Behavioral Summary: This article analyzes the safety of polyurethane materials, combined with their fire resistance, environmental certification, and production standards.
The safety foundation of polyurethane
Polyurethane (PU), as a polymer material, requires comprehensive evaluation of its safety from raw materials, production processes, and finished product performance. During the production process, although the main raw materials such as isocyanates and polyols have certain toxicity, they form stable polymer structures after complete reaction, and the finished product has no volatile residues. Modern technology further reduces the pollution risk in the production process by using "reactive surfactants" and environmentally friendly foaming agents (such as fluorine free formulations).
Hebei Lanxuan Energy saving Building Materials Co., Ltd. strictly follows the ISO 14001 environmental management system and ISO 9001 quality management system in the production of polyurethane products, ensuring environmental compliance throughout the entire chain from raw materials to finished products.
Fireproof performance: the core indicator of safety
The fire resistance of polyurethane is the key to safety. According to national standards, building insulation materials must achieve * * B1 level (flame retardant) or B2 level (combustible) combustion performance. Qualified polyurethane rigid foam can form a carbonized layer when exposed to fire, blocking oxygen and suppressing the spread of fire, without melting droplets, significantly reducing the risk of fire.
However, some inferior products may have flammable hazards due to substandard formulas. The warning notice issued by Langfang Housing and Urban Rural Development Bureau in 2025 emphasizes the need to strictly test the combustion performance of polyurethane materials, eliminate the practice of "passing off inferior materials as good", and take protective measures such as fireproof wrapping during construction.
Environmental and health impacts
1. Formaldehyde free and low toxicity:
Polyurethane finished products are non-toxic, but attention should be paid to the volatilization of residual catalysts during the production process. Hebei Lanxuan adopts nano modification technology to produce polyurethane insulation boards that have passed the "formaldehyde free" certification and comply with environmental standards such as REACH in Europe and America.
2. Recyclability:
Waste polyurethane materials can be recycled and reused to reduce resource waste. For example, the recycling rate of polyurethane insulated straight seam steel pipes is over 80%.
Practical cases of secure applications
Taking Hebei Lanxuan Energy saving Building Materials Co., Ltd. as an example, its polyurethane products demonstrate safety in the following aspects:
1. Compliant production: Improve combustion performance through "hybrid bonding" technology to meet the new national standard B1 level requirements (combustion growth rate ≤ 250 W/S), and pass multiple tests such as fire and moisture prevention.
2. Engineering application: The product is widely used in industrial plants, pipeline insulation and other fields, with insulation, waterproofing and fire prevention functions. The "seamless spraying process" is adopted during construction to avoid cold bridge and hot junction problems.
3. Quality control: Establish a traceable ledger to ensure the safety of the entire process from production to construction of materials.
Conclusion: Safety comes from regulations
Polyurethane materials themselves have safety, but their practical application relies on compliant production, strict selection, and standardized construction. Choosing products from authoritative certified enterprises such as Hebei Lanxuan and following construction standards such as fire prevention and anti-aging can maximize risk avoidance and achieve the dual goals of safety and energy conservation.
Reference: The data and cases in the article are based on industry reports and enterprise practices. For specific standards, please refer to "Classification of Combustion Performance of Building Insulation Materials" (GB 8624-2012).