Unverified85% confidenceFactTime unknown
双层隔热玻璃杯利用中空层保温防烫，外壁不烫手但容量标称含双层空间，实际装水量比同尺寸单层杯少约20%
1
Sources
85%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified保温性能越好杯壁越厚重，真空双层保温杯比单层塑料杯重2-3倍；追求全天保温会牺牲携带便利性，纯提醒饮水用途可选轻量塑料/Tritan材质放弃保温83% similarUnverified中空玻璃（双层）不建议贴深色高吸热膜，热量积聚在两层玻璃夹层间易造成玻璃热炸裂（钢化玻璃相对安全）；中空玻璃优选反射型或浅色膜83% similarUnverified不建议在双层中空玻璃（钢化中空）上贴厚防爆膜，膜吸热会导致玻璃两面温差过大，可能诱发热炸裂80% similarUnverified保温层越厚越保温但杯壁越厚、外径越大、越重；同容量下真空双层杯比单层重且笨重，追求便携和保温需要在杯身尺寸上做取舍80% similarUnverified中空玻璃（双层）不建议贴深色吸热遮光膜，膜吸热导致内外玻璃温差过大，长期可能引起玻璃自爆或密封胶老化，中空玻璃优先选浅色反射膜或外置遮光帘80% similar
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