樹脂とは？
暑かったり寒かったり、 雹が降ったり、ゲリラ豪雨がたくさん来たり、 台風はそんなに来なかったり、 今年の夏はなかなかに目まぐるしい夏でしたね。 この「今年の夏は・・・」って毎年言ってる気がしませんか？ 夏の基準ってどこにあるんだろう・・・。 なんてことが気になる、どうもFiReP Rebar Japan株式会社の塚本理貴です。 今回は樹脂についてです。 前回のFRPに続いてできるだけ専門用語を避けて説明していきたいと思います。 樹脂って何？ 樹脂には天然樹脂と合成樹脂がありますが、ここでは合成樹脂を扱います。 二つの違いは、自然由来のものか、人工物かというところです。 皆さんの身近にあってわかりやすい樹脂製品といえば、プラスチック製品です。 ありとあらゆるところに使われ、人々の生活にとっては必要不可欠となっているプラスチック製品は、人工的に精製された樹脂（半ドロドロの液体）からできています。 （ちなみに、ゴムも樹脂製品です。天然ゴム、とか聞いたことありませんか？あれは天然樹脂からできているのです。安いものは大体が合成樹脂からできています。） 樹脂
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