Preparation method of basalt fiber fabric reinforced nylon 6 prepreg composite material
A fiber fabric and composite material technology, which is applied in the field of preparation of basalt fiber fabric reinforced nylon 6 prepreg composite material, can solve the problems affecting the performance of composite materials, low molecular weight monomers cannot be removed, and monofilament level impregnation cannot be guaranteed. Achieve excellent mechanical properties, low residual content, and dense composite materials
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[0017] Example 1
[0018] The preparation method of basalt fiber fabric reinforced nylon 6 composite prepreg is as follows:
[0019] (1) Weigh 600 parts by weight of caprolactam and heat it to 80°C to melt, remove the trace moisture by distillation under reduced pressure, and divide the molten liquid into two parts of equal weight, and add them to the liquid feeding devices A and B at a constant temperature of 80°C. in. Add 0.024 parts by weight of sodium caprolactam to the liquid feeding device A and mix them thoroughly; add 0.024 parts by weight of toluene-2,4-diisocyanate to the liquid feeding device B and mix them thoroughly; then, put the liquid feeding devices A and B into The mixture is added at the same speed figure 1 The medium-length-to-diameter ratio is 44, the extrusion temperature is 80℃, and the main engine speed is 500r / min twin-screw extruder 5 to form a reactive caprolactam melt, which is extruded to a dipping tank 6 with a constant temperature of 80℃ for basalt...
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[0022] Example 2
[0023] The preparation method of basalt fiber fabric reinforced nylon 6 composite prepreg is as follows:
[0024] (1) Weigh 200 parts by weight of caprolactam and heat it to 100°C to melt, remove trace moisture from it by distillation under reduced pressure, and divide the molten liquid into two equal parts by weight, and add them to liquid feeding devices A and B at a constant temperature of 100°C. in. Add 0.2 parts by weight of sodium caprolactam to the liquid feeding device A and mix them thoroughly; add 0.2 parts by weight of toluene-2,4-diisocyanate to the liquid feeding device B and mix them thoroughly; then, put the liquid feeding devices A and B into The mixture is added at the same speed figure 1 In a twin-screw extruder 5 with a medium length to diameter ratio of 44, an extrusion temperature of 100°C, and a main engine speed of 800r / min, it is evenly mixed to form a reactive caprolactam melt, which is extruded to a constant temperature 100°C dipping ...
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[0027] Example 3
[0028] The preparation method of basalt fiber fabric reinforced nylon 6 composite prepreg is as follows:
[0029] (1) Weigh 400 parts by weight of caprolactam and heat it to 90°C to melt, remove trace moisture from it by distillation under reduced pressure, and divide the molten liquid into two equal parts by weight, and add them to liquid feeding devices A and B at a constant temperature of 90°C. in. Add 2.008 parts by weight of sodium caprolactam to liquid feeding device A and mix them thoroughly; add 2.008 parts by weight of toluene-2,4-diisocyanate to liquid feeding device B and mix them thoroughly; then, liquid feeding device A and liquid are fed The mixture in device B is added at the same speed figure 1 The medium-length-diameter ratio is 44, the extrusion temperature is 90℃, and the main engine speed is 650r / min twin-screw extruder 5, which is evenly mixed to form a reactive caprolactam melt, which is extruded to a dipping tank 6 with a constant temper...
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