Polyurethane hard foam materials are widely used in construction, cold chain, automobile, home appliances and other fields due to their excellent thermal insulation performance, lightweight, high strength and good processing performance. However, the performance and productivity of rigid foam products depend heavily on the choice and use of catalysts. As a highly efficient catalyst, polyurethane hard foam catalyst PC-5 can significantly optimize the production process of rigid foam products. This article will introduce in detail how to use PC-5 to optimize each link from raw material selection to finished product inspection.
| parameter name | parameter value |
|---|---|
| Chemical Name | Polyurethane hard bubble catalyst PC-5 |
| Appearance | Colorless to light yellow liquid |
| Density (20°C) | 1.05 g/cm3 |
| Viscosity (25°C) | 50-100 mPa·s |
| Flashpoint | >100°C |
| Solution | Easy soluble in water and alcohols |
| Storage Conditions | Cool and dry places to avoid direct sunlight |
Polyols are one of the main raw materials for polyurethane rigid foam, and their choice directly affects the performance of the product. Commonly used polyols include polyether polyols and polyester polyols.
| Polyol Type | Features | Applicable scenarios |
|---|---|---|
| Polyether polyol | Low viscosity, high reactivity | Building insulation, cold chain |
| Polyester polyol | Good mechanical properties and high heat resistance | Car interior, home appliances |
Isocyanate is another main raw material for polyurethane rigid foam. Commonly used isocyanates include MDI (diphenylmethane diisocyanate) and TDI (diisocyanate).
| Isocyanate Type | Features | Applicable scenarios |
|---|---|---|
| MDI | High reaction activity and high foam strength | Building insulation, cold chain |
| TDI | Moderate reaction activity and good foam elasticity | Car interior, home appliances |
The selection of foaming agent has an important influence on the density and thermal insulation properties of foam products. Commonly used foaming agents include physical foaming agents and chemical foaming agents.
| Frothing agent type | Features | Applicable scenarios |
|---|---|---|
| Physical foaming agent | Environmentally friendly, high foaming efficiency | Building insulation, cold chain |
| Chemical foaming agent | Good foaming effect and low cost | Car interior, home appliances |
The selection of catalyst is crucial to the production process and product performance of polyurethane rigid foam. PC-5 as oneA highly efficient catalyst can significantly optimize the production process.
| Catalytic Type | Features | Applicable scenarios |
|---|---|---|
| PC-5 | High reaction activity and uniform foam structure | Building insulation, cold chain, automotive interior, home appliances |
Reasonable formula design is the basis for optimizing production processes. Here is an example of a typical polyurethane hard foam formula:
| Raw Materials | Proportion (%) |
|---|---|
| Polyol | 60-70 |
| Isocyanate | 30-40 |
| Frothing agent | 5-10 |
| Catalytic PC-5 | 0.5-1.5 |
| Other additives | 1-2 |
Mixing and foaming are key steps in the production of polyurethane rigid foam. The use of PC-5 catalyst can significantly improve mixing efficiency and foaming quality.
Temperature control has an important impact on the production process and product performance of polyurethane rigid foam. When using PC-5 catalyst, it is recommended to control the following temperature parameters:
| Process Stage | Temperature range (°C) |
|---|---|
| Raw Material Mix | 20-30 |
| Foaming Reaction | 30-50 |
| Cure | 50-80 |
Pressure control has an important influence on the density and structural uniformity of foam products. When using PC-5 catalyst, it is recommended to control the following pressure parameters:
| Process Stage | Pressure Range (MPa) |
|---|---|
| Raw Material Mix | 0.1-0.3 |
| Foaming Reaction | 0.2-0.5 |
| Cure | 0.1-0.3 |
Appearance inspection is the first step in finished product inspection, mainly checking the surface quality, color and size of the product.
| Inspection items | Standard Requirements |
|---|---|
| Surface Quality | No bubbles, cracks, depressions |
| Color | Alternative |
| Size | Meet the design requirements |
Density is an important indicator for measuring the performance of polyurethane hard foam products. Products produced using PC-5 catalysts should have a uniform density distribution.
| Inspection items | Standard Requirements (kg/m3) |
|---|---|
| Density | 30-50 |
Mechanical performance inspection includes indicators such as compressive strength, tensile strength and flexural strength.
| Inspection items | Standard Requirements (MPa) |
|---|---|
| Compressive Strength | 0.2-0.5 |
| Tension Strength | 0.1-0.3 |
| Bending Strength | 0.3-0.6 |
Thermal insulation performance is an important performance indicator of polyurethane rigid foam products. Products produced using PC-5 catalysts should have good thermal insulation properties.
| Inspection items | Standard Requirements (W/m·K) |
|---|---|
| Thermal conductivity | 0.02-0.03 |
Durability inspection includes indicators such as heat resistance, moisture resistance and aging resistance.
| Inspection items | Standard Requirements |
|---|---|
| Heat resistance | No deformation at 80°C |
| Wett resistance | No deformation under 95% RH |
| Aging resistance | No color change for 1000 hours |
By rationally selecting raw materials, optimizing production processes and strict finished product inspection, the use of polyurethane hard bubble catalyst PC-5 can significantly improve the performance and production efficiency of rigid foam products. PC-5 catalysts perform well in accelerating reactions, improving foam structure and improving production efficiency. They are suitable for building insulation, cold chain, automotive interiors and home appliances. I hope that the introduction of this article can provide reference and help for the optimization of production process in related industries.
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