Composite thermal insulation decorative plate

Abstract

The invention relates to a composite thermal insulation decorative plate which comprises a UHPC decorative panel, a thermal insulation layer and a UHPC structure back plate which are sequentially bonded. Wherein the formula raw materials of the UHPC decoration panel and the UHPC structure back plate comprise cement, microbeads, silica fume, machine-made sand, slag powder, water, a water reducing agent, steel fibers and basalt fibers; according to the invention, expensive quartz sand in the formula raw materials of the UHPC decorative panel and the UHPC structural back plate is replaced by the machine-made sand, and part of steel fibers in the formula raw materials of the UHPC decorative panel and the UHPC structural back plate are replaced by the basalt fibers, so that the use cost of fine aggregates and fibers for manufacturing the UHPC decorative panel and the UHPC structural back plate is reduced; therefore, the production and use cost of the composite heat-insulating decorative plate consisting of the UHPC decorative panel, the heat-insulating layer and the UHPC structural back plate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of new building materials, in particular to a composite thermal insulation decorative board. Background Art

[0002] Ultra-high performance concrete building insulation decoration integrated board is an innovative building material that combines excellent insulation performance and beautiful decorative effect. At present, building insulation decoration integrated board has been widely used in exterior walls, roofs and other parts, and is commonly seen in high-rise buildings, public facilities and affordable housing projects. It not only improves the appearance of the building, but also effectively reduces the external heat exchange of the building, which helps to improve the comfort of living or use.

[0003] Although UHPC building insulation and decoration integrated panels have broad prospects, there are still some shortcomings, such as the relatively high production cost of UHPC building insulation and decoration integrated panels, which may affect its market promotion. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a composite thermal insulation decorative board to solve the problem of high production and use costs of conventional UHPC building thermal insulation decorative integrated boards in the prior art.

[0005] To achieve the above object, the present invention provides a composite thermal insulation decorative panel and a preparation method thereof, comprising a UHPC decorative panel, a thermal insulation layer and a UHPC structural back panel bonded in sequence;

[0006] The raw materials of the UHPC decorative panel and the UHPC structural backboard include cement, microspheres, silica fume, machine-made sand, slag powder, water, water reducing agent, steel fiber and basalt fiber.

[0007] By adopting this technical solution, all the quartz sand in the conventional formula raw materials of UHPC decorative panels and UHPC structural backboards is replaced with machine-made sand, which reduces the cost of fine aggregate, thereby reducing the production and use costs of UHPC decorative panels and UHPC structural backboards, and further reducing the production and use costs of composite thermal insulation decorative panels composed of UHPC decorative panels, thermal insulation layers and UHPC structural backboards;

[0008] Basalt fiber is added to the conventional formula raw materials of UHPC decorative panels and UHPC structural backboards, and part of the steel fiber is replaced by basalt fiber. The remaining steel fiber is used to increase the structural strength of the UHPC decorative panels and UHPC structural backboards after molding. This not only ensures the strength requirements of the UHPC decorative panels and UHPC structural backboards in the composite thermal insulation decorative panels, but also reduces the fiber cost because basalt fiber is cheaper than steel fiber, thereby reducing the production and use costs of the UHPC decorative panels and UHPC structural backboards, and further reducing the production and use costs of the composite thermal insulation decorative panels composed of the UHPC decorative panels, thermal insulation layers and UHPC structural backboards.

[0009] Furthermore, the raw material mix ratio of the UHPC decorative panels and UHPC structural back panels per cubic meter is designed to be 750 kg / m 3 、Microbeads 100kg / m 3 、Silica fume 100kg / m 3 、Machinery sand 1100kg / m 3 , slag powder 150kg / m 3 , water 200kg / m 3 , water reducing agent 18kg / m 3 , Steel fiber 60kg / m 3 and basalt fiber 40kg / m 3 .

[0010] By adopting this technical solution, the raw materials for UHPC decorative panels and UHPC structural backboards can use machine-made sand to replace 100% of quartz sand compared to conventional raw materials, reducing the cost of fine aggregate; and use basalt fiber to replace 40% of steel fiber by volume, reducing fiber costs.

[0011] Further, it also includes bonding mortar;

[0012] The UHPC decorative panel and the UHPC structural back panel are respectively bonded and fixed to both sides of the thermal insulation layer by the bonding mortar.

