Chemstat-ESD
5-component, self-leveling, electrostatic dissipative, epoxy-based flooring system.
Product Description
Chemstat ESD is a five-component epoxy floor coating system formulated to impart electrostatic control properties to a cement or concrete floor. It offers attractive, durable, seamless floors with ESD protection.
Uses
- – Specially recommended for areas that require a static dissipative surface. Application areas include;
- Storage silos, testing laboratories.
- Electronics manufacturing and maintenance
- Data processing facilities, semiconductor assembly areas, etc.
- Clean rooms, Aircraft hangars, pharmaceuticals, etc.
Chemical Resistance
Excellent resistance is observed against distilled water, detergent solutions, alkalis and acids.
Product Data
| Chemstat ESD [R] Resin | Hazy liquid |
| Chemstat ESD [H] Hardener | Transparent liquid |
| ESD Aggregate | Whitish powder |
| Pigment | Colour paste |
| Antistats | Blackish paste |
Storage Conditions/Shelf Life
12 months from date of mfg. if stored properly in undamaged seal packaging, at temperature between 5°C-30°C. It should be kept in a cool, well-ventilated area, away from heat, direct sunlight, sparks and children.
Salient Features
- Complies with general ESD requirements as per ANSI/ESD 20.20 standards.
- Good mechanical and chemical resistance.
- Easy application, durable.
- Easy cleanability.
- Constant conductivity readings over a prolonged period.
- Available in various shades.
Mechanical/Physical properties
| Property | Test Method | Value and Unit |
|---|---|---|
| Mixing Ratio | NA | Pre-weighed kit to cover 9–10 sq.m area @ 1200 micron thickness |
| Finish | CPI* 1001 | Non-porous, Glossy |
| Pot Life @ 30°C | CPI 1002 | 30–35 minutes |
| Surface Dry | CPI 1002 | 3 Hours |
| Hard Dry [Open for Foot Traffic] | CPI 1002 | 24 Hours |
| Full Cure [Vehicular Movement] | CPI 1002 | 72 Hours |
Mechanical Properties
| Property | Test Method | Value and Unit |
|---|---|---|
| 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 |
| Electrical Resistance | ASTM F150 | 10⁶ – 10⁹ Ω |
| Shelf Life | — | 12 months in original unopened container when stored between 5°C – 40°C |
Method of Application
All Chemsol Products are recommended to be applied only by Approved Applicators and should be used after using proper PPEs like Gloves, mask, goggles etc.
Substrate Quality
The CDS (clean, dry, sound) test must be conducted before the application of primer to the concrete substrate. The substrate must be free of all contaminants such as dirt, oil, grease, coatings, surface treatments, etc. If in doubt, apply a test area first.
Application conditions
Substrate temperature: 10-40°C
Substrate moisture content: - <5%
Relative humidity: 8o%max
Note: The substrate temperature must be at least 3°C above the prevalent dew point temperature to reduce chances of condensation on the floor.
Substrate Preparation
Concrete substrates must be prepared mechanically using abrasive blast cleaning, scarifying, or grinding equipment to remove cement laitance 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 concrete substrate has to be primed and levelled with Chemprime/ Chembase 150 in order to achieve an even surface and to seal the porosities. Allow the primer to cure for 5-6 hours. After this, depending on the system selected, either apply a screed coat followed by fixing of high adhesion *Chemopper special grade copper tape/ or copper tape can even be directly applied on the primer by omitting the screed coat. The copper tape is then connected securely to the earthing points. Now apply a 2K conductive primer coat of Aquaprime at a DFT of 90-110 microns. This is followed by the application of Chemstat ESD Topcoat as per the guidelines below. (Note: Adhere to the curing schedule of Aquaprime conductive primer before application of topcoat.)
Application of Chemstat ESD Top coat.
Pour the resin part in a 20L bucket and add colour paste to the resin and mix till a uniform colour is achieved. Add hardener to this mixture and stir continuously for 1minute until a homogeneous mass is obtained. Add aggregates to this mixture and continue stirring for a further 1 minute. Now add Antistats paste and stir for 2 minutes with a motorised cowls blade disperser stirrer until a uniform mix is obtained. Overmixing must be avoided to minimise air entrainment. Strictly do not use other type of stirrer as it can damage the structure of Antistats and adversely affect the conductivity.
*Note that the mixture has a stipulated pot life hence the laying should immediately commence after mixing the contents.
Pour the contents onto the floor and spread evenly with the help of a notch trowel, and then roll with a spike roller to de-air and to obtain a uniform thickness.
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
Clean all tools and application equipment with thinner EP140 immediately after use. Hardened and/or cured material can only be removed mechanically.
Packing
Chemstat ESD Resin, Hardener, aggregates, and antistats are available in a pre-weighed kit which covers 9-10 sq m area with an approximate thickness of 1.5 mm.
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 soap and 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 request.
