1. Polyolefin By: Dustin Pfsiter

2. Most Common Use: Heat Shrink Tubing Heat Shrink Tubing

3. Special Properties Electrical: high electrical safety rating of up to 600 volts Electrical: high electrical safety rating of up to 600 volts Physical: tensile strength=15MPa Physical: tensile strength=15MPa elongation at break=450% elongation at break=450% Thermal: no cracking, dripping, or flowing at max. temps from 250 °C to -55 °C Thermal: no cracking, dripping, or flowing at max. temps from 250 °C to -55 °C Chemical: Excellent resistance rating from Fluid and fungus; also non-corrosive Chemical: Excellent resistance rating from Fluid and fungus; also non-corrosive

4. How do you do it? Place the tubing over the area needed to be covered. Place the tubing over the area needed to be covered. Wave any type of heating instrument (without an open flame) across the tubing. A temperature of around 190 °F is needed. Wave any type of heating instrument (without an open flame) across the tubing. A temperature of around 190 °F is needed. Tubing begins to shrink around the object. Tubing begins to shrink around the object.

5. How does it work? Made up of a partially polymerized plastic. Made up of a partially polymerized plastic. Heat forces monomers closer together, making plastic more dense. Thus, the tube shrinks. Heat forces monomers closer together, making plastic more dense. Thus, the tube shrinks. Irreversible process Irreversible process

6. Example

7. References NELCO Products Incorporated NELCO Products Incorporated http://www.nelcoproducts.com/tubing/index.cfm Electro Insulation Corporation Electro Insulation Corporation http://www.electroinsulation.com/hst2.htm http://van.hep.uiuc.edu/van/qa/section/Everything_Els e/Chemistry http://van.hep.uiuc.edu/van/qa/section/Everything_Els e/Chemistry http://van.hep.uiuc.edu/van/qa/section/Everything_Els e/Chemistry http://van.hep.uiuc.edu/van/qa/section/Everything_Els e/Chemistry Morgan Motor Company Morgan Motor Company http://www.team.net/www/morgan/tech/heat-shrink.html Program Technology Ltd. Program Technology Ltd. http://www.programtech.com/index.htm