Novel composite thermal insulation wallboard and preparation method thereof

Abstract

The invention discloses a novel composite thermal insulation wallboard and a preparation method, and belongs to the technical field of thermal insulation wallboards, the novel composite thermal insulation wallboard comprises a wallboard main body and an inner skeleton structure arranged in the wallboard main body, and the inner skeleton structure comprises a plurality of outer frames arranged from top to bottom; and a plurality of transverse fiber bundles which are transversely arranged are uniformly bound and fixed on the outer frame. According to the application, the thermal insulation blocks of the thermal insulation material are fixed at the cross points of the transverse fiber bundles and the straight fiber bundles to form a three-dimensional thermal insulation fiber net, so that particles can be effectively prevented from floating upwards when gypsum cement is poured into a template in the process of preparing the thermal insulation wallboard, and the toughness, the tensile strength, the crack resistance and the fracture resistance of the wallboard are enhanced; the gypsum cement material has the reinforcing effect of the three-dimensional fiber heat preservation net, so that the problem that the gypsum cement material shrinks due to rapid water loss and cracks with particles is solved, in addition, the longitudinal steel bars are added, the compressive strength of the wall body is greatly improved, and the bearing capacity is remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of thermal insulation wall panels, and more specifically, to a novel composite thermal insulation wall panel and a preparation method thereof. Background Art

[0002] In recent years, with the development of our country, energy-saving and environmentally friendly buildings have become a new trend in the construction industry. Environmentally friendly composite insulation wall panels have developed rapidly. Among them, discarded polystyrene foam boards have become a popular application of wall insulation materials due to their green recycling potential and excellent insulation performance. At present, they are mostly used as insulation interlayers on the outside of the wall in the market.

[0003] The prior art directly mixes polystyrene particles (EPS) into gypsum cement to produce thermal insulation wall panels. When the gypsum cement mixed with polystyrene particles is poured and the mold is gently vibrated using a vibrator or a vibration table, the bonding strength between the gypsum matrix and the lightweight hydrophobic EPS particles is weak, and the EPS particles are prone to float during the vibration process, resulting in reduced strength of the thermal insulation wall panels and easy cracking, which brings difficulties to actual engineering applications and also poses a major safety hazard.

[0004] In view of this, we propose a new type of composite thermal insulation wall panel and a preparation method. Summary of the invention

[0005] Technical problem to be solved: The purpose of this application is to provide a new type of composite insulation wall panel and a preparation method to solve the technical problems raised in the above background technology.

[0006] Technical solution: The technical solution of the present application provides a new type of composite thermal insulation wall panel, including a wall panel main body and an internal skeleton structure arranged inside the wall panel main body, the internal skeleton structure including a plurality of outer frames arranged from top to bottom, a plurality of transverse fiber bundles arranged in a transverse direction are evenly tied and fixed on the outer frames, and a plurality of vertical fiber bundles arranged perpendicular to the transverse fiber bundles are also evenly tied and fixed on the outer frames; insulation blocks are provided at the intersections of the transverse fiber bundles and the vertical fiber bundles, and a longitudinal fiber bundle is also connected between the intersections of two adjacent transverse fiber bundles and the vertical fiber bundles; the four corners inside the plurality of outer frames are commonly connected with longitudinal steel bars.

[0007] As an optional solution of the technical solution of this application document, the longitudinal reinforcement is HRB400.

[0008] As an optional solution of the technical solution of this application document, the insulation block is made of polystyrene resin material.

[0009] As an optional solution of the technical solution of this application document, the outer diameters of the transverse fiber bundles, the straight fiber bundles and the longitudinal fiber bundles are all 1 mm, and the spacing between two adjacent transverse fiber bundles and the spacing between two adjacent straight fiber bundles on the outer frame are both 2 cm.

[0010] As an optional solution to the technical solution of the present application document, the transverse fiber bundles, the vertical fiber bundles and the longitudinal fiber bundles are all jute fiber ropes.

