甲醛结构

As a matrix of wood composite, urea-formaldehyde resin has been used extensively, and the relationship between its structure and performance is also one focus for enterprises.───作为木质复合材料基体而被广泛使用的脲醛树脂，其结构与性能之间的关系，一直是企业界所关注的焦点。

influences of lignin-resin(treated with formaldehyde) on the structure and properties of PVC/NBR thermoplastic elastomers were studied.───对PVC/NBR热塑性弹性体结构与性能的影响。

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。