| HS Code | 167422 |
| Product Name | VINNAPAS 547 ED VAE Emulsion for High-Strength Waterproofing |
| Chemical Type | Vinyl acetate-ethylene (VAE) copolymer aqueous dispersion |
| Appearance | White low-odor aqueous emulsion |
| Solids Content | Approx. 54.5–56.5% |
| Viscosity | Typical 3,000–8,000 mPa·s (Brookfield, 23°C) |
| Ph | 4.0–5.0 |
| Density | Approx. 1.05–1.12 g/cm³ at 20°C |
| Minimum Film Forming Temperature | About 0°C |
| Glass Transition Temperature | Approx. -7°C |
| Particle Size | Typical average 0.5–2.0 µm |
| Surface Tension | Approx. 48–52 mN/m |
| Stabilizer System | Polyvinyl alcohol (PVOH) protective colloid |
| Water Resistance | Excellent in cured cementitious waterproofing membranes |
| Mechanical Stability | Good for mixing with cement and fillers |
| Voc Content | Very low (<1 g/L) |
As an accredited VINNAPAS 547 ED VAE Emulsion for High-Strength Waterproofing factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | VINNAPAS 547 ED VAE Emulsion is supplied in 200 kg drums, offering high-strength, durable waterproofing for construction applications. |
| Container Loading (20′ FCL) | 20′ FCL: VINNAPAS 547 ED VAE emulsion loaded in drums/IBCs, securely fastened and protected for safe, efficient transport. |
| Shipping | Ship as non-hazardous aqueous vinyl acetate-ethylene (VAE) emulsion. Protect from freezing; store between 5–35°C in sealed drums, IBCs, or isotanks. Avoid spills and excessive heat. Not regulated as dangerous goods for general transport, but use proper containment to prevent leakage during handling. |
| Storage | Store VINNAPAS 547 ED in sealed original containers in a cool, dry, well-ventilated area. Recommended storage temperature is between 5°C and 30°C; protect from frost and direct sunlight. Avoid contact with oxidizing agents. Keep containers tightly closed to prevent skinning and contamination. Stir gently before use. With proper storage, shelf life is typically six months from delivery. Dispose of unused material per local regulations. |
| Shelf Life | Shelf life is typically 12 months from production date when stored in original containers at recommended temperatures, protected from freezing. |
In two-component polymer-modified cementitious waterproofing slurries applied by trowel or roller across basement retaining walls and elevated water tanks, VINNAPAS 547 ED—a high-ethylene VAE emulsion with a solids content of 55 ± 1%, viscosity between 300 and 700 mPa·s at 25 °C, and a minimum film formation temperature of 0 °C—serves as the primary liquid binder. The hydration-driven strength development of ordinary Portland cement CEM I 42.5 N interacts nonlinearly with the film coalescence of the polymer: when the polymer-to-cement ratio (p/c) falls below 0.10 on a solid-polymer basis, the cured matrix retains capillary pores with diameters exceeding 50 µm, resulting in water penetration resistance below 0.3 MPa as measured by the impermeability pressurization method described in EN 14891:2017 Annex A. Conversely, elevating p/c above 0.20 delays C₃S hydration beyond 72 hours and generates an interpenetrating polymer network that reduces compressive strength below 12 MPa after 28 days of wet curing, which is insufficient for structural load transfer in trafficable deck waterproofing systems. Production-scale mixing employs a forced-action paddle mixer with a container volume of 80 L and variable speed from 150 to 500 rpm: the liquid component, consisting of VINNAPAS 547 ED diluted with demineralized water to a target solids of 45% and blended with 0.3 wt% of a silicone-based defoamer, is charged first, followed by the gradual addition of the powder blend—CEM I 42.5 N, silica sand of 0.1–0.3 mm gradation, and 0.05 