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Waterproofing and moisture resistance are becoming key focuses in the development of perlite insulation materials. Dacheng Xiangdong Insulation Refractory Material Factory – contact us at 13473696600 or 15731614448.
Moisture resistance is now a major trend in the evolution of perlite insulation boards. The water absorption rate of a material plays a critical role when choosing thermal insulation products. Water has a thermal conductivity 23.1 times higher than air at room temperature. When perlite insulation absorbs water, it not only significantly reduces its insulating performance but also accelerates metal corrosion, which can be very damaging.
The internal structure of thermal insulation materials is typically classified into three types: open-cell, closed-cell, and semi-closed-cell. Except for some organic foam plastics, most insulation materials tend to absorb water regardless of their pore structure. This is because the interconnected gaps allow capillary action, leading to high overall water absorption.
In China, the majority of thermal insulation materials currently available are not water-repellent and have a high water absorption rate. As a result, the outer sheath must meet strict waterproofing requirements, increasing the overall cost of the system.
To address this issue, silicone-based water-repellent agents have emerged as an effective solution for improving the water resistance of insulation materials. These modifiers provide long-lasting hydrophobic properties by chemically bonding with inorganic silicate materials.
The hydrophobic mechanism of perlite insulation boards involves the use of organosilicon compounds that strongly interact with the silicate matrix. This chemical reaction changes the surface characteristics of the material, making it resistant to water. This method offers excellent stability, low cost, and a straightforward application process.
By enhancing the waterproof performance of perlite insulation, manufacturers can improve the durability and efficiency of building systems while reducing maintenance costs. As the demand for energy-efficient and long-lasting insulation solutions grows, waterproofing will continue to play a vital role in the future of perlite technology.