Unverified90% confidenceFactTime unknown

PP浮水绳材质不吸水、自身浮于水面，有利于被救者在水中发现和抓取绳索

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90%

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Unverified救援绳必须选用聚丙烯（PP）等漂浮材质，湿水后仍能浮于水面便于落水者抓取；尼龙绳吸水后下沉，绝对不能用于水域抛投救援87% similar Unverified聚丙烯材质具有正浮力，绳索在水面漂浮便于落水者抓取，这是白水救援绳的基本要求82% similar UnverifiedPP聚丙烯材质密度低于水，绳体自身可漂浮于水面，无需额外浮力辅助即可保持可见性，这是区别于尼龙/涤纶救生绳的核心特征77% similar Unverified聚丙烯密度小于水，是常见绳材中少数能漂浮在水面上的材质，适合需要绳索保持可见和易回收的水上场景75% similar

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