Unverified80% confidenceTradeoffTime unknown
涂层型防晒帽（银胶/涂层布）UPF值高但透气差、水洗后涂层易脱落失效；纤维型（高密度织造，如原纱型防晒）耐洗更持久，长期使用选纤维型
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
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Unverified涂层型防晒帽（表面涂银胶/化学涂层）洗涤或摩擦后防晒力会衰减，纤维本身UV阻隔的原纱型（如添加二氧化钛的锦纶）耐水洗更持久86% similarUnverified涂层型防晒袖套（表面有胶感涂层）多次机洗后涂层脱落防晒力衰减快，原生纤维编织型（靠纱线本身抗UV）耐洗性显著更好，长期用选后者86% similarUnverified紧密织物本身即有物理防晒能力，选购时优先看织物密度和UPF标识，而非'涂层防晒'——涂层洗涤后会衰减，纯物理紧密针织的防晒性能更持久83% similarUnverified银胶/黑丝涂层遮光布遮光率高但透气差、易在潮湿环境发霉且不耐水洗，三层编织（黑纱夹层）遮光布可机洗更适合长期使用82% similarUnverified遮光原理选涂层还是高密织造：涂层布（银胶/黑胶）遮光率高但透气差、久用可能开裂脱落；高密提花织物遮光约90%但更耐用透气、可水洗，长期使用优先高密织造81% similar
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