Multi-Component Liquid Stratification

The casting liquid containing fillers shows solid-liquid stratification during storage or casting. The interlayer separation phenomenon gradually expands after the product is subjected to force or environmental action, seriously affecting structural integrity.

(1) In terms of density distribution: the density difference between the filler and the resin matrix is too large, density differences reflect uneven densification in various parts of the product. (2) In terms of material state: the liquid viscosity is too low to suspend the filler particles, abnormal viscosity affects the material's flow filling and impregnation capabilities. (3) Process factors: lack of anti-settling additives, this factor affects the product's '2079851475616104453 and final quality.

(1) Formula optimization: add a thixotropic agent (such as fumed silica) to improve anti-settling properties, determine the optimal addition amount through small-batch tests and verify its impact on the comprehensive performance of the product. (2) Material selection: re-stir evenly before use, establish material selection evaluation standards and determine the optimal plan through comparative tests. (3) Material selection: select fillers with a density closer to that of the resin., establish material selection evaluation standards and determine the optimal plan through comparative tests. (4) Preventive measures: establish interlayer bonding strength inspection standards, regularly sample interlayer shear strength, and monitor process parameter stability.

The essence of the interlayer separation problem is insufficient interfacial bonding force, which needs to be systematically improved from three aspects: impregnation quality, interlayer cleanliness, and process parameters.