A high-strength and high-memory composite polyurethane board with antifouling function and its preparation method
A technology of composite polyurethane and composite boards, which is applied in artificial islands, infrastructure engineering, construction, etc., can solve the problems of increasing the dynamic load and static load of the platform, the inability to prevent the growth of the protective outer layer, and the influence of the stability of the facility structure, etc., to achieve Prevent biofouling, increase anti-fouling function, solve anti-corrosion, anti-fouling and high-strength effects
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Embodiment 1
[0015] Add 4% organic silicon and 5% organic fluorine to modify the polyurethane resin, and degas it at 95 °C. According to modified polyurethane 70%, 6% alumina, 3% nano titanium dioxide, 5% ceramic fiber, 4% carbon fiber, 0.3% antioxidant, 5% coupling agent, 3.5% dispersant, 0.5% light stabilizer, 2.7 % carbon black, fully mixed and degassed at 110°C, extruded into a 1mm thick sheet with a twin-screw extruder, vulcanized at 95°C for 20 minutes, aged at room temperature for 1 day, cut according to the design requirements, and became a black sheet ;
[0016] The prepared composite polyurethane sheet has a tensile strength of 27MPa, a tear strength of 185kN / m, and a surface energy of 16.37mJ / m 2 . Suitable for antifouling protection of building installations in still water.
Embodiment 2
[0018] Add 7.5% organic silicon and 9% organic fluorine to modify the polyurethane resin, and degas it at 95 °C. According to modified polyurethane 60%, 2.5% graphene, 7% alumina, 3.5% metal fiber, 5% polyethylene fiber, 2.5% titanium dioxide, 0.5% antioxidant, 5% coupling agent, 2% light stabilizer, 3% dispersant, 7.5% titanium dioxide, 1.1% lemon, 0.4% yellow phthalocyanine blue, fully mixed and degassed at 115°C, extruded into a 3mm thick plate with a twin-screw extruder, vulcanized at 95°C for 90 minutes, Mature at room temperature for 3 days, cut according to the design requirements, and become a royal blue plate;
[0019] The prepared composite polyurethane sheet has a tensile strength of 54MPa, a tear strength of 236kN / m, an abrasion index of 154%, and a surface energy of 9.64mJ / m 2 . It is suitable for the antifouling protection of construction facilities located in the sea.
Embodiment 3
[0021] With embodiment 2 gained sheet material as surface material,
[0022] According to polyurethane 75%, 3% calcium carbonate, 8% polymer fiber free, 3% coupling agent, 2.5% dispersant, 4% zinc oxide, 1% antioxidant, 0.5% light stabilizer, 3% carbon black, in Fully kneaded and degassed at 115°C, extruded into a 2mm thick plate with a twin-screw extruder, vulcanized at 90°C for 60 minutes, and aged at room temperature for 2 days to prepare a black plate; with this plate as the back material, the surface Material, 0.2mm thick high-strength polyethylene cloth, and back material are uniformly heated to 105°C, hot-pressed and composited into one, and a 5.2mm-thick high-memory and high-strength composite plate is obtained;
[0023] The prepared high-memory and high-strength composite polyurethane sheet has a tensile strength of 114MPa, a tear strength of 536kN / m, an abrasion index of 154%, and a surface energy of 9.64mJ / m 2 . Suitable for anti-fouling protection of offshore oil...
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