Insulation material
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Let’s discuss the advantages and disadvantages of various insulation materials, including their heat transfer coefficients, density, water resistance, ease of installation, cost, and suitable applications, such as rock wool, rubber-plastic materials, composite silicates, and jacketed foam.
Rock wool is generally used due to its cost-effectiveness and excellent thermal insulation properties. The downside is that it itches. Asbestos, its drawback is that it is carcinogenic.
Name, Grade, Volume, Mass/kg•m-3, Thermal Conductivity/W(m•K)-1, Specific Heat Capacity/kJ(kg•K)-1, Other Properties: Magnesium carbonate – 400, 0.05–0.07, 1.00; Moisture content required to be no more than 2.5%. Glass wool – 130, 0.03–0.04, 1.00. Expanded perlite (pearlite sand) – Diameter: 3–30 μm; Grade 1: ≤80, Grade 2: 150, 0.04–0.058, 0.04–0.05, 0.67, 0.84; 90% of the particles should have a diameter of less than 1 mm； 1–2mm grains 10% ； Slag wool, grade 100: moisture content ≤0.5%; ≤100, 0.044. Grade 150: moisture content ≤150, 0.038–0.047. Grade 200: moisture content ≤200, 0.033–0.052. 0.75, 0.84, 0.84. Moisture content ≤2%
The scope of this discussion is quite broad. For insulation purposes, we give priority to aluminum silicate fiber materials, while for heat retention we use rubber and plastic-based insulating materials such as Alesse from Germany and K-FLEX Fullex from Italy. The reason for this is that these materials result in relatively lower heat loss and gain, have a significantly longer service life, and are easy to install and maintain.