We
commonly receive inquires to determine the best one coat system for a
given application. Here is some information that my be helpful in
understanding the various products.
In general, knowledge of a coating chemistry and how that chemistry will standup in a given environment is a big help in selecting the correct coating or coating system. We asked a DuPont Chemist to help us understand the primary strengths and weaknesses for some of the organic resins used in one coats and primers to aid us in selecting the best system for a given application. There are several common organic resins used in the one coat products:
PAI = Polyamide - Imide resin.
These resins have relatively high temperature resistance, excellent
adhesion to most metals and are fairly easy to put in water systems.
However, basic chemical resistance is not as good as some other choices.
Epoxy =
Epoxy carriers of various types. Characterized as having excellent
adhesion and easy to work with, the relatively low use temperature (300
to 400 F) limits use of these resins.
PES = Polyethersulfone. Excellent toughness, good chemical resistance makes these resins an excellent choice except in harsh solvent environments. These resins are difficult to put in water systems therefore coatings are usually solvent based. Coatings made with PES tend to soften above 400 F.
PPS =
Polyphenylene Sulfide. Excellent toughness and chemical resistance.
These resins are excellent choices for water systems at lower
temperature uses but tend to soften at temperatures above 400 F.
The most common DuPont one coat systems are shown below listed by major resin type used in the system.
For chemical environments, understanding how the resin interacts with the chemicals will help you to choose the right one coat for an application.
* Examples of strong solvents are NMP, THF, DMF and Methylene Chloride. . |
Thursday, September 30, 2010
One Coats and Binders - A Selection Guide
New Look at CoaterOne
- More products than ever before.
- A full library of Teflon product data sheets and MSDS’.
- Easy, organized, economical online purchasing of the materials you need to run your business.
- Earn rebates for online supply material purchases.
Wednesday, September 22, 2010
Production Tip
Sometimes the introduction of a new product or a variation of an old product into your shop will improve process, employee safety and save dollars.
Many spray guns operators wear shop gloves made of cotton or jersey to cover and protect their hands. “Over spray” will soak into these glove materials and if the gloves are not changed often the skin will become irritated even damaged.
2. Repels wet coatings so skin on fingers and hands stays healthy
3. Stays in service much longer than the standard cotton or jersey shop glove
4. Provides substantial savings in supply material cost when used during spray coating instead of non latex dipped cotton or jersey gloves
For these and hundreds of other gloves used by the industrial coater visit www.intechservices.com.
Introducing Chris Dohl
As a graduate of the University of Delaware in operations management Chris spent the last 12 years working for W.L. Gore and Associates, a producer of thousands of PTFE based products. He worked in the industrial segment of Gore’s business for 4 of his twelve years and has experience in Fluropolymer production. Chris’s Industrial background and strong desire to grow your Teflon business should prove an asset to all of us in the Teflon* Family.
For questions about Teflon* product and its application feel free to contact Chris through the message center on www.intechservices.com, by email or Intech office phone, 302-366-8530.
Thank you for your business.
DuPont Thinners
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Wednesday, September 15, 2010
Why outsource hooks and racks - Cost Analysis
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The Power of Kevlar*
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