2018年12月29日星期六


The superior properties of magnesium sandwich panel



Fire prevention excellence

Magnesium color steel plate insulated sandwich panel has good fire-proof performance, it is a non-flammable material and the flame duration is zero. Magnesium sandwich panel is non-flammable at 800 degrees Celsius~1200 degrees, which reaching the highest level of fire-proof non-flammable A1 grade. If with high-quality keel production of the partition system, the fire resistance limit of magnesium sandwich panel can be more than 3 hours. During the process of fire combustion, it can absorb a lot of heat and delay the rise of ambient temperature.


Waterproof and moisture proof

In dry-cold and wet weather, the performance of magnesium fire-proof insulated sandwich panel is always stable, not affected by condensate droplets and moist air. Even if it is soaked in water for several days, it will be air-dried naturally, not deform and soften, and can be used normally again, moisture absorption and halogen return phenomenon never occur. The sandwich panel board body has no water permeability after test.


Light weight and seismic resistance

The apparent density of magnesium board is 0.8-1.2g/cm3, which reduces the building load, reduces the weight of the building interior wall by more than 60%, and increases the use area by 5-8%. Light weight is conducive to the seismic resistance of the structure, and effectively reduces the cost of the foundation and the main body of the structure.

Superior strength

Although light in weight, magnesium fireproof sandwich panel board has compact structure, good stability, no deformation, wood-like toughness, excellent impact resistance, compression resistance, tensile and fracture properties, with both rigidity and toughness. Its flexural strength reaches 322 kgf/cm2 (vertical) and 216 kgf/cm2 (horizontal), and its impact strength can reach 25 Mpa.


Environmental health

Magnesium color steel sandwich panel does not contain asbestos, formaldehyde, benign and harmful radioactive elements, smokeless in case of fire, non-toxic, odorless. The material produced is natural mineral powder and plant fibers, the production process is natural maintenance with less energy consumption, no sewage, energy saving and environmental protection. When using this kind of sandwich panel, the surface does not contain flour. Its unique natural fine-hole structure can adjust the indoor temperature and make the room and office more comfortable.

Heat insulation and energy saving

Magnesium insulated sandwich panel has the characteristics of uniform fine holes, compactness and inorganic substances. Its thermal conductivity is 0.216w/cm.k, which is more heat-insulating than 1.1w/cm.k of lime-sand brick and stone. It saves energy consumption and keeps the room comfortable and clear air.


2018年12月5日星期三

Quality standard for sandwich panels



What is the quality standard of sandwich panels?

A. appearance quality requirements

1. board: flat surface, uniform color, no obvious bump, warpage, deformation.

2. surface: clean surface, no glue marks and oil stain.

3. defects: apart from crimping and cutting edges, there are no obvious scratches, bumps, scars, etc.

4. incision: straight cut, no sharp edges on the edge of the plate, degumming and wavy, and the panels should be bent inside.

5. core material: the core plate should be neat, no big pieces spalling, and there is no obvious gap between the block and the block.

B. Size tolerance of sandwich panels

1. length: tolerance deviation ±3~5mm

2. width: tolerance deviation±2mm

3. thickness: tolerance deviation ±2mm

4. diagonal deviation: allowable deviation 6

To see more sandwich panel types, please kindly click here.


2018年11月27日星期二

What matters needing attention in the application of EPS color steel sandwich panel



What matters needing attention in the application of EPS color steel sandwich panel

EPS wall panel and roof panel


1. Quality problems

In terms of quality problems, EPS color steel sheet sandwich panel are most likely to have problems in bond strength, surface density, peeling performance, size deviation, etc. The poor bond strength results in that the sandwich panel cannot bear enough external force, which is easily damaged and torn. In the actual installation process, the sandwich panel cannot bear enough mechanical force and the difference of surface density will lead to conductivity. The sandwich panels have insufficient flexural properties and cannot withstand pressure. For example, when they are used in roof sandwich panels and are accidentally weighted, they are liable to cause indoor personal injury. The enclosure structures used in light composite houses cannot withstand greater thrust. In fact, as long as the manufacturers organize the original materials production according to JC689, 1998 (Metal Surface Polystyrene Sandwich Panels) standard, surface density indicator 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. The economic interests of consumers will be seriously harmed. Size deviation will reduce specifications, increase usage, increase construction costs. The deviation of length, width and thickness of the standard is regulated. Many Enterprises The standard is not understood, and the product specifications and models reported are quite different from the actual production. For example, the standard width series is 1150 mm, 1200 mm, and the allowable deviation is (+2 mm), while some manufacturers submit 1150 mm specifications to 1200 mm. In addition, some manufacturers are prone to unqualified size deviation due to inadequate cutting accuracy of equipment.
EPS wall panel


2. Construction problems

Attention should be paid to whether the connection between the steel framework and the EPS color steel sandwich panel is firm enough, whether the connection is covered with fire-proof paint or not. Attention should be paid to the steel structure, whether the EPS color steel sandwich panel building is equipped with lightning rods and whether there is a good grounding point.

3. Scope of application

Because the spontaneous combustion and ignition temperature of EPS are 495 C and 370 C respectively, the EPS color steel sandwich panel cannot decorate the kitchen, cannot be used in high-power lamps and lanterns, cannot be close to the place where the power consumption is large and the frequency is high. EPS color steel sandwich panel cannot be used as temporary low, high-voltage distribution room building material.EPS color steel sandwich panel can be used as the envelope structure material of clean workshop.

As a new building energy-saving material, EPS color steel sandwich panel is widely used in the construction industry. How to use EPS color steel sandwich panel regularly under the condition of energy-saving and safety on the basis of learning fire lessons is still a big topic for fire fighters to study and explore in the future.