Polyurethane Rigid Foam (PUR) is a high-performance, closed-cell insulation material widely used in cold storage, cold-chain logistics, industrial refrigeration, and other low-temperature insulation applications. Its excellent thermal insulation, structural stability, and adaptability make it the material of choice for modern insulation projects.

Its core advantages include:

1. Outstanding Thermal Insulation

Low Thermal Conductivity: PUR exhibits thermal conductivity as low as 0.018–0.024 W/(m·K), making it one of the most effective insulation materials currently available. This reduces energy loss and lowers operational costs. High Closed-Cell Content (≥90%): The closed-cell structure blocks air convection, enhances moisture resistance, and prevents performance degradation due to water vapor infiltration.

Enhancement: The use of high-purity Cyclopentane, Isopentane, or n-Pentane as blowing agents ensures that the foam maintains its low thermal conductivity and closed-cell integrity over time, directly contributing to superior insulation efficiency.

2. Structural Strength and Durability

Compressive Strength and Deformation Resistance: With densities typically ranging from 35–60 kg/m³ and compressive strengths of 150–300 kPa, PUR can support internal racks, equipment, and transport loads. Dimensional Stability: Maintains its volume across extreme temperatures (-50°C to +100°C) with minimal shrinkage or cracking, ensuring long-term reliability.

Enhancement: The controlled purity of pentane-based blowing agents (<2 ppm sulfur, <50 ppm moisture) prevents defects during production and guarantees that the foam retains its strength and dimensional stability throughout its lifecycle.

3. Easy Installation and Adaptability

On-Site Spraying / Pouring: PUR can be applied seamlessly onto walls, roofs, or cavities, eliminating thermal bridges and providing a continuous insulation layer. Compatibility with Multiple Substrates: Bonds firmly to concrete, metal sheets, and composite panels, making it ideal for complex cold storage structures.

Enhancement: Using optimized pentane blends ensures uniform foam expansion and adhesion, improving application efficiency and minimizing material waste.

4. Environmental Friendliness and Safety

Low Global Warming Potential (GWP): Modern PUR systems employ environmentally friendly blowing agents such as Cyclopentane, Isopentane, or water-based formulations, reducing environmental impact. Fire Safety: With proper flame retardants, PUR can achieve B1-class flame resistance (GB 8624-2012), meeting stringent cold storage fire standards.

Enhancement: Our high-purity pentane products are fully compliant with international environmental regulations, providing a sustainable and safe option for manufacturers aiming to meet both GWP and fire safety requirements.

5. Economic Advantages

Although initial costs may be higher than traditional materials like EPS or rock wool, PUR’s long lifespan (20+ years) and energy-saving properties significantly reduce operating costs.

Enhancement: By selecting our reliable pentane blowing agents, manufacturers can achieve consistent foam quality and maximize energy efficiency, enhancing ROI over the lifetime of the insulation system.

Application Considerations

Controlled Installation Environment: Surfaces must be dry and clean; recommended temperature is 15–35°C with humidity below 85%. Insulation Thickness Design: Determined by the target cold storage temperature (e.g., -18°C for refrigeration or -60°C for ultra-low temperature). Typical PUR layers range from 50–150 mm. Safety Protection: Workers must wear protective gear to avoid exposure to uncured chemicals.

Enhancement: Using high-purity pentane ensures predictable foam behavior even under varying environmental conditions, reducing installation risk and ensuring design specifications are met.

Why Pentane-Based Blowing Agents Are Critical

The superior performance of PUR depends directly on the quality of the blowing agent. Our Cyclopentane, Isopentane, and n-Pentane products offer:

Purity Control: Low sulfur (<2 ppm) and low moisture (<50 ppm) for defect-free foam. Processing Stability: Uniform cell structure for optimal insulation and mechanical strength. Versatility: Suitable for a wide range of applications including cold storage, refrigerated trucks, and PIR/PUR panels. Environmental Compliance: Non-ozone-depleting, low GWP, aligned with global regulations.

Conclusion

Polyurethane Rigid Foam remains the top choice for modern cold storage insulation, offering unparalleled thermal performance, durability, and adaptability. High-purity pentane-based blowing agents are essential to fully realize these benefits, ensuring:

Maximum thermal insulation efficiency Consistent structural integrity Reliable production and long-term performance Compliance with environmental and fire safety standards

By choosing our products, manufacturers can deliver high-quality, energy-efficient, and environmentally responsible insulation solutions, ensuring optimal performance for decades.

n-Pentane 95%: Cost-Effective Blowing Agent for Insulation and Industrial Applications

Introduction

As industries worldwide move toward energy efficiency and sustainable construction, demand for versatile and affordable raw materials continues to grow. One such material is n-Pentane 95%, a high-performance hydrocarbon solvent widely recognized for its role in insulation foam manufacturing and industrial formulations.

Why Choose n-Pentane 95%?

Optimized Purity for Industrial Use

• Guaranteed 95% purity ensures consistent quality.
• Ideal for large-scale industrial applications where ultra-high purity is unnecessary.
• Balances performance and cost efficiency, making it a preferred choice for manufacturers.

Preferred Blowing Agent in Insulation Panels

• Extensively used in PU (polyurethane) and PIR (polyisocyanurate) sandwich panels.
• Common applications: roofing boards, cold storage insulation panels, and energy-saving construction materials.
• Compatible with modern production lines, helping manufacturers meet regional energy-efficiency standards.

Cost Efficiency

• More economical compared to higher-purity solvents.
• Attractive for bulk procurement and regular industrial use.
• Delivers reliable results without compromising application performance.

