Sikafloor® -381 AS 2-part epoxy coating, chemically highly resistant
发布时间：2023/05/21
Product Data Sheet
Edition 03/03/2012 EN
Sikafloor® -381 AS
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Sikafloor® -381 AS
Sikafloor® -381 AS
2-part epoxy coating, chemically highly resistant
and electrostatically conductive
Product
Description
Sikafloor® -381 AS is a two part, electrostatically conductive self-smoothing,
coloured epoxy resin with very high chemical resistance.
Uses
Chemically highly resistant coating for concrete and screed surfaces in bund
areas for the protection against water contaminating liquids (according to
resistance table)
Electrostatically conductive wearing layer for areas subject to chemical and
mechanical exposure in production and storage facilities
Characteristics /
Advantages
Very high chemical resistance
High mechanical resistance
Impervious to liquids
Abrasion resistant
Electrostatically conductive
Slip resistant surface possible
Test
Approval / Standards
Conforms to the requirements of DIN IEC 61340-4-1 (Internal Test)
Product Data
Form
Appearance / Colours
Resin - part A: coloured, liquid
Hardener - part B: transparent, liquid
Almost unlimited choice of colour shades.
Due to the nature of the carbon fibers providing the conductivity, it is not possible to
achieve exact colour matching. With very bright colours (such as yellow and
orange), this effect is increased. Under direct sun radiation there may be some
discolouration and colour deviation, this has no influence on the function and
performance of the coating.
Packaging
Part A: 21.25 kg containers
Part B: 3.75 kg containers
Part A+B: 25 kg ready to mix units
Bulk packaging:
Part A: 250 kg drums
Part B: 190 kg drums
Storage
Storage Conditions /
Shelf-Life
24 months from date of production if stored properly in original, unopened and
undamaged sealed packaging, in dry conditions at temperatures between +5°C and
+30°C.
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Sikafloor® -381 AS
Technical Data
Chemical Base
Epoxy
Density
Part A: ~ 1.77 kg/l (DIN EN ISO 2811-1)
Part B: ~ 1.04 kg/l
Mixed resin: ~ 1.6 kg/l
All Density values at +23°C.
Solid Content
~ 100% (by volume) / ~100% (by weight)
Electrostatic
Behaviour
Resistance to earth RE
104－106 Ω (IEC 61340-4-1; EN 1081)
Mechanical / Physical
Properties
Compressive Strength
> 80 N/mm² (14 days / +23°C)
(EN 196-1)
Flexural Strength
> 55 N/mm² (14 days / +23°C)
(EN 196-1)
Bond Strength
> 1.5 N/mm² (failure in concrete) (ISO 4624)
Shore D Hardness
82 (7 days / +23°C)
(DIN 53 505)
Abrasion Resistance
40 mg (CS 10 wheel / 1000 g / 1000 cycles) (8 days / +23°C) (DIN 53 109)
(Taber Abrader Test)
Resistance
Chemical Resistance
Resistant to many chemicals. Please ask for a detailed chemical resistance table.
Exposure*
Dry heat
Permanent
+50°C
Short-term max. 7 d
+80°C
Short-term max. 12 h
+100°C
Thermal Resistance
Short-term moist/wet heat* up to +80°C where exposure is only occasional
(i.e. during steam cleaning etc.)
*No simultaneous chemical and mechanical exposure.
System
Information
System Structure
Self-smoothing system (horizontal areas):
Primer: 1 x Sikafloor® -156
Earthing connection: Sikafloor® Earthing Kit
Conductive coat: 1 x Sikafloor® -220 W Conductive
Conductive wearing course: 1 x Sikafloor® -381 AS filled with quartz
sand
Smooth wearing course (vertical areas):
Primer: 1 x Sikafloor® -156
Wearing course: 1 x Sikafloor® -381 AS + Extender T
Earthing connection: Sikafloor® Earthing Kit
Conductive coat: 1 x Sikafloor® -220 W Conductive
Conductive wearing course: 1 x Sikafloor® -381 AS + Extender T
Broadcast system with slip resistance:
Primer: 1 x Sikafloor® -156
Earthing connection: Sika® Earthing Kit
Conductive coat: 1 x Sikafloor® -220 W Conductive
Conductive wearing course: 1 x Sikafloor® -381 AS broadcast to
excesswith silicon carbide 0.5 - 1.0 mm
Seal coat: 1 x Sikafloor® -381 AS + 5 wt.-% Thinner C 3
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Sikafloor® -381 AS
Note: These system configurations must be fully complied with as
described and may not be changed.
