Mould pressing inorganic modified graphite polystyrene composite insulation board and preparation method thereof

Abstract

The invention relates to a mould pressing inorganic modified graphite polystyrene composite insulation board and a preparation method thereof, and the mould pressing inorganic modified graphite polystyrene composite insulation board comprises an insulation layer which comprises an insulation base layer formed by inorganic slurry and graphite modified polystyrene particles; wherein in the thermal insulation base layer, graphite modified polystyrene particles are uniformly coated with inorganic slurry, the peripheries of the graphite modified polystyrene particles are mutually connected through the inorganic slurry, and the graphite modified polystyrene particles and the inorganic slurry form a honeycomb structure; the molded inorganic modified graphite polystyrene composite insulation board comprises the following components: 10-15 parts of graphite modified polystyrene particles; the inorganic slurry is prepared from 80 to 100 parts of cement; 10 to 20 parts of industrial waste residue; 50 to 60 parts of water; 3-5 parts of building rubber powder; and 2-3 parts of an additive.

Description

Technical Field

[0001] The present invention relates to the technical field of a molded inorganic modified graphite polystyrene composite thermal insulation board, and particularly to a molded inorganic modified graphite polystyrene composite thermal insulation board and a preparation method thereof. Background Art

[0002] The existing all-inorganic thermal insulation materials mainly consist of rock wool boards. However, rock wool is made by weaving and pressing cotton filaments, with poor waterproof performance and easy delamination and peeling. When directly used in exterior wall thermal insulation projects by means of sticking and anchoring, it is easy to cause the overall detachment of the thermal insulation layer. After the exterior wall seeps water, it is extremely easy to cause mildew and other phenomena. For this reason, many manufacturers add water repellents to rock wool products. Due to the chemical failure of the water repellent, the rock wool thermal insulation layer is more likely to crack, absorb water and fall off after a long time. Whether in the production process or the use process of the rock wool thermal insulation used for exterior wall insulation in the market, toxic, harmful and radioactive substances will be emitted, causing environmental pollution and harm to the human body. Moreover, the cutting of rock wool products during construction causes continuous and strong skin damage to construction workers, and the flying filaments and mineral powder caused by cutting products are extremely easy to be inhaled into the human respiratory tract, leading to a serious occupational disease - silicosis.

[0003] Inorganic and organic composite thermal insulation materials are composed by utilizing the fireproof performance of inorganic slurries and the good thermal insulation performance of organic thermal insulation materials. They are favored by customers due to their advantages such as light weight, good thermal insulation effect and excellent fireproof performance.

[0004] At present, the common composite thermal insulation materials on the market include thermosetting composite polystyrene thermal insulation boards. However, the production process of this product uses a vacuum suction cup penetration process. Since the pore size cannot be guaranteed during the forming of the substrate, there is uneven penetration during the penetration process, and the requirements for the fineness of the raw materials of the inorganic slurry are extremely harsh. As a result, the integrity of the produced thermosetting composite polystyrene thermal insulation board is poor, and its mechanical properties are unstable, which is subject to certain limitations in engineering applications.

[0005] It can be seen that the above-mentioned existing molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method obviously still have inconveniences and defects in terms of methods, manufacturing methods, processing methods and use, and thus need to be further improved urgently. In order to solve the problems existing in the molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method, relevant manufacturers have racked their brains to seek solutions. However, no applicable design has been developed for a long time, and there is no appropriate method, manufacturing method, processing method and structure for the general method, manufacturing method, processing method and the molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method to solve the above problems. This is obviously a problem that relevant industries are eager to solve.

[0006] In view of the defects existing in the existing molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method, the inventor, based on rich practical experience and professional knowledge in the design and manufacture of such products for many years, and in cooperation with the application of theory, actively carried out research and innovation in order to create a new molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method, which can improve the general existing molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method and make it more practical. After continuous research, design, repeated trial production and improvement, the present invention with practical value was finally created. Summary of the Invention

[0007] The main object of the present invention is to overcome the defects existing in the existing molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method, and to provide a new molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method. The technical problem to be solved is to make its thermal insulation effect excellent, fire resistance and mechanical properties good, and solve the technical problems of poor fire resistance of organic thermal insulation materials, poor thermal insulation performance of inorganic thermal insulation materials and poor mechanical properties of organic-inorganic composite thermal insulation materials in the prior art, so as to be more suitable for practical use and have industrial utilization value.