Versatile Industrial Applications

• Applied in adhesives, coatings, and cleaning formulations.
• Fast evaporation rate enhances efficiency in manufacturing processes.
• Reliable solvent properties make it suitable across multiple industrial sectors.

Packaging and Logistics

• Supplied in ISO tanks, steel drums, or customized bulk packaging.
• Logistics partners ensure compliance with international hazardous goods regulations.
• Safe and timely delivery for global clients.

Market Outlook

• Rapid construction growth in the Middle East, Asia, and emerging markets drives demand.
• Rising focus on energy-saving insulation materials strengthens n-Pentane’s role in sustainable infrastructure.
• n-Pentane 95% remains a cornerstone raw material for manufacturers delivering cost-effective, high-quality solutions.

In the heart of a bustling industrial hub, where innovation meets environmental stewardship, a quiet hero plays a pivotal role in shaping the future of construction. This hero is n-Pentane, a simple yet powerful hydrocarbon that has become the backbone of eco-friendly insulation solutions and is indispensable for modern manufacturing processes.

Once overlooked in favor of less sustainable alternatives, n-Pentane emerged as a game-changer in the production of high-performance insulation panels. These panels, widely applied in areas such as cold storage, roof and wall cladding, façades, and insulated industrial doors, depend on n-Pentane to create their lightweight, energy-efficient cores. Its introduction has revolutionized the thermal insulation industry while addressing critical environmental concerns. Unlike older materials that harmed the ozone layer, n-Pentane boasts a zero ozone depletion potential (ODP), affirming its role as a key enabler of environmentally responsible manufacturing.

The story of n-Pentane begins in advanced production facilities, where it serves as an essential blowing agent in creating polyurethane and polyisocyanurate foams. These foams rely on n-Pentane to expand and form tiny bubbles, resulting in a highly effective structure for heat insulation. This process transforms raw materials into reliable products such as panels for extreme climates, significantly reducing energy use across diverse applications. Whether safeguarding perishable goods in cold storage or improving building energy efficiency, n-Pentane is at the core of sustainable solutions.

What truly sets n-Pentane apart is its remarkable ability to combine outstanding performance with environmental sustainability. It is a perfect match for manufacturers who prioritize eco-friendly initiatives and compliance with global green building standards. By contributing to modern insulated panels, n-Pentane facilitates projects that aim for both durability and environmental responsibility, reflecting its alignment with global trends in sustainable construction.

Beyond its technical applications, n-Pentane ensures smooth supply chain operations. Manufacturers worldwide depend on its reliable quality to produce top-tier insulation products on tight timelines, meeting the evolving needs of their markets and projects.

In a world increasingly committed to sustainability, n-Pentane is far more than a chemical—it is a catalyst for progress. From protecting perishable goods to improving energy efficiency in construction, it enables a future where buildings are greener, energy is conserved, and the planet is preserved. As the drive for sustainable practices continues, n-Pentane remains an essential component in shaping a world where innovation and environmental care go hand in hand.

As the Marketing Director of Junyuan Petroleum Group, I am proud to share our industry insights on Cyclopentane, highlighting its growing role in the global refrigeration market. Based on our observations at the 2025 China Refrigeration Exhibition, this article explores Cyclopentane’s applications, technological advantages, and market potential worldwide.

Cyclopentane: A Green Solution for Modern Refrigeration

The global refrigeration industry is rapidly moving toward high efficiency, low carbon emissions, and smart solutions. Cyclopentane, as an eco-friendly blowing agent and refrigerant, has emerged as a key material driving this green transformation.

Environmental Benefits and Industry Value

Cyclopentane offers zero Ozone Depletion Potential (ODP) and an extremely low Global Warming Potential (GWP), fully meeting the environmental standards outlined in the Kigali Amendment. At the refrigeration exhibition, we observed numerous companies demonstrating low-carbon technologies where Cyclopentane-based blowing agents are already widely applied in household appliances such as refrigerators and freezers.

Technological Innovation and Application Expansion

Junyuan Petroleum Group’s high-purity Cyclopentane products leverage optimized production processes and stringent quality control to achieve industry-leading thermal conductivity and anti-aging performance. In ultra-low-temperature heat pump systems, our Cyclopentane products reliably perform under conditions below -30°C, offering robust solutions for cold chain logistics and industrial refrigeration worldwide.

Market Demand and Outlook

Industry experts forecast that, with the global drive toward carbon neutrality, the demand for eco-friendly refrigerants such as Cyclopentane is expected to grow at an annual rate exceeding 20% over the next five years. Particularly in regions investing in clean heating, industrial waste heat recovery, and energy-efficient refrigeration, Cyclopentane-based solutions are poised to play a significant role.

Junyuan Petroleum Group’s Core Advantages

Production Capacity: Our Cyclopentane production facilities have an annual output of 100,000 tons, ensuring stable supply of high-quality products. R&D Excellence: Collaborative laboratories with top universities, including Tsinghua University, enable continuous optimization of product performance. Customized Solutions: We provide tailored Cyclopentane products to meet diverse global applications, from household appliances to industrial systems.

Global Collaboration and Future Vision

Junyuan Petroleum Group is committed to partnering with refrigeration companies worldwide to advance Cyclopentane applications across multiple sectors:

Eco-friendly blowing agents for household refrigeration Energy-efficient retrofitting of commercial refrigeration systems Industrial waste heat recovery systems Thermal insulation for cold chain logistics

Through deep collaboration across industry, academia, and research, Cyclopentane will continue to drive the green transformation of the refrigeration industry, contributing to global carbon peak and neutrality goals.

Junyuan Petroleum Group looks forward to working with global partners to usher in a new era of sustainable refrigeration.

Junyuan Petroleum Group Marketing Department

April 2025