Newsgroup sci.polymers 9023

Directory

I am looking for information on the recycling of plastics.
Any pointers regarding FAQ's, http sites, newsgroups, magazines, journals,
books, organizations, etc. would be greatly appreciated.
Thanks in advance.
Alan

Hi all:
I have an application requiring a film diaphragm, under moderate tension,
that is to be metal plated with a very thin coat of gold, or aluminum.
The question has to do with maintaining the longterm tension of the film
after mounting. I've been told of electron bombardment as one means to
this end. Is there a reference work that is understandable to the layman
or nearly so, that I could find at a good engineering library (U of MN)?
Thanks,
Dan Kennedy

Is there a polymer to coat a hot water heating coil for
drinking water thus preserving the life of the coil indefinately?

It should go without saying that in the petrochemical (and related) 
industries, small screw-ups lead to big consequences in a hurry.  The best 
protection against this requires operations and maintenance personal to 
always think (usually more than once) before performing their jobs.  This 
trajedy (see below) sounds very much like a case of familiarity breeding 
contempt.
In article <32C18182.49C0@clihouston.com>,
   "Russell D. Kane"  wrote:
>Path: 
news.hal-pc.org!insync!www.nntp.primenet.com!nntp.primenet.com!su-news-hub1
bbnplanet.com!news.bbnplanet.com!cpk-news-hub1.bbnplanet.com!news.sesqui.n
et!gtri14.gtri.harc.edu!news
>From: "Russell D. Kane" 
>Newsgroups: 
sci.chem,sci.chem.electrochem,sci.chemistry,sci.eng.mech,sci.engr,sci.engr.
chem,sci.engr.manufacturing,sci.engr.mech,sci.engr.metallurgy,sci.geo.petro
leum,sci.materials,sci.materials.ceramics,sci.misc,sci.polymers,sci.researc
h,sci.engr.safety
>Subject: Needless Loss of Eight Lives Working with High Pressure
>Date: Wed, 25 Dec 1996 13:33:22 -0600
>Organization: CLI International, Inc.
>Lines: 19
>Message-ID: <32C18182.49C0@clihouston.com>
>Reply-To: rdk@clihouston.com
>NNTP-Posting-Host: ds8.main.com
>Mime-Version: 1.0
>X-Mailer: Mozilla 3.01 (Win95; I)
>Xref: news.hal-pc.org sci.chem:48832 sci.chem.electrochem:4426 
sci.engr:16351 sci.engr.chem:13992 sci.engr.manufacturing:11519 
sci.engr.mech:21857 sci.engr.metallurgy:8810 sci.geo.petroleum:8305 
sci.materials:14120 sci.materials.ceramics:2418 sci.misc:13754 
sci.polymers:7724 sci.research:6294 sci.engr.safety:4281
>Status: N
>
>See the excerpt from the Houston Chronicle article on the explosion at
>the Wyman Gordon plant in Houston at the Web Site given below.  The men
>had opened the system many times before and thought that the system was
>depressurized. The pressure gage was many feet away from where they were
>opening the vessel....so that they could not see that it was actually
>under 5,000 psi.
>
>http://www.clihouston.com/tragedy.htm
>
>Safety awareness is an important part in any business operation.
>

