Three-dimensional orthogonal spun linen reinforced polypropylene composite material
A technology of composite materials and hemp fabrics, applied in textiles and papermaking, synthetic resin layered products, lamination, etc., can solve the problems of low mechanical properties, mechanical anisotropy, and low damage tolerance, and achieve excellent mechanical properties , Improving the ability to resist impact damage and high production efficiency
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Embodiment 1
[0023] The preform is a three-dimensional orthogonal ramie woven fabric. The weft and Z yarns are both ramie yarns. Warp and weft yarn fineness is 560tex, Z yarn fineness is 350tex, warp density: 44 threads / 10cm, weft density: 40 threads / 10cm, width: 35cm, warp yarn 3 layers, weft yarn 4 layers, fabric thickness 3mm, according to heat Cut out the required size (30cm×30cm) during compression molding, put the fabric in an oven, and dry it at 105°C for 6 hours, and the moisture regain will reach 0.9%. The accompanying drawing is a schematic diagram of the three-dimensional orthogonal woven fabric structure. Use a polypropylene film with a thickness of 3mm and the same size as the fabric on the upper and lower sides of the fabric, use a flat vulcanizer to heat press, temperature 175°C, pressure 3MPa, time 2mins, then adjust the temperature to 210°C, pressure 5MPa, time 4mins, cool After that, the production and processing of the composite material board is completed.
Embodiment 2
[0025] The warp, weft and Z yarns of the fabric are all ramie yarns. Warp and weft yarn fineness is 190tex, Z yarn fineness is 117tex, warp density: 130 threads / 10cm, weft density: 125 threads / 10cm, width: 35cm, warp yarn 9 layers, weft yarn 10 layers, fabric thickness 4mm, according to heat Cut out the required size (30cm×30cm) during compression molding, put the fabric in an oven, and dry it at 105°C for 6 hours, and the moisture regain will reach 0.9%. The accompanying drawing is a schematic diagram of the three-dimensional orthogonal woven fabric structure. Use a polypropylene film with a thickness of 0.5mm and the same size as the fabric on the upper and lower sides of the fabric, use a flat vulcanizing machine to heat press at a temperature of 160°C, a pressure of 5MPa, and a time of 2mins, then adjust the temperature to 210°C, a pressure of 3MPa, and a time of 4mins. After cooling, the production and processing of the composite material plate is completed.
Embodiment 3
[0027] The warp, weft and Z yarns of the fabric are linen yarns. Warp and weft yarn fineness is 280tex, Z yarn fineness is 175tex, warp density: 90 threads / 10cm, weft density: 80 threads / 10cm, width: 35cm, warp yarn 6 layers, weft yarn 7 layers, fabric thickness 4mm, according to heat Cut out the required size (30cm×30cm) during compression molding, put the fabric in an oven, and dry it at 105°C for 6 hours, and the moisture regain will reach 0.9%. The accompanying drawing is a schematic diagram of the three-dimensional orthogonal woven fabric structure. Use a polypropylene film with a thickness of 3mm and the same size as the fabric to lay on the upper and lower sides of the fabric. Use a flat vulcanizer to heat press at a temperature of 160°C, a pressure of 4MPa, and a time of 3mins. Then adjust the temperature to 210°C, a pressure of 3MPa, and a time of 4mins. Cool down After that, the production and processing of the composite material board is completed.
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