outlet, interface, nozzle and support. In addition, the elastic modulus of fiberglass is low, and its stiffness requirements should be met through reasonable structural design.
