• Blog
  • About
  • Contact
  • Blog
  • About
  • Contact
  Variety Blog

Chemical Resistant Coatings for Lifetime Performance and Efficiency

4/1/2015

0 Comments

 
There are machineries and equipment that have to function in the presence of environmental and industrial chemicals. Chemical resistant coatings provide the best benefits of chemical, corrosion and abrasive resistance to these machineries and equipment. Chemical resistant coats provide the high quality finish for the toughest and roughest machineries so that they will remain durable even when exposed to UV rays, impact, moisture, chemicals and extreme weather conditions.

The importance of Chemical resistant coatings

Different coatings that are resistant to chemicals are protecting a broad range of structures such as storage tanks, oil and gas pipelines, water and wastewater pipes, bridges, ships and other facilities. The products become effective because of their resistance to aggressively corrosive environments, hot and cold temperature, curing capability, high abrasion resistance and compliance with environmental regulations on the emission of volatile organic compounds (VOCs). For end users, this means greater assurance in achieving the desired results within the budget.

Teflon PTFE as Chemical resistant coating

PTFE or polytetrafluoroethylene is a non-stick coating that has the highest operating temperature of any fluoroplastic with a low coefficient of friction, excellent abrasion resistance and good chemical resistance. FTPE is resistant to a broad spectrum of industrial chemicals but it should be tested for all possible combinations of chemicals to which the devices may come in contact with. Currently, the only chemicals that are known to cause damage to PTFE are elemental sodium and elemental alkali metals, fluorine and high concentrations of metal hydrides, amines and imines at temperatures of 260oC (500oF). There are general chemical resistance charts for PTFE resins but they are general guidelines that do not provide specific guarantees. It is always the end user’s responsibility to test compatibility to produce the best possible results.

Polyurethane coating as protection against corrosion

The properties of solid polyurethanes vary from the soft rubbery elastomers to the hard ceramic-like systems. Solid polyurethanes have chemical bonds that are highly cross-linked to each other to create hard and dense systems that have good chemical and mechanical resistance. Solid polyurethanes are the choice of many industries because they have excellent adhesion and provide good corrosion protection for metals. On the other hand, elastomers have more linear structures but with less cross-linking that allows them to be stretchy and elastic. Elastomers have greater impact strength and flexibility but they have poor adhesion and chemical resistance which makes them more suitable as coating for substrates that move and flex like concrete. However, the chemical resistance of elastomers can be improved if coating is applied more thickly.

Choosing the right Chemical resistant coatings is for lifetime protection and efficiency. For example, pipeline coatings are very critical in connecting these pipelines to end-users because they have to ensure that there is no corrosion and the integrity of the high-pressure carbon steel pipeline is maintained When selecting a suitable coating, it is important to consider the coating’s ability to provide chemical and mechanical protection as well as damage resistance from rough handling. It is also important to consider its compatibility with soil chemistry and pipeline operating temperatures. 

0 Comments



Leave a Reply.

    Author

    Write something about yourself. No need to be fancy, just an overview.

    Archives

    May 2020
    April 2020
    March 2020
    February 2020
    January 2020
    December 2019
    November 2019
    October 2019
    September 2019
    August 2019
    July 2019
    June 2019
    May 2019
    April 2019
    March 2019
    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    May 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014

    Categories

    All

    RSS Feed

Powered by Create your own unique website with customizable templates.