کربنات کلسیم یک ماده پرکاربرد و فراوان در پوسته زمین است . کربنات کلسیم نوعی سنگ رسوبی است که در طی میلیونها سال تشکیل شده است . کربنات کلسیم در معادن به شکل کلسیت ، آراگونیت ، ،سنگ مرمر، سنگ آهک یافت میشود .
این ماده نقطه ذوب بالایی حدود 1339 درجه سانتیگراد داشته و غیر قابل اشتعال بوده و غیر سمی است .
این ماده معدنی و پر کاربرد ارزان بوده و فیلر مناسبی در بسیاری از کاربردها در صنعت رنگ میباشد
The most important hardener used in polyurethanes is hardener
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.
It is one of the products of Farapooyesh which is produced on the basis of epoxy bisphenol A and hardener polyamine resin. Suitable and high quality and features as follows have many customers and is one of the main products of the company.
Excellent rolling property that creates smooth, undulating surfaces.It does not bubble due to having quality anti-bubble material.Due to the lack of inactive solvents, its strength and scratch-resistant properties are excellent.They do not catch fish due to high quality materials and advanced formulation.Its surface is not distorted due to its quality materials and proper formulation.It can be supplied in various colors according to the order.Can be ordered in relatively small quantities.It is very hard and does not get scratches easily.
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.
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.
Hardeners used in the flooring industry are mainly divided into the following two main groups
Polyamide hardeners: This group of hardeners are mainly used in epoxy and primer paints and are widely used due to the following suitable properties: They are flexible, have high resistance to impact and chemicals, and due to their high adhesion to concrete and good moisture resistance in industry. Flooring is mainly used as a hardener primer.
IH Polyamine hardener These hardeners are widely used in industry, especially in the flooring industry, and are used for floor coverings and layers. This hardener with relatively good chemical resistance is usually used in layers and veneers. The resin hardens after drying and dries at room temperature.
Silica is an abundant mineral in the Earth's crust that has been widely used in many industries, including electronics and computers, construction, health, paint and many other industries, and its use is expanding every day.
In the paint industry, silica powder is used as a filler in various meshes and increases the wear resistance of the floor.
These diluents do not react and evaporate and usually have high evaporation and should not be used as much as possible, but in many projects their use is necessary to reduce viscosity and should be used to a limited extent. It should be noted that they should be considered, including the reduction of the final strength after drying, the risk of fire, evaporation and the risk of respiration and poisoning due to it is of great importance.