[0011] As an optional solution of the technical solution of this application document, pads are connected to the top ends of the longitudinal steel bars.

[0012] As an optional solution of the technical solution of this application document, the cushion block is also made of polystyrene resin material.

[0013] As an optional solution of the technical solution of this application document, eight pads are respectively located at eight corners inside the wall panel body.

[0014] As an optional solution of the technical solution of this application document, the raw material components of the wallboard body are according to the following weight parts, including: 500-600 parts of gypsum, 500-600 parts of cement, 7-8 parts of hemp fiber, 500 parts of water, 4-5 parts of retarder, and 25-30 parts of polystyrene resin particles.

[0015] The technical solution of the present application provides a method for preparing a novel composite thermal insulation wall panel, comprising the following steps:

[0016] S1. Build a template of corresponding size according to the size of the wallboard to be prepared, and apply a layer of release agent on the inner surface of the template;

[0017] S2. Place the inner skeleton structure into the constructed template;

[0018] S3, pouring gypsum cement into the formwork;

[0019] S4. After the wall panels solidify, demould the formwork. After demoulding, place the prepared thermal insulation wall panels under natural conditions for curing, and leave gaps between the wall panels to prevent direct contact.

[0020] Beneficial effects: One or more technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: 1. The present application fixes the insulation block of the insulation material at the cross intersection of the transverse fiber bundle and the straight fiber bundle to form a three-dimensional insulation fiber mesh, so that when pouring gypsum cement into the template during the preparation of the insulation wallboard, the particles can be effectively prevented from floating up, thereby enhancing the toughness, tensile resistance, crack resistance and flexural resistance of the wallboard. With the reinforcement effect of the three-dimensional fiber insulation mesh, the gypsum cement material improves the shrinkage caused by rapid water loss, thereby causing cracking between particles. In addition, the addition of longitudinal steel bars greatly improves the compressive strength of the wall and significantly increases the load-bearing capacity.

[0021] 2. The present invention improves the tensile and splitting resistance of the thermal insulation wall through the transverse fiber bundles and the straight fiber bundles in the internal skeleton structure, prevents the gypsum from cracking, and at the same time, can inhibit the floating of the thermal insulation block when pouring gypsum cement into the mold.

[0022] 3. The insulation blocks are fixed on the inner skeleton structure by means of transverse fiber bundles, vertical fiber bundles and longitudinal fiber bundles, and the insulation blocks are embedded in all the intersection nodes of the inner skeleton structure to form a three-dimensional fiber insulation net, which fixes the position of the insulation blocks and is conducive to improving the insulation effect of the insulation wall.

[0023] 4. The internal skeleton structure arranged inside the wall panel body can effectively improve the mechanical properties of the thermal insulation wall such as compression and bending resistance.

[0024] 5. In order to avoid the thermal bridge effect at the four corners of the wall due to the longitudinal steel bars, pads are installed at both ends of the longitudinal steel bars. Through the insulation blocks evenly distributed inside the wall panel body and the pads arranged at the eight corners inside the wall panel body, the insulation material is evenly distributed inside the wall panel body, so that the wall panel can effectively avoid the occurrence of thermal bridge effect when in use.

[0025] 6. Since the raw material components of the wallboard body in the present invention are in the following weight parts, including: 500-600 parts of gypsum, 500-600 parts of cement, 7-8 parts of hemp fiber, 500 parts of water, 4-5 parts of retarder, and 25-30 parts of polystyrene resin particles, during the configuration of gypsum cement, the present invention adds polystyrene resin particles (insulation particles) with a smaller particle size than the insulation blocks on the inner skeleton structure, thereby improving the utilization rate of the insulation material, reducing the dead weight, and further improving the insulation performance, fire resistance and sound insulation performance of the insulation wall.

[0026] 7. The material mix ratio of the wallboard body determined by the present invention controls the slurry viscosity, making it difficult for particles to move and float in the slurry, and controls the coagulation time, allowing the particles to solidify quickly before floating. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of this application.

