Polyurethane plate with high-strength inner core
By employing a double-layer polyurethane hot-pressed composite structure in the polyurethane board, adding a carbon plate and a polyurethane reinforcing layer, and interlacing aramid fibers and basalt fibers in the inner core, the problem of insufficient inner core strength was solved, resulting in a polyurethane board with high strength, low thermal conductivity, and impact resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-24
AI Technical Summary
The core strength of existing polyurethane boards is insufficient, making them prone to deformation and breakage under dynamic loads, which affects thermal insulation performance and poses safety hazards.
The system adopts a double-layer polyurethane hot-pressed composite structure, with an added filling cavity containing a double-layer carbon plate and a polyurethane reinforcing layer. Hexagonal micropores and interlaced aramid and basalt fibers are added to the inner core to form a fiber web, and the components are fixed by adhesive and positioning protrusions.
Significantly improves bending strength by 40%-50%, maintains thermal conductivity ≤0.025 W/m·K, suitable for impact-resistant applications, more durable and less prone to deformation, and improves the overall toughness and stability of the board.
Smart Images
Figure CN224028585U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to polyurethane board technical field especially relates to a polyurethane board of high inner core strength. BACKGROUND
[0002] Polyurethane board is a kind of board material made of polyurethane as main raw material, with excellent thermal insulation performance, good mechanical strength, chemical corrosion resistance and processing flexibility, widely used in building insulation, cold chain logistics, industrial pipeline insulation, automobile manufacturing, aerospace and other fields, can effectively improve energy utilization efficiency, reduce energy consumption, meet the special requirements of different scenes to material performance at the same time;
[0003] In practical application, especially in the construction of logistics and warehousing facilities, polyurethane board as the key thermal insulation material of the building envelope structure, the problem of insufficient inner core strength is particularly prominent, dynamic load caused by goods handling, equipment vibration and the like, easily leads to deformation, fracture phenomenon in long-term use of board, not only affects the thermal insulation performance of building, increases energy consumption, but also may cause safety hazards due to structural failure, seriously threatens the continuous and stable operation of logistics, therefore, the utility model provides a kind of polyurethane board of high inner core strength to solve the problems existing in the prior art. SUMMARY
[0004] In view of the above problems, the utility model provides a kind of polyurethane board of high inner core strength, the bending strength of the polyurethane board of high inner core strength is greatly improved, while maintaining the thermal conductivity, suitable for impact demand scene, more durable and not easy to deform.
[0005] To achieve the purpose of the utility model, the utility model realizes the following technical scheme: a kind of polyurethane board of high inner core strength, including first polyurethane layer, second polyurethane layer, first carbon plate, second carbon plate and polyurethane reinforcing layer, the middle position of the bottom of the first polyurethane layer and the middle position of the top of the second polyurethane layer are both provided with filling cavity, the first carbon plate, second carbon plate are respectively arranged at the bottom inside two groups of filling cavities, the polyurethane reinforcing layer is arranged in the filling cavity between the position of the first carbon plate and the second carbon plate;
[0006] The inside of the polyurethane reinforcing layer is provided with hexagonal micropores, and multiple groups of hexagonal micropores are uniformly distributed, and the polyurethane reinforcing layer is provided with reinforcing fibers.
[0007] Further improvement lies in that: the reinforcing fibers include aramid fiber and basalt fiber, the aramid fiber is transversely provided with multiple groups and penetrates the hexagonal micropores, the basalt fiber is longitudinally provided with multiple groups and penetrates the hexagonal micropores, and the aramid fiber and the basalt fiber are alternately connected.
[0008] Further improvement lies in that the first carbon plate is fixed with the upper filling cavity through adhesive, and the second carbon plate is fixed with the lower filling cavity through adhesive.
[0009] Further improvement lies in that positioning convex strips are arranged on the first carbon plate and the second carbon plate, and the positioning convex strips are arranged in multiple groups, the bottom of the filling cavity is provided with a positioning groove, and the positioning convex strip is matched with the positioning groove.
[0010] Further improvement lies in that the polyurethane reinforcing layer is a hard layer, and the polyurethane reinforcing layer is fixed between the first carbon plate and the second carbon plate through adhesive, and the size of the polyurethane reinforcing layer is matched with the size of the two groups of filling cavities combined.