[0008] Another object of the present invention is to provide a preparation method of a molded inorganic modified graphite polystyrene composite thermal insulation board. The technical problem to be solved is to make its thermal insulation effect excellent, fire resistance and mechanical properties good, and solve the technical problems of poor fire resistance of organic thermal insulation materials, poor thermal insulation performance of inorganic thermal insulation materials and poor mechanical properties of organic-inorganic composite thermal insulation materials in the prior art, so as to be more suitable for practical use.

[0009] Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from the above technical solutions, in order to achieve the foregoing invention object, the main technical content of the present invention is as follows:

[0010] On the one hand, the present invention provides a molded inorganic modified graphite polystyrene composite thermal insulation board, including:

[0011] A thermal insulation layer, which includes a thermal insulation base layer formed by an inorganic slurry and graphite-modified polystyrene particles; wherein, in the thermal insulation base layer, the inorganic slurry uniformly coats the graphite-modified polystyrene particles, the graphite-modified polystyrene particles are connected to each other through the inorganic slurry around the particles, and the graphite-modified polystyrene particles and the inorganic slurry form a honeycomb structure;

[0012] The molded inorganic modified graphite polystyrene composite thermal insulation board includes: 10 - 15 parts of graphite modified polystyrene particles; the inorganic slurry includes: 80 - 100 parts of cement; industrial waste residue: 10 - 20 parts; water (ordinary tap water) 50 - 60 parts (water - binder ratio 0.45 - 0.55); 3 - 5 parts of building glue powder; 2 - 3 parts of admixture.

[0013] In an alternative embodiment, the inorganic slurry further includes 5 - 8 parts of silica fume or 3 - 5 parts of metakaolin.

[0014] In an alternative embodiment, the industrial waste residue includes a mixture of coal ash and slag, and the mixing mass ratio is 1:1 - 2.

[0015] In an alternative embodiment, the admixture includes polypropylene fiber or basalt fiber.

[0016] In an alternative embodiment, the polypropylene fiber is 0.5 - 1.0 part, and the basalt fiber is 0.3 - 0.8 part.

[0017] In an alternative embodiment, the thickness of the inorganic slurry in the thermal insulation layer is 2 mm - 3 mm.

[0018] In an alternative embodiment, the weight of the particles per unit volume of the graphite modified polystyrene particles is 10 - 15 kg / m³.

[0019] On the other hand, the embodiment of the present invention also provides a method for preparing a molded inorganic modified graphite polystyrene composite thermal insulation board, including:

[0020] S1: Mix and stir cement, industrial waste residue, water, building glue powder, and admixture according to their respective weight parts to form an inorganic slurry;

[0021] S2: Mix the graphite modified polystyrene particles with the inorganic slurry and then mold them;

[0022] S3: Naturally cure the formed thermal insulation board and then cut it to obtain the target thermal insulation board;

[0023] Wherein, the molded inorganic modified graphite polystyrene composite thermal insulation board includes: 10 - 15 parts of graphite modified polystyrene particles; 80 - 100 parts of cement; industrial waste residue: 10 - 20 parts; water (ordinary tap water) 50 - 60 parts (water - binder ratio 0.45 - 0.55); 3 - 5 parts of building glue powder; 2 - 3 parts of admixture.

[0024] In an alternative embodiment, in step S2, the molding process adopts a two - step pressure method: the initial pressure is 0.4 MPa - 0.7 MPa and is maintained for 30 s - 35 s, and the final pressure is 1.2 MPa - 1.5 MPa and is maintained for 60 s - 70 s.

[0025] As can be seen from the above, the present invention relates to a molded inorganic modified graphite polystyrene composite thermal insulation board and a preparation method thereof, including: a thermal insulation layer, which includes a thermal insulation base layer formed by an inorganic slurry and graphite-modified polystyrene particles; wherein, in the thermal insulation base layer, the inorganic slurry uniformly coats the graphite-modified polystyrene particles, and the graphite-modified polystyrene particles are connected to each other through the inorganic slurry around them, and the graphite-modified polystyrene particles and the inorganic slurry form a honeycomb structure; the molded inorganic modified graphite polystyrene composite thermal insulation board includes: 10-15 parts of graphite-modified polystyrene particles; the inorganic slurry includes: 80-100 parts of cement; 10-20 parts of industrial waste residue; 50-60 parts of water; 3-5 parts of building glue powder; 2-3 parts of admixture.

