What is resin curing and the factors affecting it

Resin curing in epoxy production

Epoxy resins bind metals to metals, wood, plastics and other materials. While epoxy is durable in most everyday conditions, degradation of its polymer matrix can occur due to high heat associated with moisture.

Epoxy resins with a rod structure can withstand excessive temperatures compared to those with flexible structures. Carbon fiber reinforced epoxy composites can withstand significant temperatures up to 1500 ° C, which is very valuable for aircraft components.

Resin chemistry, including epoxies, phenolics and eruptions, has been widely used in various applications in the manufacture, completion and production of various products. This broad class of thermal polymers is physically known as free-flowing polymer solutions that can be irreversibly adjusted to hard solids.

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These types of resins are designed for good integration, and resin curing can improve the properties of conventional resins such as high adhesion, resistance to many corrosive chemicals, mechanical properties, low viscosity in the liquid state, and flexibility. excuseme. During the resin curing process, a polymer with a strong cross structure, also called a thermoset, will be formed.

Polymers generally have low thermal conductivity. Especially in the case of thick-walled components, this feature leads to a heterogeneous temperature distribution. This increases the risk of polymer degradation. For example, it reduces their resistance, increases their porosity, or even causes them to ignite. In addition, the cross-curing reaction of epoxy resins is associated with volumetric shrinkage of the material. This sometimes causes strong mechanical stresses in the material, which can lead to breakdown of the part before loading on the product. Resin curing will help eliminate these defects in polymers.

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