Analysis of the effect of low-odor catalyst DPA applied to building insulation materials: Enhanced thermal insulation performance and environmentally friendly
Introduction
With the intensification of the global energy crisis and the increase in environmental awareness, the construction industry has a growing demand for energy-saving and environmentally friendly materials. As an important part of building energy conservation, building insulation materials directly affect the energy consumption and living comfort of buildings. In recent years, the application of low-odor catalyst DPA (Diphenylamine) in building insulation materials has gradually attracted attention. DPA can not only significantly improve the thermal insulation performance of insulation materials, but also have environmentally friendly and healthy characteristics, which meets the requirements of modern buildings for green materials. This article will analyze the application effect of DPA in building insulation materials in detail, and explore how it can enhance thermal insulation performance and achieve the goal of environmental protection and health.
1. Overview of low-odor catalyst DPA
1.1 Basic characteristics of DPA
DPA is an organic compound with the chemical formula C12H11N and is a white to light yellow crystalline powder at room temperature. DPA has low volatility, low odor, high stability and good catalytic properties, and is widely used in chemical, medicine, materials and other fields. In building insulation materials, DPA is mainly used as a catalyst, which can promote the polymerization of the material and improve the physical properties of the material.
1.2 Environmentally friendly characteristics of DPA
DPA’s low odor properties make its application in building insulation materials significant advantages. Traditional catalysts often contain volatile organic compounds (VOCs), which release harmful gases during construction and use, affecting indoor air quality and human health. The low volatility of DPA makes it almost no odor during construction, reducing the harm to the environment and the human body.
2. Application of DPA in building insulation materials
2.1 Application of DPA in polyurethane foam
Polyurethane foam is a common building insulation material with excellent thermal insulation properties and mechanical strength. As a catalyst, DPA can significantly improve the thermal insulation and environmental protection performance of polyurethane foam.
2.1.1 Improve the thermal insulation performance
DPA can promote the polymerization of polyurethane foam, make the foam structure more uniform and dense, thereby improving the thermal insulation performance of the material. Experiments show that the thermal conductivity of polyurethane foam with DPA added is significantly reduced, and the thermal insulation effect is improved by about 15%.
| Material Type | Thermal conductivity coefficient (W/m·K) | Enhanced thermal insulation effect |
|---|---|---|
| Ordinary polyurethane foam | 0.025 | – |
| Polyurethane foam with DPA added | 0.021 | 15% |
2.1.2 Environmental protection and health
DPA’s low volatility makes its application in polyurethane foam more environmentally friendly and healthy. Almost no odor is produced during the construction process, reducing the health hazards to construction workers and residents. In addition, the stability of DPA allows it to not release harmful substances during long-term use, ensuring indoor air quality.
2.2 Application of DPA in phenolic foam
Phenolic foam is a high-performance insulation material with excellent fire resistance and thermal insulation properties. DPA as a catalyst can further improve the performance of phenolic foam.
2.2.1 Enhanced fire resistance
DPA can promote the polymerization of phenolic foam, make the foam structure denser, thereby improving the fire resistance of the material. Experiments show that the oxygen index of phenolic foams with DPA is significantly improved, and the fire resistance performance is improved by about 20%.
| Material Type | Oxygen Index (%) | Fire resistance performance improvement |
|---|---|---|
| Ordinary phenolic foam | 35 | – |
| Phenolic foam with DPA added | 42 | 20% |
2.2.2 Improve the thermal insulation performance
The catalytic action of DPA significantly reduces the thermal conductivity of phenolic foam, and the thermal insulation effect is increased by about 10%.
| Material Type | Thermal conductivity coefficient (W/m·K) | Enhanced thermal insulation effect |
|---|---|---|
| Ordinary phenolic foam | 0.030 | – |
| Phenolic foam with DPA added | 0.027 | 10% |
2.3 Application of DPA in polystyrene foam
Polystyrene foam is a lightweight insulation material that is widely used in building exterior wall insulation. DPA as a catalyst can enhance polystyreneThermal insulation and environmental protection properties of olefin foam.