Application Details
Coating System Product Consumption
Primer Sikafloor® -156 0.3 - 0.5 kg/m²
Levelling (optional)
Sikafloor® -156
mortar
Refer to PDS of Sikafloor® -156
Conductive coat
Sikafloor® -220 W
Conductive
0.08 - 0.10 kg/m²
2.5 kg/m²
Binder + quartz sand
Wearing course
horizontal areas
(Film thickness ~ 1.5
mm)
Sikafloor® -381 AS
filled with quartz
sand 0.1 - 0.3
10 - 15°C: without filling
15 - 20°C: 1 : 0.1 pbw (2.3 + 0.2 kg/m²)
20 - 30°C: 1 : 0.2 pbw (2.1 + 0.4 kg/m²)
Wearing course
vertical areas
(Film thickness ~ 1.5
mm)
Sikafloor® -381 AS
+ 2.5 - 4 wt.-%
Extender T
2 x 1.25 kg/m²
1.6 kg/m² Binder without filling
Broadcast system with
slip resistance
(Film thickness ~ 2.5
mm)
Sikafloor® -381 AS,
broadcast to excess
with silicon carbide
0.5 - 1.0 mm
Silicon Carbide 0.5 - 1.0 mm
(5 - 6 kg/m²)
Seal coat
(on broadcast areas
only)
Sikafloor® -381 AS
+ 5 wt.-% Thinner C
0.75 - 0.85 kg/m²
Consumption / Dosage
These figures are theoretical and do not allow for any additional material due to
surface porosity, surface profile, variations in level or wastage etc.
Substrate Quality
The concrete substrate must be sound and of sufficient compressive strength
(minimum 25 N/mm2 ) with a minimum pull off strength of 1.5 N/mm2 .
The substrate must be clean, dry and free of all contaminants such as dirt, oil,
grease, coatings and surface treatments, etc.
If in doubt apply a test area first.
Substrate Preparation
Concrete substrates must be prepared mechanically using abrasive blast cleaning
or scarifying equipment to remove cement laitance and achieve an open textured
surface.
Weak concrete must be removed and surface defects such as blowholes and voids
must be fully exposed.
Repairs to the substrate, filling of blowholes/voids and surface levelling must be
carried out using appropriate products from the Sikafloor® , SikaDur® and SikaGard®
range of materials.
The concrete or screed substrate has to be primed or levelled in order to achieve
an even surface.
High spots must be removed by e.g. grinding.
All dust, loose and friable material must be completely removed from all surfaces
before application of the product, preferably by brush and/or vacuum.
Application
Conditions /
Limitations
Substrate Temperature
+10°C min. / +30°C max.
Ambient Temperature
+10°C min. / +30°C max.
Substrate Moisture
< 4% pbw moisture content. 4
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Sikafloor® -381 AS
Content
Test method: Sika® -Tramex meter, CM - measurement or Oven-dry-method.
No rising moisture according to ASTM (Polyethylene-sheet).
Relative Air Humidity
80% r.h. max.
Dew Point
Beware of condensation!
The substrate and uncured floor must be at least 3°C above dew point to reduce
the risk of condensation or blooming on the floor finish.
Application
Instructions
Mixing
Part A : part B = 85 : 15 (by weight)
Mixing Time
Prior to mixing, stir part A mechanically. When all of part B has been added to part
A, mix continuously for 2 minutes until a uniform mix has been achieved.
