High-fiber-content fiber-reinforced rigid polyurethane foam composite board and manufacturing method thereof
A polyurethane rigid foam and fiber-reinforced technology, which is applied in the field of high-fiber-reinforced polyurethane rigid foam synthetic boards and its production, can solve the problems of uneven impregnation of polyurethane and fibers, high viscosity of polyether polyols, and uneven strength. Achieve product specifications and performance diversification, increase the effect of reinforcing fiber content
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Embodiment 1
[0046] In terms of parts by mass, the formula of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: 90 parts of polyether polyol A with a hydroxyl value of 400-480 and a functionality of 1-3, a hydroxyl value of 60-160 and a functionality of 1-2 10 parts of polyether polyol B, 10 parts of flame retardant, 5 parts of hard foam stabilizer, 15 parts of coupling agent, 0.3 part of catalyst, 0.1 part of foaming agent, 0.3 part of antioxidant, 0.3 part of anti-ultraviolet agent, 120 parts of isocyanate; 430 parts of long fiber, 10 parts of chopped fiber, 5 parts of fiber mat. Among them, the reinforcing fiber content is 64%, and the production density is 1400±50Kg / m 3 Fiber-reinforced polyurethane rigid foam composite sheet specification: 260mm×50mm×3000mm. Parameter setting of crawler lamination host: running speed: 0.4m / min, temperature: 90°C / 60°C. Table 1 shows the properties of the synthetic board produced according to the f...
Embodiment 2
[0050] In terms of parts by mass, the formula of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: 95 parts of polyether polyol A with a hydroxyl value of 400-480 and a functionality of 1-3, a hydroxyl value of 60-160 and a functionality of 1-2 5 parts of polyether polyol B, 10 parts of flame retardant, 3 parts of hard foam stabilizer, 5 parts of coupling agent, 0.3 parts of catalyst, 0.1 part of foaming agent, 0.3 parts of antioxidant, 0.3 parts of anti-ultraviolet agent, 110 parts of isocyanate; 410 parts of long fiber, 10 parts of chopped fiber, 0 parts of fiber mat. Among them, the reinforcing fiber content is 65%, and the production density is 1200±50Kg / m 3 Fiber-reinforced polyurethane rigid foam composite sheet specification: 240mm×50mm×3000mm. Parameter setting of crawler lamination host: running speed: 0.6m / min, temperature: 90°C / 60°C. Table 2 shows the properties of the synthetic board produced according to the ...
Embodiment 3
[0054] In terms of parts by mass, the formula of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: 90 parts of polyether polyol A with a hydroxyl value of 400-480 and a functionality of 1-3, a hydroxyl value of 60-160 and a functionality of 1-2 5 parts of polyether polyol B, 15 parts of flame retardant, 5 parts of rigid foam stabilizer, 10 parts of coupling agent, 0.2 part of catalyst, 0.3 part of foaming agent, 0.5 part of antioxidant, 0.5 part of anti-ultraviolet agent, 115 parts of isocyanate; 520 parts of long fiber, 5 parts of chopped fiber, and 1 part of fiber mat. Among them, the reinforcing fiber content is 68.5%, and the production density is 1000±50Kg / m 3 Fiber-reinforced polyurethane rigid foam composite sheet specification: 500mm×30mm×3000mm. Parameter setting of crawler lamination host: running speed: 0.5m / min, temperature: 90°C / 70°C. The properties of the synthetic board produced according to the formula and...
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