Detailed process of making FRP sculptures

by:Ennas      2022-02-22
FRP sculpture is a relatively common sculpture image. To make a FRP sculpture, you need to design and shape the model first, and then make the FRP and mold. Mold making is a very critical step. Once the mold is completed, the overall shape can be made. , And later do post-processing and so on. The detailed process of making FRP sculptures   1. Design and modelling    The design of FRP sculptures should consider the characteristics of materials and craftsmanship. FRP is easy to form beautiful streamlined products, highlighting the sense of the times of the work, and arc streamlined can be used in the design. Due to the light weight and high strength of FRP, it can produce works with strong dynamic feeling and small supporting area. Sometimes the surface layer needs to be post-coated. The gel coat has leveling properties and has a certain leveling effect under the action of tension during curing, which is not suitable for expressing fine texture. These should be carefully considered when designing. The original model can be made of clay. After the sculpture model is completed, it can be dried naturally, and then the FRP mold can be made.  2. The production of FRP    uses hand lay-up method. According to the shape and characteristics of the sculpture, from the perspective of facilitating molding and demolding, the mold is decomposed into several units for reworking. Shape them accordingly and combine them into a whole. Afterwards, the whole is processed and painted, and a glass fiber reinforced plastic sculpture work is completed.  3. Mold making    Mold making is the key to molding. Gypsum is often used for mold making, but the strength of plaster is low and it is easy to deform after a long time. Silicone rubber and FRP materials can be used to make molds. Silicone rubber is in a fluid state before use, with good flow and filling properties. An elastomer is formed through the cross-linking reaction, which has greater elastic deformation, and the water in the original mold has no effect on the cross-linking reaction. After cross-linking, the silicone rubber has good sealing performance and does not adhere to the original glass fiber reinforced plastic. Used as the surface layer of the glass fiber reinforced plastic mold, it can replicate the shape of the work with high quality, and it can be demolded smoothly. However, the cross-linked body is easy to deform and needs to support the carrier. The easy-to-shape feature of FRP is used as the carrier of the mold.  4. Mold making method   Silicon rubber is prepared, and the silicon rubber layer is applied on the original mold over 1mm later. After the silicone rubber is cross-linked, a glass fiber reinforced plastic layer of about 3 mm is formed on the silicone rubber. After curing, cut the mold along the divided unit blocks, and pay attention to simultaneously cut the glass fiber reinforced plastic layer and the silicone rubber layer. The connection ribs are made between the unit blocks and the setting grooves are set at the connection ribs to ensure that the connection ribs combine the unit block molds into a whole. After the work is completed, the FRP unit block is demolded, and then the silicone rubber layer is removed, and the removed silicone rubber is immediately put back into the FRP unit mold.  5. Molding manufacturing method    uses hand lay-up molding method, design ideas before manufacturing. Start from one end and combine a part of the paste product. After a part is cured, the mold is combined to continue the paste. Combine as many cell blocks as possible at once. A unit block is left later, and the unit block is pre-formed and glued to the overall sculpture. The parts of the sculpture that are difficult to make, such as the horns, legs, and tails of animals, can be roughly shaped with corresponding metal materials, and then glass fiber reinforced plastic is formed on the material and trimmed by polishing. The shape of the sculpture is more complicated and should be handled specially. Places that are difficult to place should be filled with resin first, and then glass fiber and checkered cloth should be laid. The length of the resin putty for the surface layer is preferably 10 mm, and the metal skeleton is buried in the sculpture during molding. Improve the rigidity and strength of the sculpture, increase the service life, and install it with a metal skeleton later.  6. u200bu200bPost-processing method   On the one hand, post-processing is to repair the partial defects of the product, and it is important to produce the surface effect. Commonly used surfaces are imitation copper and imitation bronze. Sculptures made of glass fiber reinforced plastics have bright colors, lines and beautiful shapes. It can be made into various effects of imitating gold, copper, and stone, expressing a vivid sense of the times. Good glass fiber reinforced plastic sculptures must be designed, modeled, formed, and processed to ensure that the quality of each link can be achieved.
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