Chemolac 300
Chemolac 300 is a strong high performance chemical
resistant novolac epoxy system.
Product Description
Chemolac 300 is a two-component, high solids, novolac epoxy with outstanding chemical resistance. Chemolac 300 can be applied directly to the primed
substrates as a high-performance topcoat.
Applications
- Chemolac 300 is specially formulated for a highly aggressive chemical environment
- For use on concrete, cementitious mortar, epoxy mortars, and steel substrates.
- For protective lining of storage tanks, ETP, silos, and bund areas
- As an anti-corrosion coating in food and beverage processing plants, sewage treatment plants, chemical and pharmaceutical plants, bottling plants etc.
Salient Features
- Outstanding Resistance to many chemicals, acids and alkalis.
- Excellent Self levelling and anti-sag properties
- Superior Adhesion to Concrete and steel
- Outstanding Mechanical Strength and Abrasion Resistance
- Value for Money
Mechanical/Physical properties
| Property | Test Method | Value and Unit |
|---|---|---|
| Mixing Ratio | NA | Pre-weighed kit to cover 10–12 sq.m area @ 200–250 micron thickness |
| Finish | CPI* 1001 | Non porous, Smooth, Glossy |
| Pot Life @ 30°C | CPI 1002 | 30–35 minutes |
| Surface Dry | CPI 1002 | 6 Hours |
| Hard Dry | CPI 1002 | 24 Hours |
| Full Cure | CPI 1002 | 72 Hours |
| Compressive Strength | ASTM C 579 | >600 Kg/cm² |
| Flexural Strength | ASTM C 580 | >400 Kg/cm² |
| Tensile Strength | ASTM C 307 | >200 Kg/cm² |
| Pull off Adhesion Test | ASTM D 4541 | Concrete Failure @ 18 Kg/cm² |
| Abrasion Resistance [Taber] | ADTM D 4060 | 50 mg loss |
| Shore Hardness | ASTM D 2240 | D 80 |
| Service Temperature | CPI 1122 | 0–50 °C |
| Shelf Life | — | 12 months in the original unopened container when stored between 10–30 °C |
Chemical Data
Please refer chemsol’s chemical resistance chart for chemolac 300
Method of Application
All Chemsol Products are recommended to be applied only by Approved Applicators and should be handled after using proper PPEs like Gloves, mask, goggles, etc.
Application conditions
Substrate temperature: 10-40°C
Substrate moisture content: - <5%
Relative humidity: 8o%max
Note: The substrate temperature must be at least 30 °C above the prevalent dew point temperature to reduce chances of condensation on the substrate
Substrate Quality
The concrete substrate must be sound and of sufficient compressive strength (minimum 200 Kg/cm2) with a minimum pull-off strength of 15 Kg/cm2. The substrate must be clean, dry, and free of all contaminants such as dirt, oil, grease, coatings and surface treatments, etc. If required, apply a test area first.
Substrate Preparation
Substrate must be prepared mechanically using abrasive blast cleaning, scarifying, or grinding equipment to remove cement laitance, rust and achieve an open Textured surface. Remove weak concrete and expose surface defects such as blowholes and voids. Repairs to the substrate, filling of blowholes/voids, and surface levelling must be carried out using appropriate products. Ensure that the dust, loose and friable material is completely removed from all surfaces by brush and vacuum before application of the product.
The substrate has to be primed or levelled with Chemprime in order to achieve an
even surface. Allow the primer to cure for 5-6 hours. After this, apply a coat of Chemolac 300 by brush/roller or spray. Wait for 8 hours and repeat the same procedure for the second coat of Chemolac 300.
Mixing
Stir the resin part mechanically. Add colour paste into resin and mix until a uniform colour is achieved. Add hardener to this mixture and stir continuously for 2 minutes with a motorised paint stirrer until a uniform mix has been obtained. Overmixing must be avoided to minimise air entrainment.
Note that the mixture has a stipulated pot life hence the application should immediately commence after mixing the contents.
Curing Schedule
The epoxy curing reaction rate is temperature dependent. Refer to the following table to know how quickly the floor can be brought to service
| Temp. (°C) | Foot traffic | Full cure |
|---|---|---|
| 10°C | 48 hours | 120 hours |
| 20°C | 36 hours | 96 hours |
| 30°C | 24 hours | 72 hours |
Cleaning of Tools
Cleaning of Tools Clean all tools and application equipment with thinner PT 36 immediately after use. Hardened and/or cured material can only be removed mechanically.
Packing
Chemolac 300 is available in pre pre-weighed kit which covers 10-12 sq.m area with an approximate thickness of 200-250 microns
Storage conditions
Store in a dry and covered shed between 5 °C to 30 °C, away from sources of heat and naked flame.
Handling & Safety
Keep the containers tightly sealed when not in use. Avoid skin contact and inhalation of fumes (if any). While spraying, it is advised to wear a mask. If it
comes in contact with the body, wash affected parts with plenty of water. In case of persistent irritation, contact a physician.
*Disclaimer: The Information provided is based on our experience, thorough investigations & sophisticated testing methods, but due to the vast number of applications and usage methods, Chemsol Polymer Industries cannot accept responsibility of any kind for any particular result. It is the responsibility of the user to verify the suitability of the product for their end use and in accordance with the rules and regulations of that country /territory. All information provided pertaining to our products should be treated only as a guidance tool without any guarantee or warranty of any sorts.
* All CPI test methods are our scientifically designed internal test methods which can be shared upon
