实验结果表明：改性后游离甲醛含量明显降低，韧性有了较大的提高。
The experimental result indicate: free formaldehyde reduced obviously, flexility of modified UF resin is enhanced clearly.
提出了一种脲醛树脂合成思路，并合成出游离甲醛含量高于0.3%的树脂。
The paper developed a new synthetic technology of urea-formaldehyde resins, and the content of free formaldehyde was more than 0.3%.
通过分析刨花板中游离甲醛产生的原因，提出了几种降低游离甲醛含量的方法。
Through analysis the causes of the free formaldehyde came from particle board, the article points out some methods to reduce the content of free formaldehyde.
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