Mechanical performance and test method for paper wet-pad

Fan-pad cooling is one of the most popular and economic cooling method in greenhouse. Wet-pad is the most important component of the fan-pad cooling equipment. Wet-pad made of paper is the industrialized product and widely used. The quality of wet-pad affects the using results. Besides thermal and ventilating resistance performances, the mechanical performances are needed to evaluate the wet-pad quality. By now there is no evaluating method for the mechanical performances of wet-pad. In this paper, based on mechanical performances tests of wet-pad, two new concepts which were tensile strength and peeling strength of wet-pad were put forward and used as the parameters to describe mechanical performances. Also the test principles and methods were discussed. Besides, the methods were verified through the wet-pad tests in two conditions which were dry and wet. The results show that the test equipment are common used and test data have good repeatability. The method can be used to evaluate the mechanical performances of wet-pad.