Carboline Plasite 4300 is a four-component, vinyl ester resin combined with special curing system and inert flake pigment to provide outstanding chemical and physical properties. Intended for use as a high chemical-resistant thick film for tank lining service and as a maintenance coating for severe exposure.

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• Features and Benefits
• Product Specification
• Drying Times
• Surface Preparation
• Application Methods
• Application Conditions
• Health and Safety

Features and Benefits

• Exceptional resistance to inorganic and organic acids
• Thick film for tank lining service
• Excellent abrasion resistance and hardness
• Excellent caustic resistance

Product Specification

*Note: Above tests were conducted on film cured at 65.6°C

Drying Times

• The coating may be applied at substrate temperatures as low as 16°C, the substrate temperature must be raised to at least 21°C within 12 hours and held until coating surface is tack-free (approximately 10 hours) to avoid possible loss of cure
• A minimum of 21°C surface temperature is required to obtain polymerization of this coating

• Prior to raising the metal to the force curing temperature, it is necessary that an air-dry time of 2 to 5 hours at temperatures from 21°C to 38°C be allowed
• After the air-dry time has elapsed, the temperature should be raised in increments of approximately 17°C every 30 minutes until the desired force curing metal temperatures are reached
• Any moisture from condensation of any source will kill the cure on freshly applied coating before it reaches a “non-tacky” stage

Surface Preparation

General

• Surfaces must be clean and dry
• Employ adequate methods to remove dirt, dust, oil, and all other contaminants that could interfere with adhesion of the coating

Steel

• Immersion: SSPC-SP10
• Non-Immersion: SSPC-SP6
• Surface Profile: Minimum 4 mil (100 micron) dense, sharp anchor profile free of peening, as measured by ASTM D 4417. Defects exposed by blasting must be repaired

Concrete or CMU

• Concrete shall be designed, placed, cured, and prepared per NACE No. 6/SSPC-SP 13, latest edition
• Abrade to remove all laitance, loose concrete, etc. and to create surface profile in accordance with the appropriate ICRI CSP 5-7

Application Methods

• The mixed coating shall be applied utilizing a multi-pass spray system. Apply horizontal and vertical passes with 50% overlap. Special precautions are required at overlaps and welds to eliminate excessive film build. Spray gun should be perpendicular to surface at all times, approximately 14 in (36 cm) from surface
• Coating may be overcoated after initial “set” which will occur normally in 3 to 6 hours at 21°C with proper ventilation. Initial “set” time will decrease as surface temperature increases
• Warning: Refer to RECOATING TIME. When physical contact (foot traffic, scaffolding, etc.) with the previously applied coating is required, a minimum of 10 hours at 21°C substrate and air temperature with ventilation is normally required before proceeding. Previously applied coats must have reached a “non-tacky” state before being exposed to physical contact. This condition will occur in less time as surface temperature increases. Overcoating shall be performed as soon as possible to prevent contamination.
• Applicators may prefer to apply additional coats to achieve the 40mil/1000 microns nominal DFT

Lining Repair

• Clean damaged area, removing all contaminants and loose coating. Abrasive blast substrate to original specification where coating has been exposed to environment and where oxidation is evident. Feather the original coating not less than 2in (5cm) from damaged area. If new coating is physically damaged and has not been in service, repair as shown above. For repairing holidays, sand surface and brush apply proper thickness of coating. Apply coating by brush or spray. Do not apply by brush on areas larger than 1 ft²/0.093 m²
• Warning: Contamination of previously exposed coating film may be detrimental to adhesion of the repair and may affect service life expectancy

Recoating Time

• May be recoated after initial hardening which will occur normally in 3 to 10 hours depending upon the surface temperature. Following coating must be applied within 30 days. Each following coat shall be diluted approximately 2 to 5% with Plasite Thinner 20
• Note: Previously applied coating exposed to an accumulation of 24 hours of sunlight or surface temperatures in excess of 54°C may result in intercoat disbondment. An applied coating film must be topcoated before an accumulation of 24 hours exposure has occurred or special procedures (such as shading with tarps) must be used

Application Conditions

• A minimum surface temperature of 21°C is required to obtain polymerization of the coating system
• Coating can be applied at a surface temperature as low as 16°C but polymerization will be inhibited
• Succeeding coats cannot be applied without damaging the system until the surface temperature rises sufficiently to obtain partial polymerisation
• This will require raising to the minimum surface temperature of 21°C within 12 hours of application
• When surface temperatures are over 38°C, consult Rawlins for special instructions

Health and Safety

Clean Up

• Use Carboline Thinner 71
• In case of spillage, absorb and dispose of in accordance with local applicable regulations

Safety

• Read and follow all caution statements on this product data sheet and on the SDS for this product and use personal protective equipment as directed
• Employ normal workmanlike safety precautions
• Keep container closed when not in use

Ventilation

• When used in enclosed areas, thorough air circulation must be used during and after application until the coating is cured
• The ventilation system should be capable of preventing the solvent vapor concentration from reaching the lower explosion limit for the solvents used
• User should test and monitor exposure levels to ensure all personnel are below guidelines
• If not sure or if not able to monitor levels, use MSHA/NIOSH approved supplied air respirator

Caution

• This product contains flammable solvents
• Keep away from sparks and open flames
• All electrical equipment and installations should be made and grounded in accordance with regulations
• In areas where explosion hazards exist, workers should be required to use non-ferrous tools and wear conductive and non-sparking shoes