[0026] By means of the above technical solutions, the molded inorganic modified graphite polystyrene composite thermal insulation board and the preparation method thereof of the present invention at least have the following advantages:

[0027] The molded inorganic modified graphite polystyrene composite thermal insulation board provided by the embodiment of the present invention makes the structure of the thermal insulation board more solid by adopting a thermal insulation layer, improves the quality and load-bearing capacity of the thermal insulation board, and has higher practical value; by adopting a honeycomb structure formed by graphite-modified polystyrene particles and an inorganic slurry, the inorganic slurry coats the graphite-modified polystyrene particles to form an interlocking form, and by using cement, industrial waste residue and building glue powder of the above components in cooperation with the inorganic slurry and graphite-modified polystyrene particles, the compressive strength of the thermal insulation board is enhanced; the stability of the thermal insulation board is improved by an admixture.

[0028] The thermal insulation board provided by the embodiment of the present invention has excellent thermal insulation effect, good fire resistance and mechanical properties, and solves the technical problems of poor fire resistance of organic thermal insulation materials, poor thermal insulation performance of inorganic thermal insulation materials, and poor mechanical properties of organic-inorganic composite thermal insulation materials in the prior art.

[0029] In summary, the special molded inorganic modified graphite polystyrene composite thermal insulation board and the preparation method thereof of the present invention have excellent thermal insulation effect, good fire resistance and mechanical properties, and solve the technical problems of poor fire resistance of organic thermal insulation materials, poor thermal insulation performance of inorganic thermal insulation materials, and poor mechanical properties of organic-inorganic composite thermal insulation materials in the prior art. It has the above-mentioned many advantages and practical values, and there is no similar design publicly published or used in the same category (method, manufacturing method, processing method), and it is indeed innovative. It has great improvements both in terms of (method, manufacturing method, processing method) and function, has great progress in technology, and produces good and practical effects. Moreover, it has multiple enhanced effects compared with the existing molded inorganic modified graphite polystyrene composite thermal insulation board and the preparation method thereof, so it is more suitable for practical use and has wide industrial utilization value. It is truly a novel, progressive and practical new design.

[0030] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.

[0031] The specific (method, manufacturing method, processing method) and its structure of the present invention are given in detail by the following embodiments and their accompanying drawings. Brief Description of the Drawings

[0032] Figure 1 It is a schematic structural diagram of the thermal insulation board provided by the embodiment of the present invention.

[0033] Figure 2 It is a schematic flow chart of the preparation of the thermal insulation board provided by the embodiment of the present invention. Detailed Description of the Preferred Embodiment

[0034] In order to further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following combines the accompanying drawings and preferred embodiments to detail the specific implementation manners, methods, manufacturing methods, processing methods, steps, structures, features and their effects of the molded inorganic modified graphite polystyrene composite thermal insulation board and its preparation method according to the present invention.

[0035] The embodiment of the present invention provides a molded inorganic modified graphite polystyrene composite thermal insulation board, including: the thermal insulation layer includes a thermal insulation base layer formed by an inorganic slurry and graphite modified polystyrene particles; wherein, the inorganic slurry in the thermal insulation base layer uniformly coats the graphite modified polystyrene particles, the graphite modified polystyrene particles are connected to each other through the inorganic slurry around, and the graphite modified polystyrene particles and the inorganic slurry form a honeycomb structure.

[0036] The molded inorganic modified graphite polystyrene composite thermal insulation board includes: 10 - 15 parts of graphite modified polystyrene particles; the inorganic slurry includes: 80 - 100 parts of cement; 10 - 20 parts of industrial waste residue; 50 - 60 parts of water; 3 - 5 parts of building glue powder; 2 - 3 parts of admixture.

[0037] The molded inorganic modified graphite polystyrene composite thermal insulation board provided by the embodiment of the present invention has at least the following beneficial effects:

[0038] The molded inorganic modified graphite polystyrene composite thermal insulation board provided by the embodiment of the present invention makes the structure of the thermal insulation board more solid by adopting the thermal insulation layer, improves the quality and load-bearing capacity of the thermal insulation board, and has higher practical value; by adopting the honeycomb structure formed by graphite modified polystyrene particles and inorganic slurry, the inorganic slurry coats the graphite modified polystyrene particles to form an interlocking form, and by using the above components of cement, industrial waste residue and building glue powder in cooperation with the inorganic slurry and graphite modified polystyrene particles, the compressive strength of the thermal insulation board is enhanced; the stability of the thermal insulation board is improved by the admixture.

[0039] The insulation board provided by the embodiment of the present invention has excellent heat preservation effect, good fireproof performance and mechanical properties, and solves the technical problems of poor fireproof performance of organic insulation materials, poor heat preservation performance of inorganic insulation materials, and poor mechanical properties of organic-inorganic composite insulation materials in the prior art.

