玻璃钢风管
FRP air duct
手糊工艺
Hand lay-up
1) 首先在模具成型面上涂抹脱模剂(或在模具外表面包上一层透明的玻璃纸)，待充分干燥后，将加有引发剂(或固化剂)、促进剂等添加剂均匀涂刷在模具成型面上，随之在其上铺放裁剪好的玻璃布。然后在铺好的玻璃布上再涂刷氯氧镁水泥，并注意驱除气泡。涂刷好氯氧镁水泥浆后再铺上剪好的玻璃布，如此重复上述操作，直到达到设计和规范厚度。
1) First, apply mold release agent (or a layer of transparent cellophane on the surface of the mold) on the mold forming surface. After the mold is fully dried, evenly brush additives such as initiator (or curing agent) and accelerator on the mold forming surface, and then lay the cut glass cloth on it. Then brush magnesium oxychloride cement on the paved glass cloth, and pay attention to eliminate the bubbles. After brushing the magnesium oxychloride cement slurry, lay the cut glass cloth, repeat the above operations until the design and specification thickness are reached.
2) 风管表层浆料厚度以压平玻璃纤维网格布纹理为宜(可见布纹)。管壁表面不允许有密集气孔和漏浆，以避免承受弯曲拉应力(正风压)、弯曲压应力(负风压)时的应力集中。
2) The thickness of the slurry on the surface of the air duct is suitable to flatten the glass fiber grid fabric texture (visible fabric texture). Dense pores and leakage of slurry are not allowed on the surface of pipe wall to avoid stress concentration under bending tensile stress (positive wind pressure) and bending compressive stress (negative wind pressure).
3) 管体与法兰转角处应有过渡圆弧，过渡圆弧半径应为壁厚的0.8~1.2倍，才能提高悬臂状态法兰承载能力和避免应力集中。要求风管法兰处的玻璃纤维网格布应延伸至风管管体上。
3) There should be transition arc at the corner of pipe body and flange, and the radius of transition arc should be 0.8 ~ 1.2 times of the wall thickness, so as to improve the bearing capacity of cantilever flange and avoid stress concentration. It is required that the fiberglass mesh at the duct flange shall be extended to the duct body.
运用范围
Scope of application
玻璃钢风管可以应用于石油、化工及排水等行业。随着我国玻璃钢管道生产发展快，数量逐年上长，应用范围及部门也越来越广
FRP air duct can be used in petroleum, chemical and drainage industries. With the rapid development of FRP pipe production in China, the number of FRP pipes is increasing year by year, and the application scope and departments are becoming wider and wider