Polyurethane Rigid Foam Spraying Composite Material for Bus Interior

2. Key Performance Characteristics

1. The material has a low viscosity, which makes it easier to mix with long glass fibers and has a good wettability to long glass fibers. This ensures that the long glass fibers are evenly dispersed in the material, enhancing the structural performance of the products.
2. It has a long cream time, providing sufficient operation time for the mixing and pouring processes of large – scale products. This effectively guarantees the smooth progress of the production process and avoids problems such as uneven mixing or insufficient pouring caused by rapid reactions.
3. It has the characteristic of rapid demoulding, which greatly shortens the residence time of products in the mold, improves production efficiency, and contributes to large – scale industrial production.
4. The products made from it have a relatively low density, reducing the weight of automotive interior parts. At the same time, they also have good heat resistance and can maintain stable performance in a certain high – temperature environment, meeting the usage requirements of automotive interior parts.
5. It has good adhesion to various surface decorative materials and can be formed in one step, reducing subsequent processing procedures. This not only improves production efficiency but also ensures the overall quality of the products, making the appearance and performance of the products more excellent.
6. This compound achieves zero emissions and is environmentally friendly. It can effectively replace traditional high – pollution fiberglass materials, meeting the strict environmental protection requirements of modern industry.

3. Material System Specifications

Packaging Configuration

• Component A (Polyol Blend): 200 kg/steel drum

• Component B (Isocyanate): 250 kg/steel drum

• Ratio: 100:180 by weight (A:B)

• Tolerance: ±2%

4. Storage & Handling Protocol

This product should be stored in a cool, well – ventilated, and dry warehouse. It is necessary to strictly prevent the product from being exposed to rain and direct sunlight, completely isolate it from fire sources, and keep it away from various heat sources. The suitable storage temperature ranges from 10°C to 35°C.

Environmental Requirements

• Storage Temperature: 10-35°C

• Relative Humidity: <60% RH

• Protection: UV-resistant covering mandatory for outdoor storage

Shelf Life & Quality Assurance

• 6 months in original sealed packaging. When the original packaging remains unopened, the storage period of this product is calculated from the production date and is 6 months. If the storage period is exceeded, it can be inspected according to the items specified in this product standard. If the inspection results meet the technical requirements, it can still be used.

• Post-expiry reactivation requires:

  • Viscosity test (<500 mPa·s at 25°C)

  • -NCO content verification (31.5±1.5%)

Transportation Compliance

• UN Non-Hazardous Material Classification

• Weatherproof securing per GB/T 9174-2020