The hottest plastic doors and windows have promine

Plastic doors and windows have prominent advantages in the field of energy-saving buildings

the heat transfer coefficient K of plastic doors and windows double glass windows can be less than 3, which can meet the requirements of most energy-saving buildings in hot summer and cold winter areas, hot summer and warm winter areas and severe cold areas. In terms of heat transfer, plastic door and window materials are poor conductors of heat, and their thermal conductivity is only 1/360 of steel and 1/250 of aluminum, with good thermal insulation performance. At the same time, the profiled materials for plastic doors and windows are of multi chamber structure (some areas have developed to five chamber or even six chamber structure). It consists of a closed air insulation layer composed of multiple independent spaces, which makes full use of the heat insulation performance of air to further reduce the overall heat conductivity of its materials

experiments show that the heat transfer coefficient K of plastic door and window single glass window can be less than 5, which can meet the requirements of most energy-saving buildings in hot summer and warm winter areas. The heat transfer coefficient K of double glass windows with plastic doors and windows can reach below 3, which can meet the requirements of most energy-saving buildings in hot summer and cold winter areas, hot summer and warm winter areas and severe cold areas. The K value of ordinary aluminum alloy windows, even Low-E insulating glass, can only reach 3.5~3.0. It can be seen that in order to meet the same K value requirements, plastic doors and windows can choose more economical supporting glass in addition to strictly controlling the temperature, so as to reduce the engineering cost of doors and windows

in terms of air tightness, plastic door and window frames or sashes are welded by melting. The window frames and sashes are an integral whole, and there is no gap between horizontal and vertical materials, eliminating the possibility of air passing through the corner of the splicing of horizontal and vertical materials

plastic doors and windows have high processing size and precision, and the frame and leaf overlap design is exquisite. During assembly, all gaps are equipped with sealant strips or sealing wool strips. The glass is embedded in the groove formed by the combination of the batten and the window sash, and both sides are sealed with elastic rubber. The sliding window sash is buckled on the sliding window frame track, and the sash and frame are sealed by wool strips. The sliding fans are also sealed by two wool strips. The casement window frame and sash are sealed by adhesive strips, and the sash and sash, sash and mullion in the frame are sealed by adhesive strips on both indoor and outdoor sides

in addition, when installing plastic doors and windows, flexible support is required between the wall and the window frame, which is sealed with Styrofoam. At the same time, there are air pressure balancing holes and drainage holes in the corresponding parts of the window frame and window sash to further improve the air tightness of the finished window

experiments show that as long as the plastic doors and windows are manufactured and installed in strict accordance with the specifications, the air tightness of the sliding window can reach 1.5, and the air tightness of the casement window can reach 0.6. Even the sliding window with ordinary performance can meet the requirements of the design standard for energy efficiency of residential buildings in hot summer and warm winter areas and the design standard for energy efficiency of residential buildings in hot summer and cold winter areas

the requirement of high energy density promotes the development of high nickel ternary materials. In terms of shading, solar radiant heat has a great impact on building energy consumption. Solar radiant heat increases the cooling load in summer and reduces the heating load in winter. Therefore, in different regions and seasons, energy-saving buildings have different shading requirements for doors and windows and their surrounding shading products

there are many kinds of plastic doors and windows, and the supporting materials that make up their windows can be flexibly selected. According to different needs, different glasses and various shading products can be matched to meet the requirements of energy-saving buildings for shading coefficient

at present, there are many kinds of sunshade products at home and abroad, including external sunshade sunshade, internal curtain sunshade, hollow glass built-in 100 page sunshade, etc. Plastic doors and windows can be perfectly matched with the built-in sun shading insulating glass, with coordinated color. Equipped with plastic doors and windows with built-in sun shading insulating glass, it can be adjusted to achieve the effect of indoor natural lighting or complete sun shading. After testing, the shading coefficient SC of the product can be effectively adjusted within a certain range, which fully meets the requirements of the aforementioned energy-saving design standards

in addition, in terms of raw material production energy consumption, the energy consumption per unit weight of PVC is 1/5 of that of steel and 1/8 of that of aluminum. In terms of recycling and reuse, the recycling energy consumption of plastic profiles is also far lower than that of metal materials such as aluminum alloy: after crushing the old materials, plastic profiles can be mixed with new materials and re extruded into auxiliary materials, or pipes and other extruded products; After aluminum alloy and other metal products are recycled, they must undergo high-temperature melting, and then carry out multiple processes such as composition adjustment and ingot processing to make products

with the improvement of people's living standards and the progress of science and technology, the advantages of plastic doors and windows in the field of energy-saving buildings are increasingly apparent. If 2billion square meters of new houses are built every year, roughly calculated according to the area of doors and windows accounting for 1/7 of the construction area, the national export share to emerging countries will also be greatly increased every year, with about 300million square meters of new doors and windows. Therefore, as long as we persist in advocating the production of high-quality products and win by quality, the plastic door and window industry will surely achieve great success