Glass fiber drawing infiltration agent configuration and precautions

The application of infiltrating agent in glass fiber and 100 precautions in the production process of glass fiber I. General knowledge of infiltrating agent 1.Classification of glass fiber products? Yarn, cloth, felt, etc. 2. FRP products common classification and use? Hand-laying, mechanical molding, etc. 3. Principle of infiltrating agent? Interfacial bonding theory 4. What is the classification of the infiltrating agent? Reinforced, textile reinforced, etc. 5. What are the types of reinforced impregnants? Winding, pultrusion, SMC, spraying, etc. 6. What is the difference between the different impregnants in the production of glass fiber and products? Yarn classification, requirements, differences, grades, etc. 7. general infiltration of the composition of the formulation of what? The main film-forming agent, auxiliary film-forming agent, lubricant, antistatic agent, etc. 8. What are the infiltrating agent film-forming agent. What are the characteristics of each? Polyester resin, epoxy, PU, PVAC, acrylate, etc. 9. What are the functions of different formulations? Film-forming, stiffening, soaking, etc.10. Why do the formulations of impregnating agents vary from manufacturer to manufacturer? Process, climate, etc. 11. In the infiltrant formula which components of the adjustment will not affect the basic properties of the yarn, is adjustable? Lubricants, antistatic agents, auxiliary film-forming agents, etc. 12. What is the difference between the different lubricant components in the formula? Dry lubrication, wet lubrication, etc. 13. coupling agent in the glass fiber production process? What is the difference between different coupling agents? Interfacial bonding, reinforcing substrate resin is different, etc. 14. What is the difference between rigid yarn and soft yarn? How are they categorized? Stiffness, monofilament diameter, etc. 15. Why is there a difference in the production of medium alkali yarns in different climates? Moisture absorption, climate, etc. 16. pultruded profiles and tubes, what is the difference between the performance requirements of the yarn? Strength, toughness, etc. 17. What are the types of impregnants for textile yarns? Paraffin type, 711, 811, starch type, etc. 18. What are the types of modified starch? What are the characteristics of each? Esterification, etherification, etc. 19. What are the components of the textile impregnating agent? What is the role? Film-forming agents, plasticizers, lubricants, etc. 20. What are the main film-forming agents of the enhanced textile yarn impregnating agent? What are the characteristics of each? Epoxy, PU, polyester, PVAC, acrylate, etc. 21. What are the characteristics of different impregnants for textile yarns? Paraffin formulation, starch-based formulation, enhanced formulation, etc. 22. enhanced textile yarn infiltration agent coupling agent should be how to choose? Why? Reinforcement of different base material resin, coupling agent types and different roles, etc. 23. plastic plastics with glass fiber infiltration agent film-forming agent are? Epoxy, PU, polyester, acrylate, etc. 24. Why do we need fungicide in the wetting agent? What are the types? Emulsifiers, organotin, formalin II Infiltrant procurement, transportation, testing and other questions and answers 25. infiltrant procurement before the need to have what preparation and understanding? Species, related cost budget, use cycle, supporting materials, etc. 26. Infiltrating agent in transit and storage precautions? Temperature, leakage, labeling, etc. 27. wetting agent procurement of raw materials needed to understand and test and use what are the precautions? Properties of raw materials, the role of infiltration agent formulations, raw materials, test indicators, preparation process, the use of attention, etc. 28. coupling agent in the procurement of precautions? Purity, color, production date, packaging, etc. Precautions for preparation of wetting agent 29. How should the coupling agent be dispersed? Concentration, PH value, etc. 30. Why should glacial acetic acid be used when dispersing coupling agent? Hydrolysis is fast, polymerization is slow 31．Why will the hydrolyzed coupling agent fail? What is the best time to use? Principle of hydrolysis, time, etc. 32．