Preparation of shell micro-powder reinforced super-high molecular weight polyethylene fibre composite non woven cloth
A technology of polyethylene fiber and ultra-high molecular weight, which is applied in the direction of polymer adhesive additives, adhesive additives, textiles and papermaking, etc., and can solve the problems of composite non-woven fabrics, such as the influence of comprehensive performance, poor comprehensive mechanical strength, and increased load.
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Embodiment 1
[0033] Disperse a certain amount of pretreated shell powder in the ethanol solution under the action of ultrasound, the weight ratio of shell powder: ethanol is 1:5, then add titanate coupling agent DNZ-201, the concentration is 25wt%, coupling agent The added amount is 2% of the fine shell powder, heated and refluxed under stirring, and reacted for 8-12 hours, and then the filtered shell fine powder is dried and ground to obtain the shell fine powder modified by the coupling agent.
[0034] Mix a certain amount of modified shell powder with the adhesive, stir at 60-80°C for 1-2h, and vacuum defoam for later use. The reinforcement UHMWPE fibers are wound in parallel on the winder, and then glued on the UHMWPE fibers (or the UHMWPE fibers are immersed in the adhesive). The number of glue application is 1-2 times, pay attention to the uniform application of glue. The adhesive used in this embodiment is isoprene rubber, which is soluble in water by weight ratio of 20%-60%. After...
Embodiment 2
[0038] In addition to the addition of shell powder is 4.4g / m 2 Except for the non-weft cloth, the others were the same as in Example 1 to obtain a composite non-weft cloth.
[0039] Bulletproof effect: 40 layers, 400mm×400mm, AD=150g / m 2The UD materials are stacked neatly on the target frame with the backing of clay. According to the GA141-2001 test standard, the Type 54 7.62mm pistol and the Type 51 ordinary bullet (lead-core bullet) are used. The measured value is: V 50 ≥500m / s; Depression of backing material <25mm.
[0040] Conduct temperature adaptability test: put the bulletproof non-weft fabric of this embodiment in a constant temperature box at -25°C or 60°C for at least 4 hours, and then conduct the above shooting test. The result meets the standard requirements of GA141-2001.
Embodiment 3
[0042] Except that the titanate coupling agent was changed to epoxy resin prepolymer, the others were the same as in Example 1 to obtain a composite non-woven fabric. The mixing amount of shell powder is 7.2g / m 2 No weft.
[0043] Bulletproof effect: 40 layers, 400mm×400mm, AD=160g / m 2 The UD materials are stacked neatly on the target frame with the backing of clay. According to the GA141-2001 test standard, the Type 54 7.62mm pistol and the Type 51 ordinary bullet (lead-core bullet) are used. The measured value is: V 50 ≥540m / s; Depression of backing material <25mm.
[0044] Conduct temperature adaptability test: put the bulletproof non-weft fabric of this embodiment in a constant temperature box at -25°C or 60°C for at least 4 hours, and then conduct the above shooting test. The result meets the standard requirements of GA141-2001.
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