Unverified82% confidenceDecision RuleTime unknown
耐油PVC绝缘适合发动机舱等有油污环境，但耐温性一般在80-105°C，若需贴近排气管等高温区域走线需额外加隔热套管保护
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82%
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Long-term
Relevance
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Unverified发动机舱内布线必须选耐温≥125℃的线束（如XLPE交联聚乙烯或硅胶绝缘），普通PVC绝缘线仅耐温70-80℃，靠近排气/涡轮部位会老化开裂短路81% similarUnverified汽车发动机舱、大功率LED驱动等高温位置不建议使用PVC热缩管，其80℃耐温上限会导致收缩变形和绝缘失效77% similarUnverified地热/地暖地板不要铺大面积密实PVC防滑垫，会阻隔热传导并使局部积热加速PVC老化释放异味，应选透气网格款或专用地热适配垫76% similarUnverified阻燃材质认准PC（聚碳酸酯）外壳，灼热丝阻燃温度需达750℃以上；ABS或PP材质阻燃性差，长期插拔大功率电器易老化变形75% similarUnverified外壳阻燃材质应选PC（聚碳酸酯）材质，灼热丝阻燃温度需达750℃及以上；避免选用ABS或普通PP材质外壳，其阻燃等级和耐高温性能不足，长期负载易变形碳化75% similar
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