Preparation and application of binary high-silica glass fiber infiltrating agent
In response to the problems of binary high-silica glass fibers to erosion,poor stability,difficulties in textile processing,and the challenge of preventing water erosion of glass fiber strands by existing universal impregnating agents,vegetable oil was used as raw material,which is modified by alkali-catalysed ester exchange method to prepare an environmentally friendly infiltrant medium component-vegetable oil methyl ester,which has low viscosity and good stability,and blending it with antioxidants and film-forming agents to obtain a binary high silica glass fiber wetting agent.The chemical structure,average molecular weight,viscosity,and stability of vegetable oil before and after modification were compared and analyzed.The coating properties of the infiltrating agent and the bundling and mechanical properties of the raw yarn were characterized,and the influence of the infiltrating agent on the acid leaching process of the raw yarn was studied.The results show that the molecular weight and viscosity of modified vegetable oil methyl ester are significantly reduced,and the stability is good.The prepared infiltrating agent can effectively protect the structure of binary high silica glass fiber raw yarn,and its fracture strength loss rate index meets the require-ments of enterprises,improving fiber processing performance and providing reference for the development of high-silica glass fiber industry.
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