[0040] In an alternative embodiment, the embodiment of the present invention can pre-treat the graphite-modified polystyrene particles. The pre-treatment includes coating an inorganic flame retardant coating (such as a silica sol / nano-titanium dioxide composite coating) on the surface of the graphite-modified polystyrene particles, and the coating thickness is controlled within 50μm - 100μm, which can improve the interfacial bonding force and flame retardant performance of the insulation board. Exemplarily, the coating thickness can be 50μm, 60μm, 70μm, 80μm, 90μm or 100μm, etc.

[0041] The molded inorganic-modified graphite polystyrene composite insulation board may include: 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts of graphite-modified polystyrene particles; the inorganic slurry may include: 80 parts, 81 parts, 83 parts, 85 parts, 86 parts, 90 parts, 92 parts, 93 parts, 95 parts, 96 parts, 98 parts or 100 parts of cement; industrial waste residue: 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts or 20 parts; water (ordinary tap water) 50 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts or 60 parts, where the mass ratio of water to building glue powder can be 0.45 - 0.55. The building glue powder can be 3 parts, 4 parts or 5 parts; the admixture is 2 parts or 3 parts.

[0042] In an alternative embodiment, the embodiment of the present invention can pre-treat the graphite-modified polystyrene particles. Further, the pre-treatment includes coating an inorganic flame retardant coating (such as a silica sol / nano-titanium dioxide composite coating) on the surface of the particles (graphite-modified polystyrene particles), and the coating thickness can be controlled within 50μm - 100μm. By setting the flame retardant layer, the interfacial bonding force and flame retardant performance of the insulation board can be improved.

[0043] The embodiment of the present invention can also add 5 - 8 parts of silica fume or 3 - 5 parts of metakaolin, and the density of the slurry can be enhanced through the pozzolanic effect.

[0044] In an alternative embodiment, the inorganic slurry further includes 5 - 8 parts of silica fume or 3 - 5 parts of metakaolin. Exemplarily, the inorganic slurry includes 5 parts, 6 parts, 7 parts or 8 parts of silica fume, or 3 parts, 4 parts or 5 parts of metakaolin.

[0045] In an alternative embodiment, the industrial waste residue includes a mixture of coal ash and slag, and the mixing mass ratio is 1:1 - 2. Exemplarily, the mixing mass ratio of coal ash and slag can be 1:1 or 1:2.

[0046] In an alternative embodiment, the admixture includes: polypropylene fiber or basalt fiber. In an alternative embodiment, the polypropylene fiber is 0.5 - 1.0 parts, and the basalt fiber is 0.3 - 0.8 parts. Exemplarily, the mass parts of the polypropylene fiber can be 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts or 1.0 parts, and the mass parts of the basalt fiber can be 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts or 0.8 parts.

[0047] By adding the admixture of polypropylene fiber or basalt fiber in the embodiments of the present invention, shrinkage cracks of the insulation board can be inhibited; and the freeze-thaw cycle stability can be improved.

[0048] In an alternative embodiment, the thickness of the inorganic slurry in the thermal insulation layer is 2 mm - 3 mm. Exemplarily, the thickness of the inorganic slurry in the thermal insulation layer can be 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm or 3 mm.

[0049] In an alternative embodiment, the weight of the graphite-modified polystyrene particles per unit volume is 10 - 15 kg / m³.

[0050] As Figure 2 shown, on the other hand, a method for preparing a molded inorganic modified graphite polystyrene composite thermal insulation board is also provided, including:

[0051] S1: Mix and stir cement, industrial waste residue, water, building glue powder, and admixture according to their respective weight parts to form an inorganic slurry.

[0052] S2: Mix the graphite-modified polystyrene particles with the inorganic slurry and then press them into shape.

[0053] S3: Naturally cure the formed thermal insulation board and then cut it to obtain the target thermal insulation board.

[0054] Among them, the molded inorganic modified graphite polystyrene composite thermal insulation board includes: 10 - 15 parts of graphite-modified polystyrene particles; 80 - 100 parts of cement; 10 - 20 parts of industrial waste residue; 50 - 60 parts of water (ordinary tap water) (water-binder ratio 0.45 - 0.55); 3 - 5 parts of building glue powder; 2 - 3 parts of admixture.

[0055] In an alternative embodiment, in step S2, a two-step pressing method is adopted during the pressing process: the initial pressure is 0.4 MPa - 0.7 MPa and is maintained for 30 s - 35 s, and the final pressure is 1.2 MPa - 1.5 MPa and is maintained for 60 s - 70 s.

