Method for fabricating non-woven fabric from flax and composite material
A non-woven fabric and a manufacturing method technology are applied in the manufacturing field of fiber non-woven fabric supports and composite materials thereof to achieve the effects of cost saving, easy operation and simple operation method
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Embodiment 1
[0024] The manufacturing method of flax nonwovens includes stewing, opening, carding, net laying and needle punching; the average length of flax fibers used is 16.6cm, and the average fineness is 19.6μm; the stewing process is 5% by weight of flax fibers The commercially available He Maoshui was stewed for 24 hours; the acupuncture process was as follows: first low-frequency pre-punching to reinforce the flax fiber web, pre-punching once at a frequency of 600r / min; The needle punching frequency is 800r / min, the net is cross-laid, and the needle punches twice. The flax nonwoven fabric produced has a thickness of 5.56mm and a fixed weight of 672.92g / m 2 .
[0025] Utilize the gained needle-punched flax nonwovens, adopt described vacuum infusion method to manufacture flax nonwovens reinforced composite material, process parameter is: the weight formula component of configuration resin is: unsaturated polyester resin 196s: initiator: accelerator =100: 1.2: 1.5; Initiator is coppe...
Embodiment 2
[0028] The average length of the flax fibers used in the manufacture of nonwovens is 6.6cm, and the average fineness is 12μm; when stewing, evenly add 2% of the weight of the flax fibers and hair water, and when needle-punching flax nonwovens, change the way of laying the net, that is, use Parallel laying method, needling once, needling frequency 650r / min, the thickness of flax nonwovens produced is 6.39mm, and the fixed weight is 857.39g / m 2 . Others are the same as embodiment 1.
[0029] The weight formula component of making composite material described resin is: unsaturated polyester resin 196s: initiator: promotor=100: 0.8: 1.2; Suction injection vacuum pressure is-0.085Mpa, and suction injection time is 30 minutes, gel The time was 20 minutes, and the remainder was the same as in Example 1. The resulting composite sheet measures 50 x 50 cm 2 .
[0030] The tensile and bending strength tests were carried out on the obtained composite material, and the tensile strength...
Embodiment 3
[0032] The average length of the flax fibers used in the manufacture of nonwovens is 2.8cm, and the average fineness is 40μm; 3% of the weight of the flax fibers is evenly added with wool water when stewing. Puncture 1 time, acupuncture frequency is 650r / min; main pricking frequency is 850r / min, acupuncture 3 times, other processes are the same as in Example 1. The flax nonwoven fabric produced has a thickness of 5.56mm and a fixed weight of 672.92g / m 2 .
[0033] The weight formula component of making composite material described resin is: unsaturated polyester resin 196s: initiator: promotor=100: 1.0: 1.2; Suction and injection vacuum pressure is-0.085Mpa, and suction injection time is 2 ~ 5 minutes, coagulating Glue time is 30 minutes, remaining is the same as embodiment 1. The resulting composite sheet measures 50 x 50 cm 2 .
[0034] The tensile and bending strength tests were carried out on the obtained composite material, and the tensile strength was 58.59MPa; the b...
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