Polyurethane hardener
The most important hardener used in polyurethanes is hardener
Desmodur N75
After the reaction of hardener and resin, which is an exothermic reaction and does not require heat to continue, and the result of this reaction is a stable material that is used in many industries such as flooring and protective coatings for pipes and metal structures and many others.
Related products
Polyurethane flooring primer
The first step is to clean the polyurethane flooring, which is done in different ways according to its dirty condition, after which the floor should be sanded for more cleanness and creating suitable scratches. After completing these two steps, the primer coating should be applied on the floor. In this step, the diluted polyurethane liquid with high permeability should be poured on the floor. Creating a surface with high adhesion will protect the next layer from the separation of the floor in the future.
Therefore, the life and durability of the flooring directly depends on the quality of the primer, and choosing the right type of primer and the dryness and cleanliness of the surface when doing it is very important. One of the most important issues that should be considered before applying the primer is the complete dryness of the surface and not paying attention to it will cause a lot of damage.
The middle layer of polyurethane flooring
Farapooyesh with the following properties is one of the high quality materials available in the Iranian market, which with its suitable viscosity and at a very reasonable price compared to competitors is one of the popular middle layer materials among performers and has been used in many projects in the country. Proper viscosity Excellent adhesion to the floor and reasonable price is the most important feature of this product.
Polyurethane resin
Polyurethanes are polymers that have a urethane bond. This bond is formed by incremental adsorption between an isocyanate group and an active hydrogen compound. Isocyanate groups are highly reactive and therefore do not require an increase in temperature to advance their reaction. Polyurethane resistance to abrasion, impact and cracking is very good and hardens at ambient temperature and its resistance to sunlight is much higher than the epoxy group.
رقیق کننده کفپوش پلی یورتان
این رقیق کننده ها در واکنش شرکت نکرده و فرار میباشند و معمولا تبخیر بالایی داشته و بایستی حتی الامکان استفاده نگردند ولی در بسیاری از پروژه ها استفاده از آنها جهت کاهش ویسکوزیته ضروری است و میبایستی در حد محدودی استفاده گردند استفاده بیشتر از حد مجاز آن مشکلاتی را بو جود میآورد که بایستی به آنها توجه گردد از جمله میتوان به کاهش استحکام نهایی پس از خشک شدن ، خطر آتش سوزی ،تبخیر و خطر تنفس و مسمومیتهای ناشی از آن از اهمیت بالایی برخوردار است.
انواع هاردنر اپوکسی
هاردنرهای اپوکسی
هاردنرهای مورد مصرف در صنعت کفپوش عمدتا به دو گروه عمده اصلی زیر تقسیم میشوند
هاردنرهای پلی آمید : این گروه از هاردنرها عمدتا در رنگهای اپوکسی و پرایمر کاربرد داشته و بدلایل خصوصیات مناسب زیر استفاده گسترده ای دارند : انعطاف پذیرند مقاومت بالا نسبت به ضربه و مواد شیمیایی دارند و بدلیل چسبندگی بالا به بتن و مقتاومت مناسب به رطوبت در صنعت کفپوش عمدتا بعنوان هاردنر پرایمر مورد استفاده قرار میگیرد .
هاردنرهای پلی آمین
IHهاردنر پلی آمین این هاردنرها بسیار در صنعت و بخصوص صنعت کفپوش کاربرد داشته و برای روکش و لایه های کفپوش استفاده میشود این هاردنر بامقاومت شیمیایی نسبتا خوب معمولا در لایه ها و روکش استفاده میشودو رزین پس از خشک شدن بسیار سخت گردیده ودر دمای اتاق خشک میگردد
Zinc Rich primer coating
Zinc Reach coatings are paints that have large amounts of zinc particles in their formulation along with resin and other additives to protect steel or other metals that are in very hard and permanent corrosion conditions. Zinc metal powder in these coatings is sacrificed. In these environments, it prevents corrosion and decay of the main metal and gives it electrochemical or cathodic protection.
Zinc Rich epoxy coating is two-component as a primer and primer is applied on the metal in the first layer and is very suitable for protecting the metal in marine and wet environments.