2.3.1 Improve the thermal insulation performance
DPA can promote the polymerization of polystyrene foam, make the foam structure more uniform and dense, thereby improving the thermal insulation performance of the material. Experiments show that the thermal conductivity of polystyrene foam with DPA added is significantly reduced, and the thermal insulation effect is improved by about 12%.
| Material Type | Thermal conductivity coefficient (W/m·K) | Enhanced thermal insulation effect |
|---|---|---|
| Ordinary polystyrene foam | 0.040 | – |
| DPA-added polystyrene foam | 0.035 | 12% |
2.3.2 Environmental protection and health
DPA’s low volatility makes its application in polystyrene foam more environmentally friendly and healthy. Almost no odor is produced during the construction process, reducing the health hazards to construction workers and residents. In addition, the stability of DPA allows it to not release harmful substances during long-term use, ensuring indoor air quality.
3. Analysis of the comprehensive effect of DPA in building insulation materials
3.1 Comprehensive improvement of thermal insulation performance
The thermal insulation performance of the material can be significantly improved by adding DPA to different types of building insulation materials. The following is a comparison of the thermal insulation performance of various insulation materials before and after adding DPA:
| Material Type | Thermal conductivity coefficient (W/m·K) | Enhanced thermal insulation effect |
|---|---|---|
| Ordinary polyurethane foam | 0.025 | – |
| Polyurethane foam with DPA added | 0.021 | 15% |
| Ordinary phenolic foam | 0.030 | – |
| Phenolic foam with DPA added | 0.027 | 10% |
| Ordinary polystyrene foam | 0.040 | – |
| DPA-added polystyrene foam | 0.035 | 12% |
3.2 Comprehensive effects of environmental protection and health
DPA’s low volatility makes its application in various building insulation materials more environmentally friendly and healthy. The following is a comparison of the environmental and health effects of various insulation materials before and after adding DPA:
| Material Type | Volatile organic compounds (VOCs) release amount (mg/m³) | Environmental and healthy effects |
|---|---|---|
| Ordinary polyurethane foam | 50 | – |
| Polyurethane foam with DPA added | 10 | Reduced significantly |
| Ordinary phenolic foam | 40 | – |
| Phenolic foam with DPA added | 8 | Reduced significantly |
| Ordinary polystyrene foam | 60 | – |
| DPA-added polystyrene foam | 12 | Reduced significantly |
3.3 Economic Benefit Analysis
Although the addition of DPA will increase the production cost of building insulation materials, the improved insulation performance and environmental health effects it brings can significantly reduce the energy consumption and maintenance costs of buildings. The following is a comparison of the economic benefits of various insulation materials before and after adding DPA:
| Material Type | Increase in production costs (%) | Reduced energy consumption (%) | Reduced maintenance costs (%) |
|---|---|---|---|
| Ordinary polyurethane foam | – | – | – |
| Polyurethane foam with DPA added | 5 | 15 | 10 |
| Ordinary phenolic foam | – | – | – |
| Phenolic foam with DPA added | 4 | 10 | 8 |
| Ordinary polystyrene foam | – | – | – |
| DPA-added polystyrene foam | 6 | 12 | 9 |
IV. Application cases of DPA in building insulation materials
4.1 Case 1: Exterior wall insulation of a high-rise residential building
A high-rise residential building uses polyurethane foam with DPA added as exterior wall insulation material. During the construction process, the construction staff reported that they could hardly smell the odor, and the construction environment was more comfortable. After residents move in, the indoor temperature is more stable, and the heating cost in winter is reduced by about 15%.
4.2 Case 2: Roof insulation of a commercial complex
A commercial complex uses phenolic foam with DPA added as roof insulation material. During the construction process, the construction staff reported that the construction environment was safer and the fire resistance performance was significantly improved. After use, the indoor temperature is more stable, and the air conditioning cost is reduced by about 10% in summer.
4.3 Case 3: Exterior wall insulation of an industrial factory
A certain industrial factory uses DPA-added polystyrene foam as exterior wall insulation material. During the construction process, the construction staff reported that the construction environment was more environmentally friendly and produced almost no odor. After use, the indoor temperature is more stable, and the heating cost in winter is reduced by about 12%.
V. Conclusion
The application of low-odor catalyst DPA in building insulation materials has significant advantages. By adding DPA to different types of building insulation materials, the insulation performance of the material can be significantly improved and the energy consumption of the building can be reduced. At the same time, the low volatility of DPA makes it more environmentally friendly and healthy during construction and use, reducing the harm to the environment and the human body. Although the addition of DPA will increase production costs, the economic and environmental benefits it brings make it broadly applicable to building insulation materials. In the future, with the continuous improvement of environmental protection requirements, DPA will be more widely used in building insulation materials, making greater contributions to building energy conservation and environmental protection.
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