With the in-depth advancement of the Dual Carbon strategy and continuous upgrading of energy-saving standards for buildings and industries, thermal insulation materials, as core functional materials for energy saving and temperature control, are widely used in building walls, roofs, pipelines & equipment, industrial kilns, cold chain storage and transportation and many other fields. They are an indispensable part of the modern energy conservation and environmental protection system.

The core working principle of thermal insulation materials relies on their special porous, loose or fibrous structure, which traps stationary air. This greatly slows down air convection and heat conduction, blocking heat transfer and cutting temperature loss. These materials also deliver extra benefits including heat insulation, fire resistance and noise reduction.

Based on material properties and forming processes, thermal insulation materials fall into three categories: organic insulation materials, inorganic insulation materials and composite insulation materials. Representative organic insulation materials include polyurethane, EPS polystyrene board, XPS extruded board and phenolic foam. Featuring low thermal conductivity, light weight, easy installation and excellent insulation performance, they are the mainstream choice for exterior walls and roof insulation of civil buildings. Among them, polyurethane insulation boasts extremely low thermal conductivity and high closed-cell rate with outstanding waterproof and moisture-proof performance, ideal for cold storage and pipeline insulation. EPS polystyrene board offers good cost performance and simple construction, widely adopted in general civil insulation projects.

Inorganic insulation materials cover rock wool, mineral wool, glass wool, aluminum silicate, foamed cement, perlite and so on. Their biggest strengths are fire resistance, high-temperature resistance, anti-aging properties and non-toxicity, making up for the weak fire performance of organic insulation. With high fire resistance rating and tolerance for temperatures ranging from hundreds to over a thousand degrees Celsius, they are mainly used for high-temperature industrial equipment, building partition walls and exhaust duct insulation where strict fire codes apply. They also enjoy long service life, strong deformation resistance and very low maintenance cost.

Composite insulation materials are innovative products that combine the advantages of organic and inorganic raw materials. Through composite manufacturing, they integrate insulation, fire resistance, compression resistance, waterproofing and other functions in one product, overcoming the performance limitations of single-component materials. As energy efficiency standards grow stricter, traditional single-type insulation can hardly meet high-standard engineering requirements. New composite products such as composite insulation panels and integrated insulation & decoration boards are gradually becoming the mainstream trend of the industry.

From an industrial perspective, applying thermal insulation materials is a key measure to cut energy consumption and carbon emissions. In the construction sector, heat loss through walls, windows and roofs accounts for more than 40% of total building energy consumption. High-quality insulation materials can reduce heating and cooling energy use of buildings by roughly 30%. In industrial scenarios, insulation for pipelines and equipment minimizes heat waste during production, improves energy efficiency and lowers operating costs for enterprises.

In the future, as green buildings, ultra-low-energy buildings and nearly zero-energy buildings gain wider adoption, thermal insulation materials will keep evolving toward high flame retardancy, low thermal conductivity, superior weather resistance, eco-friendliness and integrated modular solutions, offering solid support for the growth of the energy-saving and environmental protection industry.

Based on material properties and forming processes, thermal insulation materials can be divided into three main categories: organic, inorganic, and composite insulation materials. Organic insulation materials, represented by polyurethane, polystyrene boards, extruded polystyrene boards, and phenolic foam, feature low thermal conductivity, light weight, easy installation, and excellent insulation performance. They are the mainstream choice for exterior-wall and roof insulation in residential buildings. Polyurethane insulation has exceptionally low thermal conductivity, a high closed-cell content, and outstanding water and moisture resistance, making it suitable for specialized applications such as low-temperature cold-storage facilities and pipe insulation. Polystyrene boards are cost-effective and easy to install, and are widely used in conventional residential-building insulation projects.

Inorganic insulation materials include rock wool, mineral wool, glass wool, aluminum silicate, foamed cement, and perlite. Their primary advantages are fire resistance, flame retardancy, high-temperature resistance, aging resistance, environmental compatibility, and non-toxicity, addressing the relatively weak fire performance of organic materials. These materials offer high fire-resistance ratings and can withstand temperatures ranging from several hundred to more than 1,000°C. They are mainly used for high-temperature industrial equipment, building partitions subject to stringent fire-safety requirements, and insulation for ventilation and smoke-exhaust ducts. They also have a long service life, resist aging and deformation, and require very little maintenance.

Composite insulation materials are innovative products that combine the advantages of organic and inorganic materials. Through composite manufacturing processes, they integrate thermal insulation, fire resistance, compressive strength, and waterproofing, overcoming the performance limitations of individual materials. As energy-efficiency standards continue to rise, conventional single-material insulation products are increasingly unable to meet the requirements of high-standard projects. New composite products, including composite insulation panels and integrated insulation-and-decorative panels, are gradually becoming a mainstream direction for the industry.

From an industry perspective, the use of thermal insulation materials is a key measure for reducing energy consumption and carbon emissions. In buildings, heat loss through walls, doors, windows, and roofs accounts for more than 40% of total building energy consumption. High-quality insulation materials can reduce energy use for heating and cooling by approximately 30%. In industrial applications, insulating piping and equipment reduces heat loss during production, improves energy efficiency, and lowers operating costs. As green buildings, ultra-low-energy buildings, and nearly zero-energy buildings become increasingly widespread, insulation materials will continue to advance toward greater flame retardancy, lower thermal conductivity, stronger weather resistance, improved environmental performance, and integrated solutions, providing solid support for the development of the energy-conservation and environmental-protection industry.