According to information from the China National Intellectual Property Administration, Jiangxi Yinshan White Cement Co., Ltd. filed a patent application titled “A Radiative Cooling Pavement Brick and Its Preparation Method” in January 2026, with publication number CN122079577A. This marks another significant patent filing in the field of passive radiative cooling technology, following the company’s launch of the world’s first “Ultra-Cool Cement” in late 2025. The patent represents a strategic expansion of the technology from building facades and industrial applications into urban infrastructure.
Three-Layer Structure Design Balancing Cooling Performance and Durability
According to the patent abstract, the radiative cooling pavement brick features a three-layer structure from bottom to top: a base layer, a functional layer, and a topcoat layer.
- Both the base layer and functional layer are cement-based materials, ensuring strong bonding and structural integrity for long-term durability.
- The functional layer serves as the core of the radiative cooling function, comprising the following raw materials by weight: 20‑50 parts cement-based cementitious material, 20‑50 parts radiative cooling functional filler, 0‑30 parts aggregate, 0.5‑2.5 parts admixture, and 0.1‑0.5 parts reinforcing fiber.
- The topcoat layer is coated with an inorganic nano high-hardness self-cleaning material, providing both self-cleaning and wear resistance while preserving the cooling effect
Technical Principle: Synergistic Cooling via Functional Fillers and Hydration Products
The core technological breakthrough of this patent lies in: achieving efficient, sustained radiative cooling through the synergistic effect of radiative cooling functional fillers in the functional layer and cement hydration products with radiative cooling capabilities. This technical approach builds upon the energy-free, refrigerant-free passive cooling principle of YINSHAN’s “Ultra-Cool Cement,” achieving autonomous temperature reduction through high solar reflectance and high infrared emissivity that radiates heat into outer space.
- Application Prospects: From Grain Storage and Oil Tanks to Urban Pavements
YINSHAN’s “Ultra-Cool Cement” has already been deployed in urban buildings, grain storage facilities, oil tank protection systems, outdoor equipment cooling, cold chain transportation, and livestock farm temperature control. The radiative cooling pavement brick patent extends this technology to urban pavements, plazas, and other outdoor public infrastructure.
Against the backdrop of intensifying urban heat island effects, large-scale application of radiative cooling pavement bricks is expected to significantly reduce urban surface temperatures, decrease secondary radiant heat from the ground to buildings and the environment, and thereby lower overall urban cooling energy consumption — offering a ground-level solution for mitigating urban heat island effects and advancing China’s national “Dual Carbon” strategy.
- Continued R&D Investment, Building a Radiative Cooling Technology Patent Portfolio
- Founded in 2013 and headquartered in Ji’an, Jiangxi Province, YINSHAN is a national-level “Specialized, Refined, Differential and Innovative” enterprise in the non-metallic mineral products industry. In recent years, the company has steadily increased R&D investment in passive radiative cooling materials, having previously filed related patents for inorganic radiative cooling coatings and inorganic ultra-white radiative cooling materials, while also serving as a core technology participant in the first batch of national “Good Materials for Good Housing” technology research projects. To date, the company holds 71 patents.
From “Ultra-Cool Cement” to radiative cooling pavement bricks, from inorganic coatings to paving materials, YINSHAN is building an increasingly comprehensive product matrix and intellectual property protection system around passive radiative cooling technology, solidifying its leadership position in the field of inorganic radiative cooling materials.
Post time: Jul-07-2026