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balloons to hold water

Hi..Looking for a material like a balloon that will expand and contract with freezing, yet will hold water without loss...
0 comments posted 21yrs
posted by pleibel
0 comments posted 21yrs posted by pleibel

Roll forming machine

We are Taiwan professional manufacturer of all custom roll forming machine. We can desgin the machine just according to...
0 comments posted 21yrs
posted by adolescent77
0 comments posted 21yrs posted by adolescent77

Reverse Electrorheological Material?

Are there any materials that act in a manner opposite to electrorheological materials? (i.e. are normally solid or semi-...
1 comments posted 21yrs
posted by degroof
1 comments posted 21yrs posted by degroof

Sterling Silver Alloying Agents

I am interested in the alloying agents used in sterling silver. I am told that different agents have been used through...
2 comments posted 21yrs
posted by rocky
2 comments posted 21yrs posted by rocky

Open Data in Crystallography - Petition

Dear Chemists, Crystallographer, Mineralogists, etc, If you have difficulties in accessing the crystallography database...
0 comments posted 21yrs
posted by alb
0 comments posted 21yrs posted by alb

in-situ polymerization?

I've been doing some reading regarding CNT distribution in polymer composites... however, I've yet to find a novice def...
0 comments posted 21yrs
posted by dave.harper
0 comments posted 21yrs posted by dave.harper

Coal-fired merchant shipping?

In the 19th century, most ocean shipping was powered by coal/steam and wind. There was a well distributed system of coa...
21 comments posted 21yrs
posted by jtnospam
21 comments posted 21yrs posted by jtnospam

comparing smooth surfaces

I have to build a non-electric parabollic satellite and because smooth surfaces are better at directing soundwaves, I n...
2 comments posted 21yrs
posted by artemis.bluemoon18
2 comments posted 21yrs posted by artemis.bluemoon18

high temperature glass rods

Hi, Can anyone suggest where I can purchase glass rods (less than or equal to 1/4" dia) and lengths of 4 to 5 inches or...
9 comments posted 21yrs
posted by philippanicker
9 comments posted 21yrs posted by philippanicker

polycarbonate film & sheet material

We are the manufacture factory of polycarbonate film and sheet in China. The thickness range is from 0.125mm ~1.0mm. Ou...
0 comments posted 21yrs
posted by sophia
0 comments posted 21yrs posted by sophia

Manipulacion del nacar

Quisiera saber si alguien tiene alguna tecnica para la manipulacion del nacar.
0 comments posted 21yrs
posted by caritus82
0 comments posted 21yrs posted by caritus82

EAP's?.

I've been reading a lot about EAP Gels. All give a rather general description of the chemical composition.. but no spec...
0 comments posted 21yrs
posted by bobason456
0 comments posted 21yrs posted by bobason456

Identify Plastic tube

I have an 8.5" x 42" clear plastic tube with a 1/4" wall thickness. How can I identify the type of plastic. It is proba...
0 comments posted 21yrs
posted by amdx
0 comments posted 21yrs posted by amdx

Spray Paint can weight

Hello all Is it as simple as saying the weight of the can denotes its fullness, or is there a curve of weight in a spra...
2 comments posted 21yrs
posted by blah
2 comments posted 21yrs posted by blah