Viscosity change of melamine urea formaldehyde glue line was investigated with a thermo mechanical analyzer (TMA) used as a parallel plates rheometer.

用热机械分析（TMA）方法研究了三聚氰胺-尿素-甲醛树脂固化初期胶层粘度的变化。

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The fibrous layers of the sheet material structure are made of urea formaldehyde glue and natural fiber things of natural fiber waste wood dust, bagasse, chaff, rice straws, reed straws, etc.

前述的板材结构，其中纤维层是以废弃的木屑、蔗渣、谷壳、稻草、芦苇草等天然纤维物混以甲醛尿素胶制成。

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Melamine, urea and formaldehyde underwent hydroxymethylation and etherification to yield a composed resin glue of methyl-etherified hexahydroxy methylmelamine and methyl-etherified hydroxymethylurea.

三聚氰胺、尿素与甲醛经羟甲基化、醚化反应，生成甲醚化六羟甲基三聚氰胺和甲醚化羟甲基脲复合树脂胶。

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