Pore Structure Defines Material Performance
This image is a nano-CT scan of a Y-Warm sample. The sample was reconstructed from sequential cross-sectional scans along the XY, XZ, and YZ axes, generating approximately 3,000 slice images per sample. The image shown here is a single slice selected from this dataset.
In the image, the white regions represent the solid walls of the nano-scale closed cells (the polyester scaffold structure). The black regions represent pore spaces with micrometer-scale diameters.
Pore wall thickness: 20–280 nm
Pore diameter: 30–190 μm
This image was obtained by cutting Y-Warm with a sharp blade to expose the cross-section, followed by gold sputter coating and imaging using SEM (scanning electron microscopy).
The internal structure of Y-Warm shows a honeycomb-like morphology, composed of nano-scale pore walls and discrete, micrometer-scale isolated pores.
From a porous materials perspective, closed-cell structures generally provide better thermal insulation than open-cell structures, and smaller pores tend to improve insulation performance compared to larger ones. In addition, thinner cell walls reduce material density and increase resistance to heat transfer, which further enhances thermal insulation efficiency.
Y-Warm is a fabric, yet it does not feel quite like one; it resembles paper, yet is not paper.
Its surface is slightly rough, and it provides a warm hand feel in winter. Even after being stored for several days in a -60°C chamber, it does not feel icy when in contact with skin. It can absorb several times its own weight in water while still remaining afloat on the water surface.
Features & Performance
Due to its rough surface and ultra-thin structure, Y-Warm cannot be accurately measured for absolute thermal conductivity using standard methods.
Measured thermal conductivity varies depending on the testing method.
When the outer fabric is frozen through, the Y-Warm layer significantly blocks the inward conduction of cold air. Conversely, when body heat is emitted, the layer minimizes heat loss. It effectively reduces the exchange and conduction of thermal energy.
An eco-friendly antibacterial agent compliant with textile safety and environmental standards is integrated into the polymer. During material formation, the structure encapsulates the agent, allowing antibacterial performance to remain effective even after repeated washing.
The Y-Warm surface is rough because of holes with micrometer diameters, which increases the specific surface area and gives it a very high emissivity, allowing it to have far-infrared functionality.
The front of Y-Warm is textured, while its back surface is smooth.
Theoretically, Y-Warm maintains consistent thermal insulation regardless of orientation. Choose the side that best aligns with your specific application needs, whether you prioritize surface feel or integration as a flexible insulation material.
Width: 150CM
Per roll: 50M
Per box: 2 rolls/100M
Inner packaging: plastic film
Outer packaging: cardboard box
It has a certain hand feel and is only suitable for use as an insulating layer in winter jackets, shoes, and other cold-weather items; it also has good wrinkle recovery.
Y-Warm has very little stretch in both the warp and weft directions. If needed, you can cut on the bias.
A 50-meter roll of Y-Warm can be easily lifted, spun, and tossed by a girl with one hand.
Wash with cold water
Machine washable
Low-temperature drying
1. Storage and maintenance: Same as regular textile raw materials and finished products.
2. Shelf life: As long as the structure isn’t damaged, it’s good indefinitely.
Textile CLO and RCT tests are designed based on how fluffy materials keep you warm, and they are directly related to thickness. Y-Warm's ultra-thinness falls into high-performance insulation materials, which CLO and RCT can't effectively measure.