Method for producing bulletproof material
A manufacturing process and bulletproof technology, which is applied in the field of composite material manufacturing, can solve problems such as interlayer air bubbles that cannot be eliminated, one-sided extrusion damage, and materials that cannot be completely shaped, and achieve the effect of reducing air bubbles and one-sided extrusion damage and stable performance
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Embodiment 1
[0097] In this example, the third embodiment of the present invention described above is used.
[0098] The raw material is a continuous polyethylene fiber non-weft fabric coil (UD coil material) after orthogonal lamination, that is, a polyethylene fiber orthogonal non-weft fabric wound on a roller, with a width of 1.25m and a surface density of 130±8g / m 2 . The shaping process adopts the process method described in the present invention, and simultaneously heat-presses 4 polyethylene fiber orthogonal non-weft cloth layers, and the unwinding method is selected as active unwinding, the predetermined length is 1.20m, and the pressing temperature is 110 ± 2°C, the initial stage pressure is 3MPa, and the time is 5-10s; the pressure of the holding stage is 23MPa, and the time is 80-100s; Wherein, just before the thermocompression molding starts, the polyethylene fiber orthogonal non-weft fabric that is unwound is pulled to the unfolded state by traction force; The bulletproof m...
Embodiment 2
[0102] In this example, the second embodiment of the present invention described above is used.
[0103] The material used in this example is a continuous UD coil after orthogonal lamination, with a width of 1.25m and a surface density of 130±8g / m 2 . The shaping process adopts the process method described in the present invention to press a polyethylene fiber orthogonal non-weft cloth, select the unwinding method as passive unwinding, the predetermined length is 0.65m, the temperature is 110±2°C, and the initial stage pressure 3MPa oil pressure, time 5s, holding section pressure 23MPa oil pressure, time 60-80s, shaping section pressure 10MPa oil pressure, time 10s, average production speed 0.78m / min. The bulletproof performance parameter V50 of the bulletproof material produced in Example 2 is 495m / s. For specific test data, please refer to Table 1.
[0104] The bullet-proof material obtained in this embodiment can be completely shaped, and the performance is stable after ...
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