Tag Archive for: coatings for galvanized steel

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NEI Development Update on NANOMYTE® TC-5001, a Protective Coating for Zinc-Plated and Galvanized Steel

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November 5, 2014

Somerset, New Jersey (USA): NEI Corporation has issued a product update, following the successful introduction of NANOMYTE® TC‐5001 – a nanotechnology-enabled, anti-corrosion coating for zinc‐plated and hot‐dip galvanized (HDG) steel. TC-5001 is a nanostructured composite coating consisting of organic and inorganic phases. It can be used either as a standalone coating or with the water-based, self-healing pretreatment, NANOMYTE® PT-100. In its current form, TC-5001 can be applied on metallic parts that have a zinc-based finish. Recent developments on its effectiveness and usage are outlined below.

Field Trials

Over the past couple of years, TC-5001 and related products have found use in several applications in different industries. Examples include:

Automotive Components and Support Structures

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Automotive parts coated in-house were subjected to salt-spray testing (ASTM B117) for over 1,000 hours to test the effects of corrosion; the TC-5001-coated parts showed no signs of white rust. Additionally, parts plated with alloys of zinc and aluminum were also coated with TC-5001 and are currently undergoing field testing.

Examples of structural parts that can be coated with TC-5001 (or related products) for corrosion protection are shown on the right.

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Automotive_Components

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Outdoor Structures

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Strain Insulators

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NANOMYTE® TC-5001-coated structures provide significant corrosion protection while supporting power lines in service. The coating has been successfully demonstrated to protect electrical grid components still in service for several months to date.

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Hardware Components

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Various TC-5001-coated nuts, bolts, and screws were exposed outside for 5 continuous months and showed no visible signs of corrosion.

To the right is a pair of galvanized steel screws after 5 months of outside exposure. The uncoated screw (left) shows the emergence of white rust on the threads while the coated screw (right) is still protected.

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Bolt Diagram

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Ease of Application and Curing

TC-5001 is amenable to dipping, brushing, and spraying. The ease of application of the coating is illustrated in the following video: Applying TC-5001

Methods of Application

  • Spraying: The coating is applied on clean surfaces using a commercial high volume, low pressure (HVLP) spray gun. Touchup spraying can be carried out to protect small pieces or tight locations using a touch up sprayer.
  • Rolling: Coating is done in a cross-pattern; left to right, then up and down as quickly as possible since the coating dries quickly.
  • Brushing: Brush application is carried out in a cross-pattern; up and down, then left to right.

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Faster Curing

A new development that was requested by metal finishers was to accelerate the curing of TC-5001. For applications requiring faster cure times, the coating can be brought to “dry to the touch” conditions in a matter of 5 to 10 seconds with thermal curing at 150°C to 200°C. This facilitates easy incorporation of the coating in a production line with continuous moving parts on a conveyer. Once the coating is dry to touch (partially cured), subsequent coatings can be applied and cured together.

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Related Products

NANOMYTE® PT-100 – Self-healing Pretreatment

This waterborne pretreatment improves adhesion and minimizes white & red rust formation when used in conjunction with TC-5001.

NANOMYTE® SR-500EC – Introduction of Hydrophobicity

In order to further enhance the degree of protection provided to metal parts, NANOMYTE® SR-500EC has been introduced. It is a transparent coating designed to provide easy-to-clean surfaces. The product is a nanostructured composite consisting of organic and inorganic phases and provides a hard, dense, and smooth coating finish. SR-500EC strongly adheres to metal, glass, and ceramic surfaces, and resists scratching and chipping. Additionally, it has superior water repellency and soil resistance. The hydrophobicity of the coating can be tailored as per application requirements. The coating is a single component product that is easily applied by dip, spray or brush and can be cured at room temperature. Currently, SR-500EC is undergoing field trials on metal, glass, and polymer surfaces where both anti-corrosion and hydrophobic properties are desired.

About NEI Corporation:

NEI Corporation is an application-driven company that utilizes nanotechnology to develop and produce advanced materials. The company’s core competencies are in synthesizing nanoscale materials and prototyping products that incorporate the advanced materials. NEI offers an array of Advanced Protective Coatings for metal and polymer surfaces. The coatings have tailored functionalities such as anti-corrosion, self-healing, scratch resistance, ice-phobic, and self-cleaning.

