Product Data Sheet Show all documents

Sikagard®-190

(former MProtect 190)

A two component solvent free high build flexible epoxy polyurethane resin coating system

Sikagard®-190 is a two-component solvent free, liquid epoxy polyurethane resin. The superior adhesion and chemical resistance of the epoxy resin, in combination with the flexibility of polyurethane and water resistant qualities of epoxy produce a system that will provide a high build, ultra dense coating to protect concrete, other cementitious substrates, and metal, against a wide range of aggressive media present in the sewerage environment. The coating will not support the growth of bacteria. Sikagard®-190 in appearance, is smooth, the unique formulation of the system with the aliphatic polyurethane modification exhibit some degree of the flexibility and better resistance to U.V. Sikagard®-190 is high gloss in finish, heavy bodied, ultra dense surface. Hygienic and easily cleaned. Standard colors are light grey, dark grey, black, white, red, green and blue.

  • No primer required.
  • Limited UV resistance.
  • High build coating,
  • Easy application: brush, roller or spray.
  • Economical.
  • Excellent chemical resistance to aqueous media
  • Non-solvented.
  • Excellent broad-spectrum chemical resistance.
  • Abrasion resistant.
  • Seamless finish.
  • Pre-weighed components.
  • Long-term corrosion protection.
Product Data Sheet Show all documents

Usage

Sikagard®-190 is particularly suitable for use in offshore or marine environments and sewerage work applications such as aeration tanks clarifiers and permanent submerged condition where chemical resistance is of paramount importance. Sikagard®-190 is used to provide heavy-duty protective, waterproof, and flexible coating. Uses include the lining of tanks, pipes and ducting, coating concrete, asbestos cement, steel pipes and nonferrous metals.  

Advantages

  • No primer required.
  • Limited UV resistance.
  • High build coating,
  • Easy application: brush, roller or spray.
  • Economical.
  • Excellent chemical resistance to aqueous media
  • Non-solvented.
  • Excellent broad-spectrum chemical resistance.
  • Abrasion resistant.
  • Seamless finish.
  • Pre-weighed components.
  • Long-term corrosion protection.

Packaging

supplied in 10 Liter.

Product Details

Product Information

Composition

Two component, non-toxic, pigmented solvent less epoxy polyurethane resin based compound. D.F.T. 180 to 240 microns/ coat.

Shelf life

Up to 12 months if stored in unopened containers according to manufacturer’s instructions.

Storage conditions

Store under cover out of direct sunlight and protect from extremes of temperature. In tropical climates the product must be stored in an air conditioned environment. Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging. For specific storage advice consult Sika's Technical Services Department.
Technical Information

Tensile strength

9.6 N/mm2                  (BS 2782)

Adhesion in peel

2.2 N/mm²

Shrinkage

0.48mm(1.65%)           (ASTM C531-85)

Water absorption

Nil %                              (ASTM C413-88)

Application

Application Information

Pot Life

30 mins at 30°C 

Tack free time

approx. 4 hours at 35°C
Application steps

SUBSTRATE PREPARATION

The substrate should be a smooth or semi-smooth sound surface such as concrete or metal. It is most important to ensure that thorough surface preparation is undertaken prior to application of the Sikagard®-190 coating.

CONCRETE

 Ensure concrete is free from excessive laitance, grease, oil, curing compound, etc. Ensure concrete is sound, cutting back where necessary and making good using suitable Sika's Solutions SikaEmaco or Sikadur repair systems. Ensure all blow holes and surface imperfections are made good prior to application of the Sikagard®-190 coating. Ensure concrete is at least 28 days old. Contamination by oil, grease, fats etc. must be removed before other forms of preparation begin. Remove laitance to expose blow holes, by light grit blasting.

STEEL 

All previous surface treatments should be removed taking the surface back to base metal. The base metal should be abraded and preferably shot blasted with grit, steel shot or proprietary abrasive. Where shot blasting is impractical pre-treatment may be carried out with pneumatic de-scaling guns, tap hammers, rotary wire brushes or by flame scaling. Cleaning with solvent or a strong detergent is advisable to ensure surface is free from grease etc. Do not allow surface to re-oxidise before application of Sikagard®-190.

 

MIXING

Sikagard®-190 is supplied in two pre-weighed components, base and reactor. No additions or omissions are required. Add reactor contents to the base component and mix thoroughly for using a slow speed drill fitted with a suitable mixing paddle until a uniform streak free color is achieved.

APPLICATION

Sikagard®-190 coating can be applied using good quality rollers or short haired brushes or by airless spray. It is recommended that Sikagard®-190 coating be applied in two coats of contrasting colors to ensure complete coverage.

Prior to the application of each coat the surface should be examined for signs of pin-holing, etc. Where pin?holing is evident these should be filled using Sikadur ADH 2200 thixotropic epoxy resin filler. If the application is delayed more than 16 hours at 40°C or 36 hours at 20°C after the previous coat (the higher the ambient temperature, the shorter the maximum period), then the previous coat must be thoroughly abraded to give an adequate mechanical key and solvent wiped.

AIRLESS SPRAY

For application by airless spray, use a 45:1 or higher ratio pump, minimum 9mm dia. hoses and HD tip 19-23 thou.

OVERCOATING 

Where areas need to be overcoated due to damage etc. it is important that the areas to be treated are well abraded using a stiff rotary wire brush or coarse sand paper to give an adequate key. Completely strip off any unsound coating and proceed with overcoating as for new work.

 

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