Technology

Why is it important to have uniform wall thickness? How can you change a part design with an ...

Started by anshika

Your mold is filling completely, but you have weld-lines in your part. Give three possible parameter ...

Started by abern

What is meant by cryogenic flash removal? What other methods are used in removing flash? What ...

Started by dejastew

Based on the chemical structures and make-ups of polyurethane and polystyrene, how would the flame ...

Started by jazziefee

Discuss why a polymer can be tough but not strong. Give examples of real plastics that illustrate ...

Started by Jkov05

What kind of tests would you perform on a polymer sample in order to verify that it is suitable for ...

Started by naturalchemist

List five methods of disposing of municipal solid wastes. What will be an ideal ...

Started by cool

Chemically speaking, how can you raise the HDT of a polymer? (i.e. additives, processing, etc.) ...

Started by yoroshambo

What is the chief economic disadvantage of recycling plastics? What will be an ideal ...

Started by fox

Why are most plastics actually beneficial in a landfill? What will be an ideal ...

Started by ap345

Based on these properties, what are five materials (not grades of the same material) that could be ...

Started by ETearle

At ACME, you have been asked to specify the material and process for a new part. You favor pre-preg ...

Started by Yi-Chen

In what direction is composite material strongest. Explain, on a microstructural basis, why this is ...

Started by dollx

What process parameters affect the part quality the most? Discuss 2 or 3 of these parameters and ...

Started by Bernana

You have noticed that when removed from the mold, your football tends to collapse on one side. Give ...

Started by Starlight

What effect does the melt index of a resin have on its ability to be rotationally molded? When (give ...

Started by BrownTown3

A thermoformed part has a total surface area of 1000 cm2 and a required thickness of 1 mm. It is ...

Started by oliviahorn72

Could you thermoform parts from sheets of a material of very high crystallinity or narrow molecular ...

Started by MirandaLo

Give three methods for controlling the exotherm in casting. Explain how they work. What will be ...

Started by burton19126

How does the processing differ for making closed and open cell foam? Describe 3 specific ...

Started by crazycityslicker

You have been asked to specify criteria for a plastic part that is to be used as a storage tank on a ...

Started by tth

You have been asked by your company to evaluate making camper shells for trucks by either rotational ...

Started by Bernana

Discuss the differences between blister packaging and skin packaging. What will be an ideal ...

Started by Shelles

Describe why fillers and other additives may increase or, in some cases, decrease rotomolded part ...

Started by hubes95

Describe why the weight of the resin charge is so important in part performance. What will be an ...

Started by newbem