Unverified90% confidenceDecision RuleTime unknown
遮阳天幕的实际防晒能力看涂层而非布料本身，认准银胶(涂银)涂层UPF50+且遮光率≥95%，仅标注UPF50+但为PU涂层的产品在正午阳光下地表温度仍会明显偏高
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90%
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Long-term
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Unverified顶布UPF≥50+且带涂银或PU涂层的遮阳棚才能有效阻隔紫外线并遮挡直射日光，普通无涂层200D牛津布仅遮光不遮热，正午使用棚下仍闷热88% similarUnverified遮阳棚布UPF≥50+才能有效阻挡紫外线，普通牛津布仅遮光不防晒，长时间照射下棚内地面温度仍会升高，需选带银胶或聚酯涂层的面料88% similarUnverified防晒等级看UPF值和涂层：UPF50+可阻隔95%以上紫外线，选带银胶涂层（内壁发亮银色）的款式，普通黑胶涂层防晒但夏天内部闷热，纯银胶适合暴晒草坪、黑胶更适合遮阴使用86% similarUnverified遮阳率优先看UPF值，UPF50+可阻挡98%紫外线；但高遮阳率银胶面料透气差，夏日午间围合后内部闷热，需搭配可开合通风口85% similarUnverified防晒伞看UPF值和涂层，UPF>50+且黑胶/钛银涂层才是真防晒，普通银胶或纯色涂层UPF常低于30，遮阳效果打折85% similar
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