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Learn about the various applications of furan resin in road construction.
Release date:
2023-04-30 16:20
Source:
As living standards continue to rise, furan resin has become an indispensable part of our daily lives. But why do people choose to use furan resin? Let’s join Tongshuo Casting’s editor to explore the various applications of furan resin in everyday life.
The mixture of furan resin and crushed stone can be laid without heating, even at room temperature or as low as -20°C, making it ideal for rapid road repairs.
The coefficient of thermal expansion for furan resin pavement after curing is virtually negligible, making it particularly suitable for steel bridge deck paving. Since asphalt pavements have relatively low compressive and tensile strengths, prolonged heavy loads can cause the asphalt to bulge outward on either side of the steel bridge, potentially damaging the structure. Furan resin pavement, however, effectively addresses this issue.
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Furan resins are polymers synthesized from raw materials such as furfuryl alcohol and furfural, which contain a characteristic furan ring. Under the action of strong acids, these resins undergo curing to form insoluble, non-melting solid materials. Common types include furfuryl alcohol resin, furfural resin, and furanone resin. Due to the presence of stable furan rings in their molecular structure, furan resins exhibit exceptional resistance to acids, alkalis, and solvents. In recent years, the emergence of numerous novel furan resin formulations has significantly expanded their application scope. In industries such as wood processing, rubber manufacturing, metalworking, and ceramics, furan resins are widely used as binders. Additionally, they play a crucial role in the machinery industry, particularly as sand-core binders in casting processes. At room temperature, when combined with a specific organic acidic curing agent and thoroughly mixed with casting sand, furan resin-based self-hardening sand can harden on its own, leading to substantial improvements in the quality of cast components—especially within the machine tool sector.
What should be noted when using furan resin?
Furan resin is a commonly used agricultural machinery component known for its outstanding corrosion resistance, heat tolerance, and the fact that its raw materials are widely available and the production process is relatively simple—features that have consistently earned it high praise from consumers. So, are you familiar with furan resin? And when using it, what precautions should you keep in mind? Let’s talk about that today. It is strictly forbidden to mix furan resin directly with its curing agent, as this could lead to an explosive reaction. Additionally, if furan resin comes into contact with skin, users may experience mild irritation. In such cases, it’s essential to rinse thoroughly with plenty of water.
P-Toluenesulfonic acid reacts with bases as an organic acid, undergoing a neutralization reaction with alkaline substances. The reaction can be represented by the following equation: CH3-C6H4-SO3H + R-OH → CH3-C6H4-SO3R + H2O P-Toluenesulfonic acid is a strong, non-oxidizing organic acid—its acidity is about one million times greater than that of benzoic acid. It appears as white needle-like or powdery crystals, which are highly hygroscopic and readily dissolve in water, alcohols, and other polar solvents. When exposed to materials like paper or wood, it can cause dehydration, leading to carbonization.
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