The FRP products shall be pasted after the molds are corrected before production. The molds and products shall be properly placed after the FRP products are demoulded. What are the main reasons for the deformation of FRP products? The following is the introduction of SMC FRP mold manufacturer.
This situation usually occurs after demoulding. The main reason is that the product is demoulded before it is cured or the strength of the product reinforcing rib is not enough, and the surface is not reinforced with surface felt, resulting in large shrinkage or improper placement. The treatment method after mold deformation: before demoulding, the resin should be controlled to achieve full curing. The design of products should be improved. The products with more bends and bends should be separately molded. The surface felt should be added to the resin layer. The surface felt can not only cover the surface texture but also increase the product strength. Always check the deformation of the mold. After the product is demoulded, keep the mold well. If the area of the product is very large, it needs to be provided with reinforcing ribs. The demoulding can be started after the product is cured completely.
This mainly occurs when the gel coat layer is separated before laying, and the mold bulge is easy to appear in the corner. The main reason is that the styrene vapor is precipitated at the bottom of the mold, and the coating rubber coat is placed for too long and the coating rubber coat is too thick. If the swelling is caused by these reasons, it is recommended to place the mold at a proper position to make the styrene vapor radiate or use the exhaust machine to exhaust the system. The rubber coating layer near the general boundary shall not be sprayed too thick. It is recommended to reduce the amount of curing agent. The curing time of the FRP material of the mold is insufficient. The resin shrinkage is large. It is recommended to use mold resin for the first 2-3mm of the mold, and low shrinkage resin can be used for the thickening layer at the back to reduce the shrinkage. In addition, it is necessary to delay the time when the mold is separated from the wood mold, and use the wood mold to set the mold shape in the curing process. The reinforced structure is not firm, and the reinforced angle steel and square pipe shall be reasonable. Insufficient thickness of the mold: the thickness of the mold is generally 1.5 times of the thickness of the product. For large product molds, the cross-sectional area of the mold can be increased by adding thickening materials such as Bassa wood to achieve the purpose of increasing the rigidity of the mold.
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