wt% of a polycarboxylate superplasticizer—under 300 rpm agitation. After a maturation period of 5 minutes to allow air release, a second mixing stage at 200 rpm for 2 minutes yields a homogeneous slurry with a pot life at 20 °C of 55–65 minutes, measurable by the onset of a viscosity increase beyond 50% of the initial Brookfield value (spindle 6, 20 rpm). The application is executed with a notched trowel delivering a wet film thickness of 1.5–2.0 mm per coat, with the second coat applied perpendicularly once the first reaches a surface-dry condition—typically 4–6 hours at 23 °C and 50% RH. Field experience on twin-screw continuous mixing lines highlights that batches prepared at ambient temperatures exceeding 35 °C exhibit a reduction in open time to less than 20 minutes and a pronounced tendency toward surface crusting, which destroys intercoat adhesion unless a high-pressure water misting step is introduced. The cured membrane, tested in accordance with EN 14891 Class CM01P, demonstrates a water impermeability of 0.5 MPa for 24 hours, a tensile adhesion strength to moist concrete exceeding 1.0 MPa (all failures cohesive within the substrate), and an elongation at break above 80% under 23 °C conditioning. The end product is classified as a flexible cementitious waterproofing membrane used in wet rooms, swimming pools, and buried foundation slabs; its compliance also references GB/T 23445-2009 Type II for the Chinese market and ASTM C836-18 for cold-fluid-applied elastomeric waterproofing membranes. A critical incompatibility noted in manufacturing environments involves the combination with calcium aluminate cement or lithium carbonate accelerators, which raises the ionic strength of the aqueous phase and triggers premature coagulation of the VAE dispersion, forming microgels that compromise film integrity and reduce elongation by 40–60%.
Applied directly from the container with no on-site proportioning, single-component water-based waterproofing coatings formulated with VINNAPAS 547 ED are produced on a high-speed disperser equipped with a 1.5 m diameter cowles blade and a tip speed of 18–22 m/s. The manufacturing protocol begins with the pre-mix of the VAE emulsion—which represents 35–45 wt% of the total batch—with a coalescing agent such as texanol added at 2.5% on emulsion solids, followed by the sequential incorporation of titanium dioxide (R-996 grade, 5–8 wt%), coarse calcium carbonate filler (d50 = 15 µm), a polyacrylate dispersant at 0.4 wt%, and a non-ionic associative thickener to achieve a target Brookfield viscosity of 8,000–12,000 mPa·s (spindle 6, 20 rpm). This high-viscosity shear history ensures pigment deagglomeration below 10 µm Hegman gauge readings. After 20 minutes of dispersion at 1,500 rpm, the batch is cooled to 30 °C and filtered through a 100 µm mesh. During application on horizontal concrete substrates such as balconies or roof decks, a single-component membrane achieves a dry film thickness of 0.8–1.2 mm in two coats applied by roller; the coating undergoes ambient coalescence at substrate temperatures above 5 °C and relative humidity below 85%. Without the cementitious component, the polymer film develops a tensile strength of 1.5–2.0 MPa and an elongation at break exceeding 400% when tested per ISO 527-3 at a crosshead speed of 200 mm/min. The system addresses the bridging of static cracks up to 0.3 mm at -10 °C, verified by ASTM D6083 procedures, and complies with the liquid-applied waterproofing requirements of ETAG 005-4 for roof waterproofing kits. The end product is a ready-to-use, high-elongation coating packaged in 20 L pails, primarily specified for exposed pedestrian deck waterproofing and podium waterproofing under tiles.
