近年來，保溫材料的品種不斷增多，可選范圍也不斷增大。材料品種的多樣化，導致性能指標的多樣化。究竟如何合理選用，
就必須對常用保溫材料的相關性能、優(yōu)缺點有所了解，綜合對比才能根據(jù)使用要求做出相對合理的選擇。
玻璃棉制品
該材料是目前較常用的一種保溫材料，主要性能有：質輕〔容重或密度小，每立方米重量在1290kg之間，隨用途而異），導熱系數(shù)小，一般為0.034(w/mk)之間，
且隨溫度而異.該材料耐高溫，是非燃材料，最高使用溫度可達300℃；不腐、抗老化，不溶于水和有機溶劑，耐空氣中CO2，SO2侵蝕；但由于該材料吸水率大，
因此防水性能較差。且玻璃棉吸水后，保溫效果將大大下降，即使風干后也不能恢復至原來的性能。因此在保溫要求嚴格的場合，已受潮或濕了水的玻璃棉不能再使用。
基于玻璃棉保溫材料良好的保溫綜合性能及抗化學性能，已被廣泛用于建筑、工業(yè)和空調的保溫、防火和消音等工程。
發(fā)泡塑料制品
發(fā)泡塑料制品（包括聚乙烯、聚氨脂，聚苯乙烯）具有質輕、密度小，每m3的容重約為2040kg；導熱系數(shù)小，一般在0.0170.027(w/mk)之間，視環(huán)境溫度而異。
該材料最高使用溫度在100℃以下，一般不超過70℃；吸水率低，具有較強的防水性。該材料多用于零度以下低溫保冷工程如制氧、冰箱的隔熱等。為了符合建筑防火規(guī)范的要求，
廠家專門生產(chǎn)出自熄性難燃B1級泡沬塑料如聚乙烯等，聚乙烯保溫材料具有微細的獨立氣泡結構，富彈性，加工容易，可以任意裁切，易貼合而且低吸水率。
橡塑隔熱材料，即橡膠類發(fā)泡材料
發(fā)泡橡塑類保溫材料的特性與發(fā)泡塑料制品比較接近，質輕、彈性好、韌性好、導熱系數(shù)小、氣密性好、抗水、耐腐蝕、抗壓、施工性好，適用于介質溫度在-40℃-105℃間各種管道及設備的保溫。
橡膠類發(fā)泡材料應屬質量較好的一種保溫材料，同時該材料制品的價格也比較昂貴。
In recent years, the variety of insulation materials has been increasing, and the range of options has also been increasing. The diversification of material varieties leads to the diversification of performance indicators. How to choose reasonably,
It is necessary to understand the relevant performance, advantages and disadvantages of commonly used thermal insulation materials, and comprehensive comparison can make a relatively reasonable choice according to the requirements of use.
Glass wool products
The material is currently a more commonly used thermal insulation material, the main properties are: light weight [bulk density or density is small, the weight of each cubic meter is between 1290kg, depending on the use), the thermal conductivity is small, generally between 0.034 (w/mk),
And it varies with temperature. The material is resistant to high temperature, is a non-combustible material, and the maximum use temperature can reach 300 °C; Non-rotten, anti-aging, insoluble in water and organic solvents, resistant to CO2 and SO2 erosion in the air; However, due to the large water absorption rate of the material,
Therefore, the waterproof performance is poor. And after the glass wool absorbs water, the insulation effect will be greatly reduced, and even after air drying, it cannot return to the original performance. Therefore, in the occasion of strict insulation requirements, glass wool that has been wet or wet can no longer be used.
Based on the good comprehensive performance and chemical resistance of glass wool insulation materials, it has been widely used in construction, industrial and air conditioning insulation, fire prevention and sound suppression projects.
Foamed plastic products
Foamed plastic products (including polyethylene, polyurethane, polystyrene) have light weight and low density, and the bulk density per m3 is about 2040kg; The thermal conductivity is small, generally between 0.0170.027 (w/mk), depending on the ambient temperature.
The maximum use temperature of the material is below 100 °C, generally not exceeding 70 °C; Low water absorption, with strong waterproofness. The material is mostly used in sub-zero low-temperature cold preservation projects, such as oxygen production, refrigerator heat insulation, etc. In order to comply with the requirements of the building fire code,
Manufacturers specialize in the production of extinguishing flame retardant B1 grade foam plastics such as polyethylene, polyethylene insulation material has a fine independent bubble structure, elastic, easy to process, can be arbitrarily cut, easy to fit and low water absorption.
Rubber and plastic insulation materials, that is, rubber foam materials
The characteristics of foamed rubber and plastic insulation materials are relatively close to foamed plastic products, light weight, good elasticity, good toughness, small thermal conductivity, good air tightness, water resistance, corrosion resistance, pressure resistance, good workability, suitable for medium temperature between -40 °C-105 °C various pipelines and equipment insulation.
Rubber foam material should be a kind of insulation material with better quality, and the price of this material product is also relatively expensive.
