The use and characteristics of high temperature resistant foam

The use and characteristics of high temperature resistant foam

Summary:High temperature resistant foam has very good cushioning per...
High temperature resistant foam has very good cushioning performance, and its main function is to protect against shock, drop and pressure as packaging. The heavier the weight, the greater the density, and the harder the hardness. Mainly used for building wall, roof insulation, composite board insulation, cold storage, air conditioning, vehicle, ship insulation, floor heating, decoration carving and other applications are very wide.

If the high temperature resistant foam board is used in the external wall thermal insulation system, its apparent density must meet the requirements of the JG149-2003 "Expanded Polystyrene Board Thin Plaster External Wall External Wall Thermal Insulation System" standard, that is, the apparent density is 18 ~22kg/m3. Maintain the main layout of the building to extend the life of the building. Because the external insulation is to place the insulation layer on the outside of the structure, the stress caused by the deformation of the structure caused by the temperature change is reduced, and the corrosion of the structure by harmful substances in the air and ultraviolet rays is reduced.

The high temperature resistant foam is conducive to the stability of room temperature, and the external insulation of the external wall is used, because the wall heat storage capacity is larger, and the layout layer is on the inside of the wall, which is conducive to the stability of the room temperature. Polystyrene materials are widely used in construction and packaging industries for their advantages of light weight, shock resistance, drop resistance, heat insulation, sound absorption, heat preservation, self-extinguishing, environmental protection and anti-aging, low cost, and easy construction; When heated to above 90°C, the beads soften, and the vaporization of the foaming agent can expand the EPS beads by 40-80 times.

According to its flexibility, it can be divided into soft, rigid and semi-rigid foams in between. Rigid foam plastics can be used as thermal insulation materials and sound insulation materials, insulation materials such as pipes and containers, floating materials and shock-absorbing packaging materials, etc.; flexible foam plastics are mainly used as cushion materials, foam artificial leather, etc. Commonly used foam plastics are polyurethane, polystyrene, polyvinyl chloride, polyethylene, phenolic foam and so on.

Plastic with many tiny pores inside. It is prepared by mechanical method (air or carbon dioxide is introduced to foam while mechanical stirring) or chemical method (adding foaming agent). There are two types of closed cell type and open cell type. The pores in the closed-cell type are isolated from each other and have buoyancy; the pores in the open-cell type are connected to each other and have no buoyancy. Available in polystyrene, polyvinyl chloride, polyurethane and other resins. High temperature resistant foam can be used as thermal insulation and sound insulation material and has a wide range of uses.