Composite a-level flame retardant materials help old village wear "winter clothes"
The city's old district in all comprehensive renovation project has commenced, "winter clothes" will be completed at the end of November. The reporter understands from ZhuZong group four Olympic village renovation project, the energy-saving renovation of buildings exterior wall for the first time put on flame retardant materials "heat preservation", meet will shrink not only fire burning.
Reporter saw yesterday at the scene of the renovation, hundreds of meters long residential building is surrounded by green WeiDang. Building external thermal insulation for the first time using A so-called "composite grade A hard foam polyurethane flame retardant materials. Project secretary Dong Xiyu took out a piece of sample material fire test. The thickness of insulation board in the middle of the four centimeters, similar to a part of the foam density and the hardness is very high, insulation board on each side of the inside and outside with a layer of floor slab. Barbecue in the middle of the white part, with lighter last several seconds nor burning, leaving only the pale yellow barbecue.
To old, winter indoor only see 15 degrees Celsius, "stay in the house does not move, also really a little cold." WuJian community residents of ms zhang said. The reporter understands visiting community residents, due to the housing construction s earlier, houses the original heat preservation performance is poor. The finish exterior insulation energy-saving renovation process, equal to building wearing a "winter clothes", combined with the new change of window of model steel door, run out hot air in winter, resist the outside of the sun in summer, warm in winter and cool in summer. According to calculation, reconstruction after the completion of the indoor temperature can improve the 4 to 5 degrees Celsius.
