How to improve the abrasion resistance of acrylic resin?

Improving the wear resistance of acrylic resin materials can be started from the following aspects:

Adjust resin formula

Increasing the dosage of cross-linking agent: increasing the amount of cross-linking agent can form more cross-linking bonds between resin molecular chains, improve the compactness of network structure, and thus enhance the hardness and wear resistance of materials. For example, when preparing acrylic resin coatings, reasonably increasing the amount of isocyanate crosslinking agent can improve the wear resistance of the coatings.

Introduction of wear-resistant monomers: monomers containing wear-resistant groups, such as fluorine-containing monomers and silicon-containing monomers, are added in resin synthesis. Fluorine-containing monomer can reduce the surface energy and friction coefficient of materials; Silicon-containing monomer can improve the hardness and flexibility of materials, both of which are helpful to enhance wear resistance. The abrasion resistance of acrylic resin can be significantly improved by introducing fluorine-containing monomers such as trifluoroethyl methacrylate.

Adjust the monomer ratio: change the ratio of different monomers to optimize the molecular structure of the resin. For example, increasing the proportion of rigid monomers such as styrene can improve the hardness and wear resistance of the resin, but attention should be paid to balancing rigidity and flexibility to prevent the material from becoming brittle.

Adding functional filler

Inorganic fillers: inorganic fillers such as silica, alumina and silicon carbide are added. These fillers have high hardness and good wear resistance, which can effectively improve the wear resistance of acrylic resin. For example, adding nano-silica to acrylic resin can significantly improve its wear resistance and improve the scratch resistance of the material.

Fiber filler: glass fiber, carbon fiber, aramid fiber and other fiber fillers are added. Fiber filler can enhance the mechanical properties of resin and improve its wear resistance. Taking glass fiber as an example, dispersing it evenly in acrylic resin can effectively improve the wear resistance of the material, especially suitable for engineering plastics with high wear resistance requirements.

Optimize processing technology

Increasing the curing temperature and time: appropriately increasing the curing temperature and prolonging the curing time can make the resin cure more completely, improve the crosslinking degree, and then enhance the wear resistance. However, it is necessary to control the temperature and time to avoid the degradation of material properties. If the curing temperature is increased from 60℃ to 80℃ and the curing time is extended to 24 hours, the wear resistance of the coating can be obviously improved.

Surface treatment technology is adopted: the surface of acrylic resin material is treated, such as plasma treatment and ultraviolet radiation treatment. These treatments can improve the hardness and roughness of the material surface and increase the wear resistance. For example, a compact oxide layer can be formed on the surface of acrylic resin film by plasma treatment, which can improve the wear resistance.

Carry out modification treatment

Nano-modification: acrylic resin is modified by nano-technology, such as adding nano-particles and preparing nano-composite materials. Nanoparticles have unique small size effect and surface effect, which can significantly improve the mechanical properties and wear resistance of resin. For example, the preparation of acrylic resin/nano-zinc oxide composites can greatly improve the wear resistance of the resin and also have certain antibacterial properties.

Blending modification: acrylic resin is blended with other polymers with good wear resistance, such as polyurethane and polyamide. Blending can combine the performance advantages of the two polymers and improve the wear resistance of acrylic resin. For example, after blending acrylic resin with polyurethane, the wear resistance and flexibility of the material are improved, which is suitable for manufacturing elastic materials with high wear resistance requirements.