What should be noted when preparing infiltrating agent? Dispersion of coupling agent, homogeneity of raw materials, the amount of preparation, etc. 33. pool kiln and unit kiln in the preparation of infiltrant what is the difference? Batch preparation, fast circulation, uniformity, etc. 34 pool kiln and unit kiln in the production process, the infiltrant recovery and recycling what is the difference? What are the considerations? Single and circulating pipeline, solid content, uniformity, etc. 35. infiltrating agent if there is a problem in the drawing process, what will happen? How to determine? How to deal with? Flying wire, broken head, excessive lubrication, etc. 36. starch infiltration agent preparation and precautions? Paste temperature, cooking, emulsification, use temperature, etc. 37. Preparation of good infiltration agent should be tested what indicators? Solid content, PH value, etc. Four different varieties of fibers in the production of what characteristics, requirements and common problems 38. short-cut yarn types are mainly? PA, BMC, PVAC, etc. 39. What is the difference between different types of short-cut yarn infiltration agent? Solid content, oil content, film-forming agent, etc. 40. According to the requirements of the use of felting yarns, what are the main types? Stiffness, oil content, felt classification, etc. 41. What is the difference between the wetting agents of the same type of felted yarn? Solid content, oil content, film forming agent, etc. 42. What are the main types of winding yarns? Direct yarns, braided yarns, medium alkali-free yarns, etc. 43. What are the different requirements for wetting agents for different types of winding yarns? Solid content, oil content, film-forming agent, etc. 44. What is the difference between pool kiln and unit kiln in the production process of winding yarn? What are the specific requirements of each section in the production process of winding yarn? What should be paid attention to? What are the visual judgment criteria for the quality of winding yarn? Drawing, withdrawal, soaking speed, hair, etc. 47. What are the precautions in the production process of jet yarn? What are the visual judgment criteria of its quality? What are the precautions in the production process of SMC yarn? What are the visual judgment criteria for good or bad quality? Drawing, withdrawal, penetration speed, stiffness, etc. 49. What are the precautions to be taken in the production process of felt-cutting yarns? What are the visual criteria for judging the quality? Drawing, withdrawal, penetration speed, stiffness, etc. 50. What are the precautions to be taken in the production of short-cutting yarns? What are the visual criteria for judging its quality? What is the difference between pool kiln and unit kiln in the production of jet yarn? Scale, productivity, stability, uniformity of bundling, etc. 52. What is the difference between a cell kiln and a unit kiln for the production of SMC yarns? What is the difference between a cell kiln and a unit kiln for the production of yarns for felts? Scale, productivity, stability, bunching uniformity, etc. 54. What is the influence of the quality of yarns for short-cut felting on the production of short-cut felts? Cutting process, flatness of the felt surface, permeability of the felt, etc. 55. Why do wound yarns and pultruded yarns become untwisted during production? Yarn softness, too much lubrication, etc. 56. What are the factors influencing the detangling of yarns for short-cut felts in the production process? Drawing process, infiltration agent formula, etc. 57. SMC yarn why there are 400 holes in the drawing of non-split groove and the difference between the two points? What is the impact? Product requirements are different 58 unit kiln in the production of SMC process yarn why there will be a lot of bending? The diameter of the drawing head, the drawing of the paper tube, the shrinkage of the infiltrant, etc. 59. Why is there a difference in the oil content of different yarn varieties? Differences in drying, migration of the infiltrant, etc. 60. What is the difference between epoxy-reinforced and polyester-reinforced winding yarns? Difference in coupling agent, difference in base material resin, etc. 61. What is the difference between the production section of textile yarn and the production section of other glass fibers? Oiler, satin cloth, monofilament diameter, hard cylinder drawing, yarn withdrawal, etc. V Infiltrant Influence on Fiberglass Quality 62. What are the factors affecting starch infiltrant migration? Cooking process, type of starch, etc. 63. What are the adverse effects of powder infiltrant migration? Uneven tension, breakage, streaking during post-treatment, etc. 64. Precautions to be taken during post-treatment of raw silk produced by starch infiltrant? Constant temperature, constant humidity, etc. 65. How to improve the water resistance of SMC? Selection of infiltrant components 66. Why should we control the amount of lubricant in the PP filament infiltrant? Interfacial segregation, wool 67. How