Development of fiber polymer mortar/polystyrene composite roof insulation board Xu Hongsheng, Cao Yang, Zhou Min, Zhang Shouguo, Li Guozhong (School of Materials Science and Engineering, University of Jinan, 250022) Manufacturing process, mechanized production process and board performance of composite roof insulation board And characteristics, analysis of the technical and economic indicators of the insulation board. Scanning electron microscopy, energy spectrum analysis and pore analysis were used to reveal the mechanism of polypropylene fiber and polymer emulsion to improve the impermeability of the surface layer of thermal insulation board. 0 Foreword Roofing is one of the important parts of buildings. The heat transfer consumes a large amount of heat, and the energy consumption loss accounts for about 10% of the total energy consumption loss of the building's peripheral structure. It is a key part of building energy conservation. At the same time, the quality of the roof structure directly affects the waterproof, thermal insulation and heat insulation functions of the top layer of the building. The ideal roofing material will play a significant role in improving the performance and comfort of the building. At present, the commonly used roofing materials are (1) PVC waterproofing membrane; (2) APP modified asphalt waterproofing membrane; (3) waterproof and thermal insulation powder; (4) perlite roofing thermal insulation block; (5) slag brick; (6) ) Polyurethane foam roofing materials, etc. Some of these products have a good effect on the waterproofing of the building roof, but they do not have the thermal insulation function, and some have the heat preservation function but are not waterproof. Polyurethane foam roofing materials have excellent thermal insulation and waterproofing properties, but their high performance and aging performance issues also affect the scope of their applications. Therefore, how to make waterproof and thermal insulation materials with good waterproof performance, good thermal insulation effect, low price, convenient construction and installation, suitable for the current roof, adapt to the urgent need for improving the quality of houses and improving the comfort of living, and adapt to the national wall materials. Innovation and the need for building energy efficiency have become important research topics. Polypropylene fiber polymer mortar is used as the surface layer material, and the composite roof insulation board made of polystyrene foam is made of thermal insulation material, which has good thermal insulation effect, good waterproof and impermeability, low cost and easy installation and construction. Broad application prospects. 1 Raw material cement strength grade is 42.5R type sulphoaluminate cement. Fiber polypropylene fiber, its performance indicators are shown in Table 1. Insulation material flame retardant self-extinguishing polystyrene foam, its 2 surface material mix ratio design Table 1 polypropylene fiber performance index serial number project name technical index melting point / ° C ignition point / ° c thermal conductivity / (W / mK) volume resistivity / 0cm acid and alkali resistance tensile strength / MPa Young's modulus / MPa elongation at break /% by orthogonal. Before the molding, a plurality of through holes having a diameter of 10-15 mm are formed around the polystyrene board, so that during the forming vibration of the roof panel, the mortar can flow into the through holes, so that the mortars of the two layers are connected by the cement mortar column. As shown in (b), after the cement is hardened, the protective layer on the board, the polystyrene board, and the lower surface cement mortar frame form a solid whole. On the composite roof insulation board, the periphery of the protective layer is made into a bevel angle (15°-0°). As shown in (C), the joint between the roof panel and the roof panel forms a trapezoidal groove with a large upper opening to facilitate waterproofing. The mortar or sealant is densely packed. 圄1 polypropylene fiber polymer mortar roof insulation board structure form 1 cement 1 1 river sand 1y 丨 meter 11 measurement 1 mold preparation budget cost / (yuan / m2) cement gangue insulation block (thickness 120mm) 0.7833.1 cement pearl Rock insulation board (thickness 120mm) 0.8229.8 polyurethane spray (thickness 40mm) 0.5560.0 composite polystyrene insulation board 0.55125.9 polypropylene fiber polymer mortar insulation board 0.55623.2 can be seen from Table 5, When no polymer and polypropylene fibers are added, the porosity of the reference mortar is 28.9204%, and the porosity of the mortar with polypropylene fibers and polymer is 9.5525%. This change can be further improved from the pore distribution (圄5). Intuitively, 圄5 lists the pore variation of the base mortar and polypropylene fiber polymer mortar. From 圄5, it can be seen that when the polymer and polypropylene fiber are added together, the diameter of the mortar is The porosity of 10-100nm is greatly reduced, which reduces the overall porosity to 9.5525%, which is 1/3 of the porosity of the reference mortar, which is 66.7%. This shows that the addition of polymer and polypropylene fiber makes the matrix micro. The pore system has been greatly improved. Macroscopically, the impermeability of the mortar is significantly improved. (2) The addition of polypropylene fiber and polymer improves the internal structure of the cement mortar, and greatly improves the impermeability of the mortar. Bookmark6(3)The roof insulation board made of polypropylene fiber, polymer, polystyrene foam and sulphoaluminate cement has good thermal insulation effect, excellent impermeability, simple production process, low cost and convenient construction and installation. Adapt to the needs of national wall materials innovation and building energy conservation. (Finish) Barbecue wire Grill Grate is made of high quality 304 stainless steel, never rusting and durable. BBQ Wire mesh does not have any coating or chemical ingredients, making food safer. BBQ Grate,BBQ Mesh,BBQ Grill, grill grate,grill mesh Shenzhen Lanejoy Technology Co.,LTD , https://www.szstainlesssteelwiremesh.com
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