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  1. Look at the raw materials The  extruded board  is made of polystyrene resin. But many extruded boards on the market are made from recycled materials. Rarely are BASF crystals produced. From the raw materials, the ranking of the advantages and disadvantages of extruded boards: white crystal extruded board>blue extruded board>black extruded board. There are also red and yellow extruded boards on the market, which are generally similar to blue extruded boards. 2. Look at the microstructure One of the main USES of the extruded sheets is to use as floor heating insulation layer. The key to insulation lies in the continuous uniform surface layer and closed-cell honeycomb structure. The more uniform the pores, the better. The following three microstructures are white crystal board, blue board, and blackboard. The cells of the white crystal plate are uniform and closed. The blue plate cells are well closed. The black board has no bubbles and is basically not closed. 3. See the effec

  1. Resilience rate: Most   glass wool   is in the form of roll felt, which will be compressed during the packaging process. During use, it will be transported from the factory to the construction site and restored to its original thickness. 2. Thermal conductivity (thermal resistance): Thermal conductivity refers to the temperature difference between the two sides of a material with a thickness of 1m under stable heat transfer conditions, and the heat transferred through an area of 1 square meter in 1 hour, The unit is in watts/meter•degree (w/m•K). Thermal resistance: All building materials can block the movement of thermal energy to a certain extent and the ability to block heat flow is measured by thermal resistance. The higher the thermal resistance value, the higher the efficiency of blocking heat flow, which will save more energy costs. The thermal resistance value represents the resistance to heat flow. It is a measure of the thermal insulation capacity of any material. Therma

  In the insulation of air-conditioning ducts and the insulation of buildings, both  rubber insulation  cotton and   glass wool   can play a certain role in insulation, and both have similar performance. Because both have the advantages of energy-saving, convenient installation, labor cost-saving, and labor intensity reduction, they have good economic and social benefits and play an important role in creating an effective, energy-saving, comfortable and safe working environment and home environment. 1. Different appearance Rubber and plastic insulation materials are made of effective foam, soft and tough. It occupies very little space during the installation process, so it occupies very little space after completion and looks very beautiful after installation. The glass wool has an open-pore structure and is a hard inorganic material. During the installation process, it will take up a lot of space, especially the height of the ceiling will be affected, and it is not easy to form after

  Much like earplugs, the sound absorbing foam supplies individuals like you with the noise reduction high qualities they desire. These heaven-sent pieces soak up audio to ensure that any kind of noise you produce inside stays in, while external noise stays outdoors. How does   sound absorbing foam   block out these unwanted sounds? 1. Open Celled vs Closed Celled Foam To comprehend how foam minimizes audio, it is very important initially to discover how to differentiate in between both sorts of foams that absorb noises. While both sound proofing foam supplies their very own level of insulation and also barriers against sound, their properties identify them as two separate items. Airborne acoustical energy converts to warmth and also diminishes the amplitude of the noise signal. The power becomes shed in the process, which implies it's necessary to pick the soundproofing material that matches the air motion or pressure waves with the right amount of control degrees. A. Open cell fo

  In the field of architecture, the quality of a building is directly related to its material design. Therefore, when choosing building materials, There are a lot of people who will also ask the glass wool practical reflected in what aspects? Always cannot say oneself spent big price to buy after a batch of vitreous cotton, connect its use sex to highlight in what respect all do not know, the loss that oneself suffer in that way is particularly much also. First of all, the sound insulation of  glass wool  is particularly good. For example, if you are decorating the boss’s office or the home, if its sound insulation is not good, it will affect everyone’s work and life, but it can be If you use glass wool, it can play a very good sound insulation effect, even if it is noisy outside, you still can't hear any noise, which can bring great convenience to life and work. Secondly, it can be cut at will, because when you buy a batch of glass wool, the size is not certain. When you use the g