Controling of reaction end point for urea-formadehyde resins

The urea-formadehyde resins as adhesives in woodworking have been extensively used in many applications.The controling of reaction end point for the resins determines the physical and mechanical properties of the products,and if any carelessness happens during its controling the quality of the resins will be unstable or the resins will be rejected.Effect of reaction end point controling on the quality of urea-formadehyde resins and several controling methods for end point were emphatically presented.