Fusing alloying island fibre and production method thereof
A sea-island fiber, production method technology, applied in fiber processing, conjugated synthetic polymer rayon, filament/thread forming, etc., can solve the problems of difficulty in crimping, large difference in softening point temperature, strong rigidity of PET, etc. To achieve the effect of superior performance, good economic benefits and social benefits
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Embodiment 1
[0015] Embodiment 1. In this embodiment, PTT is selected as the component of the island, PE is the component of the sea, and the mass of PTT and PE account for 50% each. The number of islands in the section of the finished sea-island fiber is 200-500 islands / fiber, the linear density range is 3-100dtex, and the length is 38-65mm. The production method of present embodiment sea-island fiber is as follows:
[0016] a. Selection of raw materials: The main technical indicators of PTT slices are:
[0017] Intrinsic viscosity (dl / g) 0.92
[0018] Melting point (℃) 230±5
[0019] b-value 4.5
[0020] L value 85
[0021] Density (g / cm 3 ) 1.35
[0022] The main technical parameters of PE are:
[0023] Density (g / cm 3 ) 0.9162±0.0015
[0024] Melt flow rate (g / 10min) 50±7.0
[0025] b. Drying of PTT slices: vacuum-dry the PTT slices in a vacuum dryer to remove moisture and recrystallize. This embodiment adopts the method of fluidized bed pre-crystallization continuous drying...
Embodiment 2
[0040] Embodiment 2. In this embodiment, the mass ratio of PTT and PE is 70:30. During the production process, the frequency of the motor is adjusted so that PTT and PE are mixed at a mass ratio of 70:30. Other technical characteristics are the same as embodiment 1.
Embodiment 3
[0041] Embodiment 3. In this embodiment, the mass ratio of PTT and PE is 30:70. During the production process, the frequency of the motor is adjusted so that PTT and PE are mixed at a mass ratio of 30:70. Other technical characteristics are the same as embodiment 1.
[0042] The PTT mentioned in the present invention is polypropylene terephthalate; PE is polyethylene; PET is polyethylene terephthalate; PA6 is nylon 6.
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