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Polyurethane Spray Blend Polyols
VS-3 is spray blend polyols, blowing agent is 245fa instead of HCFC-141B, it reacts with isocyanate to produce foam which has excellent performances, which are as follows,1) Fine and uniformity cells
2) Low thermal conductivity
3) Perfect flame resistance
4) Good low temperature dimensional stability.
It applies to all kinds of thermal insulation engineering which uses the spray technology, such as cold rooms, pots, large-scale pipelines etc.Physical Properties
| Appearance Hydroxyl Value mgKOH/g Dynamic Viscosity (25 ºC) mpa.s Specific gravity (20 ºC ) g/ml Storage Temperature ºC Storage Stability month | Pale yellow to brown viscous liquid 200-300 100-200 1.12-1.20 10-25 6 |
| pbw | |
| Vspray-3 blend polyols Isocyanate | 100 100-105 |
(The temperature of the system is 20ºC,and the exact value varied depending on processing condition)
| Cream Time s Gel Time s | 3-5 6-10 |
| Items | Test Method | Index |
| Spray Density Closed-cell Rate Initial Thermal Conductivity(15ºC) Compressive Strength Adhesive Strength Elongation at break Dimentional Stability 24h -20ºC 24h 70ºC Water Absorption Oxygen Index | GB 6343 GB 10799 GB 3399 GB/T8813 GB/T16777 GB/T9641 GB/T8811 GB 8810 GB 8624 | 30-40kg/m3 ≥90% ≤24mW/(m.K) ≥150kPa ≥120kPa ≥10% ≤1% ≤1.5% ≤3% ≥26 |
1. Insulation
Building Insulation
Widely used in the insulation of building walls, roofs, and floors. When sprayed, they react with isocyanates to form a rigid polyurethane foam with low thermal
conductivity, which can effectively reduce heat transfer and energy consumption for heating and cooling.
2. Sound - Proofing
Automotive Industry: In cars, PU spray - blend polyols are applied to the interior parts such as the floor, firewall, and door panels. The sprayed foam can absorb and
dampen sound waves, reducing engine noise, road noise, and external noise, thus creating a quieter and more comfortable driving environment.
Building Interior: In buildings, especially in areas where sound - proofing is required, such as recording studios, theaters, and conference rooms, PU spray - blend
polyols can be used on walls and ceilings. The foam helps to block sound transmission between different spaces and reduce reverberation within the room.
3. Structural reinforcement
Composite Materials: PU spray - blend polyols can be used in the production of composite materials. When sprayed onto fiberglass or other reinforcing materials, they
form a strong and lightweight composite structure. This is widely used in the aerospace, marine, and wind - energy industries.
Building repair and reinforcement: In building construction and repair, PU spray - blend polyols can be used to reinforce damaged or weak structures. For example,
spraying the polyols on cracked concrete walls or columns can fill the cracks and form a strong bonding layer, enhancing the structural integrity of the building.
4. Decorative applications
Art and Sculpture: PU spray - blend polyols can be used in the creation of artworks and sculptures. The sprayed foam can be shaped and carved easily, and then
painted or treated with other surface - finishing techniques to create unique decorative pieces.
Interior decoration: In interior decoration, PU spray - blend polyols can be used to create decorative moldings, cornices, and wall panels. The sprayed foam can be
formed into various shapes and patterns, providing an alternative to traditional plaster or wood - based decorative elements.
