B1/B2 grade polyurethane rigid foam spray combination for cold storage

Product Introduction

2.1 Product Name

Cold Storage - Grade B1 Polyurethane Rigid Foam Spraying Combination
Cold Storage - Grade B2 Polyurethane Rigid Foam Spraying Combination

2.2 Foaming Agent Features

The foaming agent for both products is an environmentally - friendly one with an ultra - low thermal conductivity. When used in combination with WANNATE®2208, it can be applied to various substrates such as cement surfaces, brick surfaces, wood surfaces, etc. It has strong adhesion, good dimensional stability, and excellent flame - retardant properties.

2.3 Flame - Retardant Performance

Product Grade	Flame - Retardant Performance Standard
Grade B1	B1 level (GB8624 - 2012)
Grade B2	B2 level (GB8624 - 2012)

3. Product Applications

Both products are applicable to various spraying fields for cold storage and building interior insulation with operating temperatures above - 25°C. They are fast - curing systems suitable for most spraying insulation construction requirements. Before use, it is necessary to conduct tests to ensure the reliability of the combination system for specific projects.

4. Physical and Chemical Properties

Item	Grade B1 Indicators	Grade B2 Indicators
Viscosity at 25°C, mPa•s	50 - 200	50 - 200
Density, g/cm³	1.10±0.10	1.10±0.10
Color	Light yellow or yellow	Light yellow or yellow
Free Foaming Parameters - Cream Time, s	2-3	2-3
Free Foaming Parameters - Gel Time, s	9-10	9-10
Free Foaming Parameters - Tack - Free Time, s	10-13	10-13
Free Foaming Parameters - Free Foaming Density, Kg/m³	32 - 45	28 - 35
Physical Properties - Mechanism Foam Density, kg/m³	≥45	≥37
Physical Properties - Thermal Conductivity, W/(m·k)	≤0.024	≤0.024
Physical Properties - Compressive Performance (10% Deformation), kPa	≥200	≥150
Physical Properties - Dimensional Stability (70°C, 48h), %	≤1.5	Not provided in the original document, assumed to be different from B1 grade according to general industry practice
Physical Properties - Tensile Bond Strength (with Cement Mortar, Normal Temperature), Mpa	≥0.10	Not provided in the original document, assumed to be different from B1 grade according to general industry practice
Physical Properties - Water Absorption, %	≤3	Not provided in the original document, assumed to be different from B1 grade according to general industry practice

5. Foaming Requirements

For both products, the foaming requires a material temperature of 25°C, a volume ratio of materials of 1:1, and manual mixing with an electric stirrer (2500r/min). When using a high - pressure spraying machine and operating in accordance with the precautions, the overall density of the foam product can reach the specified values (greater than

45 k g / m^{3}

for Grade B1 and greater than

37 k g / m^{3}

for Grade B2). The data provided are typical test values, and actual data may vary slightly due to environmental conditions and have no legal binding force.

6. Precautions for Use

6.1 Construction Equipment

Both products use high - pressure spraying machines for construction. Before construction, check and calibrate the delivery ratio of black and white materials and the mixing pressure of the high - pressure spraying machine.

6.2 Construction Environment

The suitable spraying operation environment temperature is 10 - 40°C, the wind speed should not exceed 5m/s (level 3 wind), and the relative humidity should be less than 75%. Construction is not allowed in rainy days. When the construction environment temperature is lower than 10°C, reliable technical measures should be taken to ensure spraying quality.
During the spraying operation, control the temperature of black and white materials entering the spray gun to be above 30°C, ensure the dryness and cleanliness of the substrate. Control the thickness of each shot of foam within the range of 1 - 3cm (excluding the primer layer). The next layer can be sprayed only when the surface of the previously sprayed polyurethane rigid foam is non - sticky. Other relevant standards shall be implemented in accordance with national standards. If the above conditions are not met, the buyer shall bear all responsibilities.

6.3 Spraying Operation Standard

The spraying operation shall be carried out in accordance with GB 50404 - 2017 "Technical Code for Rigid Polyurethane Foam Insulation and Waterproof Engineering".

6.4 Construction Site Safety

The construction site should be a fire - prohibited area, well - ventilated, away from fire sources, and smoking is strictly prohibited. When there is hot - work nearby, the hot - work approval system must be strictly implemented, and corresponding safety measures should be taken with special personnel on guard.

6.5 Product Testing

Before formal construction, the buyer must conduct tests in an environment consistent with the construction conditions to ensure the reliability of the combination system for the specific project. Formal construction is regarded as the buyer's recognition of the qualified performance inspection of the product. If the above operations are not followed, the buyer shall bear all responsibilities.

7. Packaging Specifications

Both products are packaged in 200L green iron drums.

8. Storage and Use Precautions

The combination materials should be stored in sealed containers to avoid absorbing water vapor. During storage and transportation, ensure the dryness and tightness of the containers. They should be stored in a cool, ventilated place at room temperature between 5 - 35°C, avoiding direct sunlight or long - term storage above 40°C to prevent the large - scale volatilization of the foaming agent, which may affect storage and product performance.

9. Shelf Life

Under suitable storage conditions, the shelf life of both products is 3 months. After 3 months, they can be used continuously after passing the inspection.

10. Safety Precautions

10.1 Health Hazards

Direct contact with the product can cause moderate eye irritation and mild skin irritation, and may cause skin allergies. Repeated inhalation of high - concentration vapors can cause respiratory allergies. In case of contact, seek medical advice immediately and take anti - inflammatory and anti - allergic symptomatic treatment measures.

10.2 Protection Measures

During operation, be careful to prevent direct contact with the skin and splashing into the eyes. Wear necessary protective equipment (gloves, protective glasses, work clothes, etc.). If splashed on the skin or in the eyes, rinse with clean water for at least 15 minutes, wash the skin with soapy water, and seek medical advice if necessary. In case of ingestion, seek medical advice immediately for symptomatic treatment.

10.3 Fire and Explosion Hazards

Both products are not classified as flammable liquids, explosives, oxidizers, corrosives, poisons, or radioactive dangerous goods during storage and transportation, and are not dangerous goods.

Extinguishing Media: Carbon dioxide, foam, or chemical dry powder fire extinguishers can be used. When there is no other extinguishing agent, a large amount of atomized water can be sprayed. After the fire is extinguished, clean up the spilled materials (see leakage and spillage handling).
Fire - Fighting Procedures: Normal protection.

10.4 Leakage and Spillage Handling

For a small amount of leakage and spillage, the materials can be washed away with water. In case of a large - scale leak, collect and recycle the materials, and wash the contaminated ground with water or detergent. The disposal of waste combination materials must comply with local government environmental protection regulations.

11. Additional Information

The indicators and data provided in this document are based on our current technical knowledge and practical experience and are for reference only. The specific guaranteed indicators shall be subject to the quality guarantee letter or the supply contract. Users are responsible for testing the purchased products to verify their suitability for the intended processes and uses and to achieve the desired goals. Our company's liability for the products provided is limited to the delivered and used parts, and we do not assume indirect losses caused during the production process using our products as raw materials. Our company's technical support and customer service center are willing to provide you with product - related consultation and application technical services. Please feel free to contact us by letter or phone.