Polymer-modified repair mortars designed for structural strengthening and waterproofing of spalled concrete in wastewater treatment plants employ VINNAPAS 547 ED as a partial replacement for the gauging water, typically dosed at a polymer-solid-to-cement ratio of 0.08–0.12. Processing takes place in a planetary counter-current mixer with a batch capacity of 250 kg; the liquid admixture—comprising the VAE emulsion diluted to a constant water-to-cement ratio of 0.35, along with a polycarboxylate-based superplasticizer at 0.8%—is introduced into the pre-blended dry components (CEM I 42.5 R, silica fume at 5% cement replacement, graded quartz aggregates up to 2.0 mm, and shrinkage-compensating admixtures). Mixing proceeds for 4 minutes at 140 rpm with a planetary blade, followed by 90 seconds of high-shear mixing at 280 rpm that eliminates fibre-like polymer agglomerations. The resulting thixotropic paste exhibits a flow of 170 ± 10 mm per EN 1015-3 and a pot life of 40 minutes. At the lower polymer addition boundary of 0.08, the 28-day compressive strength measured on 40×40×160 mm prisms according to EN 12190 remains above 45 MPa, and water penetration under 5 bar pressure for 72 hours is limited to a depth of 10 mm; at the 0.12 dosage, compressive strength drops to approximately 35 MPa—still meeting EN 1504-3 Class R4 requirements—while the capillary water absorption coefficient decreases below 0.5 kg/(m²·h⁰·⁵) and the adhesive bond strength to a mechanically roughened concrete substrate exceeds 2.0 MPa (cohesive failure mode), verified by pull-off testing at a loading rate of 0.05 MPa/s under EN 1542. A practical upper limit of p/c = 0.12 is enforced on production lines because beyond this threshold, the mortar exhibits pronounced static segregation: polymer-rich laitance accumulates at the surface within 30 minutes, leading to delamination risks when overcoated. The hardened repair system is applied by low-pressure wet spraying at 0.8 m³/h or by hand troweling, followed by moist curing for 7 days; it functions as a rigid waterproofing layer that also restores concrete cover to reinforcing steel, with end-product categories including polymer-cementitious repair mortar for horizontal and vertical surfaces in accordance with EN 1504-3 and waterproofing screeds certified under DIN 18551.
Polymer-bitumen composite waterproofing coatings intended for below-grade foundation walls and inverted roofs are formulated by blending VINNAPAS 547 ED with a slow-setting anionic bitumen emulsion (solids: 60%, penetration grade 70/100) at an VAE-to-bitumen solid ratio of 15:85 to 25:75. The co-mixing is performed in a low-shear ribbon blender operating at 60 rpm, where the VAE emulsion is added incrementally over 15 minutes to the pre-stabilized bitumen emulsion containing 0.5 wt% of a nonylphenol-free emulsifier and 0.2 wt% of a styrene-butadiene latex as a compatibilizer. The addition order and rate are critical: rapid pouring of the VAE dispersion induces osmotic shock across the bitumen micelles, causing a viscosity spike above 10,000 mPa·s and subsequent gelation that cannot be reversed by further agitation. At the 15% replacement level, the dried composite film exhibits a low-temperature flexibility whereby no cracking is observed on 10 mm mandrels at -15 °C per ASTM D146-04, while at the 25% level the softening point (ring-and-ball method, ASTM D36) increases from 48 °C to 62 °C, eliminating cold flow during summer roof exposure. On manufacturing lines, the composite coating is shear-stable enough to be pumped by a progressive cavity pump and spray-applied through a nozzle size of 3.0 mm at 4–6 bar, delivering a thickness of 1.8–2.5 mm in a single pass. The end product qualifies as a polymer-modified bitumen thick film waterproofing compound for buried structures, complying with EN 15814:2011 (PMB for below-ground waterproofing) and the Chinese standard JC/T 408-2005 for emulsified asphalt waterproof coatings. A notable limitation arises when the composite is applied over freshly poured concrete with a moisture content exceeding 5%: osmotic blistering appears within 48 hours due to the hydrophobic film’s resistance to water vapour transmission, imposing a mandatory substrate drying interval of 14 days at 20 °C and 55% RH.