to ensure that the PP filament reinforced thermoplastic particles at high temperatures do not change color? Impregnant materials, special temperature coupling agent, etc. 68. Textile yarn in the drawing process will appear what problems? How can they be solved? Bubble yarns, flying yarns, excessive lubrication 69. What are the common problems in the de-merging of textile yarns? How to solve? How to improve the strength of textile yarn? Collectivity, reduce the coefficient of sassafras, tension uniformity, etc. 71. What are the precautions when winding? Peeling, inner ring, etc. 72. winding tension effect of what? Hair, yarn tension, etc. 73. winding speed of the impact of what? Hair, sassafras, etc. Six glass fiber testing 74. SMC yarn in the test to detect what indicators? What are the effects of each index in use? Oil content, water content, stiffness, penetration, etc. 75. Jet yarn in the test to detect what indicators? What are the effects of each on use? Oil content, water content, stiffness, permeability, etc. 76. What are the indicators to be tested for short-cut yarns? What are the effects of each index on use? Drawing, short cutting, granularity, etc. 77. What are the precautions in the production process of pultruded yarn? What are the visual criteria for judging the quality of pultruded yarns? What are the performance indexes of winding yarn? How to test? Oil content, water content, permeability, mechanical properties of products, hair, etc. 79. What are the test properties of textile yarn? Oil content, water content, twist, count, monofilament strength, etc. VII Drying process requirements for different formulations 80. What is the difference between batch and tunnel oven drying? Temperature uniformity, continuity of drying, etc. 81. What is the optimum temperature for drying wound yarns? Curve drying, moisture removal, etc. 82. What is the effect of drying process on the film formation and quality of infiltrant for winding yarn? Migration, penetration, etc. 83. What is the optimum temperature for drying SMC yarn? Curve drying, moisture removal, film formation, etc. 84. What is the effect of drying process on film formation and quality of SMC yarn infiltrant? No film formation, insufficient cross-linking, etc. 85. What is the optimum temperature for drying spray yarns? Curve drying, moisture removal, film formation, etc. 86. What is the effect of drying process on the film formation and quality of spray yarn infiltrant? Poor film formation, penetration effects, etc. 87. What is the optimal temperature for drying yarns for short-cut felts? What are the advantages of microwave drying? Curve drying, moisture removal, etc. 88. drying process on the felt yarn infiltrant film formation and quality of what effect? Poor film formation, penetration effects, etc. 89. What is the optimum temperature for the drying of short-cut yarns? Curve drying, dehumidification, film formation, etc. 90. Why do short-cut yarns need to be dried twice in the production process? What is the best way to achieve the best results? The short-cutting process maintains granularity 91. Why are there differences in drying the same yarn in the same drying room? Yellowing, uneven temperature, etc. 92. Advantages and disadvantages of microwave drying? No localized heat, water evaporation, temperature is not adjustable, poor film formation, etc. VIII The impact of the quality of glass fibers on glass fiber reinforced plastic products 93 Why is it necessary to understand the relevant properties of the base material resin and processing technology? Targeted adjustment of the formula 94. Winding yarn in the yarn after combining the soft and hard for the use of what effect? Is it true that the higher the monofilament strength of the yarn, the better it is for the winding yarn? Does it mean that the higher the monofilament strength of the yarn, the better the performance of the fiberglass products? According to the requirements, the performance of the corresponding products, etc. 96. Why do users have problems in using the sprayed yarn after it passes the tests and other indexes? Spraying process, resin content, etc. 97. Why do users have problems with short-cut felt yarns after passing tests and other indicators? What are the technical requirements of glass fiber yarn for reinforced thermoplastics (PP filament)? Easy to break, less hair, high temperature resistance, mechanical properties, etc. 99. Why PP filament twisted in the twin-screw extruder to maintain a certain length? Product strength, impact resistance, easy to form 100. How to ensure a good combination of PP filament and thermoplastic? Impregnating agent components, coupling agent selection, etc.