Performance Additives Building & Construction Newsletter. Issue 6 May 2016

Transcription

1 Performance Additives Building & Construction Newsletter Issue 6 May 2016

2 1 Content Content Welcome 2 Product focus CF Product performance update in combination with different blended cements for C2TE tile adhesive mortars 5-7 News Sustainability 8 New Brochures 8 Cover image: One of the images in our new Sustainability Brochure

3 2 Welcome Dear Customers, Frank Grootnibbelink Global Business Director Building & Construction AkzoNobel is since more than a decade a recognized leading company in the Chemicals sector in the area of Sustainability. As a global leader and expert in the Building & Construction segment we continuously fill our Innovation funnel and include the sustainability aspect of our solutions in the forefront. In this edition of our Newsletter you find some of our latest market updates and recent product launches. It is my pleasure to introduce our first brochure about «Living in green buildings», an overview of our sustainable solutions, illustrating what we have achieved so far and what drives our future. Construction and maintenance of Buildings & Infrastructure is a key application segment for AkzoNobel where nearly half of the company s revenues are made. Todays developments are focused towards long term performance, in lifetime and money, leading towards the latest green building standards (e.g. LEED) and aiming at consistent and favorable living quality conditions. We want to meet this ambition in connection with growing customer needs on ease of application to ensure an efficient use of materials and time throughout the application work, from an applicator as well as owner s perspective. If you have any feedback to us about what we are doing please let us know your opinion is important to us. Frank Grootnibbelink

4 3 Product focus CF9000 Formaldehyde free acrylic redispersible polymer for cement free systems The latest addition to our Building and Construction Performance Additives product portfolio, ELOTEX CF9000 redispersible polymer powder has been specifically designed to formulate high performance cement free and mineral binder free dry-mix finishing and decorative coats. The use of ELOTEX CF9000 brings to our customers not only a sustainability advantage of eliminating cement from their formulations but also ensures high water resistance and weathering (UV) stability of finishing coats. Cement free decorative finishing coats formulated with ELOTEX CF9000 are a real alternative to the ready-to-use dispersion based decorative finishing systems. Move from dispersion based ready-to-use systems will bring following benefits to our customers: - Less, lighter and lower cost packaging material (paper bags instead of plastic buckets) - Less waste and easier handling of packaging waste - Less transportation and storage costs - No freezing issues - No biocides in the final powder formulation (normally needed for in-bucket preservation) - Consistency of the finishing coat can be easily varied by the amount of added water one powder formulation for different application methods (hand or machine). Compared to cement based powder finishing coats, cement free formulations with ELOTEX CF9000 offer: - ph <10 for a better pigment stability - Higher color consistency - No risk of efflorescence Typical applications of cement free dry mix formulations based on ELOTEX CF9000 are: - Interior and exterior decorative wall finishes - Base coats and textured decorative coats for External Thermal Insulation Composite Systems (ETICS) - Skim Coats

5 4 Product focus CF9000 Testing Results Tested formulations For smooth cement free render, 10% of ELOTEX CF9000 leads to an equivalent wet scrub resistance to 7.5% of dispersion (based on polymer solids content in the dispersion). The conventional redispersible polymer powder based on EVA copolymer show 10 fold worse result compared to formaldehyde free acrylic ELOTEX CF9000 redispersible polymer powder. Wet scrub resistance of structured cement free render based on ELOTEX CF9000 can be adjusted by adjusting the content of the formaldehyde free acrylic redispersible polymer powder. Additionally, no discoloration of smooth or structured cement free decorative renders formulated with ELOTEX CF9000 can be observed after 400 hours in Super UV chamber (UV light 300nm) or after 2000 hours Sun-Shine Weather-meter.

6 5 Product performance update ELOTEX in combination with different blended cements for C2TE tile adhesive mortars Reduced greenhouse gas emissions (CO 2 ), energy efficiency and more integration of renewable materials in the building and construction industry are nowadays a usual requirement. To meet the growing demand for sustainable products, it is worthwhile to look in depth into the environmental impact of the manufacturing of Portland cement. One way for the dry mortar industry to reduce the environmental impact of Portland cement in their dry mortar formulations is the implementation of alternative cementitious binders, like blended cements. CEM I 5% CEM II/A 6-20% CEM II/B 21-35% CEM III/A 36-65% CEM III/B 66-80% CEM III/C 81-95% CEM IV/A 11-35% CEM IV/B 36-55% CEM V/A 18-30% CEM V/B 31-49% wt % Portland cement (0-0.5% of admixtures) S- slag, D- silica fume, P- nat. pozzolans, Q- nat. calcinated pozzolans, V- fly ash, W-calcareous fly ash, T- burnt shale, L, LL- limestone; M- composite (S, D, P, Q, V, W, T, L, LL) blastfurnace slag (S) pozzolanas (D,P,Q,V,W) composite (S, P, Q, V) Scheme 1 Cement classification according to EN I- Portland cement, II- Portland composite cement (A- low and B- moderate content of admixtures), III- Blastfurnace cement, IV- Pozzolanic cement, V- composite cement. Blended cements are obtained by mixing Ordinary Portland Cement (OPC) with by-products (fly ash, blast furnace slag, or silica fumes) of other industrial branches in various amounts. Such cements comply with European Standard EN 197-1, which categorises cement into five types based on their chemical composition: CEM I (Portland cement), CEM II (Portland composite cement), CEM III (Blastfurnace cement), CEM IV (Pozzolanic cement), and CEM V (composite cement) (Scheme 1).

