REPORT - Chemco International · ratio to achieve the specific Barcol Hardness. ... Railway...

REPORT

CHEMCO PROTECTIVE COATINGS

GLASSFLAKE SYSTEMS

February 2016

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Contents Page

INTRODUCTION 3

TECHNICAL ADVANTAGES 5

GLASSFLAKE TECHNOLOGY – LIFETIME SOLUTION BENEFITS 6

INDUSTRIES 7

APPLICATIONS AND PHOTOS 8

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INTRODUCTION

Glassflake is a severe service coating and lining which utilizes 1/64” (0.4 mm), 1/32” (0.8 mm) or 1/8” (3.2 mm) chemical grade flaked glass. When incorporated into polyester, vinyl ester, Novolac vinyl ester, Novolac epoxy and other types of resins, the glassflakes overlap and stratify to create a maze-like structure (Fig. 1) that is 5 – 20 times more impermeable than resin alone. This also provides greatly improved elongation and compression qualities, allowing the coating to move with the substrate during temperature variations, as well as, creating superior abrasion resistance.

Fig. 1 Showing Glassflake structure on top of the substrate

Fig. 2 is comparing traditional coating systems with Glassflake technology, as it shows with traditional coatings the corrosion can reach the substrate easier and faster than Glassflake coating, it is obvious that the larger Glassflake makes greater protection (Fig. 3).

Fig. 2 Comparing Glassflake and traditional coating systems

Fig. 3 Glassflake Protection comparison

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Glassflake filled coatings have proven to be most suitable for applications where good corrosion resistance and excellent mechanical properties are required. They have an outstanding corrosion resistance to a wide range of acids, alkalis, solvents and salt solutions and they also have excellent thermal stability.

Fig. 4 Typical Glassflake coatings

Glassflake coatings are widely used for applications such as chemical process equipment including process vessels, storage tanks, pipes and ducts.

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TECHNICAL ADVANTAGES

Glassflake coatings can be based on variety of resins technology, like Polyester, Vinyl ester and Epoxy. They combine the special benefit of each base resin with additional Glassflake properties.

Corrosion

Chemco’s coatings provide a solid barrier against the attack of corrosive ions over a pH range of 1 to 14.

Abrasion

With a minimum Barcol hardness of 42 and a thermal coefficient of expansion similar to that of steel or concrete, the coating withstands mechanical damage without any undercutting. The following table shows the comparison of Glassflake ratio to achieve the specific Barcol Hardness.

Flake ratio Water absorption Boiled water

absorption (%) Barcol

Hardness

0% 0.19 0.57 32 25% 0.06 0.23 46 45% 0.03 0.23 48

Erosion

The Chemco coating’s exhibit excellent resistance to erosion due to its outstanding mechanical properties. It fills pits and cavities to extend service life substantially.

Adhesion

Superior adhesion is achieved by the surface tension effect of the screened particles of glassflake. The coating does not delaminate, peel or blister. If the metal flexes within its elastic limits, “Chemco Coatings” will adhere.

Electrolysis

Galvanic corrosion is minimised by the superior dialectic strength of the coating.

Machining

“Chemco Coatings” can be applied to any thickness without cracking or crazing. Pumps, valves and impellers can then be machined with conventional metal tools.

Repair

In case of heavy damage, the coating can be easily repaired by cleaning the damaged area, feathering the surrounding coating and recoating to form the original long-lasting protection.

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CHEMCO GLASSFLAKE TECHNOLOGY – LIFETIME SOLUTION BENEFITS

Our Glassflake coatings provide maximum protection from the most hazardous environments. Capable of restoring condemned plant and equipment to “as new” condition, they are a cost-effective, lifetime solution. We achieve this through our breath of technical experience in R&D, manufacturing and application.

Our unique range of definitive glassflake brands provides the following benefits:

Reliability

Proven maintenance-free protection; they have been used throughout the world for more than 30 years with no failures.

Savings

Less number of coats required. Lasts longer and requires considerably less maintenance when compared to paint systems.

Long life

Guaranteed for more than 20 years.

Performance

Outstanding resistance to chemical corrosion (pH 1-14), temperature (up to 130 °C in immersed conditions), abrasion and erosion makes our brands the first choice.

Durability

They can withstand high impact and mechanical stresses due to the unique chemical bonding and anchoring effect of the Glassflake to the peaks and troughs of the substrate.

Safe

100% solids; our systems exceed environmental legislation.

Promise

We pledge to solve all your excessive corrosion problems. Our reputation is founded on delivering products of the highest quality via our dedicated team of specialists.

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INDUSTRIES

Industries benefiting from Chemco protective coatings are as follows:

Marine

Tanks, Hulls, Decks, Rudders, Thrusters tunnels

Nuclear & Power generation

Scrubbers, Condenser water boxes, Water pipes, Tanks, Floors, Pumps, Valves

Chemical

Acid/Caustic tanks, Vessels, Floors, Neutralisation tanks

Oil, Gas & Petro-chemical

Separators, Tanks, Splash zones, Pipe work

Food & Agricultural

Storage tanks, Effluent tanks, Juice, Wine and beer tanks, Sugar processing, Milking parlours, Floors

Water & Sewerage

Potable water tanks, Clarification tanks, Pipes, Desalination plants

Transport

Railway carriage, Tankers

Steel

Pickling line, Tanks, Structures, Floors, Pumps

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APPLICATIONS AND PHOTOS

As we provide a wide range products for different industries, the following pictures aim to show our ability to handle a wide range of applications.

Inlet and outlet cover before and after applying Chemco’s coating

Before After

Agricultural storage tank

Steel pipes

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Concrete pipes

Potable water tank

Wood processing vibration screen

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Reactor ducting for chemical plant

Turbine impeller

Acid transportation tanks

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Beer tank

Pump impellers

Condenser water box for power industry

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Barge

Diffuser and Helices in sugar processing

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