On Fri, 27 Dec 1996 16:16:05 -0600, Subramani Iyer=20
>>>>>=20
>>>>The maxima 820 program that we have is installed on a NEC 386
>>>>pc.  We were unable to use any other 386's and the maxima 820
>>>>is not on windows.  Seems like a real old system.  But=20
>>>>upgrading this implies changing the detector and hence lots of=20
>>>>$$.  any suggestions??
>>>>
>>>>s. iyer
buy HP. I've got DAD 990+ running on NEC 386/20. Fisrtly, that bloody
thing checks for I/O card, therefore I can not use another PC to
process data while the NEC is collecting a consecutive run. They say,
it is to protect a copy-write etc. Who would like to pirate it anyway?
Spares are scarce every year, I can not obtain an output from a
deuterium lamp to match, what the manual says, even with the brand new
lamp. And yes, it only accepts NEC 5300 color printer in a single run
mode, or Waters 5300 printer/plotter (B&W;) in a semi-auto mode. It is
pathetic, cos we can use any printer with HP GC (oh, yes, HP runs
under Windoze). If I remember correctly, DAD software was written in
Japan, and all hardware comes from that country. Now, I understand,
Waters sources its warez from US. But still, what are hardware
requirements for Millenium? Anyway, I face the same problem, when DAD
dies, there is no simple upgrade path, other than to buy a completely
new system.
Roman
romek@dot.net.au
romek@ozemail.com.au
Lane Cove Australia

Dear Sir,
I would like to introduce to you our compnay " Ultrafine Technologies Ltd"
We are producers of Ultrafine Silver Powder. The powder we produce has an 
average particle size of .05-.1 micron with agglomerates of under .4 micron.
The powder is produced with a brand new novel patented process. No one even comes close.
In tests we were able to show better than 25% improved conductivity
or saving of 25% of the silver content with keeping the same conductivity.
our small agglomerate size lends itself to high-end thick pastes 
with very thin conductive lines on substrate 
We also produce silver alloys such as silver-palladium with similar properties.
If you would like to hear more about our technology please e-mail to
avigreen@netvision.net.il att: avi greenboim - managing director

I thought some of you would like to know that,
Eclipse Software has designed (2)  unique software programs for
Authoring and maintaining MSDS sheets. 
    1. "MSDS Wizard", the authoring program, has all drop down windows
for quick selection of information to design the document.
    2. "MSDS Scan Wizard", the maintenance program, has the feature of
scanning the original document
 directly into the program, thus instant organization, and elimination
of up to 95% of the workload of 
maintaining them.
Please visit their home page at 
    http://www.eclipsesoft.com  
and download the software for your review. 
              -OR- 
call them direct and order the literature and demo disks directly.... 
at ...   800-582-2471
Gary

Jeff Helgerson wrote:
> 
> Anyone have any information about extruding Kraton or Dynaflex into small
> tubes (.080" OD x .055" ID)?  We are looking at this polymer in the 70-90
> Shore A hardness range.  Is this polymer dimensionally stable?
 Kraton is available in hardness up to 93 Shore A (D3204 = 80, D7340 =
93, G7730X = 86, D1101 = D1102 = 71, D1122X = 78, D1184 = 75, G1650 =
G1652 = G1654X = G1702X = 75). Try contacting their techical service
department for further info.
-- 
A desk is a terrible spot to view the world from.
Opinions expressed herein are my own and may not represent those of my employer.

Anonymous wrote:
> 
> Paul Ennin M.D. wrote:
> >
> > Hello all I am a new suscriber to your news group.  I am a new engineer
> > and I am looking for a job.
> > Can anyone help.
> > In NY area especially!!!
> 
> I do not know about the New York area, but in the St. Louis area there
> are no entry level positions open, and it may be that way in many other
> places.  I have been sending resumes out for several years, and no
> permanent position has gotten less than about 40 resumes.  Even
> temporary 1 or 2 month stints have about 5 or 10 resumes.  Many of the
> entry level jobs that would have once gone to persons with Bachelor's
> degrees are now being filled with PhD's with 10 or so years of
> experience in each field because they are being downsized into the entry
> level positions.  The reality is that the supply far outstrips the
> demand.  Maybe if you tried to enter the field 10 or so years ago, you
> might have been able to enter it, and work continuously and successfully
> at it.  Nowadays, you might want to consider working as an M.D.  It
> might be different in other areas of the country, but if not, it seems
> doubtful that you might find anything at all.
> 
> Sorry, -X
I don't believe that. I graduated from UM Rolla in May, and 6/8 people
in my department had jobs BEFORE graduation. My wife also had a job upon
graduation from Rolla.