When parts A and B have been mixed, add the quartz sand 0.1 - 0.3 mm and mix
for a further 2 minutes until a uniform mix has been achieved.
To ensure thorough mixing pour materials into another container and mix again to
achieve a consistent mix.
Over mixing must be avoided to minimise air entrainment.
Mixing Tools
Sikafloor® -381 AS must be thoroughly mixed using a low speed electric stirrer
(300 - 400 rpm) or other suitable equipment.
Application Method /
Tools
Prior to application, confirm substrate moisture content, relative humidity and dew
point.
If > 4% pbw moisture content, Sikafloor® EpoCem® should be applied as a T.M.B.
(temporary moisture barrier) system.
Levelling:
Rough surfaces need to be levelled first because varying thickness of the
Sikafloor® -381 AS wearing course will influence the conductivity. Therefore use
Sikafloor® -156 levelling mortar (see PDS).
Placing of earthing plates:
See below “Notes on Application / Limits”.
Application of Sikafloor® conductive coat:
See PDS of Sikafloor® -220 W conductive.
Wearing course (horizontal areas):
Sikafloor® -381 AS is poured, spread evenly by means of a serrated trowel. Roll
immediately in two directions with a spiked roller to ensure even thickness.
Wearing course (vertical areas):
The first layer of Sikafloor® -381 AS, mixed with 2.5 - 4 wt.-% Extender T, has to be
applied by trowel. After placing of the earthing plates and application of the
conductivity layer, apply the second layer of Sikafloor® -381 AS, mixed with
2.5 - 4 wt.-% Extender T, by trowel.
Wearing course with slip resistance:
Sikafloor® -381 AS is poured, spread evenly by means of a serrated trowel and the
fresh layer is broadcasted to excess with silicon carbide 0.5 - 1.0 mm. After final
drying the surplus silicon carbide must be swept off and the surface must be
vacuumed. The seal coat (Sikafloor® -381 AS + 5 wt.-% Thinner C) has to be
applied evenly by short-piled roller or squeegee.
Cleaning of Tools
Clean all tools and application equipment with Thinner C immediately after use.
Hardened and/or cured material can only be mechanically removed.
Temperatures Time
+10°C ~ 60 minutes
+20°C ~ 30 minutes
+30°C ~ 15 minutes
Potlife 5
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Sikafloor® -381 AS
Before applying Sikafloor® -220 W Conductive on Sikafloor® -381 AS allow:
Substrate temperature Minimum Maximum
+10°C 48 hours 3 days
+20°C 24 hours 2 day
+30°C 12 hours 1 day
Before applying Sikafloor® -381 on Sikafloor® -156 allow:
Substrate temperature Minimum Maximum
+10°C 24 hours 4 days
+20°C 12 hours 2 days
+30°C 6 hours 1 day
Before applying Sikafloor® -381 AS on Sikafloor® -220 W Conductive allow:
Substrate temperature Minimum Maximum
+10°C 24 hours 7 days
+20°C 15 hours 5 days
+30°C 10 hours 4 days
Waiting Time /
Overcoating
Times are approximate and will be affected by changing ambient conditions,
particularly temperature and relative humidity.
This product may only be used by experienced professionals.
Do not apply Sikafloor® -381 AS on substrates with rising moisture.
Do not blind the primer.
Freshly applied Sikafloor® -381 AS must be protected from damp, condensation and
water for at least 24 hours.
Avoid puddles on the surface with the primer.
Only start application of Sikafloor® conductive coat after the priming coat has dried
tack-free all over. Otherwise there is a risk of wrinkling or impairing of the
conductive properties.
Tools
Recommended supplier of tools:
PPW-Polyplan-Werkzeuge GmbH, Phone: +49 40/5597260, www.polyplan.com
Serrated trowel for smooth wearing layer:
e.g. Large-Surface Scrapper No. 565, Toothed blades No. 25
Layer thickness of wearing course: approx. 1.5 mm. Excessive thickness (more
than 2.5 kg/m²) causes reduced conductivity.
