Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
In terms of quality, EPS color steel sandwich panels are most likely to have problems in terms of bonding strength, surface density, peeling performance, and dimensional deviation. The poor bonding strength makes the sandwich panel unable to bear enough external force, it is easy to be damaged, and it is easy to be torn. During the actual installation process, the sandwich panel cannot bear enough mechanical force; the poor surface density will lead to insufficient bending resistance of the sandwich panel and cannot bear the pressure. For example, if the sandwich panel used on the roof is accidentally added with heavy objects, it is easy to cause personal injury indoors. The enclosure structure used in light composite houses cannot withstand large thrusts and has poor stability. In fact, as long as the manufacturer organizes the production of raw materials according to the JC689.1998 {Metal Surface Polystyrene Sandwich Panel” standard, the surface density index is very easy to achieve.
If the peeling performance is poor, the service life of the cold storage with sandwich panel insulation will not meet the design requirements, and the economic interests of consumers will be seriously damaged. Dimensional deviation will make the specifications smaller, increase the amount of the user, and increase the construction cost. The standard has regulations on the deviation of length, width and thickness. Many enterprises do not understand the standard, and the product specifications and models reported are quite different from the actual production. For example, the width series stipulated in the standard are 1150mm and 1200mm, and the allowable deviation is ±2mm. , while some manufacturers report the specification of 1150mm as l200mm. In addition, some manufacturers are also prone to unqualified dimensional deviations due to insufficient equipment blanking accuracy and other reasons.
Pay attention to whether the connection between the steel structure skeleton and the EPS color steel sandwich panel is firm, and whether the connection is not covered with fireproof paint, leaving a fireproof weak point. Note the steel structure. Whether the EPS color steel sandwich panel building is equipped with a lightning rod and whether it has a good grounding point.
Since the self-ignition and ignition temperature of EPS are 495°C and 370°C respectively, EPS color steel sandwich panels cannot be used in kitchen decoration, high-power lamps, or places with high fire and electricity consumption and high frequency. EPS color steel sandwich panels cannot be used as construction materials for temporary low and high voltage power distribution rooms in the factory area. EPS color steel sandwich panels can be used as enclosure structure materials for clean workshops.
As a new building energy-saving material, EPS color steel sandwich panels are widely used in the construction industry. How to standardize the use of EPS color steel sandwich panels under the conditions of energy saving and safety on the basis of learning the lessons from fires is still a problem. It is a big topic that the majority of firefighters need to continue to study and explore in the future.
