Polymer waterproofing membranes play a critical role in modern construction, with Thermoplastic Polyolefins (TPO) and Polyvinyl Chloride (PVC) being two widely used primary materials. Their long-term performance, particularly weatherability and durability, directly determines the reliability and service life of building envelopes. This article will delve into the impact of environmental factors on the molecular structures of these two materials from a materials science perspective and explore the underlying aging mechanisms and their respective application scenarios.
In the history of modern construction, persistent leakage, akin to a "water curtain cave," has long plagued the industry and end-users. The limitations of traditional waterproofing materials in terms of durability, environmental friendliness, and construction convenience have struggled to meet the higher demands of contemporary buildings for long-term safety, energy efficiency, and sustainability. Today, polymer waterproofing membranes, represented by PVC (Polyvinyl Chloride), TPO (Thermoplastic Polyolefin), and HDPE (High-Density Polyethylene), are leading a technological revolution with their superior performance, becoming the preferred solution for large public buildings, industrial plants, transportation hubs, and green roofs.
Since the beginning of the 20th century, SBS (styrene-butadiene-styrene) bitumen-based waterproof membranes have been widely used in waterproofing projects. With the rapid development of the times, they have been continuously improved and evolved to take into account the importance of environmental protection. For a long time, they have remained popular due to their low cost. As a representative of new synthetic polymer waterproof materials, TPO (thermoplastic polyolefin waterproof membrane) has developed rapidly in the European and American markets since its birth in the 1990s. Due to its advantages such as anti-aging, high tensile strength, large elongation, and ability to be applied to damp roofs, it has long occupied the number one position in the North American roofing market. Today, Canlon will take the roofing scenario as an example to analyze the performance comparison of TPO membrane and SBS membrane, two common roofing waterproofing materials.
Recently, Canlon has added another internationally authoritative certification – its TPO/PVC waterproof membrane has successfully passed the product rating accreditation of the Cool Roof Rating Council (CRRC) after three years of outdoor testing, making it one of the few domestic companies to hold certifications for both polymer waterproof materials. This also signifies that Canlon's roofing waterproofing products have reached internationally advanced levels in terms of thermal radiation efficiency and green energy-saving performance, opening new channels for expanding into the global green building market.
In recent years, with the advancement and deployment of carbon peaking and carbon neutrality initiatives, high-performance PVC and TPO polymer waterproof membranes, which offer energy savings and environmental benefits, have experienced rapid growth in China. Due to their superior physical properties, they exhibit exceptionally long-lasting aging resistance when used directly exposed, and have long held the position of "King of Roofing" in the North American market.
In order to cope with climate change and achieve sustainable economic development, clean energy transformation is the only way. It is a consensus among countries around the world that the development of hydrogen energy is an important part of achieving energy transformation. To achieve high-quality development of the green hydrogen industry, the construction of a high-standard and high-quality hydrogen energy plant is essential. However, compared with traditional plants, hydrogen energy plants are Class A plants with the highest fire and explosion protection requirements. They not only shoulder the strategic mission of optimizing energy structure and ensuring energy security, but also set a benchmark for industrial buildings to transform towards green energy. In this context, a green, energy-saving, durable and reliable roofing system has become a top priority.
On January 8, 2024, the "Glass Fiber Reinforced Thermoplastic Polyolefin (TPO) Waterproofing Membrane" T/CWA 215-2024 group standard edited by CANLON was officially approved and will be implemented on April 1, 2024
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