35# Paraffin PCM Wax: High-Performance Phase Change Material for Thermal Energy Storage & Temperatur
Introduction
In the fast-growing fields of renewable energy, building efficiency, and thermal management, paraffin-based Phase Change Materials (PCMs) have emerged as a reliable solution for storing and releasing thermal energy. Among various grades, 35# Paraffin PCM Wax stands out for its well-defined phase change temperature range and high latent heat, making it ideal for applications requiring stable thermal regulation.
What is 35# Paraffin PCM Wax?
35# Paraffin PCM Wax is a premium-grade hydrocarbon mixture refined from petroleum fractions. It is engineered to undergo a solid-liquid phase change within the 32.5℃ to 37.5℃ temperature range, absorbing large amounts of heat when melting and releasing it when solidifying. This process allows it to act as a "thermal battery," stabilizing temperatures and reducing energy consumption.
Key Performance Advantages
High Latent Heat (≥120 J/g): Efficiently stores thermal energy, minimizing temperature fluctuations
Stable Phase Change Behavior: No supercooling, ensuring consistent performance over thousands of cycles
High Purity & Normal Paraffin Content (≥90%): Low impurity levels prevent performance degradation
Non-toxic, Non-corrosive & Safe: Compliant with industrial and environmental standards
Versatile State Transition: Changes from solid to liquid within the target temperature range, suitable for both static and dynamic systems
Core Applications
The unique properties of 35# Paraffin PCM Wax make it suitable for diverse industries:
Building Insulation & HVAC: Reduces peak cooling/heating loads in commercial and residential structures
Cold Chain Logistics: Maintains temperature stability for sensitive pharmaceuticals and food products
Solar Energy Systems: Stores excess heat during the day for release at night
Electronic & Battery Thermal Management: Prevents overheating in high-performance devices
Textiles & Apparel: Creates temperature-regulating fabrics for extreme environments
Agriculture & Greenhouses: Stabilizes soil and air temperatures for optimal plant growth

Technical Specifications (35# Grade)
| Parameter | Specification | Test Method |
|---|---|---|
| Melting Peak Temperature | 32.5℃ ~ 37.5℃ | DSC Method |
| Latent Heat of Fusion | ≥120 J/g | - |
| Appearance | Light Yellow Semi-solid | Visual Inspection |
| Color | ≤2.0 | SH/T0403 |
| Water Soluble Acid/Alkali | None | SH/T0407 |
| Moisture Content | Trace | GB/T260 |
| Normal Paraffin Content | ≥90% | SH/T0400 |
Why Choose Paraffin PCM Wax Over Other Thermal Storage Materials?
Compared to other phase change materials, paraffin-based waxes offer several key benefits:
Cost-effectiveness: Abundant raw materials and scalable production lead to competitive pricing
Long Cycle Life: No significant performance loss even after repeated phase changes
Stable Chemical Properties: Resistant to degradation, ensuring long-term reliability
Wide Temperature Range Availability: Grades like 20#, 25#, 30# and 35# cover diverse application needs
Storage & Handling Guidelines
Store in a cool, dry, and well-ventilated warehouse
Keep containers tightly sealed and away from direct sunlight
Avoid exposure to high temperatures, open flames, and oxidizing agents
Use proper packaging (25kg bags, drums) to prevent contamination and leakage
Conclusion
35# Paraffin PCM Wax is a versatile, high-performance thermal energy storage solution that addresses the growing demand for temperature stability and energy efficiency. Its combination of high latent heat, stable performance, and safety makes it an ideal choice for applications ranging from building insulation to electronic cooling.