[0028] Figure 2 It is a structural schematic diagram of the internal skeleton structure in this application.

[0029] Figure 3 It is a schematic diagram of the partial structure of the internal skeleton structure in this application.

[0030] Figure 4 For this application Figure 3 A partial enlarged schematic diagram of part A.

[0031] Explanation of the numbers in the figure: 1. Wall panel body; 2. External frame; 3. Insulation block; 4. Transverse fiber bundle; 5. Vertical fiber bundle; 6. Pad block; 7. Longitudinal steel bar; 8. Longitudinal fiber bundle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application. The present application is further described in detail below in combination with the drawings in the specification.

[0033] Reference Figures 1 to 4The embodiment of the present application provides a novel composite thermal insulation wall panel, comprising a wall panel body 1 and an internal skeleton structure arranged inside the wall panel body 1, the internal skeleton structure comprising a plurality of outer frames 2 arranged from top to bottom, a plurality of transverse fiber bundles 4 arranged in a transverse manner are evenly tied and fixed on the outer frames 2, and a plurality of vertical fiber bundles 5 arranged perpendicular to the transverse fiber bundles 4 are also evenly tied and fixed on the outer frames 2; insulation blocks 3 are provided at the intersections of the transverse fiber bundles 4 and the vertical fiber bundles 5, the insulation blocks 3 inside the two upper and lower adjacent outer frames 2 can also be arranged alternately, and a longitudinal fiber bundle 8 is also connected between the intersections of the two upper and lower adjacent transverse fiber bundles 4 and the vertical fiber bundles 5; the four corners inside the plurality of outer frames 2 are commonly connected with longitudinal steel bars 7. The longitudinal steel bars 7 are preferably HRB400. The insulation blocks 3 are preferably made of polystyrene resin material. The outer diameter of the transverse fiber bundle 4, the vertical fiber bundle 5 and the longitudinal fiber bundle 8 is preferably 1 mm, and the spacing between two adjacent transverse fiber bundles 4 and the spacing between two adjacent vertical fiber bundles 5 on the outer frame 2 is preferably 2 cm. The transverse fiber bundle 4, the vertical fiber bundle 5 and the longitudinal fiber bundle 8 are preferably jute fiber ropes. In the present application, the insulation block 3 of the thermal insulation material is fixed at the cross intersection of the transverse fiber bundle 4 and the vertical fiber bundle 5 to form a three-dimensional thermal insulation fiber net, so that when pouring gypsum cement into the template during the preparation of the thermal insulation wallboard, the particles can be effectively prevented from floating up, and the toughness, tensile resistance, crack resistance and flexural resistance of the wallboard can be enhanced. With the reinforcement of the three-dimensional fiber insulation net, the gypsum cement material improves the shrinkage caused by rapid water loss, thereby cracking between particles. In addition, the longitudinal steel bars 7 are added to greatly improve the compressive strength of the wall and significantly increase the load-bearing capacity. The present invention improves the tensile and splitting resistance of the thermal insulation wall through the transverse fiber bundles 4 and the straight fiber bundles 5 in the internal skeleton structure, prevents the gypsum from cracking, and can inhibit the floating of the thermal insulation block 3 when pouring the gypsum cement into the mold. The thermal insulation block 3 is fixed on the internal skeleton structure by the transverse fiber bundles 4, the straight fiber bundles 5 and the longitudinal fiber bundles 8, and the thermal insulation block 3 is embedded in all the intersection nodes of the internal skeleton structure to form a three-dimensional fiber thermal insulation net, which fixes the position of the thermal insulation block 3 and is conducive to improving the thermal insulation effect of the thermal insulation wall. The internal skeleton structure set inside the wall panel body 1 can effectively improve the mechanical properties of the thermal insulation wall such as compression and flexural resistance.

