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Urea Formaldehyde Resin Resultant Plywood with Rapid Formaldehyde Release Modified by Tunnel-Structured Sepiolite

机译:隧道结构海泡石改性快速释放甲醛的脲醛树脂合成胶合板

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摘要

In order to reduce the cost of plywood and save edible resources (wheat flour), a cheap and resourceful clay, sepiolite, was used to modify urea formaldehyde (UF) resin. The performances of filler-filled UF resins were characterized by measuring the thermal behavior, cross section, and functional groups. Results showed that cured UF resin with SEP (sepiolite) formed a toughened fracture surface, and the wet shear strength of the resultant plywood was maximum improved by 31.4%. The tunnel structure of SEP was beneficial to the releasing of formaldehyde, as a result, the formaldehyde emission of the plywood bonded by UF resin with SEP declined by 43.7% compared to that without SEP. This study provided a new idea to reduce the formaldehyde emission, i.e., accelerating formaldehyde release before the product is put into use.
机译:为了降低胶合板的成本并节省可食用的资源(小麦粉),一种廉价而足智多谋的粘土,海泡石被用于改性脲醛(UF)树脂。通过测量热行为,横截面和官能团来表征填充填料的UF树脂的性能。结果表明,具有SEP(海泡石)的固化UF树脂形成了增韧的断裂表面,并且所得到的胶合板的湿剪切强度最大提高了31.4%。 SEP的隧道结构有利于甲醛的释放,因此,与没有SEP的UF树脂结合的胶合板的甲醛释放量下降了43.7%。这项研究提供了减少甲醛排放的新思路,即在产品投入使用之前加快甲醛释放。

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