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A package of J-B Weld, showing "hardener" (red tube) and "steel" (black tube of resin): equal amounts are squeezed from both tubes and mixed. The J-B Weld Company is an international company that produces epoxy products. The home office is based in Sulphur Springs, Texas. [1]
Araldite epoxy resin is commonly used as an embedding medium for electron microscopy. [9] Some Flamenco guitarists (e.g. Paco Peña) use it to reinforce their fingernails. [10] Brian May used it to seal some of the pickups in his homemade Red Special guitar to reduce microphonic feedback. [11]
CarComplaints.com was featured in a December 2014 Lifehacker article, Five Best Car Comparison Sites, [5] and also mentioned in several New York Times articles from 2013 to 2015: Ford Windstar Minivans Recalled for a Second Time, [6] Chrysler Owners Sound Off on a Power Defect [7] and Ram Dashboards Cracking.
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. Very latent hardeners enable one-component (1K) products to be produced, whereby the resin and hardener are supplied pre-mixed to the end user and only require heat to initiate curing.
Driving.co.uk ranked it #14 on their list of the 23 ugliest cars ever made, [136] Auto Express ranked it #5 on their list of the ten ugliest cars ever made, [137] and Drive.com.au included in their article on the worst cars of the 20th century, calling it "one of the silliest-looking cars of the century".
The epoxy value is defined as the number of moles of epoxy group per 100g resin. So as an example using an epoxy resin with molar mass of 382 and that has 2 moles of epoxy groups per mole of resin, the EEW = 382/2 = 191, and the epoxy value is calculated as follows: 100/191 = 0.53 (i.e. the epoxy value of the resin is 0.53). [6]
A very good way is the use of piston metering heads. The ratio of resin to hardener can be determined exactly by the ratio of the width of two separate pistons, one for resin, one for hardener, where both pistons are pushed simultaneously. The amount is determined by a common stopper, limiting the stroke of both pistons equally.
Some are thermosetting plastics in which the term "resin" is loosely applied to the reactant(s), the product, or both. "Resin" may be applied to one of two monomers in a copolymer, the other being called a "hardener", as in epoxy resins. For thermosetting plastics that require only one monomer, the monomer compound is the "resin".