Preparation and Estimation of Super Water-repellent Film Coated by Silica and Acrylic-silicon Containing Active Methylene Group

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  • 活性メチレン基を有するカルボキシ基含有アクリルシリコーン/シリカ複合微粒子による超撥水性膜の作製と架橋による耐久性付与
  • カッセイ メチレンキ オ ユウスル カルボキシキ ガンユウ アクリルシリコーン/シリカ フクゴウ ビリュウシ ニ ヨル チョウハツスイセイマク ノ サクセイ ト カケハシ ニ ヨル タイキュウセイ フヨ

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Abstract

<p>In acrylic silicone (M-CAS) solution containing active methylene group, silica micro particles were synthesized by addition of tetraethoxysilane. When this composite film coated on a glass substrate, the water contact angle showed 120°. Furthermore, the film which the hexamethyldisilazane as silane coupling agent was added to together, showed the contact angle of 155°. However, as a result of the wear test, the contact angle of the composite film reduced to 60°. When the crosslinking agent was added in reaction solution and was cured by UV irradiation, contact angle of the coating film showed 130°. Even through wear test, the UV-irradiation-curing composite film maintained its contact angle ca.100°. Repeated coating and UV irradiation-curing formed the super water-repellent film, and even through wear test it maintained excellent water-repellency, its contact angle being reduced only to 130°.</p>

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