第1个回答 2022-06-24
因为白板笔的墨水里刻意添加降低附着力的剥离剂，当墨水被写在表面之后，随着溶剂的挥发，剥离剂可以在有色笔迹和书写表面起到隔离的作用，阻止笔迹和表面的紧密结合，所以可以在水中漂浮起来或者我们用纸巾也很容易就将其擦除了。
第2个回答 2022-06-16
因为白板笔的染料是不溶于水的，所以能飘起来，密度比水小。
第3个回答 2021-04-17
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