Jiaxing CMAG Composite Material Co., Ltd. is one of the most reliable manufacturers and suppliers of perforated aramid paper honeycomb core in China, specialized in providing high quality custom service. Welcome to wholesale high-grade perforated aramid paper honeycomb core made in China here from our factory.
Perforated aramid paper honeycomb core refers to a special functional aramid paper honeycomb product manufactured by a perforation process that creates holes on the cell walls (excluding the node areas). Like slotted aramid paper honeycomb cores, it retains the excellent inherent properties of conventional aramid paper honeycomb while acquiring unique functional characteristics through structural modification. Compared with slotted honeycomb cores, perforated cores offer higher manufacturing precision and are applicable to a broader range of applications.
Product Specifications：
The product specifications of perforated aramid paper honeycomb cores are highly customizable to meet a wide range of application requirements.
| Cell Geometry | The cell side length is commonly available in 1.83 mm, 2.75 mm, and other sizes, and can be tailored within a range of 1.8–5.5 mm as needed. |
| Density Range | The core density can be flexibly adjusted from 29 to 144 kg/m³, and can be extended up to 160 kg/m³ upon request. |
| Finished Dimensions | Standard honeycomb blocks are available in sizes up to 1200 × 2400 mm, with thickness cut to customer requirements. A typical specification is 1300 × 2600 mm with a thickness range of 1–900 mm. Example model: cell side length 1.83 mm, density 48 kg/m³, dimensions 1300 × 2600 × 10 mm. |
| Supply Forms | The product can be supplied in various forms, including cured, pre-impregnated, and over-expanded, to accommodate different forming processes. |
| Perforation Diameter | The perforation diameter can be customized according to customer requirements, with a dimensional tolerance of ±0.1 mm. The minimum perforation diameter currently achievable is 1.00 mm; however, this is dependent on the W-direction dimension of the honeycomb-the larger this dimension, the larger the perforation diameter that can be accommodated. |
Advantages and Characteristics:
Aramid paper honeycomb cores exhibit outstanding specific strength and specific stiffness, with the specific stiffness approximately nine times that of steel. While maintaining excellent rigidity, they significantly reduce structural weight-over 50% lighter than aluminum honeycomb-contributing to lightweighting objectives.
Although perforated honeycomb cores show slightly lower compressive and shear properties compared to conventional honeycomb cores of the same density, the localized material removal from perforation results in less stress concentration around the holes, leading to a higher compressive strength retention rate (up to 80% of that of conventional honeycomb).
Ventilation and flow guidance: The perforated structure enables airflow to pass vertically through the honeycomb along the Z‑direction, with straight‑line passage that offers low resistance, high ventilation efficiency, and resistance to clogging. This makes it suitable for interlayer ventilation, heat dissipation, and wave‑transparent applications.
Sound absorption and vibration damping: The perforations, together with the honeycomb cells, form a micro‑perforated panel sound‑absorbing structure, providing significant noise absorption in the mid‑to‑high frequency range. This outperforms the simple cavity resonance absorption found in slotted honeycomb cores.
During hot‑pressing lamination with face sheets, perforated honeycomb cores do not require equipment‑based de‑airing, allowing higher core‑to‑skin bond strength to be achieved while reducing dependence on specialized equipment.
Applications:
Perforated aramid paper honeycomb cores are better suited for high‑precision, high‑performance functional integration applications. In the aerospace sector, the unique ventilation architecture of perforated honeycomb cores offers distinct advantages in applications requiring effective airflow, such as avionics bay cooling, radome ventilation, fairing airflow guidance, and under‑floor cabin ventilation. These cores are also applicable to rail transit, shipbuilding, industrial equipment, and new energy sectors, among others.
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