High-performance polyimide crimped short fiber and manufacturing method thereof
A technology of polyimide and polyimide length, which is applied in the field of high-performance polyimide curly short fiber and its preparation, can solve the problems of high cost and complicated process, and achieve good crimp performance and simple process , The effect of increasing the specific surface area
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Embodiment 1
[0022] 88 pieces of 1000D / 0.5k high-performance polyimide filaments are introduced from the bobbin frame to the cluster frame, assembled into a large bundle of 90,000 denier tows, and washed and wetted, and the temperature of the wetted water is controlled at 80°C; The large tow is introduced into the washing tank through the long-roller wire guide machine, wherein the long-roller wire guide machine is a seven-roller wire guide machine, the washing tank is a three-layer washing tank, and the washing temperature is 50°C; the polyimide after washing is long The fiber is dried by a six-roller dryer at a drying temperature of 125°C; after drying, it enters an oiling machine for sizing treatment at a sizing temperature of 30°C, and then is dried again with a dryer. The processing temperature is 120°C; after drying again, it enters the first electric heating plate and the second electric heating plate in turn, and then imports the wire receiving rack, wherein the heating temperature ...
Embodiment 2
[0024] 56 pieces of 200D / 0.2k high-performance polyimide filaments are introduced from the bobbin frame to the cluster frame, assembled into a large bundle of 60,000 denier filaments, and washed and wetted, and the temperature of the wetted water is controlled at 85°C; The large tow is introduced into the washing tank through the long-roller wire guide machine, wherein the long-roller wire guide machine is a seven-roller wire guide machine, the washing tank is a three-layer washing tank, and the washing temperature is 65°C; the polyimide after washing is long The fiber is dried by a six-roller dryer at a drying temperature of 140°C; after drying, it enters an oiling machine for sizing treatment at a sizing temperature of 25°C, and then is dried again with a dryer. The processing temperature is 145°C; after drying again, it enters the first electric heating plate and the second electric heating plate in turn, and then imports the wire receiving rack, in which the heating tempera...
Embodiment 3
[0026] 88 high-performance polyimide filaments of 1000D / 1.0k are introduced into the cluster frame from the bobbin rack, assembled into a large bundle of 90,000 denier filaments, and washed and wetted, and the temperature of the washed wet is controlled at 85°C; The large tow is introduced into the washing tank through the long roller guide machine, wherein the long roller guide machine is a seven roller guide machine, the washing tank is a three-layer washing tank, and the washing temperature is 70 °C; the polyimide after washing is long The fiber is dried by a six-roller dryer at a drying temperature of 120°C; after drying, it enters an oiling machine for sizing treatment at a sizing temperature of 15°C, and then is dried again with a dryer. The processing temperature is 120°C; after drying again, it enters the first electric heating plate and the second electric heating plate in sequence, and then imports the wire receiving rack, in which the heating temperature of the first...
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Abstract
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