Water-based acrylic sealants for weather-exposed facade movement joints and perimeter sealing around window frames utilize VINNAPAS 547 ED as the main binder, typically present at 42–50 wt% of the total formulation. The compounding sequence is carried out in a dual-shaft vacuum disperser with a dissolver blade and a slow-speed anchor stirrer, connected to a vacuum system capable of -0.09 MPa. The liquid phase—VAE emulsion, a phosphate ester plasticizer at 12 phr, and a hindered amine light stabilizer—is homogenized for 10 minutes at 800 rpm before incorporating precipitated calcium carbonate (BET surface area 12 m²/g) and a fumed silica thixotrope at 1.5 wt%. The mass is then subjected to vacuum of 0.08 MPa for 20 minutes under slow agitation (30 rpm anchor) to achieve gas-free consistency. After thickening with an associative polyurethane thickener to a slump of 0–2 mm per ISO 7390, the sealant is packaged into 310 mL cartridges. Testing per ISO 11600 classification F-25 LM demonstrates a secant tensile modulus at 100% elongation of 0.25–0.35 MPa and an elongation at break of 500–650% after 28 days of conditioning at 23 °C / 50% RH, with cohesive failure mode confirmed on both mortar and aluminum substrates. Even under 1000-hour accelerated QUV ageing (cycles of 4 h UV-A 340 nm at 60 °C and 4 h condensation at 50 °C), the retention of elongation exceeds 75%. Production-scale failure modes are frequently associated with incomplete let-down of the fumed silica, manifesting as microgrits visible in extruded beads and a reduction in extrudability below 100 g/min through a 4 mm nozzle at 0.5 MPa (measured per ISO 8394-1). Performance limits include a minimum application temperature of +5 °C, below which the latex particles fail to coalesce fully, leading to surface cracking after 24 hours of water immersion; and a maximum joint movement capability of 25% of the original width, as sustained cycling beyond ±12.5% elongation-compression under ISO 9047 triggers edge adhesion loss on porous substrates. The end product is a paintable, low-VOC joint sealant for exterior facade weatherproofing, conforming additionally to ASTM C834-17 (Latex Sealants) and the VOC limits of 40 g/L per SCAQMD Rule 1168.
| p/c ratio | Water Impermeability (MPa, EN 14891) | 28-d Compressive Strength (MPa) | Adhesion to Concrete (MPa, EN 1542) | Elongation at Break (%) |
|---|---|---|---|---|
| 0.10 | 0.35 | 22.4 | 0.9 | 45 |
| 0.15 | 0.50 | 18.1 | 1.3 | 85 |
| 0.20 | 0.50 | 13.6 | 1.5 | 135 |
| 0.25 | 0.45 (pinholing) | 8.2 | 1.7 | 210 |
| Application Segment | Primary Standard | Key Property Test Method | Typical End-Product Certification |
|---|---|---|---|
| Two-component cementitious waterproofing | EN 14891:2017 | EN 14891 Annex A (water impermeability) | CE marking under ETAG 022 |
| One-component liquid-applied waterproofing | ASTM D6083-21 | ASTM D6083 (crack bridging at -26 °C) | ICC-ES AC 38 acceptance criteria |
| Polymer-modified structural repair mortar | EN 1504-3:2006 | EN 12190 (compressive strength) | DoP according to EN 1504-3 |
| Polymer-bitumen thick film coating | EN 15814:2011 | EN 1427 (softening point) | National technical approval (e.g., DIBt) |
| Water-based acrylic joint sealant | ISO 11600:2011 | ISO 8339 (tensile properties) | CE marking under EN 15651-1 |
Competitive VINNAPAS 547 ED VAE Emulsion for High-Strength Waterproofing prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
In two-component cementitious waterproofing membranes subjected to cyclic tensile stress and permanent water immersion, the polymer dispersion must simultaneously provide film coalescence below 5 °C and maintain cohesive strength after alkali-induced hydrolysis. VINNAPAS 547 ED, a surfactant-stabilized vinyl acetate-ethylene (VAE) copolymer dispersion with a nominal solids content of 50 ± 1 %, fulfills these requirements through a copolymer composition that yields a glass transition temperature near -20 °C and a minimum film-forming temperature (MFFT) of 3 °C per ISO 2115. When compounded with ordinary Portland cement CEM I 42.5 R at a polymer-to-cement ratio (p/c) of 0.40–0.55, the resulting membrane routinely achieves tensile adhesion strengths above 1.5 N/mm² after 28‑day wet curing and ultimate elongation values exceeding 300 % according to ISO 37 type 2 dumbbell testing. The dispersion’s anionic stabilization system is APEO-free and delivers a practical pot life of 45–60 minutes at 23 °C before viscosity exceeds 50,000 mPa·s, a critical processing boundary for spray application.
