WaterProof

2013011460 Seo Jeong Do2013011471 Lee young Sang2013011473 Lee Eun Gwang

2014.5.19

1. What is Waterproof?

1) Definition of waterproof : impervious to or unaffected by water

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1. What is Waterproof?

2) Cause of waterproof is ; hydrophobic : property to repel water re-

sulting from non-polarity

※ Non-polarity occurs due to the Similar-ity in electronegativity or Structural sym-metry.

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2. Material able to waterproof

Full waterproof

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2. Material able to waterproof

Half waterproof

3. Where we use waterproof

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Q & A

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