PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

D7539 Standard Practice for Using a Test Chamber for Humidity Conditioning of Test Panels of Pavement Marking Paints

All Standards | ASTM Standards
Search Standards
Click to Purchase and Download this Standard or Test Method
Revision Date: August 03, 2010
Updated On: August 03, 2010
Editorial Change:
 
The drying rate of organic coatings varies with changes in temperature, air flow, and relative humidity. In particular, the drying rate of waterborne paints depends on the evaporation of water and thus is much more dependent on relative humidity than are solvent based paints or paints that are 100 % solids. Measurement of the rate of drying of waterborne paints under ambient conditions in laboratories cannot be adequately replicated without some control of the drying conditions. A test chamber will be described that provides a means of controlling relative humidity above ambient humidity and minimizing the effects of air flow variability at ambient room temperatures. If desired, the test chamber without water in it and with vents wide open can be placed in a temperature and humidity controlled room to test dry speed at various temperatures as well as humidity while using the chamber to minimize the effect of air flow.

This practice is particularly useful for testing the drying rate of waterborne pavement marking (traffic) paints where fast dry at elevated ambient humidity is an important feature. For waterborne traffic paints, the test chamber can be used to evaluate dry to no-pick-up (Test Method D711) and water wash-off resistance (Practices D7377 and D7538) at elevated ambient humidity.

1.1 Specification D3924 defines a standard environment of 23 ± 2°C and 50 ± 5 % relative humidity and free from drafts for normal conditioning and testing of paint, varnish, lacquer, and related materials. This practice describes a test chamber that allows for control of relative humidity above the ambient relative humidity and minimization of air flow for conditioning of test panels at elevated relative humidity and room temperatures.

(Back to all Standards)
 
   

Madison Chemical Industries Inc.
Your zinc-rich primer
is obsolete!
Madison’s Zinc-Rich
technology takes the
state of the art to a
new level. AlumiZinc ‘S’
offers superior protection
in a user-friendly
and forgiving format.

LS Industries
LS Blasters: Optimum Steel Cleaning Efficiency
Simplify surface prep with the precise shot control of LS Blasters. Our blast technology delivers optimum coverage and finish. 800-533-8008

Corrosion Probe, Inc.
From Detection to Correction
Corrosion Probe, Inc. has the Most Concrete Coatings Experience and Expertise. Contact us today at
860-767-4402, www.cpiengineering.com

International Paint LLC
Our New Protective Coatings Centers
Our complete range of International and Devoe Coatings products are available at our Protective Coatings Centers, making purchases faster and easier.

HoldTight Solutions Inc.
NO FLASH RUST -
NO CONTAMINANTS
Our HoldTight®102 salt remover & flash rush inhibitor prevents flash rust by removing surface contaminants.
Contact us for your nearest distributor. (800) 319.8802 sales@holdtight.com

TruQC, LLC
Click here to start your free trial
TruQC is cloud-based job-site documentation built for the iPad. It's easy-to-use, objective and complies to common industry standards. Learn more: TruQCApp.com.

Fischer Technology Inc.
Gauges Meet IMO-PSPC & SSPC-PA2 Requirements
• USB or optional Bluetooth
• Custom inspection reports
• Excellent on edges & rough surfaces; Optimum accuracy
• Largest selection of probes to meet challenging situations
Call Fischer: 800-243-8417

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker JPCL Europe
 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2013, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com