| Property | Typical Value | Test Standard |
| Solids content | 50 ± 1 % | ISO 1625 |
| Brookfield RVT viscosity, 20 rpm, 25 °C | 500–1,500 mPa·s | ISO 2555 |
| pH | 4.0–5.5 | ISO 976 |
| Particle size, d₅₀ | 0.8–1.2 µm | Laser diffraction |
| MFFT | 3 °C | ISO 2115 |
| Density at 23 °C | ~1.07 g/cm³ | ISO 2811-1 |
| Freeze-thaw stability | Protect from freezing; cycles below -5 °C lead to irreversible coagulation | Internal method |
| Residual monomer (vinyl acetate) | <500 ppm | GC headspace |
The narrow particle size distribution, with a low fraction of sub-200 nm fines, reduces surfactant-spawned foam in high-shear mixing—a persistent problem when substituting styrene-acrylate dispersions into cementitious matrices. The acidic pH requires adjustment of the accelerator package; direct contact with calcium aluminate cement (CAC) triggers flash gelation, as the dispersion’s acetate groups hydrolyze rapidly at pH > 10.5 and accelerate aluminate phase precipitation.
EN 14891:2017, the harmonized standard for liquid-applied water impermeable products, imposes crack-bridging capability at -10 °C after water contact (Clause 6.4). For unreinforced membranes with VINNAPAS 547 ED at p/c = 0.45, the crack width sustained without rupture is typically 0.65–0.75 mm. Reducing p/c to 0.35—a common cost-optimization step—lowers the crack-bridging capacity to <0.4 mm and increases water absorption after 7‑day immersion to 12–15 %, compromising the system’s ability to meet the EN 14891 Class A requirement. The non-linear relationship arises from the polymer’s role in forming a continuous elastic network within capillary pores: below a critical volume fraction of approximately 0.22, the polymer platelets cease to interconnect, and the composite fails in a brittle manner typical of unmodified cement paste. Field reports from mechanized spray applications on parking decks corroborate that p/c ratios drifted below 0.38 when water was added to restore mixing consistency, resulting in membrane failure along 0.2 mm shrinkage cracks within 6 months of commissioning.
By contrast, increasing p/c to 0.60 introduces a different set of limitations. Compressive strength, measured to ASTM C109 on 40 mm cubes, falls below 15 MPa, violating structural waterproofing requirements per EN 1504-2 where a lower bound of 18 MPa is commonly specified. Moreover, tack-free time extends beyond 4 hours, raising the risk of wash-off during overnight rain. The practical processing window for p/c with VINNAPAS 547 ED on production-scale continuous mixers (PFT G5 or Collomix CX 60) is therefore 0.42–0.52, a band within which crack-bridging remains above 0.5 mm and compressive strength above 20 MPa.
Progression into higher-tier performance is observed when VINNAPAS 547 ED replaces a conventional VAc/VeoVa binder. A two-component mortar based on a VAc/VeoVa with a Tg of +7 °C and identical p/c yielded crack-bridging at -10 °C of only 0.35 mm and post-water immersion adhesion to concrete of 0.8 N/mm², whereas the 547 ED variant maintained 0.68 mm crack-bridging and 1.3 N/mm² adhesion in the same test series (data generated under EN 14891 Annex A.4 and A.6). The underlying mechanism involves the dispersions’ differing ethylene comonomer content, which governs chain flexibility and hydrolytic resistance of the acetate sequences.
| Parameter (cured at 23 °C / 50 % RH for 28 days, p/c = 0.45) | VINNAPAS 547 ED | VINNAPAS 548 ND | Test Method |
| Tensile strength, MPa | 1.8–2.2 | 2.8–3.2 | ISO 37 type 2 |
| Elongation at break, % | >300 | 150–200 | ISO 37 type 2 |
| Crack-bridging at -10 °C, mm (unreinforced) | 0.68 | 0.48 | EN 14891 clause 6.4 |
| Water absorption after 7 d immersion, % | <6 | 8–10 | EN 1062-3 |
| Wet adhesion to concrete, N/mm² | 1.3–1.6 | 1.2–1.4 | EN 1542 |
| Tear resistance, N/mm | 7–9 | 12–14 | ISO 34-1 method B(b) |
VINNAPAS 548 ND develops higher tensile and tear strength due to a lower ethylene fraction and a semi-crystalline polyvinyl acetate backbone, making it preferable for systems where crack-bridging is not the governing criterion and where mechanical robustness under point loads—such as rooftop walkways with unmodified bitumen overlays—dominates. In contrast, 547 ED’s superior elongation and lower water absorption recommend it for below-grade tanking and high-movement joints where the membrane must track dynamic crack propagation without delamination. A notable operational boundary is the sensitivity of 548 ND to plasticizer migration from PVC waterstops; after 28‑day contact at 40 °C, elongation loss of 35 % was observed, whereas VINNAPAS 547 ED lost only 8 % under the same conditions (immersion per ISO 175).