[0011] Further improvement lies in that the first polyurethane layer and the second polyurethane layer are of the same size, and the first polyurethane layer and the second polyurethane layer are fixed through a hot-pressing adhesive layer.
[0012] Further improvement lies in that the thickness of the hot-pressing adhesive layer is 0.5-1mm.
[0013] The utility model discloses the beneficial effect is:
[0014] 1, the utility model discloses a double -layer polyurethane layer hot -pressing composite constitution is added in two layers filling cavity 6, sets up double -layer carbon plate as first heavy reinforcing, and adds polyurethane reinforcing layer 5 between double -layer carbon plate to fill full filling cavity 6 as the inner core as second heavy reinforcing, and polyurethane reinforcing layer 5 has hexagonal micro -hole, and after product verification, makes the bending strength greatly promote, and maintains the thermal conductivity coefficient simultaneously, is applicable to the impact demand scene, is more durable and does not deform easily.
[0015] 2, the utility model adds reinforcing fiber in hexagonal micro -hole 7, and the multiple groups of aramid fiber 8 and basalt fiber 11 are connected through the hexagonal micro -hole 7, and thus construct the fiber net, improve the toughness of the inner core and the whole plate, and do not break easily, and are more durable. ACCURATE DRAWINGS
[0016] Figure 1 It is the front view of the utility model;
[0017] Figure 2 It is the split schematic view of the utility model;
[0018] Figure 3 It is the polyurethane reinforcing layer structure schematic view of the utility model.
[0019] Among them: 1, the first polyurethane layer, 2, the second polyurethane layer, 3, the first carbon plate, 4, the second carbon plate, 5, the polyurethane reinforcing layer, 6, the filling cavity, 7, the hexagonal micro -hole, 8, the aramid fiber, 9, the positioning convex strip, 10, the positioning groove, 11, the basalt fiber. DETAILED DESCRIPTION
[0020] In order to deepen the understanding of the utility model, the utility model will be further described below in combination with examples, and the examples are only used to explain the utility model and do not constitute a limitation on the protection scope of the utility model. Embodiment
[0021] According to Figure 1 , 2 , 3, the embodiment proposes a polyurethane board with high core strength, comprising a first polyurethane layer 1, a second polyurethane layer 2, a first carbon plate 3, a second carbon plate 4 and a polyurethane reinforcing layer 5, the middle position of the bottom of the first polyurethane layer 1 and the middle position of the top of the second polyurethane layer 2 are both provided with a filling cavity 6, the first carbon plate 3 and the second carbon plate 4 are respectively arranged at the bottom inside the two groups of filling cavities 6, and the polyurethane reinforcing layer 5 is arranged inside the filling cavity 6 at the position between the first carbon plate 3 and the second carbon plate 4.
[0022] The inside of the polyurethane reinforcing layer 5 is provided with hexagonal micro-holes 7, and the hexagonal micro-holes 7 are uniformly distributed in multiple groups, and the polyurethane reinforcing layer 5 is provided with reinforcing fibers. When manufacturing, double-layer polyurethane layers are hot-pressed and combined to form, a filling cavity 6 is additionally arranged between the two layers, double-layer carbon plates are arranged as the first reinforcement, and a polyurethane reinforcing layer 5 is additionally arranged between the double-layer carbon plates to fill the filling cavity 6 as the core as the second reinforcement, the polyurethane reinforcing layer 5 is provided with hexagonal micro-holes, through product verification, the bending strength is improved by 40%-50% (up to 4-6 MPa), and meanwhile the heat conductivity coefficient is maintained at ≤0.025 W / m·K, the heat preservation performance is maintained, it is suitable for impact-resistant demand scenes, and it is more durable and not easy to deform.
