Cured Epoxy Melting Point
Epoxy resin is not pure, such as bisphenol A epoxy resin is composed of homologous compounds with different degree of polymerization, so it has no clear melting point, only a melting temperature range, called softening point, to characterize its melting temperature. The softening point is a temperature range. For example, the softening point can range from 58 degrees to 93 degrees due to different composition and content. Epoxy phenolic semi-solid with high viscosity, average functionality 2.5-6.0, softening point less than 28 degrees; Triphenol-based methane triglycidyl ether epoxy resin is a red solid with softening point 72-78 ℃. Some crystalline epoxy resins, with high purity, can also be called melting point, such as 140 ℃.
- June 5, 2019Methyl tetrahydrophthalic anhydride, also known as methyl tetrahydrophthalic anhydride, referred to as MeTHPA, which is a liquid mixture of various isomers that are initially isomerized. Molecular wei...view
- June 5, 2019First, Phthalic acid (PA)Phthalic anhydride is a traditional curing agent, which is still used in a large amount up to now, which is mainly used in the casting of electrical appliances. Phthalic anhyd...view
- March 16, 2020The reaction of acid anhydride curing epoxy resin requires a small amount of alcohol and water, free acid and other accelerators in the resin / anhydride system, which can be slowly cured by heating. ...view
- June 5, 2019Curing agent refers to a kind of substance which can transform soluble and meltable linear structure polymer compound into insoluble body structure. The acid anhydride curing agent is an important kin...view
- June 5, 2019The curing agent of epoxy resin has the chemical reaction with epoxy resin to form a reticulated stereopolymer, which envelops the composite material in the reticulate. A solid additive makes linear r...view
- June 5, 2019The curing reaction mechanism of anhydrides can be divided into two forms according to the presence or absence of accelerators.1. In the absence of accelerants, the hydroxyl group in epoxy resin react...view