Unverified85% confidenceFactTime unknown
充气垫R值与厚度不成正比，单层充气结构R值往往不足2，隔热靠内部反射膜或填充绒；看到厚6cm但无隔热层的充气垫别指望它保暖
1
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85%
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Long-term
Relevance
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Unverified充气垫内部若无隔热填充（仅空气柱结构）保暖性差，冷空气在气室内对流会带走体热，看似厚但R值可能仅1.5-2；带反射膜或纤维填充的充气垫R值可达4以上86% similarUnverified不要仅凭厚度判断保暖：无隔热填充的空气垫即使10cm厚，冷空气在内部对流反而比薄的带反射层/填充垫更冷，必须看R值而非厚度84% similarUnverifiedR值越高的充气垫内部隔热层越厚，往往越重且充气回数越多；追求极致轻量（<400g）的垫子通常R值不超过3，冬季保暖不足82% similarUnverified带内置隔热层（如反射膜或棉绒）的充气垫R值更稳定，纯空气腔体设计遇冷会因对流散热导致实际保暖不足81% similarUnverified厚度和R值不能划等号，部分厚充气垫R值反而低（内部为空气无隔热结构），选购冬季垫要看标注R值而非仅看厚度80% similar
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