Epoxy resins, sometimes called polyiodides, are a group of reactive prepolymers and polymers which contain at least one epoxide group. The resins can be reacted (cross linked) either with themselves through catalytic homopolymerisation, or with a wide range of co-reactants having polypractical amines, acids and acid anhydrides, phenols, alcohols and thiols. The co-reactant is often … Continued

Epoxies shows some differences from polyester resins in that they are cured by a ‘hardener’ rather than a catalyst. The hardener, often an amine, is applied to cure the epoxy by an ‘addition reaction’ where both materials take place in the chemical reaction. The chemistry of this reaction means that there are usually two epoxy … Continued

Usually identifiable by their characteristic amber or brown coloring, epoxy resins have a number of useful properties. Both the liquid resin and the curing agents form low viscosity easily processed systems. Epoxy resins are easily and quickly cured at any temperature from 5°C to 150°C, depending on the choice of curing agent. One of the … Continued

As mentioned above, Epoxy thermosetting composites are high-performance elements with significant industrial uses. However, recycling of thermosets and their filling matters are challenging. However, significant research and development possess been done to enable recycling of thermosets, thus allowing the plastics to be broken down and reformed. There are some new developments in epoxy thermosets which … Continued

Epoxy resins are of particular interest in structural composite uses as they provide: Special balance of chemical and mechanical properties As well as extreme processing versatility Some of their most interesting applications are found in the aerospace and recreation industries where resins and fibers are mixed to make complex composites structures. Epoxy resins satisfy a … Continued

  Epoxy Polyester Extremely powerful and great flexural Strength The hardener and the temperature determine epoxy resin cure time Resistant to wear, cracking, peeling, corrosion and harm from chemical and environmental degradation Possess a bonding strength of up to 2,000 psi Epoxy is moisture resistant after curing Brittle and prone to micro-cracking Generally, costs slightly … Continued

They are added to epoxy resins to incorporate FR characteristics. The presence of halogens and char-forming aromatics in the epoxy-curative based resin decreases flammability. Colors and Dyes A wide variety of colorants can be used with epoxies such as inorganic pigments except chrome greens, natural siennas, zinc sulfide white etc. and organic pigments such as … Continued

They are applied to increase the fracture toughness of epoxy resins. Only relatively low MW TPs can be dissolved in epoxy resins. Commonly used thermoplastics are phenoxy, polyether block amides, PVB, polysulfone, polyethersulfone, polyimide, polyetherimide, nylon. As compared to rubbers, thermoplastics are more effective tougheneres in highly cross-linked matrices and they do not tend to … Continued

, some of the crucial elements to be taken into account include: Volume fraction of filler Particle characteristics (size, share, surface area…) Filler aspect ratio Strength and modulus of filler Adhesion of filler to the resin Viscosity of the base resin Toughness of the base rein Nanoparticle-reinforced epoxy composites have also generated considerable industrial interest … Continued

Fillers also play a crucial role in epoxy resin formulations. Reinforcing fibers such as glass, graphite and polyaramid improve mechanical properties to such an extent that epoxies can be used in many structural uses. Other non-reinforcing fillers include: Powdered metals to improve electrical and thermal conductivity Alumina for thermal conductivity Silica for cost reduction, and … Continued