Focus on Window Construction Sealant Delivers Aggressive Adhesion in Aluminum Window Manufacturing

May 29, 2002
/ Print / Reprints /
ShareMore
/ Text Size+


Dow Corning 1199 SSL is a narrow-joint seam sealant that provides a barrier against air and water in window-sash or frame components that are mechanically fastened, mitered or slip-jointed.
A silicone sealant has been introduced for aluminum window and door manufacturing that delivers aggressive adhesion and outstanding performance in a non-flammable, low-VOC formulation. Dow Corning(r) 1199 SSL silicone sealant is a semi-flowable material designed specifically for OEM applications. The rapid-curing, one-part sealant is a semi-self-leveling formulation with tenacious adhesion to anodized, mill-finish or painted aluminum; glass; and urethane thermal breaks.

"The semi-flowable nature of this material allows it to seal very complex extrusion profiles without the need for tooling," explained Dow Corning Market Specialist Doug Kempf. "It's an ideal narrow-joint seam sealer, providing a barrier against air and water in window-sash or frame components that are mechanically fastened, mitered or slip-jointed.

"Because of its high extrusion rate and fast, room-temperature cure, the product is ideally suited for high-speed manufacturing," Kempf added. The flow rate of >700 grams per minute allows easy pumping, and a skin-over time of just 10 to 15 minutes at room temperature facilitates optimum line speeds.

Unlike the solvent-based acrylics commonly used today, which contain 30% to 50% solvent, the new Dow Corning formulation is supplied at >97% solids. That translates to less shrinkage, significantly reduced emissions and few flammability issues.

Kempf explained that although acrylic sealants offer excellent adhesion, they don't fully cure in place. Over time, high temperatures can cause this type of formulation to sag, and it may develop gaps that lead to water leaks. With the acrylic formulations, low-temperature flexibility is also a recognized problem.

In contrast, Dow Corning 1199 SSL silicone sealant cures to a tough, resilient elastomer that effectively withstands UV exposure, extreme temperatures and thermal movement to provide a durable, weathertight seal. The new silicone material has demonstrated excellent performance with poured and debridged urethane designs.

The product's neutral-cure system is based on a non-corrosive formulation that offers primerless adhesion to most fenestration materials and releases no objectionable odor. The cured elastomer exhibits 135-psi tensile strength and 375% elongation, allowing it to easily accommodate extreme thermal cycling and normal substrate movement. Its service temperature range is -60 deg F to 300 deg F (-51 deg C to 149 deg C).

The silicone sealant is available in five standard colors: clear, white, black, bronze and aluminum. It is supplied in 10.3-oz cartridges, 5-gallon pails or 55-gallon drums.

Dow Corning develops, manufactures and markets a range of silicon-based materials. Currently offering more than 10,000 products to customers around the world, the company is a global leader in silicon-based technology, with shares equally owned by The Dow Chemical Co. and Corning Inc.

For more information, contact Dow Corning Corp., PO Box 0994, Midland, MI 48686-0994; phone 517-496-6000; fax 517-496-8026; or visit www.dowcorning.com/construction. Or Circle No. 72.

Links

Did you enjoy this article? Click here to subscribe to Adhesives & Sealants Industry Magazine.

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

ASI April 2014 Photo Gallery

Our April 2014 issue is now available!

Podcasts

ExxonMobil Tackifier Expansion

Dwight Tozer, vice president of ExxonMobil’s Adhesion Industry business, discusses the company’s latest tackifier expansion project with Editor-in-Chief Susan Sutton.

More Podcasts

Adhesives & Sealants Industry Magazine

ASI Sept 2014 cover

2014 September

Our September issue features articles focusing on high-tech applications and raw materials, as well as a preview of the ASC Fall Convention and Expo. Check it out today!

Table Of Contents Subscribe

THE ADHESIVES STORE

handbook-sealant-tech.gif
Handbook of Sealant Technology

The Handbook of Sealant Technology provides an in-depth examination of sealants, reviewing their historical developments and fundamentals, adhesion theories and properties, and today’s wide range of applications.

More Products

ASI 2014 Buyers GuideASI's Buyers' Guide

Annual purchasing resource for equipment used in the manufacture/formulation of adhesives, sealants, pressure sensitives, tapes and labels and for application of finished adhesives. 

Clear Seas Research

With access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

STAY CONNECTED

facebook_40px twitter_40  youtube_40pxlinkedin_40 google+ icon ASI 30px