Table of contents:
- Initial information
- Justification of advantage
- Prescription part
- For home craftsmen
- It's a matter of proportionality
Acrylic plaster celebrates 50 years of utilitarian use. Details of decorative interior decoration with imitation of natural gypsum and ornamental stone are used by builders and designers.
Uncomplicated technology will allow you to organize your own business for the manufacture of eye-catching and useful gizmos for residential buildings and fashionistas. The extraction of ornamental stones is controlled by the state. Plastic filled with color paste and crushed stone dust will create an imitation of a product from mountain treasures.
Another name that more clearly reflects the composition of acrylic gypsum is plasticrite. Because it consists of substances of artificial origin - MMA and PMMA polymers.
Patented by PMMA 90 years ago. In everyday life, the polymer is known as organic glass. The components of artificial gypsum are acrylic resins and water. The composition of water from acrylic resins and powder is called cold curing resin. No heat is required to produce a solid product.
Feedstock - monomers, belong to substances of the third class of danger to the environment. But after the completion of the polymerization process in the acrylic productthe free monomer is not detected, so the finished work of acrylic plaster is safe for humans.
Justification of advantage
The fragility of products made from natural materials is reported by the pores. Products made from natural gypsum shrink. Alabaster dries instantly.
Acrylic gypsum is deprived of these shortcomings:
- polymerization process is extended over time;
- no shrinkage of ornamental material;
- no risk of bubbles during molding.
Hardware stores in the country offer customers acrylic gypsum Ecoresin simil ceramica, which in Russian is shortened to the name "Ecoresin". Technological substance for needlework. The powder is mixed with water in proportion according to the instructions. You have to mix for two minutes. Then pour the mixture into molding silicone volumes and remove after an hour. Further, the finished casting can be coated with paints and varnish. The technology is suitable for making souvenirs, vases and decorative panels.
Acrylic mass for the manufacture of decorative products is formed from two or three components:
1. Polymer powder and water.
2. Acrylic resin, colorless resin and hardener.
To improve the decorative quality of gypsum products and prevent moisture helps acrylic lacquer for gypsum. The protective lacquer film does not warp or peel off due to temperature changes. The sun's rays do not destroy the coating and the product.
Minus of most coatings -"chemical" smell due to the evaporation of the components. Acrylic lacquer is odorless.
The substance applied to the surface dries in minutes, the drying speed is related to the temperature and humidity of the air. But there is a nuance. Acrylic water-based varnish begins to stick after a while. Therefore, it is preferable to use polyurethane varnishes for gypsum products.
In the conditions of a country where winter lasts 6-7 months, the use of frost-resistant and moisture-resistant acrylic gypsum is appropriate and justified for finishing the exterior walls of buildings.
But for interior decoration, finishing tiles, ceiling rosettes and acrylic plaster fittings are applicable.
For home craftsmen
Do-it-yourself acrylic gypsum can be kneaded by a person with minimal building experience.
Preparation begins with the air temperature in the workspace. According to sanitary standards in the production volume, suitable thermometer readings are plus 15 ° Celsius. Crossing the specified limit reduces the rate of polymerization exponentially. For example, a 5-degree drop will increase the waiting time for the finished product by five times.
Excess moisture harms the polymerization process, increases cooking time and corrects the color of the intended product. Before kneading, the components are dried without heating on a dry board of natural wood or on clean paper. The drying surface must not be placed on radiators or in an oven.
Capacity for filling the composite composition is called a matrix.To prevent the starting material from sticking, the working surface of the molding utensils is lubricated with a separator agent.
Acrylic gypsum is kneaded in a plastic container. First, the resin is poured into the container, then the polymer is poured.
It's a matter of proportionality
Here it is useful to follow the proportions. Eye measurement is not allowed.
Let's take the whole set as 10 parts: 7 parts of resin and 3 parts of powder. Ratio for initial preparation: 6 parts resin and 3 parts powder. Gently and thoroughly mix, achieving the consistency of "like on pancakes - without lumps." The waiting time for the complete penetration of the powder into the resin is taken equal to one hour, provided that the temperature at the place of work is comfortable.
Now is the time to use the reserved seventh of the resin; a hardener is added to the component in a separate container; mix, wait for the complete dissolution of the hardener and add to the prepared solution.
Proportions in kilograms:
- 1, 8 kg of resin.
- 0.9kg acrylic powder.
- The weight of the prepared composition is 2.7 kg.
- Hardeners take 2% of the weight of the finished mixture - 2.7 kg2%=54 grams.
Pour 300 grams of resin residue into a separate plastic container, add 54 grams of hardener. By shaking, the hardener is convinced to dissolve without residue. The resulting 354 grams of the mixture is poured into the prepared solution and mixed.
Action should be quick. In a warm atmosphere, polymerization will be completed in half an hour. If the product is meant to be colored, then paste is mixeddesired color. To avoid the effect of plastic, washed river sand, marble stones are added to the molding mass; aluminum powder or crushed stone of small fractions.
Products of small formats will finally harden in 2 hours after pouring the mixture into the molding container. Overall tiles, countertops and columns "dry" for a day.
Before starting work, ensure the ventilation of the room. Put on cotton clothes. Take protective measures: on hands - rubber gloves, on eyes - goggles like swimmers, on the nose and mouth - a respirator. Throw gloves away when you're done, as laundering is more expensive. If the glasses do not prevent the components of the acrylic plaster from getting into the eyes, you should quit the session and immediately rinse your eyes in running water for at least 15 minutes.
Loose and liquid substances are stored in airtight containers with a tight lid. If the home craftsman purchased the resin in a package and did not use the material 100%, then the remains can be stored on the balcony or in the garage for 12 months. Resin tolerates the Ural frosts. It is not necessary to store a consumable component in the living space.
The second component of acrylic gypsum - the hardener - ignites. Therefore, the component is kept cool and moist.
Compliance with these simple and understandable rules will help you have fun in your free time making interior items from artificial plaster.