A kind of natural hemp fiber reinforced cast nylon composite material and preparation method thereof
A cast nylon and fiber-reinforced technology, which is applied in the field of natural hemp fiber-reinforced cast nylon composite materials and its preparation, can solve problems such as easy water absorption, non-polymerization, and polymerization inhibition, and achieve simple preparation methods, low equipment requirements, and reduced cost effect
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Embodiment 1
[0035] Arrange the cut jute fiber in a vacuum carbonization furnace, protect it with nitrogen, raise the temperature from room temperature to 220 °C at a heating rate of 10 °C / min, keep it warm for 10 min, cool to room temperature, and store it in vacuum for later use; then complete the above heat treatment The jute fiber cloth is stacked to a suitable thickness, 35 parts are weighed and placed in a mold, the mold is sealed, and the temperature is raised to 130°C; 200 parts of caprolactam is added to a three-necked bottle with magnetic stirring, the temperature is raised to 130°C, and vacuum dehydration is carried out for 30 minutes; Then add 0.4 parts of NaOH, vacuum dehydrate at 130°C for 15 minutes; add 0.5 parts of TDI and stir evenly; quickly pump the above liquid into the mold with a vacuum pump, stop the pump when the liquid fully infiltrates the mold, keep it warm for 30 minutes, and open the mold. The natural jute fiber cloth reinforced cast nylon composite.
Embodiment 2
[0037] Arrange the cut ramie fiber in a vacuum carbonization furnace, protect it with nitrogen, raise the temperature from room temperature to 270 °C at a heating rate of 10 °C / min, keep it warm for 10 min, cool to room temperature, and store it in vacuum for later use; then complete the above heat treatment The ramie fiber cloth is stacked to a suitable thickness, 35 parts are weighed and placed in a mold, the mold is sealed, and the temperature is raised to 130°C; 200 parts of caprolactam are added to a three-necked bottle with magnetic stirring, the temperature is raised to 130°C, and vacuum dehydration is carried out for 30 minutes; Then add 0.4 parts of NaOH, and vacuum dehydrate at 130°C for 15 minutes; add 0.4 parts of TDI and stir evenly; quickly pump the above liquid into the mold with a vacuum pump, stop the pump when the liquid fully infiltrates the mold, keep it warm for 30 minutes, and open the mold. The natural ramie fiber cloth reinforced cast nylon composite mat...
Embodiment 3
[0039]Place the cut jute fiber felt in a vacuum carbonization furnace, protect it with nitrogen, and raise the temperature from room temperature to 220 °C at a heating rate of 10 °C / min, keep it warm for 10 min, cool to room temperature, and store it in vacuum for later use; The completed jute fiber mats are stacked to a suitable thickness, weigh 30 parts and place them in the mold, seal the mold, and heat up to 140°C; add 200 parts of caprolactam into a three-necked bottle with magnetic stirring, heat up to 140°C, and vacuum dehydrate for 30 minutes Then add 0.4 parts of NaOH, and vacuum dehydrate at 140°C for 15 minutes; add 0.5 parts of TDI and stir evenly; quickly pump the above liquid into the mold with a vacuum pump, stop the pump when the liquid fully infiltrates the mold, keep it warm for 30 minutes, and open the mold. Obtain the natural jute fiber mat reinforced cast nylon composite material.
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Abstract
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