[0034] The raw material components of the wallboard body 1 are in the following weight parts, including: 500-600 parts of gypsum, 500-600 parts of cement, 7-8 parts of hemp fiber, 500 parts of water, 4-5 parts of retarder, and 25-30 parts of polystyrene resin particles. Since the raw material components of the wallboard body 1 in the present invention are in the following weight parts, including: 500-600 parts of gypsum, 500-600 parts of cement, 7-8 parts of hemp fiber, 500 parts of water, 4-5 parts of retarder, and 25-30 parts of polystyrene resin particles, therefore, in the process of configuring the gypsum cement, the present invention adds polystyrene resin particles (insulation particles) with a smaller particle size than the insulation blocks 3 on the inner skeleton structure, thereby improving the utilization rate of the insulation material, reducing the dead weight, and further improving the insulation performance, fire resistance and sound insulation performance of the insulation wall. The material mix ratio of the wallboard body 1 determined by the present invention controls the slurry viscosity, making it difficult for particles to move and float in the slurry, and controls the coagulation time, allowing the particles to solidify quickly before floating.

[0035] Reference Figure 1 and Figure 2 , the embodiment of the present application provides a new type of composite thermal insulation wall panel, and pads 6 are connected to the top of the longitudinal steel bars 7. The pads 6 are preferably made of polystyrene resin material. Eight pads 6 are respectively located at the eight corners inside the wall panel body 1. In order to avoid the thermal bridge effect caused by the longitudinal steel bars 7 at the four corners of the wall, pads 6 are installed at both ends of the longitudinal steel bars 7. Through the insulation blocks 3 evenly distributed inside the wall panel body 1 and the pads 6 arranged at the eight corner positions inside the wall panel body 1, the insulation material is evenly distributed inside the wall panel body 1, so that the wall panel can effectively avoid the occurrence of thermal bridge effect when in use.

[0036] The present application provides a method for preparing a novel composite thermal insulation wallboard, comprising the following steps:

[0037] S1. Build a template of corresponding size according to the size of the wallboard to be prepared, and apply a layer of release agent on the inner surface of the template;

[0038] S2. Place the inner skeleton structure into the constructed template;

[0039] S3, pouring gypsum cement into the formwork;

[0040] S4. After the wall panels solidify, demould the formwork. After demoulding, place the prepared thermal insulation wall panels under natural conditions for curing, and leave gaps between the wall panels to prevent direct contact.

[0041] When preparing the gypsum cement slurry required for the wallboard body 1, the gypsum and cement materials should be screened through a 0.9mm sieve. When weighing the materials, the weighing accuracy is based on mass. Weighing accuracy: polystyrene resin particles: ±0.5%; water, gypsum, cement: ±0.5%; hemp: ±0.5%. Before stirring, the stirrer, mixing bucket and other tools should be wetted and cleaned.

[0042] Weigh out the amount of cement, gypsum, retarder, and hemp fiber according to the pre-mixing ratio, add P.O42.5 cement, gypsum, and retarder to the mixer in turn, and stir for 1 minute. After sufficient pre-mixing, slowly add water and stir evenly at low speed for 3 minutes. When the slurry consistency is poor, sprinkle the crushed hemp fiber into the mixer evenly in 3 times and continue to stir until the hemp fiber is evenly distributed in the slurry. Simple mechanical stirring is not easy to stir the bottom and corners of the container evenly. Therefore, during the stirring period, the bottom and corners of the container must be stirred evenly by manual stirring, and finally mechanical stirring is performed for 1-2 minutes; when the slurry has a certain consistency (if the slurry consistency is not enough, the insulation particles will float quickly and cause uneven distribution), pour the insulation particles into it and continue to stir until the insulation particles and fibers are evenly distributed in the slurry, and then quickly pour the slurry into the mold for molding.

