PVC sheet pile used for retaining and protecting for foundation excavation and preparation method of sheet pile
A PVC board and composite technology, applied in the field of civil engineering, can solve the problems of high stiffness, low cost and high cost of sheet piles, and achieve the effects of high stiffness, good UV resistance and cost reduction.
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Embodiment 1
[0022] The raw material formula for preparing PVC sheet piles: 100 parts of PVC, 20 parts of calcium carbonate, 0.5 parts of stearic acid, 0.5 parts of polyethylene wax, 2 parts of CPE, 2 parts of MBS, 4 parts of Ca-Zn composite stabilizer.
[0023] The method for preparing PVC sheet piles is as follows:
[0024] (1) Mix the PVC matrix and the corresponding additives in a high-speed mixer, raise the temperature to 120°C, discharge the material into a jacketed water-cooled mixer, continue mixing until the temperature drops to 40°C, and discharge to the silo;
[0025] (2) Single-screw extrusion: Extrude the material in the silo through single-screw extrusion, vacuum shaping, water-cooling shaping, and cutting to obtain the final product. The extrusion molding control conditions are:
[0026] The temperature in Zone 1 is 190°C, the temperature in Zone 2 is 185°C, the temperature in Zone 3 is 185°C, the temperature in Zone 4 is 185°C, the temperature in Zone 5 is 180°C, the temper...
Embodiment 2
[0028] The raw material formula for preparing PVC sheet piles: 100 parts of PVC, 40 parts of calcium carbonate, 0.5 parts of stearic acid, 0.5 parts of polyethylene wax, 6 parts of CPE, 4 parts of MBS, 8 parts of Ca-Zn composite stabilizer, 2 parts of Etrolene .
[0029] The method for preparing PVC sheet piles is as follows:
[0030] (1) Mix the PVC matrix and the corresponding additives in a high-speed mixer, raise the temperature to 120°C, discharge the material into a jacketed water-cooled mixer, continue mixing until the temperature drops to 40°C, and discharge to the silo;
[0031] (2) Single-screw extrusion: Extrude the material in the silo through single-screw extrusion, vacuum shaping, water-cooling shaping, and cutting to obtain the final product. The extrusion molding control conditions are:
[0032] The temperature in Zone 1 is 200°C, the temperature in Zone 2 is 195°C, the temperature in Zone 3 is 195°C, the temperature in Zone 4 is 195°C, the temperature in Zone...
Embodiment 3
[0034] The raw material formula for preparing PVC sheet piles: 100 parts of PVC, 35 parts of calcium carbonate, 1.5 parts of stearic acid, 0.5 parts of polyethylene wax, 6 parts of CPE, 4 parts of MBS, 6 parts of Ca-Zn composite stabilizer, 1.5 parts of Etrolene .
[0035] The method for preparing PVC sheet piles is as follows:
[0036] (1) Mix the PVC matrix and corresponding additives in a high-speed mixer, raise the temperature to 130°C, discharge the material into a jacketed water-cooled mixer, continue mixing until the temperature drops to 45°C, and discharge to the silo;
[0037] (2) Single-screw extrusion: Extrude the material in the silo through single-screw extrusion, vacuum shaping, water-cooling shaping, and cutting to obtain the final product. The extrusion molding control conditions are:
[0038] The temperature in Zone 1 is 195°C, the temperature in Zone 2 is 190°C, the temperature in Zone 3 is 190°C, the temperature in Zone 4 is 190°C, the temperature in Zone 5...
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