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Suggestion needed

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Topic: Suggestion needed

gm
Member

Posts: 2
From:
Registered: Oct 2002

posted October 02, 2002 09:25 AM

I have to do a thesis on any ONE of the following topics for my masters course. Could anybody give me some advise as to
which topic is good to work on.

1) Filled engineering plastics : Nylon and PC filled with nano sized fillers (MMT , saponite) and study properties of these filled polymers.

2) Blends of polysulfones: Impact strength of these polymers can be improved by addition of impact modifiers.Mechanical, electrical and thermal properties of these
blends can be studied along with processibility.

3) Universal polymeric master batches: with polyethylene and polystyrene.

4) FRP based on speciality epoxy resins: Reinforce epoxy resins with fibres and study their properties.

5) Evaluation of toxicity index of polymeric compounds: Different compounds will be prepared containing different
amounts of plasticisers and additives in twin screw extruder. Standard test specimens will be moulded and subject to mechanical and electrical testing. Test
specimens will be placed in heating chamber and gases evolved will be found on portable gas detector.Toxicity index of each compound can be found using a formula. Based on testing and toxicity data , optimum recipe for each application can be suggested.

Any suggestions will be appreciated.
Thank you.
GM.

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griffex
Senior Member

Posts: 38
From:bethesda MD USA
Registered: Sep 2001

posted October 07, 2002 11:48 AM

Why is this in the extrusion forum?
And why can't you identify yourself further?
Nevertheless, here is a reply:
1. This is my suggestion as the best idea. Nanoclays are a hot topic (see last ANTEC papers and contact authors) and you'll have lots of recent work to review. I'd like to see more work in extrusion, especially with the cheaper plastics (PE, PS, PVC) -- most of what I've seen has been with injection molding of engineering plastics. I'd like to know how do these additives affect the extrusion PROCESS?
2. Polysulfones = most exotic of the 5 ideas, limited market, not in mainstream of plastics industry, but might get you recognized at big companies who use polysulfones.
3. Universal concentrate. May be useful, but what's wrong with separate concentrate carriers for each resin family? I would like to see a study of the viscosity of carriers and concentrates (as function of temperature and shear rate), as this affects the ease of mixing.
4. Epoxies aren't normally extruded, so that's another world to me.
5. Toxicity of plastics is an ideological jungle. It has less to do with plastics and more to do with people who are doing the wrong things (junk science) for the right reasons (our health). They are preying on anxieties we all have about an impersonal and super-technological world run by corporate executives who milk the public, etc.,etc. They talk in numberless absolutes and use plastics (and other things) to divert attention from the sacred right to consume what one wants when one wants it, and they call that "freedom." If you want to jump into this pool, go ahead, but leave me out.
I hope this has been helpful.
ALG

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