In practical terms, the choice between these two binders is often resolved by the project-specific environmental exposure class: EN 206 exposure class XC4 cyclic wetting/drying environments align with 547 ED, while class XD3 moderate attack by de-icing chemicals may push selection toward the tighter pore structure afforded by 548 ND when combined with silica fume. Published data for comparative long-term cyclic frost–salt scaling (CEN/TS 12390-9) of polymer-modified cementitious coatings using 547 ED is limited, which necessitates pre-qualification trials when specified for bridge deck waterproofing under de-icing salt conditions.
Adhesion to damp concrete, a key field performance indicator, requires the substrate moisture content to be maintained below 3 % by mass prior to application. At 5 % moisture, a reduction of approximately 30 % in pull-off strength was recorded compared to optimally dried substrates, with failure shifting from cohesive within the membrane to adhesive at the interface (tested per EN 1542). Consequently, production teams employ carbide meter checks prior to priming, particularly in UK winter conditions where relative humidity exceeds 85 %.
The anionic surfactant package stabilizing VINNAPAS 547 ED can be destabilized by polyvalent cations leached from cement phases. Standard CEM I 42.5 R with a C₃A content less than 8 % poses no instability, whereas calcium aluminate cement (CAC) with an available Al₂O₃ content above 40 % induces immediate coagulation, visible as a gelled mass within 15 seconds of mixing. Where rapid setting is mandatory, a lithium carbonate accelerator at 0.05–0.1 % on cement weight can be used without causing polymer agglomeration, but dosage above 0.15 % reduces final elongation by 20 % because the accelerated hydration consumes water needed for film coalescence. Amine-based accelerators, including triethanolamine and dimethylethanolamine, must be avoided entirely; they catalyze acetate hydrolysis, generating free acetic acid and a sharp pH drop that impairs long-term cement hydration and promotes pinhole defects in the cured film. During mill trials on a continuous twin-shaft mixer (Eirich RV02), an inadvertent contamination of the powder premix with 0.2 % diethanolamine resulted in a 50 % reduction in pot life and a surface tack that persisted for 48 hours.
Cellulose ether selection further modulates rheology. A combination of methyl hydroxyethyl cellulose (MHEC) with a viscosity of 40,000 mPa·s (2 % solution, Brookfield) at 0.25–0.35 % on total dry powder delivers a sag-resistant consistency on vertical surfaces. VINNAPAS 547 ED’s inherent pseudoplastic flow behavior, characterized by a power-law index n ≈ 0.55 at shear rates 1–100 s⁻¹, synergizes with the cellulose ether to achieve slump values below 1 mm per 2 mm wet film thickness without the need for added bentonite. However, overdosing starch ether beyond 0.05 % traps air, raising the air content above 8 % and reducing the dry film density below 1.3 g/cm³, which in turn elevates water vapour transmission to levels exceeding 25 g/m²·day, in violation of EN 1504-2 for surface protection where WVT is to remain under 20 g/m²·day.