[0023] The reinforcing fibers comprise aramid fibers 8 and basalt fibers 11, the aramid fibers 8 are transversely provided in multiple groups and penetrate the hexagonal micro-holes 7, the basalt fibers 11 are longitudinally provided in multiple groups and penetrate the hexagonal micro-holes 7, and the aramid fibers 8 and the basalt fibers 11 are alternately connected. The reinforcing fibers are additionally arranged in the hexagonal micro-holes 7, the multiple groups of aramid fibers 8 and basalt fibers 11 are alternately connected and penetrate the hexagonal micro-holes 7, thereby constructing a fiber network, improving the toughness of the core and the whole board, not easy to break, and more durable.
[0024] The first carbon plate 3 is fixed with the upper filling cavity 6 through adhesive, and the second carbon plate 4 is fixed with the lower filling cavity 6 through adhesive. The first carbon plate 3 and the second carbon plate 4 are both provided with positioning convex strips 9, and the positioning convex strips 9 are provided in multiple groups, the bottom inside the filling cavity 6 is provided with a positioning groove 10, and the positioning convex strips 9 are matched with the positioning groove 10. The adhesive fixing, the matching of the positioning convex strips 9 and the positioning groove 10, and the matching of the positioning convex strips 9 and the positioning groove 10 improve the installation stability of the carbon plate 3 and are not easy to deviate.
[0025] The polyurethane reinforcing layer 5 is a hard layer, and the polyurethane reinforcing layer 5 is fixed between the first carbon plate 3 and the second carbon plate 4 by adhesive, the size of the polyurethane reinforcing layer 5 is matched with the size of the two groups of filling cavities 6 combined. The polyurethane reinforcing layer 5 is a hard layer, has higher strength, is fixed by adhesive, ensures stability, fills the filling cavities 6 as an inner core, cooperates with the characteristics of the hexagonal micro-holes 7, and greatly improves the bending strength. Embodiment
[0026] According to Figure 1 , 2 , 3, the embodiment provides a polyurethane board with high inner core strength, which comprises a first polyurethane layer 1, a second polyurethane layer 2, a first carbon plate 3, a second carbon plate 4 and a polyurethane reinforcing layer 5, the middle position of the bottom of the first polyurethane layer 1 and the middle position of the top of the second polyurethane layer 2 are both provided with a filling cavity 6, the first carbon plate 3 and the second carbon plate 4 are respectively arranged at the bottom inside the two groups of filling cavities 6, and the polyurethane reinforcing layer 5 is arranged inside the filling cavity 6 at the position between the first carbon plate 3 and the second carbon plate 4.
[0027] The inside of the polyurethane reinforcing layer 5 is provided with hexagonal micro-holes 7, a plurality of groups of the hexagonal micro-holes 7 are uniformly distributed, and the polyurethane reinforcing layer 5 is provided with reinforcing fibers. In manufacturing, the double-layer polyurethane layer is hot-pressed and compounded, the filling cavity 6 is additionally arranged between the two layers, the double-layer carbon plate is arranged as the first reinforcement, the polyurethane reinforcing layer 5 is additionally arranged between the double-layer carbon plate to fill the filling cavity 6 as an inner core as the second reinforcement, the polyurethane reinforcing layer 5 has the hexagonal micro-holes, the bending strength is improved by 40%-50% (up to 4-6 MPa) through product verification, meanwhile, the heat conductivity coefficient ≤0.025 W / m·K is maintained, the polyurethane board is suitable for scenes with impact resistance requirements, and is more durable and not easy to deform.
[0028] The reinforcing fibers comprise aramid fibers 8 and basalt fibers 11, a plurality of groups of the aramid fibers 8 are transversely arranged and penetrate through the hexagonal micro-holes 7, a plurality of groups of the basalt fibers 11 are longitudinally arranged and penetrate through the hexagonal micro-holes 7, and the aramid fibers 8 and the basalt fibers 11 are connected in an interlaced mode. The reinforcing fibers are additionally arranged in the hexagonal micro-holes 7, the plurality of groups of the aramid fibers 8 and the basalt fibers 11 are connected in an interlaced mode and penetrate through the hexagonal micro-holes 7, thereby constructing a fiber network, improving the toughness of the inner core and the whole board, and being not easy to break and more durable.