For more information, contact:

Ms. Krista Martin
NEI Corporation
(732) 868‐3141
sales@neicorporation.com
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New Self-healing Anti-corrosion Coating for Zinc-Plated & Galvanized Steel

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March 11, 2014

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Somerset, New Jersey – NEI Corporation recently introduced NANOMYTE® TC‐5001, a nanotechnology-enabled, single component, clear coating that significantly improves the corrosion resistance of zinc‐plated and hot‐dip galvanized (HDG) steel. It is amenable to dipping, brushing, and spray coating. The new coating technology is designed to protect zinc‐plated and galvanized steel surfaces from rusting under severe environmental and operating conditions. Applications of the coating technology include protecting outdoor structures (e.g., electrical grid structures, street lights, and lattice beams), hardware (e.g., rods, pipes, nuts, bolts and screws), automotive components and farming equipment. The dense barrier coating can be used as a standalone coating, as well as in combination with NANOMYTE® PT‐100, a self‐healing conversion coating. In salt‐spray tests (SST, ASTM B117), uncoated zinc‐plated steel bolts exhibited white rust in 24 hours and red rust after 168 hours. In contrast, the NANOMYTE® coating provided significant corrosion protection, even after 504 hours of SST. Typically, TC-5001-coated parts show no white rust even after 1000 hours and no red rust even after 1200 hours. SST can be used in conjunction with field testing and online life predictors for coatings on HDG, as prescribed by the American Galvanizers Association (AGA).

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NANOMYTE® TC‐5001 is part of NEI’s expanding portfolio of anti-corrosion coating systems, including pretreatments and topcoats that protect steel, aluminum and magnesium from corrosion. The coatings are economical, easy to use, and provide excellent corrosion resistance compared to state‐of‐the art offerings. “Our thin, single component, clear coating for zinc‐plated and HDG steel represents a significant advancement in the state‐of‐the‐art that could eliminate the need for using primers and topcoats,” said Dr. Ganesh Skandan, CEO at NEI Corporation. “The market focused activities of NEI are a key to serving the needs of customers who require high‐performance anticorrosion coatings. Our goal is to engage customers as partners in developing new corrosion-resistant coating products.”

The NANOMYTE® line of coatings provides an array of advanced protective surface treatments for metal, wood, and polymers. The coatings have tailored functionalities such as anti-corrosion, self-healing, scratch resistance, anti-ice, and easy-to-clean. In addition, NANOMYTE coatings are versatile and can be modified to introduce color and other features to meet performance and aesthetic requirements. NEI also offers a Materials Analysis, Testing, & Characterization service (MATCH) to help customers attain their materials performance objectives.

About NEI Corporation:

NEI Corporation is an application-driven company that utilizes nanotechnology to develop and produce advanced materials. The company’s core competencies are in synthesizing nanoscale materials and prototyping products that incorporate the advanced materials. NEI offers an array of Advanced Protective Coatings for metal and polymer surfaces.

For more information, contact:
Ms. Krista Martin
NEI Corporation
(732) 868‐3141
sales@neicorporation.com
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NEI Corporation Introduces Self‐Healing Anti‐Corrosion Coating for Zinc‐Plated and Galvanized Steel

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July 19, 2012

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Somerset, NJ – NEI Corporation introduced today a nanotechnology‐enabled, two‐layer coating that significantly improves the corrosion resistance of zinc‐plated and hot‐dip galvanized (HDG) steel. The NEI coating is a drop‐in replacement for trivalent chromium. The coating process consists of first applying NANOMYTE® PT‐100, a self‐healing conversion coating, followed by NANOMYTE® TC‐5001. The latter is a barrier coating, designed to work synergistically with PT‐100. Both PT‐100 and TC‐5001 are liquid coating formulations that are amenable to dip coating, brushing, and spray coating. The new NANOMYTE coating technology is designed to protect zinc‐plated and galvanized steel surfaces from rusting under severe environmental and operating conditions. In salt‐fog exposure experiments (ASTM B117), NANOMYTE‐coated, zinc‐plated steel panels showed no white rust after 840 hours; no red rust was observed even after 1200 hours. In contrast, non‐coated, zinc‐plated panels exhibited white rust in 24 hours and red rust after 168 hours in the salt‐fog chamber. Salt‐spray testing can be used in conjunction with field testing and online life predictors for coatings on HDG, as prescribed by the American Galvanizers Association (AGA).

The new technology is part of NEI’s efforts to develop corrosion resistant coating systems, including pretreatments, primers and topcoats that protect steel, aluminum and magnesium from corrosion. The coatings are economical, easy to use, and provide excellent corrosion resistance compared to state‐of‐the art offerings. “Our thin, double coat solution for zinc‐plated and HDG steel represents a significant advancement in the state‐of‐the‐art that could eliminate the need for using thicker primers and topcoats,” said Dr. Fred Allen, President of the Anticorrosion Coatings Division at NEI Corporation. “The market focused activities of NEI are a key to serving the needs of customers who require high‐performance anticorrosion coatings. Our goal is to engage customers as partners in developing new corrosion‐resistant coating products.”

About NEI Corporation 

Founded in 1997, NEI Corporation develops, manufactures, and distributes nanoscale materials for a broad range of industrial customers around the world. NEI’s products include advanced protective coatings, high performance battery electrode materials, and specialty nanoscale materials for diverse applications. NEI has created a strong foundation in the emerging field of nanotechnology that has enabled the company to become a leader in selected markets. The company headquarters is based in Somerset, NJ.

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