Sikaflex®-403 Sealant Overview

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Questions and Answers

What is the maximum percent elongation typically mentioned for movement in internal procedures?

20%

100% (correct)

35%

50%

What does the ASTM C 719 document primarily relate to?

Thermal expansion

Sound insulation

Chemical resistance

Movement in materials (correct)

What is the time frame specified for certain measurements in the document?

4 hours

3 hours

1 hour

2.5 hours (correct)

At what temperature range does the document suggest performing certain internal procedures?

20 to 30 °C Signup and view all the answers

Which of the following is NOT a typical percentage of movement as defined by involved parties?

45% Signup and view all the answers

What is the defined travelling speed mentioned in the criteria?

3.18 mm/hour Signup and view all the answers

What is the failure criterion governed by ASTM C 920?

50% failure rate Signup and view all the answers

How long is the maximum duration required for the test based on the class?

47 – 54 days Signup and view all the answers

What is emphasized regarding statements made about the product?

They should be fair and clear. Signup and view all the answers

What is the significance of stating no specific class in compliance?

It indicates a broader compliance. Signup and view all the answers

What temperature range is presented for testing?

-30 to 70 °C Signup and view all the answers

What does the ASTM C 920 standard state about movement?

50% total movement Signup and view all the answers

What is the requirement for formulation according to the presentation?

It should comply with ASTM C 920. Signup and view all the answers

What is one main advantage of Sikaflex®-403 Tank & Silo in terms of sustainability?

It helps protect ground water from leakage through joints. Signup and view all the answers

Which property makes polyurethane (PU) technology preferable for the Sikaflex®-403 sealant?

Long open time and non-sag application. Signup and view all the answers

How long did the approval and certification process for Sikaflex®-403 take?

2 years Signup and view all the answers

Which of the following is NOT an application area for Sikaflex®-403 Tank & Silo?

Residential plumbing installations. Signup and view all the answers

What is a unique characteristic of Sikaflex®-403 Tank & Silo regarding its application?

It can cure effectively with minimal humidity access. Signup and view all the answers

What is the overall performance benefit of using Sikaflex®-403 Tank & Silo?

Significantly increased durability and temperature resistance. Signup and view all the answers

Which type of customers are likely to benefit from Sikaflex®-403 Tank & Silo?

System providers and engineering design offices. Signup and view all the answers

Why is it important that Sikaflex®-403 has dedicated rheology properties?

It ensures easy extrusion, non-sag application, and smooth finish. Signup and view all the answers

What effect does the release of CO2 have during the polymerization process?

It does not prevent the polymerization process. Signup and view all the answers

What type of chemical substances do STP/MS release during curing?

Methanol Signup and view all the answers

Which of the following is a key characteristic of polyurethane sealants?

Strong and tough with elastic properties Signup and view all the answers

Which of the following competitors offers a product for microbiological loads?

SABA Ecoseal HM Signup and view all the answers

What was the total investment required to obtain German approval for digestion areas in agriculture?

100 kCHF Signup and view all the answers

Regarding movement capability, how does Sikaflex TS Plus compare to Sikaflex-403 Tank & Silo?

Sikaflex TS Plus has lower movement capability. Signup and view all the answers

Which product has received CE marking for floor joints according to EN15651-4 PW?

Sikaflex-403 Tank & Silo Signup and view all the answers

What is a common issue customers face with competitor products?

Absence of technical service Signup and view all the answers

What is the change in mechanical properties after 2 years of immersion in the specified silage liquid?

There is no change in mechanical properties. Signup and view all the answers

After how many days does the silage liquid show a mass change of -1.0% upon re-drying?

180 days Signup and view all the answers

What is the observed change in volume for the silage liquid after 28 days at 40°C?

5.8% Signup and view all the answers

What does the testing data indicate about the effect of immersion in the silage liquid on joint sealant?

No swelling indicates no damage to the joint sealant. Signup and view all the answers

What type of acid is present in the silage liquid tested?

Butyric acid Signup and view all the answers

Which result indicates the highest change in volume after 180 days @ 40°C?

Liquid manure Signup and view all the answers

What is the pH condition of the silage liquid as indicated by its composition?

Acidic Signup and view all the answers

What does a change in mass of 0% after re-drying liquid manure indicate?

There is a balanced mass retention. Signup and view all the answers

Study Notes

Sikaflex®-403 Tank & Silo Sealant

A new sealant designed for tank and silo applications, specifically for agriculture and industry.
It offers significantly increased performance in durability, temperature resistance, and movement capability.
It is a sustainable solution, suitable for biodigesters and protecting groundwater from leakage.

Applications and Target Customers

Designed for segmented and bolted steel tank systems as well as prefabricated concrete element solutions.
Key customers include system providers like Permastore, Stallkamp, Schumann Tank, Henze, concrete precasters, and installation contractors.
Sika aims to grow its market share in the prefabricated concrete element solutions segment.
Sikaflex®-403 Tank & Silo is ideal for countless joints exposed to organic acids.

Why Polyurethane (PU) is the Preferred Technology

Long Open Time: Essential for segmented steel tank construction, allowing for ease of application.
Dedicated Rheology: Easy to extrude, non-sagging, and smooth application.
Curing Properties: PU reliably cures in segmented steel tank applications, unlike STP/MS or silicones, which can be hindered by limited access to humidity.
Mechanical Properties: Unique PU microstructure with hard and soft segments provides strength, toughness, resistance, elasticity, and flexibility.

Competitors

SABA Ecoseal AC (STP-based) for biogas plants.
SABA Ecoseal HM (STP-based) for joints with microbiological loads, drinking water, and sewage treatment water.
Manus / ManusBond in Americas.
Local suppliers in Asia (e.g., Guibao, Huagui).

Customer Pain Points and Opportunity for Sika

Lack of technical service from competitors.
Limited comprehensive test certifications from competitors.
Existing competitor products have generally been insufficient.
Sika's product, with German approval for use in digestion areas for agriculture, required 100 kCHF in testing investments and 4 years of testing and evaluation.

Comparison to Sikaflex® TS Plus

Sikaflex®-403 Tank & Silo:
- Movement Capability: 20 HM (EXT-INT CC)
- CE Marking: Yes
- Over Drivable: Yes
Sikaflex TS Plus:
- Movement Capability: 12,5 HM
- CE Marking: No
- Over Drivable: No

Testing According to DIBT Guidelines

Long-term (2 years) immersion test results in silage liquid (3% Lactic acid, 1.5% Acetic acid, 0.5% Butyric acid) showed no change in mechanical properties.
All measured values remained within the tolerance of the testing method.

External Tests Results – Change in Mass

Exposure to silage liquid, liquid manure, and sulfuric acid for 28 days, 90 days, and 180 days at 40°C.
Results showed no swelling, indicating no damage from bucket of wheel loader.
Slight mass change in silage liquid and sulfuric acid, but within acceptable limits.

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Description

Explore the features and applications of Sikaflex®-403 Tank & Silo Sealant, designed for agricultural and industrial use. This sustainable sealant offers enhanced durability, temperature resistance, and is suitable for various tank systems. Discover its key benefits and target customers in the precast concrete market.