Bounty_
Harmless
Posts: 4
Registered: 1-12-2006
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Mood: No Mood
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Help producing plastic, very fluid during polimerization
Hi I'm looking for a reaction to make plastic with these features:
-must be very fluid during polimerization
-must stick onto "Ortophtalic Polyester Resin" (it's a resin used in GlassFiber_Reinforced_Plastic)
-polimerization must take place at normal temperature (STP temperature) without beeing
too exotermic (mustn't damage the underlayer of GlassFiber_Reinforced_Plastic)
-that the dispersing agent (if there is) and the byproducts of the reaction should
be gasses not too toxic (HCl is ok, HF no) otherwise I think it won't cure in a perfect flat surface
-must cure in a perfect flat surface and in not much time
-once cured in a 1millimeter or 2 millimeters layer must be easy to cut with a knife
without chipping
-cheap and easy to find components will be best, anyway I live 36 Kilometers from a
very big refinery and petrolchemical factory.
Thankyou very much for your help 
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Tacho
National Hazard
Posts: 582
Registered: 5-12-2003
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Some soft composition of epoxy or polyurethane. Ask your fiberglass supplyer, they probably have both along with good advice.
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Bounty_
Harmless
Posts: 4
Registered: 1-12-2006
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Thankyou I have found a polyurethane supplier but
Thankyou. I have found a polyurethane supplier but, in the features
tabel of his product viscosity is in cPs or in mPa.
Wikipedia instead uses cP=centi poise or Pa·s=Pascal*second
http://en.wikipedia.org/wiki/Viscosity
http://it.wikipedia.org/wiki/Viscosit%C3%A0
I have undertstand wikipedia measure units, but I didn't
understand the "cPs" "mPa" viscosity measure units that uses the firm.
Please help.
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solo
International Hazard
Posts: 3967
Registered: 9-12-2002
Location: Estados Unidos de La Republica Mexicana
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Mood: ....getting old and drowning in a sea of knowledge
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Note:
The pascal second (symbol Pa·s) is the SI unit of dynamic viscosity. If a fluid with a viscosity of one Pa·s is placed between two plates, and one
plate is pushed sideways with a shear stress of one pascal, it moves a distance equal to the thickness of the layer between the plates in one second.
One pascal second equals 10 poise. The name "poiseuille" was proposed for this unit (after Jean Louis Marie Poiseuille who formulated Poiseuille's law
of viscous flow), but not accepted.
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full
disclaimer)
It's better to die on your feet, than live on your knees....Emiliano Zapata.
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