Before the application of a conductive flooring system, a reference area has to be
applied. This reference area must be assessed and accepted from the
contractor/client. The desired result and method of conductivity measurement must
be stated in the Specification and Method Statement. The number of conductivity
measurements is strongly recommended to be as shown in the table below:
Applied floor area Number of measurements
< 10 m² 1 measurement / m²
10 - 100 m² 10 - 20 measurements
Notes on Application /
Limitations
> 100 m² 10 measurements / 100m² 6
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Sikafloor® -381 AS
The measuring points must have a distance of at least 50 cm to the next measuring
point. In case of a measurement lower/higher than required, an additional
measurement has to be carried out within 50 cm of the point with the insufficient
result.
Placing of earthing plates:
If the Sikafloor® Earthing Kit conductor system (system of anchored brass-plates
with stable earth connection) is applied, the instructions for use have to be followed
exactly. Every earthing point is able to conduct 300 m². Ensure the longest distance
of each point in the area is max. 10 m to the next earthing point. Clean the earthing
spots carefully. For longer distances, additional earthing plates have to be placed. If
site conditions do not allow placing of additional earthing points, longer distances
(>10 m) have to be bridged with copper tapes. The earthing spots have to be
connected to the ring-mains. This work must be executed and approved by an
electrical engineer and in accordance with any relevant regulations.
Numbers of earth connections:
Per room al least 2 earthing points. The optimum number of earth connections
depends on the local conditions and should be specified with documents.
The incorrect assessment and treatment of cracks may lead to a reduced service
life and reflective cracking - reducing or breaking conductivity.
For exact colour matching, ensure Sikafloor® -381 AS in each area is applied from
the same control batch numbers.
Under certain conditions, underfloor heating or high ambient temperatures
combined with high point loading, may lead to imprints in the resin.
If heating is required do not use gas, oil, paraffin or other fossil fuel heaters, these
produce large quantities of both CO2 and H2O water vapour, which may adversely
affect the finish. For heating use only electric powered warm air blower systems.
Curing Details
Temperature Foot traffic Light traffic Full cure
+10°C ~ 24 hours ~ 3 days ~ 10 days
+20°C ~ 18 hours ~ 2 days ~ 7 days
+30°C ~ 12 hours ~ 1 day ~ 5 days
Applied Product ready
for use
Note: Times are approximate and will be affected by changing ambient conditions.
Cleaning /
Maintenance
Methods
To maintain the appearance of the floor after application, Sikafloor® -381 AS must
have all spillages removed immediately and must be regularly cleaned using rotary
brush, mechanical scrubbers, scrubber dryer, high pressure washer, wash and
vacuum techniques etc using suitable detergents and waxes
Value Base
All technical data stated in this Product Data Sheet are based on laboratory tests.
Actual measured data may vary due to circumstances beyond our control.
Local Restrictions Please note that as a result of specific local regulations the performance of this
product may vary from country to country. Please consult the local Product Data
Sheet for the exact description of the application fields.
Health and Safety
Information
For information and advice on the safe handling, storage and disposal of chemical
products, users shall refer to the most recent Material Safety Data Sheet containing
physical, ecological, toxicological and other safety-related data.7
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Sikafloor® -381 AS
Notes:
The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in
good faith based on Sika's current knowledge and experience of the products when properly stored, handled and applied under
normal conditions in accordance with Sika’s recommendations. In practice, the differences in materials, substrates and actual
site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability
arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written
recommendations, or from any other advice offered. The user of the product must test the product’s suitability for the intended
application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties
must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the
most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request.
Sika (China) Ltd.
No.28 Jingdong Road, Suzhou Industrial Park,
JiangSu,P.R.China
Postal Code: 215121
ISO 9001: 2008 ISO 14001:2004
Certificate No.:CC3576 Certificate No.:CC3577
The product is manufactured under a HKQAA
ISO9001/ISO14001
certified quality/environmental management system.
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