[0013] By adopting this technical solution, the UHPC decorative panel, the thermal insulation layer and the UHPC structural back panel are integrally connected to form a composite thermal insulation decorative panel structure.

[0014] Furthermore, the thermal insulation layer is inorganic fiber felt.

[0015] By adopting this technical solution, the inorganic fiber felt itself has high flame retardant properties, excellent thermal insulation effect, environmental protection and sustainability, which correspondingly makes the composite thermal insulation decorative board have high flame retardant properties, excellent thermal insulation effect, environmental protection and sustainability.

[0016] Furthermore, it also includes a plurality of back bolt connectors arranged in an array on the back plate of the UHPC structure;

[0017] The side of the back bolt connector facing away from the UHPC structure back plate and bonded to the thermal insulation layer passes through to the outside of the UHPC structure back plate.

[0018] By adopting this technical solution, the back bolt connector is integrally connected while the UHPC structural back panel is formed, and the composite thermal insulation decorative panel can be directly connected to other objects through the back bolt connector, thereby simplifying the installation process.

[0019] Further, it also includes a plurality of pull ropes;

[0020] One end of the pull rope is connected to the back bolt connector, and the other end of the pull rope passes through the thermal insulation layer and is connected to the UHPC decorative panel.

[0021] By adopting this technical solution, pull ropes are set to achieve the connection between the opposite surfaces of the UHPC decorative panel and the UHPC structural backboard, so that the composite insulation decorative panel composed of the UHPC decorative panel, the insulation layer and the UHPC structural backboard has higher self-stability and improves the overall impact resistance and deformation resistance.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By replacing the expensive quartz sand in the formula raw materials of UHPC decorative panels and UHPC structural backboards with machine-made sand, the cost of fine aggregate used in making UHPC decorative panels and UHPC structural backboards is reduced, thereby reducing the production and use costs of composite thermal insulation decorative panels composed of UHPC decorative panels, thermal insulation layers and UHPC structural backboards.

[0024] 2. By replacing part of the steel fibers in the raw materials of UHPC decorative panels and UHPC structural backboards with basalt fibers, the fiber usage cost of making UHPC decorative panels and UHPC structural backboards is reduced, and the production and use costs of the composite thermal insulation decorative panels composed of UHPC decorative panels, thermal insulation layers and UHPC structural backboards are further reduced.

[0025] 3. The integrated back bolt connector of the UHPC structural back panel in the composite thermal insulation decorative panel directly simplifies the installation process, and increases the stability of the overall structure by connecting it with the UHPC decorative panel through a drawstring, thereby improving the overall impact resistance and deformation resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a partial cross-sectional schematic diagram of the composite thermal insulation decorative panel of the present invention.

[0027] Explanation of the reference numerals: 1. UHPC decorative panel; 2. Adhesive mortar; 3. Insulation layer; 4. UHPC structural backboard; 5. Pull rope; 6. Back bolt connector. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Please see attached Figure 1 The present invention provides a composite thermal insulation decorative panel, comprising a UHPC decorative panel 1, a thermal insulation layer 3 and a UHPC structural back panel 4 bonded in sequence, which is a conventional sandwich composite structure; wherein the formula raw materials of the UHPC decorative panel 1 and the UHPC structural back panel 4 both include cement, microspheres, silica fume, machine-made sand, slag powder, water, water reducing agent, steel fiber and basalt fiber, and are prepared by mixing, molding, curing, demoulding, surface treatment and other processes;

[0030] Exemplarily, the formula raw material ratio is as follows:

[0031]

[0032] Among them, the machine-made sand 100% replaces the quartz sand in the conventional formula raw materials, which is 1100kg / m 3 , basalt fiber replaces 40% of steel fiber by volume, which is 40kg / m 3 , thereby reducing the cost of using fine aggregate and fiber;

[0033] Exemplarily, the UHPC decorative panel 1 and the UHPC structural back panel 4 made according to the above mix ratio have a 28-day compressive strength greater than 130 MPa, a flexural strength greater than 15 MPa, and a thickness of 5-15 mm.

[0034] The insulation layer 3 is an inorganic fiber felt. The inorganic fiber felt adopts a melt spinning process. After heating and melting natural stones such as coal gangue and slag, it is spun through a spinneret, cooled by air, stretched and solidified into fibers to prepare continuous inorganic fiber filaments. Subsequently, through the swinging and laying processes, the fiber aggregate is made into a fluffy and lightweight inorganic fiber felt, and finally a high-density insulation felt material is formed through a needle punching reinforcement process. It has the following significant characteristics: Class A flame retardant performance: meets fire protection requirements and has excellent fire resistance; Excellent thermal insulation effect: The inorganic fiber felt has a low thermal conductivity and can effectively isolate the heat and cold transfer from the outside world; Environmental protection and sustainability: The raw materials are all natural minerals, no harmful gas is released, and it meets the standards of green building materials.

