E0-level environment-friendly modified urea formaldehyde resin for shaving board and preparation method thereof

The invention discloses E0-level environment-friendly modified urea formaldehyde resin for a shaving board. In addition, the invention also discloses a preparation method of the E0-level environment-friendly modified urea formaldehyde resin for the shaving board. The preparation method is characterized by adopting high-concentration formaldehyde and urea which are low in molar ratio as raw materials and modifying urea formaldehyde resin by adding polyvinyl alcohol, melamine and a reinforcing agent. Through accurate control of a synthesis technology, a vacuum dewatering technological process is omitted, and the prepared urea formaldehyde resin is low in formaldehyde content, good in pre-pressing property, high in internal binding strength and surface binding strength and low in cost. 本发明公开了种刨花板用E级环保型改性脲醛树脂。此外，本发明还公开了所述刨花板用E级环保型改性脲醛树脂的制备方法，所述方法采用低摩尔比的高浓度甲醛和尿素为主要原料，加入聚乙烯醇、三聚氰胺和增强剂对脲醛树脂进行改性，通过合成工艺的精准控制，省去了真空脱水工艺过程，使得制备的脲醛树脂不但甲醛含量低、预压性能好、内胶合强度与表面胶合强度高，而且成本低。