[0043] Apply a layer of mineral grease on the inner surface of the test mold, place the inner skeleton structure in the mold, and then pour the stirred slurry into the test mold three times, adding 1 / 3 of the slurry each time, and use a vibrating rod to vibrate around the mold for 1-2 minutes to fully vibrate and compact the slurry, and repeat three times. Use a spatula to wipe off the excess material on the edge of the trough, and then use a trowel to smooth the test piece, let it stand naturally in the room for 20 minutes to solidify and form, and finally mark the date and number on the formed test mold.

[0044] Before demoulding, the raw materials of the blank remaining around the mold should be cleaned up; be careful when demoulding to prevent damage to the specimen; after demoulding, place the specimen under natural conditions for curing, and note that there should be gaps between each specimen and they cannot be in direct contact.

Claims

1. A new type of composite thermal insulation wall panel, characterized by: The invention comprises a wall panel body (1) and an internal skeleton structure arranged inside the wall panel body (1), wherein the internal skeleton structure comprises a plurality of external frames (2) arranged from top to bottom, a plurality of transverse fiber bundles (4) arranged in a transverse direction are evenly tied and fixed on the external frames (2), and a plurality of vertical fiber bundles (5) arranged perpendicular to the transverse fiber bundles (4) are also evenly tied and fixed on the external frames (2); Heat preservation blocks (3) are provided at the intersections of the transverse fiber bundles (4) and the straight fiber bundles (5), and the heat preservation blocks (3) in the first single layer are arranged alternately with the heat preservation blocks (3) in the second double layer. A longitudinal fiber bundle (8) is also connected between the intersections of two transverse fiber bundles (4) and the straight fiber bundles (5) that are adjacent to each other in the first single layer, and a longitudinal fiber bundle (8) is also connected between the intersections of two transverse fiber bundles (4) and the straight fiber bundles (5) that are adjacent to each other in the second double layer. The four corners inside the plurality of outer frames (2) are commonly connected with longitudinal steel bars (7).

2. The novel composite thermal insulation wallboard according to claim 1 is characterized in that: The longitudinal steel bar (7) is HRB400; The number of the outer frames (2) is at least 3.

3. The novel composite thermal insulation wallboard according to claim 1 is characterized in that: The heat-insulating block (3) is made of polystyrene resin material.

4. The novel composite thermal insulation wallboard according to claim 1 is characterized in that: The outer diameters of the transverse fiber bundles (4), the straight fiber bundles (5) and the longitudinal fiber bundles (8) are all 1 mm, and the spacing between two adjacent transverse fiber bundles (4) and the spacing between two adjacent straight fiber bundles (5) on the outer frame (2) are both 2 cm.

5. The novel composite thermal insulation wallboard according to claim 1 is characterized in that: The transverse fiber bundle (4), the vertical fiber bundle (5) and the longitudinal fiber bundle (8) are all jute fiber ropes.

6. The novel composite thermal insulation wallboard according to claim 1 is characterized in that: The top ends of the longitudinal steel bars (7) are all connected with cushion blocks (6).

7. The novel composite thermal insulation wallboard according to claim 6 is characterized in that: The cushion block (6) is also made of polystyrene resin material.

8. The novel composite thermal insulation wallboard according to claim 6 is characterized in that: The eight cushion blocks (6) are respectively located at eight corners inside the wall panel body (1).

9. The novel composite thermal insulation wallboard according to claim 1 is characterized in that: The raw material components of the wallboard body (1) include, in parts by weight, 500-600 parts of gypsum, 500-600 parts of cement, 7-8 parts of hemp fiber, 500 parts of water, 4-5 parts of retarder, and 25-30 parts of polystyrene resin particles.

10. A method for preparing a novel composite thermal insulation wallboard according to any one of claim 9, characterized in that: The following steps are involved: S1. Build a template of corresponding size according to the size of the wallboard to be prepared, and apply a layer of release agent on the inner surface of the template; S2. Place the inner skeleton structure into the constructed template; S3, pouring gypsum cement into the formwork; S4. After the wall panels solidify, demould the formwork. After demoulding, place the prepared thermal insulation wall panels under natural conditions for curing, and leave gaps between the wall panels to prevent direct contact.

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