Study on Polymer Matrix Composites Used as Greenhouse Coverings: Optical Properties
The greenhouse is widely used in agriculture, and its covering material is one of the most important factors that affect its performance. In summer, the inner temperature of the greenhouse is usually too high for people to cultivate plants. In this work, a polymer matrix composite (PMC) was developed to reduce the inner temperature of the greenhouse without affecting the photosynthesis for the growth of plants. The PMC developed in this study was made of LDPE with suitable additives such as pigments, metal oxide etc. The morphology of the covering layer made of the PMC was observed with the atomic force microscopy (AFM). The transmittance of visible light and NIR through the cladding layer was measured with an optical fiber detector and used as the primarily performance index. Finally a simulated greenhouse was used to verify the cooling effect of the cladding layer. Experimental results showed that the PMC developed in this study gave more temperature reduction than that of the commercial PE covering.
C. Ay et al., "Study on Polymer Matrix Composites Used as Greenhouse Coverings: Optical Properties", Applied Mechanics and Materials, Vol. 863, pp. 15-19, 2017