热门关键词： 济南坚固彩钢工程公司 | 彩钢板 | 复合板 | 彩钢瓦 | c型钢 | 钢结构 |
As we all know, the strength of composite board products, especially the tensile strength, is very important to resist wind pressure. But for the application of composite board in the field of building insulation, there is a wrong thinking in the market. Taking the external wall insulation system as an example, the mechanical strength of high-density composite board products is bound to be better. To improve the mechanical strength, it is necessary to improve the density of composite board materials.
Therefore, in many local technical regulations or standards of our country, the density requirements of composite board used in external thermal insulation system are put forward, but too high density will lead to the increase of thermal conductivity, which will weaken the thermal insulation performance of Jinan composite board and bring inconvenience to construction and installation.
In fact, solutions to this problem have appeared in the European market, and have mature application experience, which can not only ensure higher mechanical strength and lower thermal conductivity, but also reduce the comprehensive density of composite board.
Composite board products have developed for decades in China. In recent years, due to the frequent fire in the construction and industrial fields, as a kind of class a insulation material with excellent fire performance, composite board is highly valued and respected by people from all walks of life. As we all know, thermal conductivity and density are very important test indexes in the thermal insulation material test project. Thermal conductivity is an index to measure the thermal performance of materials, while density index is a better index to measure whether the thermal insulation materials are within the technical requirements.
For fiber materials, the change of thermal conductivity is related to the diameter, orientation and density of fibers. When the fiber diameter and arrangement remain unchanged, the density of Jinan composite board is too low or too high, and its contribution to the heat preservation or heat insulation function is not obvious. The density distribution range is generally 80-100kg / m, from the perspective of heat insulation.
For different system applications, some basic principles can be followed when selecting composite board materials or developing composite board products: on the premise of meeting the use requirements (such as strength, fire safety, etc.). The thermal conductivity should be reduced as far as possible and the density should be in a reasonable range.