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Aerosol Adhesives Jim Beardsley 3M Nov. 8, 1999

Aerosol Adhesives Jim Beardsley 3M Nov. 8, 1999. Why do people buy aerosol adhesives Adhesives vs Paints 3M recommendations for VOC limits. Why Buy Aerosols . Speed - fast drying solvents allow bonds to be made in seconds rather than minutes

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Aerosol Adhesives Jim Beardsley 3M Nov. 8, 1999

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  1. Aerosol AdhesivesJim Beardsley3MNov. 8, 1999 • Why do people buy aerosol adhesives • Adhesives vs Paints • 3M recommendations for VOC limits

  2. Why Buy Aerosols • Speed - fast drying solvents allow bonds to be made in seconds rather than minutes • Portability - Aerosol adhesives are self contained systems. No need for air or electricity. Can be easily held in one hand. • Neat- Controlled spray and lack of auxiliary equipment means less clean up

  3. Why Buy Aerosols • Costs • No investment in equipment -critical for small businesses • Low training costs • No equipment maintenance • Less hazardous waste generated • no solvents needed for equipment clean-up • Less than 3% waste in can (typical 1%) • Cans are recyclable

  4. Why Buy Aerosols • Wide bonding latitude • Aerosol adhesives often can be used on a variety of substrates • One adhesive can be used for a variety of applications • Fosters creativity - customers create their own unique uses.

  5. Adhesives VS Paints • Adhesives are unfilled (no pigments or reinforcing agents) • Use higher molecular weight polymers and resins (lower solubility) • Must adhere to more than one surface • Stresses are higher and the type varies • Peel Shear Tensile Cleavage

  6. Adhesives VS Paints • Require greater long term durability • Cannot recoat adhesive in bondline • Often cannot add color to bonded substrates • Thin coats needed to prevent telegraphing

  7. Alternative Solvents • Alternative solvents pose problems for aerosol adhesive usage • Parachlorobenzotrifluoride • Solubility • Strong Liver toxin • Odor

  8. Alternative Solvents • Methyl Acetate • Solubility • Odor • Volatile methyl siloxanes • Slow evaporation • Adverse effects on bond line • Solubility

  9. Alternative Solvents • Perchloroethylene • Low TLV (25 ppm) • Toxicity Issues • Confirmed animal carcinogen • Relevance to humans unknown but suspected.

  10. Alternative Propellants • HFC-152a • Cost • Solubility • Limited solubility in higher molecular weight polymers used in adhesives • Carbon Dioxide • Non-continuos uniform pressure • Solubility

  11. 3M Recommendations • Four categories • General Purpose • High Performance • Contact Bonding • Other applications • Mounting • Repositionable

  12. 3M VOC Limit Recommendations • General Purpose 60% • High Performance • Contact Bonding 60% • Other 70% • Mounting 70% • Repositionable 60%

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