PROTECTIVE LINING FOR ABRASION RESISTANT SERVICE AT HIGHER TEMPERATURES

Description

Siloxirane® 2431 is an abrasion resistant heat cured polymer lining system. Siloxirane 2431 is a tough, flexible lining designed to handle the abrasiveness of coal, ore, plastic pellets and other media.

Siloxirane 2431 has excellent chemical resistance capable of withstanding the corrosive attack that normally comes with media handled.

Siloxirane 2431EA is for extreme abrasion resistance, modified for services handling fly-ash, oxides, crystals and other abrasive type slurries at temperatures up to 400° F (204° C). Build up to 125 mils by trowelling.

Application Highlights

• Can be applied to pitted and/or corroded steel surfaces — surface tolerant
• Very high abrasion resistance
• High build
• Force cured system at 300° F (150° C)
• Low VOC - 102 grams/L (0.85 lbs. per gallon)
• Excellent adhesion
• Flexible to take vibration and twisting
• Easily patched by maintenance personnel
• Steam cleanable
• Complies with FDA 21 CFR 175.300
• Resists Hydroblasting

Chemical Resistance

Sulfuric acid to 98%, most solvents including methylene chloride, MEK, methanol, gasohol, distilled water, inorganic acids, dilute organic acids and alkalis. Ideal for corrosive vapor environments.

Industry Applications:

• Slurry pipes
• Ducts
• Pumps
• Coal shutes, etc.
• Bag Houses

Typical Properties

	Color (Normal)	Gray
	Weight/Gallon	12.5 lbs.
	V.O.C. Level/Gal.	102 grams/L (0.85 lbs./gal.)
	Lead Content	Zero
	Pot Life	120 minutes @ 75° F (24° C)
	Viscosity Reduction	Reduce with Toluene or Xylene
	Flash Point	127° F (53° C)
	Solids by Volume	91.0%
	Solids by Weight	97.0%
	Chromate Content	Zero
	Practical Coverage (sq. ft. per gallon)	70
	Recommended Film Thickness (dry) mils	22 mil average
	Shelf Life	1 year min at 50-90° F (10-32° C)

Superior Corrosion and Erosion Resistance Performance
Chemical Resistance Test
See the APC Chemical Resistance Tables for more complete chemical listings.

Abrasion Resistance
Taber Abrasion Test ASTM D4060 C-17 WHEEL Comparison of Siloxirane 2431 vs. Various Linings

Physical Properties

	Tensile Strength (@75° F) (ASTM D538)	13,240 p.s.i.
	Flexural Strength	13,443 p.s.i.
	Flexural Modulus (ASTM D790)	979 k.s.i.
	Water Absorption (30 Days @88° F) (ASTM D570)	0.09%
	Permeability (Vapor Transmission of Water for 7 days)	0.0000 gm. (per sq. ft. at 90° C per 7 days per inch thickness)
	Coefficient of Thermal Expansion -50° C to 150° C (ASTM D696)	19 (in./in./°C x 10-6)
	Elongation (75° F)	6.8%
	Hardness	80-85 Barcol
	Impact Resistance (ASTM D2794)	110 in/lbs
	U.V. Light Resistance (ASTM G53)	40+ years

Application Data
Note: The following application data is provided as a general guide only. Only full detailed application specifications are to be used during actual application of the Siloxirane 2431 system.

Surface Preparation
Grit blast to SSPC-SP5 (Nace #1, SA3) White Metal finish. Three to four mil (75-100 micron) blast profile desired.

Mixing Instructions
Material is supplied in two containers as a unit. Always mix a complete unit in the proportions supplied.
(1) Thoroughly mix the contents of Part A with a power agitator until uniform consistency and color is obtained. Be sure that any solids that may have settled through storage have been put back in
suspension.
(2) Slowly combine the contents of the activator with the previously mixed Part A.
(3) Thoroughly mix the two parts until a uniform consistency and color is obtained.

Clean Up Solvent
Acetone, Toluene, Xylene

Limitations
Apply when the air and surface temperatures are above 60° F. Surface temperatures must be at least 5° F above the dew point. For optimum application properties, bring material to 70-90° F prior to mixing and application. Increased temperatures will result in shorter pot life.

Application
Airless spray equipment with minimum 60:1 pump ratio @80-100 lbs. to achieve 2500-3000 p.s.i. tip pressure. Reverse-A-Clean tip .019 to .023, with 3/8" fluid hose, 1/4” by 6’ whip hose, with a maximum of 100 linear feet. This coating is a low VOC compliant material. If shop conditions require a viscosity adjustment, thin with Xylene or Toluene.

Cure Time And Temperature
Forced Hot Air - electrically heated air or propane or natural gas combustion heated air only.
6 hours at minimum 250°F (122°C)
All temperatures are substrate temperatures.
Contact APC for detailed heat cure requirements.

Coverage
Practical at recommended film thickness (Avg 22 mils DFT) - 65-70 square feet per gallon.

Handling Precautions
Solvents and chemicals are contained in this product. Consult the Material Safety Data Sheet for details. Adequate safety and health precautions should be taken during handling, application and drying of this product. The material should be applied under local, state, federal regulations and in accordance with OSHA and ANSI bulletins on safety requirements.

The furnishing of the information contained herein does not constitute a representation by Advanced Polymer Coatings, Ltd. (APC) that any product or process is free from patent infringement claims of any third party, nor does it constitute the grant of a license under any patent of APC or any third party. APC assumes no liability for any infringement which may arise out of the use of the product. APC warrants that its products meet the specifications which it set for them. APC DISCLAIMS ALL OTHER WARRANTIES and relating to the products and DISCLAIMS ALL WARRANTIES RELATING TO THEIR APPLICATION expressed or implied INCLUDING but not limited to warranties of MERCHANT ABILITY AND FITNESS for particular purpose. Receipt of products from APC constitutes acceptance of the terms of the Warranty; contrary provisions of purchase orders not withstanding. In the event that APC finds that products delivered are off-specification, APC will at its sole discretion, either replace the products or refund the purchase price thereof. APC’s choice of one of these remedies shall be Buyer’s sole remedy. APC will under no circumstances be libeled upon for consequential damages except in so far as liability is mandated by law. APC will deliver products at agreed upon times in so far as it is reasonably able to do so, but APC shall not be liable for failure to deliver on time when the failure is beyond its reasonable control.

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