Heat-Shrinkable Busbar Tubing
Products Description
Heat-Shrinkable Busbar Tubing is essentially a high-tech product that utilizes the "shape memory effect" of polymer materials to achieve its functions.
Intelligent "Memory" Characteristics: At the factory, it is expanded to a larger size for easy fitting. When activated by a heat source, it "remembers" its original, smaller size and generates a strong radial shrinkage force, tightly wrapping the internal object.
Multiple Functional Integrations:
Main Insulation Layer: Provides excellent electrical insulation, preventing short circuits and electric shock.
Mechanical Protection Layer: Resists scratches, impacts, and chemical corrosion.
Sealing Protection Layer: (Adhesive-backed version) Forms a completely airtight and watertight barrier through the hot melt adhesive on the inner wall, preventing the intrusion of moisture, dust, and corrosive gases.
Identification System: Achieves clear phase sequence, voltage, or function identification through different colors and printing.
Heat Shrink Performance Optimization Technology
Low-Temperature Rapid Shrinkage
Initial shrinkage temperature as low as 80℃, complete shrinkage temperature ≤120℃, shortening installation time and adapting to rapid on-site construction;
Directional Shrinkage Design
Through optimized material formulation, "radial shrinkage is dominant, axial shrinkage ≤5%" is achieved, avoiding installation inconvenience caused by significant length reduction during shrinkage.
Irregular Shape Adaptation Optimization
For irregular structures such as busbar bends and branches, the material flexibility is optimized, allowing it to deform with the PE Heat Shrink Tube Insulated Busbar contour after shrinkage, without cracking or dead angles.
Material Advantages: A Performance Revolution in Bio-based Thermosensitive Systems
Material design directly addresses the core pain points of installation failure:
Environmentally friendly thermosensitive substrate: 95% bio-based polymer (derived from sugarcane fiber), halogen-free and phthalate-free
Microcapsule precise control: Customizable PCM phase change temperature (80℃/90℃/100℃) to adapt to different operating conditions
Gradient thermal conduction: A High thermal conductivity inner layer/low thermal conductivity outer layer ensures uniform temperature during shrinkage
Sustainable value: 100% recyclable materials, reducing the carbon footprint of production by 50%
These material advantages enable the heat shrink busbar to maintain insulation integrity up to 99.5% in high-temperature and high-humidity environments, while avoiding insulation carbonization caused by overheating in traditional heat shrink tubing.
Detailed Demonstration: Verifying the Superior Performance of Smart Materials
| High-Speed Photography Recording the Shrinkage Process | High-speed photography reveals that when our Busbar sleeve is heated, the shrinkage wavefront progresses smoothly and uniformly along the axial direction from the starting point, with the tubing wall thickening uniformly, ultimately resulting in a smooth and flat surface free of bubbles or wrinkles. This demonstrates the uniformity of material memory recovery and the precision of the manufacturing process. |
| Microscopic Analysis of the Sealing Interface | The coated sample was dissected, and the cross-section was observed under a microscope. It is clearly visible that the inner hot melt adhesive fills all gaps between the conductor threads, burrs, and the tubing wall, forming a continuous and uninterrupted sealing layer. Air tightness tests show an extremely low leakage rate. |
| Accelerated Aging Comparison Experiment | Our Customized Busbar Heat Shrink Tubing and ordinary heat shrink tubing samples were placed under the same damp heat aging, temperature cycling, and salt spray testing conditions. After hundreds of hours, ordinary products may exhibit surface powdering, cracking, loss of shrinkage force, or adhesive failure; while our product's key performance characteristics (insulation resistance, sealing performance, peel strength) retain a rate far exceeding industry standards, verifying its long-term reliability. |
| Real-world combustion safety performance test | In a vertical combustion test, our flame-retardant Busbar Insulating Heat Shrink Tubing self-extinguished rapidly after being removed from the flame, with a short burning length and no dripping material igniting the gauze below. This characteristic is crucial for preventing the spread of electrical fires in confined spaces. |
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