7 6 Product performance update CEM I 52.5R CEM II/B-S 42.5N CEM II/A-LL 32.5R CEM III/A 42.5N Figure 1 Tensile adhesion strength after wet storage (EN 1348) of tile adhesive with different cement types (CEM I, CEM II/B-S, CEM II/A-LL, CEM III/A). Tensile Adhesion Strength / N/mm C2 class Alternatives to Portland cement make a substantial contribution to environment protection including energy saving, conservation of natural resources, and pollution control. Moreover, from a technical point of view, properties of blended cements, in particular durability of material, can be better than those of OPC cement due to finer particles, and therefore, lower permeability. However, variability in chemical composition of composite cements makes it more difficult to control mortar rheology, open time, and adhesion strengths. Therefore, dry mortar producers are faced with the challenge of replacing the mainly used OPC CEM I by blended cements while still maintaining excellent performance of their ceramic tile adhesive (CTA). Compatibility with all different kinds of cementitious binders was one of the key requirements during the development of our lately launched new redispersible polymer powder ELOTEX for high quality C2 class tile adhesives. Our ELOTEX redispersible polymer powder was specifically developed to extend open time and improve wet adhesion properties of high quality cement based tile adhesives. Use of ELOTEX enables dry mix mortar producers to obtain same open time and wet adhesion benefits even when using cements of different qualities (such as CEM II or CEM III). Additionally, due to very low VOC emissions (meeting the EMICODE EC1 PLUS requirements) this redispersible polymer powder ensures safe working environment for applicators and excellent indoor air quality. Tile adhesive formulations modified with ELOTEX provide excellent adhesion performance in the most critical wet conditions. As shown in Figure 1, formulations with ELOTEX and different types of cement (e.g. CEMII/B-S, CEMIIA/LL, CEMIII/A) meet the EN 1348 norm for C2 tile adhesive (tensile adhesion strength 1 N/mm 2 ). In combination with composite cements, ELOTEX offers outstanding open time, exceeding by far the minimum requirements of EN 1346 for C2 TE tile adhesive (open time 0.5 N/mm 2, after 30 min) (Figure 2) without sacrificing slip resistance and early strength development.

8 7 Product performance update CEM I 52.5R CEM II/B-S 42.5N CEM II/A-LL 32.5R CEM III/A 42.5N 1.5 Open time 20 Open time 30 Open Time / N/mm Figure 2 Open time (EN 1346) of tile adhesive with different cement types (CEM I, CEM II/B-S, CEM II/A-LL, CEM III/A) E class ELOTEX offers our customers the following main benefits: - excellent mortar rheology and workability - increased mortar stability - delayed skin formation - improved cohesion strength - excellent adhesive bond strength even under wet conditions - extended open time - conformity to EMICODE EC1 plus VOC emission requirements - conformity to BfR XIV requirements for contact with potable water

9 8 News Sustainability What we do to fulfill our responsibility as a company. By offering sustainable products and solutions to our customers, we strive to reduce our impact on the planet. We will succeed only if sustainability determines our actions. This is why we have deliberately integrated sustainability into every area of our company. For the benefit of our customers and the benefit of our world around us. We are pleased to present to you our newly published Sustainability Brochure that underlines our efforts to doing more with less. New brochures CF9000 Formaldehyde free acrylic redispersible polymer powder specifically designed for cement free dry-mix finishing coats and BERMOCOLL MT 500 The latest advances in dry mortar additives technology for high class tiling coming from the Building & Construction Laboratories of AkzoNobel ELOTEX CF9000 Our formaldehyde free acrylic redispersible polymer which is described also in this newsletter. ELOTEX and BERMOCOLL MT 500 our latest advances for high class tiling bring significant improvements to your tile adhesive formulations.

10 Akzo Nobel Chemicals AG Industriestrasse 17a CH-6203 Sempach Station Switzerland AkzoNobel creates everyday essentials to make people's lives more liveable and inspiring. As a leading global paints and coatings company and a major producer of specialty chemicals, we supply essential ingredients, essential protection and essential color to industries and consumers worldwide. Backed by a pioneering heritage, our innovative products and sustainable technologies are designed to meet the growing demands of our fast-changing planet, while making life easier. Headquartered in Amsterdam, the Netherlands, we have approximately 45'000 people in around 80 countries, while our portfolio includes well-known brands such as Bermocoll, Elotex, Sikkens, International, Interpon and Eka. Consistently ranked as a leader in sustainability, we are dedicated to energizing cities and communities while creating a protected, colorful world where life is improved by what we do Akzo Nobel N.V. All rights reserved