What is epoxy equivalent?
One equivalent epoxy weighs 150 g. One equivalent amine weighs 30 g. The mix ratio by weight is 150 g epoxy per 30 g amine. It is common in the resin industry for a mix ratio to be specified as 20 phr. The term ‘phr’ means per hundred resin or 20 parts by weight amine per 100 parts by weight of resin.
What is epoxide equivalent weight?
The epoxide equivalent weight (abbreviation EEW , English Epoxy Equivalent Weight ) is a measure of compounds which epoxy containing groups. The epoxy equivalent weight describes the mass in grams which one mole of epoxy groups contains.
What are the units of epoxy equivalent weight?
Chemistry, Formulation, and Properties of Adhesives Epoxy resins are characterized by their epoxy-equivalent weights (EEW), that is, the weight of resin per epoxy group. Thus, DGEBA, which has a molecular weight of 340 grams and two epoxy groups, would have an epoxy equivalent weight of 170 grams.
How is epoxy equivalent weight calculated?
The phr (parts by weight per 100 parts of epoxy resin mixture) of the ECI Polyamine can be determined with the following equation: Equation 2: phr = A.E.W. x 100 Resin E.E.W.
What can replace epoxy resin?
Hard plaster and concrete are excellent epoxy resin alternatives, and their use is not limited to small surfaces only. Unlike epoxy resin, concrete and plaster can be easily applied to large surfaces as well. Other great alternatives to epoxy resin include slush latex, metal, plastic, and alabaster.
How do you calculate epoxy value?
For a round surface, you will need to measure the diameter. Divide the diameter by 2 to calculate the radius. To calculate volume in cubic inches: (radius squared) X pi (or, 3.14159265) x (desired epoxy coating thickness). Divide by 1.805 to convert cubic inch volume to US fluid ounces.
How do you calculate weight mix ratio?
Divide the number of weight parts by the respective density: This yields a volumetric mix ratio of 8.33 : 0.98, which can then be normalized to a more convenient ratio. To create a ratio in the form of 100:b, divide the volume parts of Part B by the volume parts of Part A and multiply the result by 100.
How do you calculate resin ratio?
To calculate the amount you will need, in metric, you will need work out the size of the volume you wish to fill, convert that to the capacity and finally convert to the required weight: Total Weight = (Width x Height x Depth) / 1000 divide by a thousand when mesuring in millimeters.
How do I calculate how much resin I need?
What’s the difference between epoxy and epoxy resin?
When it comes to forming strong bonds, both epoxy and resin glue can be strong, but epoxy is stronger. The main difference between both adhesive types is the drying time. Both epoxy and resin adhesives require mixing before use, but epoxy hardens much faster than resin glue.
What is the equivalent of epoxide in grams?
Epoxide content is commonly expressed as the epoxide equivalent weight (EEW). The EEW is defined as the weight in grams of an epoxy resin containing one mole. equivalent of epoxide (g/mol), i.e., one gram-equivalent of epoxy.
How is the epoxide equivalent weight ( EEW ) calculated?
The epoxide equivalent weight (EEW) is the weight of resin. in grams which contains one gram-equivalent of epoxy. In. general, if any epoxy group terminates each end of a resin, then the EEW is one-half the average molecular weight of a. Click to see full answer In this regard, how is epoxy equivalent weight calculated?
What is the weight of an epoxy equivalent resin?
The epoxide equivalent weight (EEW) is the weight of resin. in grams which contains one gram-equivalent of epoxy. In. general, if any epoxy group terminates each end of a resin, then the EEW is one-half the average molecular weight of a. How is epoxy amine ratio calculated?
What happens to epoxide content in a resin?
As the molecular weight of the resin increases, the epoxide content reduces and the material behaves more and more like a thermoplastic.