Ho Young Jeong wrote: > > Dear Netters: > > I'm looking for the density of polybutadiene and poly(dimethylbutadiene) > in order to calculate self-diffusion coefficient of small gases in that > polymer by molecular dynamics. Although I searched polymer handbook, I > could not see the details of experiments, for example, pressure or > solvent system. It'll be better if there are latest experiments or > calculations for that polymers. I'll appreciate that you comment about > this work. > You must pay attention to the microstructure of the polybutadiene or poly(dimethylbutadiene). There are many differents between 1,4-cis, 1,4-trans or 1,2-polybutadiene. Your sincerely Peter MarquardtReturn to Top
How is polyurethane foam made? What materials are used? Is there any limit to size? Besides being an absorbent, what else can it be called? in order of importance. I have been cutting out out old cushions and using them as planters with some real interesting and practical results. One of the strangest things about these planters is the place where soil and the foam meet. The soil seems to slide away from the foam. So do plants, although they will climb over nicely. I still don't know if roots will grow through this material. Some basics would be appreciated.Return to Top
I'm searching for a polymer with these properties: -high temperature resistance (150-170°C) -high vibration damping (=high tan delta or high loss factor) I'll be glad to receive suggestions on polymers I could test or on how I could perform such a selection (books, databases, internet resources..) Please, help me! Luca TortoretoReturn to Top
I am looking for a polymer material which is suitable for the non-latex surgical glove. The glove material is SBS. The purpose of the coating is easy to ware no matter the hands are wet or dry. welcome any suggestion. MikeReturn to Top
Jonathan Klimek wrote: > > I am having a tough time finding a polyurethane thermoplastic close to > an inch thick. (sheet or extruded)..........Jonathan , here in Italy we have a number of companies producing technical itens in termoplastic PU by extrusion and injection molding, if you wont to be more precise email or fax me size of the material you wont ,width and do you wont it aliphatic or aromatic hydrolisis resistent or standard type Ciro Capellini Via S: Maria 30 27029 Vigevano (PV) fax++39 381 73473 email: ottocap@mbox.vol.itReturn to Top
Hi, I'm searching for everything known about the recycling of polyurethanes (chemical, physical, heat, enzymatic treatment, or else). Any help or hint is welcome. Please answer by Email. Thanks in advance. Claire. ( dibarbou@supaero.fr )Return to Top
Hi, I'm searching for everything known about the recycling of polyurethanes (chemical, physical, heat, enzymatic treatment, or else). Any help or hint is welcome. Please answer by Email. Thanks in advance. Claire. (dibarbou@supaero.fr)Return to Top
This is a multi-part message in MIME format. --------------138F57E9594B Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit -- reply to ds3eng@bolton.ac.uk Davinder Sandhu --------------138F57E9594B Content-Type: text/plain; charset=iso-8859-1; name="cai.txt" Content-Transfer-Encoding: 8bit Content-Disposition: inline; filename="cai.txt" I am currently in the middle of a project to build an impact test rig to carry out compression-after-impact tests on composite materials. I would like to hear from anyone who has carried out similar tests so that I may compare my results with theirs. Similarly if anyone knows of any web sites that have information on this area and in particular the related failure theorems, I’d like to hear from you. I’ve found a few but none that allow you to view their results. --------------138F57E9594B--Return to Top