[0056] Example 1

[0057] As Figure 1 shown, the molded inorganic modified graphite polystyrene composite thermal insulation board provided by the embodiment of the present invention includes an inorganic slurry 1 and graphite modified polystyrene particles 2. The inorganic slurry 1 uniformly coats a number of graphite modified polystyrene particles 2. The graphite modified polystyrene particles 2 are connected to each other through the inorganic binder 1 around them, forming an organizational structure in the shape of molecular connection. The graphite modified polystyrene particles 2 and the inorganic slurry 1 form a honeycomb structure.

[0058] Through performance test comparison, the performance test of the thermal insulation board provided by the embodiment of the present invention is as follows:

[0059] 1. Compressive strength: Through the close packing of graded particles (2 - 8 mm), the compressive strength of the honeycomb structure of the thermal insulation board can reach 1.5 - 2.0 MPa (the traditional EPS board ≤ 0.2 MPa).

[0060] 2. Flexural stiffness: The three - point bending test shows that the bending stiffness coefficient CD of the honeycomb structure of the thermal insulation board ≥ 0.85 (the structure fixed by ordinary adhesives is only 0.6 - 0.7).

[0061] 3. Fire - resistance performance: The surface inorganic slurry layer (2 mm - 3 mm) combined with graphite modified polystyrene particles meets the Class A fire - resistance standard.

[0062] The above - mentioned is only the preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not used to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can make some changes or modifications by using the above - disclosed methods and technical contents into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above - mentioned embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A molded inorganic modified graphite polystyrene composite thermal insulation board, characterized in that, Including: A thermal insulation layer, the thermal insulation layer includes a thermal insulation base layer formed by an inorganic slurry and graphite-modified polystyrene particles; wherein, in the thermal insulation base layer, the inorganic slurry uniformly coats the graphite-modified polystyrene particles, and the graphite-modified polystyrene particles are connected to each other through the inorganic slurry around their peripheries, and the graphite-modified polystyrene particles and the inorganic slurry form a honeycomb structure; The molded inorganic modified graphite polystyrene composite thermal insulation board includes: 10 - 15 parts of graphite-modified polystyrene particles; the inorganic slurry includes: 80 - 100 parts of cement; industrial waste residue: 10 - 20 parts; 50 - 60 parts of water; 3 - 5 parts of building glue powder; 2 - 3 parts of admixture.

2. The molded inorganic modified graphite polystyrene composite thermal insulation board according to claim 1, characterized in that The inorganic slurry further includes 5 - 8 parts of silica fume or 3 - 5 parts of metakaolin.

3. The molded inorganic modified graphite polystyrene composite thermal insulation board according to claim 1, characterized in that, The industrial waste residue includes: a mixture of coal ash and slag, and the mixing mass ratio is 1:1 - 2.

4. The molded inorganic modified graphite polystyrene composite thermal insulation board according to claim 1, characterized in that, The admixture includes: polypropylene fiber or basalt fiber.

5. The molded inorganic modified graphite polystyrene composite thermal insulation board according to claim 4, characterized in that, The polypropylene fiber is 0.5 - 1.0 part, and the basalt fiber is 0.3 - 0.8 part.

6. The molded inorganic modified graphite polystyrene composite thermal insulation board according to claim 1, wherein The thickness of the inorganic slurry in the thermal insulation layer is 2 mm - 3 mm.

7. The molded inorganic modified graphite polystyrene composite thermal insulation board according to claim 1, characterized in that, The weight of the particles per unit volume of the graphite-modified polystyrene particles is 10 - 15 kg / m³.

8. A preparation method of a molded inorganic modified graphite polystyrene composite thermal insulation board, characterized in that, Including: S1: Mix and stir cement, industrial waste residue, water, building glue powder, and admixture according to their respective weight parts to form an inorganic slurry; S2: Mix the graphite-modified polystyrene particles with the inorganic slurry and then mold them; S3: Naturally cure the formed thermal insulation board and then cut it to obtain the target thermal insulation board; Wherein, the molded inorganic modified graphite polystyrene composite thermal insulation board includes: 10 - 15 parts of graphite-modified polystyrene particles; 80 - 100 parts of cement; industrial waste residue: 10 - 20 parts; 50 - 60 parts of water (ordinary tap water) (water-binder ratio 0.45 - 0.55); 3 - 5 parts of building glue powder; 2 - 3 parts of admixture.

9. The preparation method of the molded inorganic modified graphite polystyrene composite thermal insulation board according to claim 8, characterized in that, In step S2, the molding process adopts a two-step pressing method: the initial pressure is 0.4 MPa - 0.7 MPa and is maintained for 30 s - 35 s, and the final pressure is 1.2 MPa - 1.5 MPa and is maintained for 60 s - 70 s.

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