[0035] For example, the melt spinning process has a melting temperature of 1200-1400°C, a blowing speed of 500-600rpm for blowing cooling, a drawing speed of 400-600m / min, a swinging frequency of 600-1000 times / min, a web-laying machine speed of 10-20m / min, and a needle punching density of 30-50 needles / cm 2 ;

[0036] Furthermore, the inorganic fiber felt formed by the above operation has an inorganic fiber diameter of 1-3 μm and a volume density of 80-110 kg / m 3 The thermal conductivity is 0.025W / m·K-0.035W / m·K, the thickness is 10-50mm, and the fire protection grade reaches A.

[0037] A composite thermal insulation decorative panel comprises a UHPC decorative panel 1, a thermal insulation layer 3 and a UHPC structural back panel 4, and also comprises a bonding mortar 2; the UHPC decorative panel 1 and the UHPC structural back panel 4 are respectively bonded and fixed to two sides of the thermal insulation layer 3 by the bonding mortar 2, so that the UHPC decorative panel 1, the thermal insulation layer 3 and the UHPC structural back panel 4 are integrally connected to form a composite thermal insulation decorative panel structure.

[0038] Furthermore, it also includes a plurality of back bolt connectors 6 arranged in an array on the UHPC structure back panel 4; the back bolt connector 6 passes through the side of the back bolt connector 6 that is bonded to the insulation layer 3 and faces away from the UHPC structure back panel 4 to the outside of the UHPC structure back panel 4; the back bolt connector 6 is integrally connected while the UHPC structure back panel 4 is formed, and the composite thermal insulation decorative panel can be directly connected to other objects through the back bolt connector 6, thereby simplifying the installation process.

[0039] Furthermore, it also includes a plurality of pull ropes 5; one end of the pull rope 5 is connected to the back bolt connector 6, and the other end of the pull rope 5 passes through the insulation layer 3 and is connected to the UHPC decorative panel 1; the pull rope 5 is provided to realize the pulling connection of the opposite surfaces of the UHPC decorative panel 1 and the UHPC structural backboard 4, so that the composite insulation decorative panel composed of the UHPC decorative panel 1, the insulation layer 3 and the UHPC structural backboard 4 has higher self-stability, and improves the overall impact resistance and deformation resistance.

[0040] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A composite thermal insulation decorative board, It is characterized in that It includes a UHPC decorative panel, a thermal insulation layer and a UHPC structural back panel which are bonded in sequence; The raw materials of the UHPC decorative panel and the UHPC structural backboard include cement, microspheres, silica fume, machine-made sand, slag powder, water, water reducing agent, steel fiber and basalt fiber.

2. The composite thermal insulation decorative board according to claim 1, Features: The raw material mix ratio of the UHPC decorative panels and UHPC structural back panels is designed to be 750kg / m3 of cement. 3 、Microbeads 100kg / m 3 、Silica fume 100kg / m 3 、Machinery sand 1100kg / m 3 , slag powder 150kg / m 3 , water 200kg / m 3 , water reducing agent 18kg / m 3 , Steel fiber 60kg / m 3 and basalt fiber 40kg / m 3 .

3. The composite thermal insulation decorative board according to claim 1, Features: It also includes bonding mortar; The UHPC decorative panel and the UHPC structural back panel are respectively bonded and fixed to both sides of the thermal insulation layer by the bonding mortar.

4. The composite thermal insulation decorative board according to claim 1, Features: The thermal insulation layer is inorganic fiber felt.

5. The composite thermal insulation decorative board according to claim 1, Features: Also included are a plurality of back bolt connectors arranged in an array on the back plate of the UHPC structure; The side of the back bolt connector facing away from the UHPC structure back plate and bonded to the thermal insulation layer passes through to the outside of the UHPC structure back plate.

6. The composite thermal insulation decorative board according to claim 5, Features: Also included are several draw cords; One end of the pull rope is connected to the back bolt connector, and the other end of the pull rope passes through the thermal insulation layer and is connected to the UHPC decorative panel.

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