[0029] The first polyurethane layer 1 and the second polyurethane layer 2 are of the same size, and the first polyurethane layer 1 and the second polyurethane layer 2 are fixed through a hot-pressing adhesive layer. The thickness of the hot-pressing adhesive layer is 0.8 mm. Two-component polyurethane layers are used for bonding, the thickness of the adhesive layer is controlled to be 0.8 mm, and the hot-pressing process (80 DEG C x 1 hour) ensures that the bonding strength is greater than or equal to 8 MPa, so as to avoid the overall strength attenuation caused by the surface layer peeling.
[0030] The polyurethane plate with high core strength is composed of double-layer polyurethane layers hot-pressed and combined, a filling cavity 6 is additionally arranged between the two layers, double-layer carbon plates are arranged as the first reinforcement, a polyurethane reinforcing layer 5 is additionally arranged between the double-layer carbon plates to fill the filling cavity 6 as the second reinforcement, the polyurethane reinforcing layer 5 has a hexagonal micro-hole, product verification is performed, the bending strength is increased by 40%-50% (up to 4-6 MPa), meanwhile, the heat conductivity coefficient is maintained to be less than or equal to 0.025 W / m·K, the heat preservation performance is maintained, the polyurethane plate is suitable for impact-resistant demand scenes and is more durable and not easy to deform. Meanwhile, reinforcing fibers are additionally arranged in the hexagonal micro-hole 7, a plurality of aramid fibers 8 and basalt fibers 11 are connected through the hexagonal micro-hole 7, a fiber network is constructed, the toughness of the core and the whole plate is improved, the plate is not easy to break and is more durable.
[0031] The basic principle, main features and advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A polyurethane board with high core strength, comprising a first polyurethane layer (1), a second polyurethane layer (2), a first carbon plate (3), a second carbon plate (4) and a polyurethane reinforcement layer (5), characterized in that: The first polyurethane layer (1) is provided with a filling cavity (6) at the middle position of the bottom, and the second polyurethane layer (2) is provided with a filling cavity (6) at the middle position of the top, the first carbon plate (3) and the second carbon plate (4) are respectively arranged at the bottom of the two groups of filling cavities (6), and the polyurethane reinforcing layer (5) is arranged in the filling cavity (6) at the position between the first carbon plate (3) and the second carbon plate (4). The polyurethane reinforcing layer (5) is provided with a plurality of groups of hexagonal micropores (7) which are uniformly distributed in the polyurethane reinforcing layer (5), and the polyurethane reinforcing layer (5) is provided with reinforcing fibers.
2. The polyurethane board having high core strength according to claim 1, characterized by: The reinforcing fibers include aramid fibers (8) and basalt fibers (11), the aramid fibers (8) are arranged in a plurality of groups in the transverse direction and penetrate the hexagonal micropores (7), the basalt fibers (11) are arranged in a plurality of groups in the longitudinal direction and penetrate the hexagonal micropores (7), and the aramid fibers (8) and the basalt fibers (11) are connected in an interlaced manner.
3. The polyurethane board having high core strength according to claim 1, characterized by: The first carbon plate (3) is fixed to the upper filling cavity (6) by adhesive, and the second carbon plate (4) is fixed to the lower filling cavity (6) by adhesive.
4. The polyurethane board having high core strength according to claim 1, characterized by: The first carbon plate (3) and the second carbon plate (4) are both provided with a plurality of groups of positioning convex strips (9), and the bottom of the filling cavity (6) is provided with a positioning groove (10), and the positioning convex strip (9) is matched with the positioning groove (10).
5. The polyurethane board having high core strength according to claim 1, characterized by: The polyurethane reinforcing layer (5) is a hard layer, and the polyurethane reinforcing layer (5) is fixed between the first carbon plate (3) and the second carbon plate (4) by adhesive, and the size of the polyurethane reinforcing layer (5) is matched with the size of the combination of the upper and lower groups of filling cavities (6).
6. The polyurethane board having high core strength according to claim 1, characterized by: The first polyurethane layer (1) and the second polyurethane layer (2) have the same size, and the first polyurethane layer (1) and the second polyurethane layer (2) are fixed by a hot-pressing adhesive layer.
7. A polyurethane board having high core strength according to claim 6, characterized in that: The thickness of the hot-pressing adhesive layer is 0.5-1mm.