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VINNAPAS® 825 ED

VINNAPAS® 825 ED is an all-round construction dispersion for two-component dry mix mortars, specifically suited for cement admixtures and two-component cementitious self-leveling compounds. It is based on a semi-flexible terpolymer of vinyl acetate, ethylene and vinyl chloride and belongs to the product class VINNAPAS® ED which means that it enhances the adhesion and mechanical strength of mortars. 



特性

  • VINNAPAS® 825 ED is an aqueous dispersion of a vinyl acetate, ethylene, vinyl chloride terpolymer with a 50 % solids content.
  • VINNAPAS® 825 ED is ideal for modifying inorganic binders, such as cement, lime and gypsum in conjunction with granular aggregates.
  • VINNAPAS® 825 ED can be blended with most VINNAPAS® dispersions and many other aqueous polymer dispersions in any ratio. When blending, it is important to adjust the pH of both dispersions which are to be blended in a pH range in which both dispersions are stable. Storage tests should be carried out to check the compatibility of the mixture.

免责声明

所提供之所有信息均基于我们当前所掌握的知识。尽管如此,我们不对其作任何担保、也不承担任何责任,并且保留在任何时候进行技术变更的权利。购买方应在预测试中对所提供之信息以及产品在既定应用中的适应性进行检查。任何时候都必须以合同条款与条件为准。此外,本免责申明还适用于与第三方权利有关之事宜,尤其是在德国境外。

The most important applications of VINNAPAS® 825 ED include the production of floor screeds, repair mortars and cement-bound construction adhesives. VINNAPAS® 825 ED increases mechanical strength and significantly improves adhesion to the substrate. VINNAPAS® 825 ED modified coatings and screeds are tough and resilient. This dispersion also produces good results in relatively thin screeds. For example, it improves abrasion resistance and reduces the risk of cracking. VINNAPAS® 825 ED contains the ideal amount of antifoam agent for the recommended applications. Addition of VINNAPAS® 825 ED increases the density of the product, reducing penetration by water, petrol and oil.

For typical application fields of VINNAPAS® 825 ED, refer to the section "application". Please discuss additional applications with your WACKER customer representative.

Processing

VINNAPAS® 825 ED can be freely diluted with water, but if diluted below a solids content of 20%, the resin has a slight tendency to settle out when stored for lengthy periods. However, the resin can be homogeneously redispersed simply by stirring or shaking. Suitable thickening agents include cellulose derivatives and inorganic thickening agents. The influence of these additives on the properties of the end products (mortar, screed, adhesives) must always be tested. Salts of polyacrylic acid can greatly delay the setting time of the cement.

It is not usually necessary to add solvents or plasticizers, since VINNAPAS® 825 ED has a minimum film-forming temperature of approx. 7°C.

如果产品不是用于我们推荐的应用, 则购买者应对该产品的选择、加工和使用负全部责任. 此外还应遵守所有的相关法律法规.

可再分散乳胶粉的颜色可能会有略微的变化, 但不会对产品的功能造成影响.

包装

Non-returnable PE drums of 150 kg capacity (standard dispatch quantity: only fully-loaded pallets à 750 kg), non-returnable containers of 1 t capacity and road tankers.

储存

When the dispersion is stored in tanks, proper storage conditions must be maintained. VINNAPAS® 825 ED has a shelf life of 6 months starting from the date of receipt if stored under cool (below 25 °C) but frost-free conditions in the original, unopened containers. Any longer periods for the maximum storage period that may be described in the Certificate of Analysis which accompanies each shipment of VINNAPAS® 825 ED, take preference over this suggestion in which case the time period stated in the Certificate of Analysis shall be solely authoritative. Iron or galvanized iron containers and equipment are not recommended, because the dispersion is slightly acidic. Corrosion could result in discoloration of the dispersion or blends made from it in further processing. We therefore recommend the use of containers and equipment made of ceramic, rubberized or enameled materials, appropriately finished stainless steel, or plastic (rigid PVC, polyethylene or polyester resin). As polymer dispersions may tend to superficial film formation, skins or lumps may form during storage or transportation. Filtration is therefore recommended prior to utilization of the product.

Preservation for Transport, Storage and further Processing

VINNAPAS® 825 ED is adequately preserved during transportation and storage if kept in the original, unopened containers. When stored in tanks, the dispersion should be modified with a preservative to prevent microbial contamination. Suitable measures should be taken to ensure that the tanks are properly clean. In storage tanks in which the product is not stirred, it is advisable to cover the surface of the dispersion with 1 - 2 cm of water, to which a preservative has been added. This will prevent skin formation and microbial contamination. In the case of storage in silos, it is important that the air drawn into the silo when the product is discharged is also kept free of germs. As a rule, all finished products manufactured from polymer dispersions also require preservation. The type and extent of preservation will depend on the raw materials used and the anticipated sources of contamination. The compatibility and effectiveness of the preservatives should be checked for a given formulation. Preservative manufacturers will be able to advise you on the type and amount of conservation agent to use.

销售和支持

Changsha Port
长沙市开福区新港大道80号
000000 Changsha
中国
+86  400  921-6699 (电话)
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