Sikafloor® -381 2-part epoxy coating, highly chemically resistant and mechanically resistant
发布时间：2023/05/21
Product Data Sheet
Edition 03/03/2012 EN
Sikafloor® -381
1
Sikafloor® -381
Sikafloor® -381
2-part epoxy coating, highly chemically resistant
and mechanically resistant
Product
Description
Sikafloor® -381 is a 2-part self-smoothing epoxy coating, highly chemically and
mechanically resistant
Uses
Chemically and mechanically highly resistant coating for concrete and screed
surfaces in bund areas for protection against water contaminating liquids
Characteristics /
Advantages
High chemical resistance
High mechanical resistance
Liquid proof
Abrasion resistant
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.
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
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.
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)
Construction2
2/5
Sikafloor® -381
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
wearing course: 1 x Sikafloor® -381 filled with quartz sand
Smooth wearing course (vertical areas):
Smooth wearing course: 1 x Sikafloor® -156
Wearing course: 2 x Sikafloor® -381 + Extender T
Broadcast system with slip resistance:
Primer: 1 x Sikafloor® -156
Wearing course: 1 x Sikafloor® -381 broadcast to excess with
silicon carbide or quartz sand
Seal coat: 1 x Sikafloor® -381 + 5 wt.-% Thinner C
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
1.8 kg/m²/mm
Binder + quartz sand
Consumption / Dosage
Wearing course
horizontal areas
(1.8 ~2.8 mm)
Sikafloor® -381 filled
with quartz sand 0.1
- 0.3
10 - 15°C: without filling
15 - 20°C: 1 : 0.1 pbw (1.65 + 0.15
kg/m²)
20 - 30°C: 1 : 0.2 pbw (1.5 + 0.3 kg/m²)3
3/5
Sikafloor® -381
Wearing course
vertical areas
(Film thickness ~ 1.5
mm)
Sikafloor® -381
+ 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 ,
broadcast to excess
with silicon carbide
0.4 - .0.7 mm
Silicon Carbide 0.5 - 1.0 mm
(5 - 6 kg/m²)
Seal coat
(on broadcast areas
only)
Sikafloor® -381
+ 5 wt.-% Thinner C
0.75 - 0.85 kg/m²
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
Content
< 4% pbw moisture 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 4
4/5
Sikafloor® -381
achieve a consistent mix.
Over mixing must be avoided to minimise air entrainment.
Mixing Tools
Sikafloor® -381 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.
Wearing course (horizontal areas):
Sikafloor® -381 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 , mixed with 2.5 - 4 wt.-% Extender T, has to be
applied by trowel. after the first layer of Sikafloor® -381 have cured, apply the
second layer of Sikafloor® -381, mixed with 2.5 - 4 wt.-% Extender T, by trowel.
Wearing course with slip resistance:
Sikafloor® -381 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 + 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
Before applying Sikafloor® -381 on Sikafloor® -156 allow:
Substrate temperature Minimum Maximum
+10°C 24 hours 4 days
+20°C 12 hours 2 day
+30°C 6 hours 1 day
Before applying Sikafloor® -381 on Sikafloor® -381 allow:
Substrate temperature Minimum Maximum
+10°C 24 hours 48 hours
+20°C 18 hours 24 hours
+30°C 6 hours 12 hours
Waiting Time /
Overcoating
Times are approximate and will be affected by changing ambient conditions,
particularly temperature and relative humidity.
Notes on Application /
Limitations
This product may only be used by experienced professionals.
Do not apply Sikafloor® -381 on substrates with rising moisture.
Do not blind the primer.
Freshly applied Sikafloor® -381 must be protected from damp, condensation and
water for at least 24 hours.
Avoid puddles on the surface with the primer. 5
5/5
Sikafloor® -381
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
For exact colour matching, ensure Sikafloor® -381 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 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.
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.
Construction
Construction