Epoxy Definition and 19 Threads

Homework Statement This is the problem. A pair of eyeglass frames is made of epoxy plastic. At room temperature (20.0°C), the frames have circular lens holes 2.20 cm in radius. To what temperature must the frames be heated if lenses 2.21 cm in radius are to be inserted in them? The average...

Hello, I'm currently doing research for my thesis about non halogen fire retardant composite. One of the main result is deviate and confusing because: There is no fire retardancy's effect of Magnesium Hydroxide addition to resin epoxy. Why?Any suggestions? Thanks

how is ordinary epoxy (A + B) adhesive differed to steel epoxy (A + B) adhesive in so far as steel is concerned?

I have a powder dry-bend mixed from polyester epoxy resin, fillers, pigment, other additives... I'm seeking for a method to analyze percentage weight of polyester epoxy content in this powder. So, could you prove an appropriate method to do it? Thanks

I want to build high voltage feedthroughs (vacuum) from epoxying pieces of alumina together, and then epoxying alumina strips on the outside to cover the spaces between. Can I use JB weld, as far as things go electrically? People have reported that JB weld is unexpectedly wonderful for vacuum...

Hi guys, I recently got my hands dirty renovating my house. Learned a lot. I want to fix a floor in one room, want to try epoxy resin for this. Surprisingly, googling was less than satisfactory. Yes, I got it, many epoxy resins are wonderful and there are gazillions of them. That's not...

Hi, I was tasked to design a composite material that will undergo a 3 point bending test. Maximum deflection will be of 15mm and a maximum load of 5kN. The scope of this task is not to prevent failure but to analyse the composite and learn from the design process. Nonetheless the composite...

Hi, I am trying to design a tubular probe that's made of stainless steel (304), from what I've read it has a Thermal expansion coefficient of around 9.6 x10^-6 in/in/F give or take on the quality. I want to fill this tube halfway with an Epoxy, however from what I've read this epoxy has a...

Dear all Kindly anyone suggest me any Process in which catalytic Agent provides -OH or -O (Epoxy) and then after forming Product takes back -OH or -O. We have to consider only these functional groups -OH or -O. Thanks in Advance.

What is the conductivity of epoxy when dry? Also is there any expansion or contraction when epoxy cure? That is if you fill epoxy in a gap, would it pull or push the two side when dry? Thanks

A camshaft journal bearing was damaged due to oil starvation. after camshaft is replaced. Using a proper epoxy resin to fill in the damaged / pitted journal surface then honing the journal back to the standard size. After that adding groves or small pits that would work as oil pockets...

I'm currently in an advanced laboratory for physics majors, and I'm conducting a pulsed NMR experiment. My partner and I decided that we we're going to measure the T1 and T2 times of Epoxy. The idea is to explore the relationship between curing epoxy and changing T1 and T2 times. We have results...

Any have good results by mixing iron powder and epoxy, purpose is to create an armature for a generator.

Qn:Why do bubbles like this form? -My guess is that intially air trapped in the liquid before cure expands in all direction(to maintain equal pressure) during curing, as curing shrinks the epoxy, causing bubbles to form. (Or is it the heat which expands it?) Microscope picture of bubble...

Hi, I am currently doing a scientific research regarding epoxy adhesive. Basically, you shine UV light onto the adhesive, it hardens. Im given certain parameters like, intensity of UV light and duration of exposure. I am supposed to investigate effects of varying parameters on...

Hi I'm looking for a super glue/epoxy that meets the following requirements: 1) when hardens is very very strong and durable and very resistance to abuse either mechanically or chemically etc 2) needs to be electrically inert, meaning that it should not be conductive or affect electronic...

Can anyone give me a quick comare/contrast of Epoxy and Polyester Resins? and what application they are better for? thanks

I am starting to learn how to make carbon fiber products i am not sure about what type of resin/epoxy? to use does the resin/epoxy give it that nice exterior? or is something else needed? any suggestions in general would be much appreciated thank you

Dear Fellow scientists, I have a small but important problem: I need to know the absorption wavelength of epoxy groups. To be more precise, these epoxy groups are bound to an agarose affinity resin via a -((CH)2)12- Spacer. Does anybody know a particular reference or chemistry book I should...