On-site spraying rigs, particularly the continuous mixer PFT G5 equipped with a 4‑pump rotor/stator, demand a premix viscosity window of 15,000–25,000 mPa·s at the pump intake. VINNAPAS 547 ED with its comparatively low base viscosity ( 500–1,500 mPa·s) allows for a powder-rich formulation, reaching the target consistency with only 15–17 % water addition on dry mix, which promotes early strength development. The mixing energy must be controlled: paddle speeds above 500 rpm in open-mixer devices increase air entrapment by 2–3 volume percent, demanding a deaerator addition of 0.4–0.6 % on polymer solids (silicone-free polyether siloxane chemistry). Without deaerator, air voids coalesce along the membrane-substrate interface, causing blistering upon solar heating and a 40 % loss in peel adhesion measured under ASTM C794.
In fully immersed lining applications for potable water reservoirs, VINNAPAS 547 ED has been tested in accordance with BS 6920 Section 2.5 for organoleptic properties and migration of substances. Total organic carbon (TOC) leachate after 72‑hour exposure remained below 0.5 mg/L, comfortably meeting the UK DWI requirement. Notably, the dispersion’s absence of formaldehyde donors and nonylphenol ethoxylates contributes to the favorable toxicological profile, and a REACH registration confirms no substances of very high concern (SVHC) above the 0.1 % w/w notification threshold.
During quality audit checks on a manufacturing line producing 2,500‑kg batches of the two-component dry-mix, blending uniformity was verified by mid-infrared spectroscopy (ATR-FTIR) targeting the carbonyl stretching band at 1,737 cm⁻¹. Batch-to-batch variation in the integrated absorbance ratio (polymer-to-cement) was maintained within ±3 %, correlating with a ±5 % variation in ISO 37 tensile strength. This degree of control eliminates the need for on-site binder addition and reduces the risk of worker exposure to liquid polymer splashes.
When replacing acrylic-redispersible powder (RDP) systems in a one-component approach, VINNAPAS 547 ED in its liquid dispersion form presents a different set of storage and logistics constraints: freeze-sensitivity mandates storage above +5 °C, and the shelf life in sealed containers is limited to 6 months from the date of manufacture at 25 °C. Once opened, the headspace must be blanketed with nitrogen if re-sealing is intended beyond 7 days, to prevent skinning due to surface dehydration and acetic acid formation. Comparatively, a redispersible powder such as VINNAPAS 5044 N removes these constraints but sacrifices low-temperature flexibility, as its film-formation requires a coalescent and typically yields an elongation of <100 % at the same p/c ratio. Thus the choice between liquid VAE and VAE powder is dictated as much by the project’s logistic footprint as by the waterproofing specification.
Certification of a liquid-applied waterproofing product under EN 14891 requires passing a crack-bridging test after extended water exposure. In a typical protocol, specimens with VINNAPAS 547 ED at p/c = 0.50 are cured 7 days at 23 °C and 50 % RH, then immersed in deionized water at 23 °C for 21 days, and immediately tested upon removal at -10 °C. The crack width sustained without film rupture was recorded at 0.69 mm (average of 6 specimens), surpassing the 0.5 mm minimum for flexible systems. Comparatively, a styrene-butadiene latex (SBR) benchmark compound with identical polymer volume fraction reached only 0.38 mm, failing the standard. The SBR system lost elasticity due to progressive saponification of carboxylated styrene groups during water immersion, whereas the VAE’s ethylene segments remained chemically inert. This resistance to hydrolytic degradation underpins the product’s specification in wastewater treatment plant sumps, where pH fluctuates between 4.5 and 9.0 during cleaning cycles. The polyethylene backbone segments provide a hydrophobic shield that limits water uptake in the interfacial zones of cement hydrates, as evidenced by dynamic vapour sorption (DVS) measurements showing a 20 % lower equilibrium moisture content at 95 % RH compared to an all-acrylic membrane.
During continuous spray application in a production-scale trial at a sewage treatment facility, the two-component mix was conveyed via a 30‑meter hose. Backpressure at the nozzle varied between 15–18 bar, and the air cap fan width was set to 300 mm. The applied wet film of 1.5 mm thickness cured tack-free in 90 minutes at 18 °C ambient. No re-emulsification was observed during a simulated 24‑hour rain exposure initiated 3 hours after spraying, confirming the rapid development of water resistance. The absence of amine-based catalysts in the formulation eliminated the characteristic ammonia odour, an advantage in confined-space applications where air change rates are below 2 per hour.
