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Hardeners which show only low or limited reactivity at ambient temperature, but which react with epoxy resins at elevated temperature are referred to as latent hardeners. When using latent hardeners, the epoxy resin and hardener may be mixed and stored for some time prior to use, which is advantageous for many industrial processes.
4,4'-Diaminodicyclohexylmethane is the name for organic compounds with the formula CH 2 (C 6 H 10 NH 2) 2.It is classified as a diamine.In the epoxy industry it is often referred to as PACM, short for para-diaminodicyclohexylmethane.
As an epoxy modifier it is classed as an epoxy reactive diluent. [10] It is one of a family of glycidyl ethers available used for viscosity reduction of epoxy resins. [11] [12] These are then further formulated into coatings, sealants, adhesives, and elastomers. [13] [14] Resins with this diluent tend to show improved workability. [15]
As an epoxy modifier it is classed as an epoxy reactive diluent. [8] It is one of a family of glycidyl ethers available used for viscosity reduction of epoxy resins. [9] These are then further formulated into coatings, sealants, adhesives, and elastomers. [10] [11] Resins with this diluent tend to show improved workability. [12]
Epoxy resins are typically cured by the use of additives, often called hardeners. Polyamines are often used. The amine groups ring-open the epoxide rings. In rubber, the curing is also induced by the addition of a crosslinker. The resulting process is called sulfur vulcanization.
You only want to do this once. There are basically three types of paints: latex, water-based acrylic, and pre-mixed one-part epoxy. ... Two-part epoxies require that you mix a separate hardener ...
[6] [7] Lower quantities are used as hardeners in epoxy resins and adhesives, as well as in the production of high-performance polymers. [3] Additionally, hydrogenation of MDA can be performed to produce 4,4,diaminodicyclohexylmethane, which is also used in polymer chemistry. [8]
It is primarily used as a curing agent or hardener in epoxy chemistry. This can be on its own or reacted with tall oil fatty acid (TOFA) and its dimer to make an amidoamine. [2] This amidoamine is then used as the curing agent for epoxy resin systems. TEPA is a pentadentate ligand in coordination chemistry.
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