Reducing Modulus of Sealants to Improve Durability

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Volume 3, Issue 4 (April 2006)

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ISSN: 1546-962X
Page Count: 6

Reducing Modulus of Sealants to Improve Durability
Klosowski, JM
President of Klosowski Scientific Inc., Chief Chemist—Engineering Diagnostics Inc., FASTM, Retired Senior Scientist, Dow Coming Corporation, Klosowski Scientific Inc., Michigan

Plott, JE
President, The Performance Strategy Group, www.performancestrategygroup.com, Registered Professional Engineer, Certified New Product Development Professional, John E. Plott, PE LLC, MI

(Received 23 May 2005; accepted 20 October 2005)

Abstract

The premise is that if one reduces sealant fatigue by lowering modulus while leaving other characteristics of a sealant unchanged, its durability will improve. Reducing sealant fatigue is seen as a positive consequence of lowering the modulus of elasticity of a sealant. The data shows the effect of incorporating a modulus modifier in one- and two-part (standard curing) urethane sealants and a one-part silane curing polyether sealant. This approach lowers modulus with no or minimum reformulation.

Keywords:
sealant, additive, adhesion, modulus, elongation, movement, durability

Paper ID: JAI13415
DOI: 10.1520/JAI13415
ASTM International is a member of CrossRef.

Author Title Reducing Modulus of Sealants to Improve Durability Symposium Durability of Building and Construction Sealants and Adhesives, Second Symposium, 2005-06-16 Committee C24

		Home Journals STPs Manuals Topics Subscriptions/Pricing Digital Library / Journals / Journal of ASTM International (JAI) / Citation Page Volume 3, Issue 4 (April 2006) Click here to download this paper now for $25 PDF (272K) View License Agreement ISSN: 1546-962X Page Count: 6 Reducing Modulus of Sealants to Improve Durability Klosowski, JM President of Klosowski Scientific Inc., Chief Chemist—Engineering Diagnostics Inc., FASTM, Retired Senior Scientist, Dow Coming Corporation, Klosowski Scientific Inc., Michigan Plott, JE President, The Performance Strategy Group, www.performancestrategygroup.com, Registered Professional Engineer, Certified New Product Development Professional, John E. Plott, PE LLC, MI (Received 23 May 2005; accepted 20 October 2005) Abstract The premise is that if one reduces sealant fatigue by lowering modulus while leaving other characteristics of a sealant unchanged, its durability will improve. Reducing sealant fatigue is seen as a positive consequence of lowering the modulus of elasticity of a sealant. The data shows the effect of incorporating a modulus modifier in one- and two-part (standard curing) urethane sealants and a one-part silane curing polyether sealant. This approach lowers modulus with no or minimum reformulation. Keywords: sealant, additive, adhesion, modulus, elongation, movement, durability Paper ID: JAI13415 DOI: 10.1520/JAI13415 ASTM International is a member of CrossRef. Author Title Reducing Modulus of Sealants to Improve Durability Symposium Durability of Building and Construction Sealants and Adhesives, Second Symposium, 2005-06-16 Committee C24