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Efficient Polyurethane Pipe Coatings for Harsh Conditions

Efficient Polyurethane Pipe Coatings for Harsh Conditions
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Solvent-free two component polyurethane (2-K-PU) systems have been approved as suitable protective coatings systems since many years. Two component polyurethanes are favored within pipeline and tank constructions where high performance and durability have to be accomplished under harsh conditions (e.g., field application, high service temperatures, high salt load, wet soil conditions etc.). 

Product Number: 41214-869-SG
Author: Andreas aus der Wieschen, Matthias Wintermantel, Todd Williams, Ahren Olsen
Publication Date: 2014
Industries: Pipelines, Tanks, and Underground Systems , Coatings , Coatings and Linings
$0.00
$20.00
$20.00

Solvent-free two component polyurethane (2-K-PU) systems have been approved as suitable protective coatings systems since many years. Two component polyurethanes are favored within pipeline and tank constructions where high performance and durability have to be accomplished under harsh conditions (e.g., field application, high service temperatures, high salt load, wet soil conditions etc.). Building blocks of rigid polyurethanes were screened in the lab and resulting raw material property profile was modified in order to fulfill the requirements. Test coatings were developed, and the following tests were engineered to correspond to the typical ambient conditions of the Middle East region. Two field trials were carried out as part of the evaluation process. The performance of the coating in wet soil conditions was of highest interest. After 15 months in wet soil conditions the pipe was inspected. The coating was in excellent condition and did not show any damages. Raw materials for rigid 2-K-PU external coatings are being presented.

Solvent-free two component polyurethane (2-K-PU) systems have been approved as suitable protective coatings systems since many years. Two component polyurethanes are favored within pipeline and tank constructions where high performance and durability have to be accomplished under harsh conditions (e.g., field application, high service temperatures, high salt load, wet soil conditions etc.). Building blocks of rigid polyurethanes were screened in the lab and resulting raw material property profile was modified in order to fulfill the requirements. Test coatings were developed, and the following tests were engineered to correspond to the typical ambient conditions of the Middle East region. Two field trials were carried out as part of the evaluation process. The performance of the coating in wet soil conditions was of highest interest. After 15 months in wet soil conditions the pipe was inspected. The coating was in excellent condition and did not show any damages. Raw materials for rigid 2-K-PU external coatings are being presented.

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Field and Laboratory Experience with Polyurethane Pipe Linings
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Field and Laboratory Experience with Polyurethane Pipe Linings

Product Number: 41214-863-SG
Author: Allen Skaja, David Tordonato, Bobbi Jo Merten
Publication Date: 2014
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The Bureau of Reclamation’s Materials Engineering Research Laboratory has been evaluating polyurethane pipe linings for severe immersion exposure, specifically for outlet works and penstock linings. Polyurethanes have several advantages over other coatings, such as application temperature range, faster cure times in cold temperatures, rapid return to service, coat large surface area rapidly, low viscosity (i.e., accommodates pumping over longer distances), and greater impact resistance. 
Adhesion Measurements of Coatings on Cylindrical Steel Pipes: Variability & Significance
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Adhesion Measurements of Coatings on Cylindrical Steel Pipes: Variability & Significance

Product Number: 41214-815-SG
Author: S. G. Croll, B. D. Keil
Publication Date: 2014
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Quality assurance of coatings on steel water pipes commonly relies on tensile pull-off measurements of the coating-steel adhesion, according to ASTM D4541. These tests are performed by adhering a metal ‘dolly’ to the coating with an adhesive, then scoring around the dolly circumference, through the coating down to the steel surface, before recording the stress necessary to pull the dolly (and coating) away from the steel pipe. 
Myth or Fact: Higher Surface Profile Increases Coating Adhesion
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Myth or Fact: Higher Surface Profile Increases Coating Adhesion

Product Number: 41216-969-SG
Author: Brad Gooden
Publication Date: 2016
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Many coating product data sheets call for surface profiles of 3-4 mils. Others call for 1.5-2 miles surface profile for a very similar coating type – why should this be? To start to understand this we need to first of all look at why we measure the surface profile on steel surfaces. It pretty much comes down to two main things.
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