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High-Speed Rail Rain Defense: Silicone Resin Coating Solves 300km/h Rain Erosion

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Maintenance reports on the Beijing-Shanghai high-speed line reveal raindrop impacts at 300 km/h exert force equivalent to 1/10th of a bullet. CRRC's solution is a new fluorosilicone resin composite coating. Its Si-O bonds effectively disperse impact stress, working with a polysilazane primer to create a "rigid-flexible dual shield." Testing shows 76% reduction in rain erosion damage, saving ¥12 million ($1.65M USD) per train set in lifecycle maintenance. International patents are pending for this technology.
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