Variable Glass Fiber Reinforced Reaction Injection Molding Technology Was Studied

Variable glass fiber reinforced reaction injection molding is widely used in automobiles, home appliances, building and other fields of the polyurethane plastic molding technology. Although this technology is widely used in many fields,there are still many problems still exist in the actual production process.This paper combined the actual production process of a domestic car inner decoration co., LTD.,, studied the process of products molding. The molding principle and the actual production process, the forming process of complex chemical reactions was analyzed.The technological parameters of several important molding process was determined,and the influence on the forming process and products quality was analyzed through raw material and process parameters.In the same selection process parameters and the same raw materials conditions, We conducted some performance test with different length and content of glass fiber products from different indexs, such as the density, tensile strength, bending strength, impact strength, compression strength and thermal sagging, hotline expansion coefficient,and so on. Finally, the test results were analyzed in theory.Used the simulation analysis software MoldFlow for the finite element simulation of variable glass fiber reinforced reaction injection molding.And used orthogonal experiment method to arrange the molding simulation experiment.Through the experiment,we got the total buckling deformation under different process conditions.Studied the warping deformation degree of the influence of different process parameters on the products, get the best process parameter combination through the differential analysis.