Composite stone panel, method of manufacturing and mounting structure thereof

Abstract

The application relates to a composite stone plate and a preparation method and mounting structure thereof, in particular to the field of stone curtain walls, the composite stone plate comprising a base plate and a stone panel, the base plate and the stone panel being bonded through an adhesive layer, the base plate adopting a color-coated composite steel plate or a composite multi-dimensional steel plate, and the adhesive layer adopting an elastic adhesive layer; the preparation method comprises the following steps: cutting the stone plate and the base plate, configuring epoxy resin soft glue, gluing, plate pasting, cutting and polishing; the mounting structure comprises an angle steel for being fixed on a wall body and an adapter for connecting the angle steel and the composite stone plate, the adapter comprising an angle code fixedly connected with the angle steel and an adapter code piece bolted with the base plate of the composite stone plate, and a clamping part with an opening downward being arranged on the upper side of the adapter code piece, and the side wall upper part of the angle code being clamped in the clamping part. The composite stone plate has the effects of not being easy to break and being convenient to install, and when the mounting structure is adopted, the composite stone plate is fast, convenient and practical to install.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of stone curtain wall, more particularly, it relates to a composite stone plate and a preparation method and mounting structure thereof. BACKGROUND

[0002] Natural stone is widely used in high-grade outer wall and inner wall decoration as stone curtain wall due to its beautiful color and stable performance. However, natural stone has the defects of limited resources and large quality, which is inconvenient for transportation. Therefore, the composite stone plate which can overcome these defects is gradually popularized in the market.

[0003] The Chinese utility model patent document with publication number CN201818003U discloses a composite stone plate, which is composed of a substrate layer, a stone layer and a glue layer for bonding the substrate layer and the stone layer. The substrate layer is also made of natural stone, and a glass fiber mesh is arranged in the glue layer. The glass fiber mesh is a net structure formed by glass fiber filaments.

[0004] According to the related technology, the inventors believe that although the weight of the stone curtain wall is reduced to some extent, the substrate layer is also made of natural stone, which has the defects of easy breakage and inconvenience for installation. SUMMARY

[0005] In order to improve the inconvenience for installation caused by the easy breakage of the composite stone plate in the related technology, the present application provides a composite stone plate, a preparation method and a mounting structure thereof.

[0006] In the first aspect, the present application provides a composite stone plate, which adopts the following technical solution:

[0007] The composite stone plate comprises a substrate and a stone panel, and the substrate and the stone panel are bonded by an adhesive layer. The substrate is a color-coated composite steel plate or a composite multi-dimensional steel plate, and the adhesive layer is an elastic adhesive layer.

[0008] By using the color-coated composite steel plate and the composite multi-dimensional steel plate, the strength, light weight and rigidity of the composite stone plate are improved, and part of the natural stone is replaced. The composite stone plate has the surface effect of natural stone and the superior performance of composite metal plate. The elastic adhesive layer can compensate for the defects of insufficient weather resistance and easy cracking of the composite stone plate caused by the difference in thermal expansion coefficient between the substrate and the stone panel, so that the service life of the composite stone plate is prolonged and the composite stone plate can be used for a long time.

[0009] Optionally, the elastic adhesive layer is formed by curing an epoxy resin soft glue, the epoxy resin soft glue is composed of component A and component B mixed in a weight ratio of 1:1, wherein, in terms of weight parts, component A includes bisphenol A type liquid epoxy resin 35-50 parts, toughening agent 10-15 parts and filler 20-40 parts, component B includes curing agent 10-15 parts and accelerator 3-4 parts.

[0010] By adopting the above technical scheme, the bisphenol A type liquid epoxy resin and the toughening agent are used as the main adhesive components of the epoxy resin soft glue, which not only has high adhesive strength, but also has high elasticity after curing, can maintain the integrity of the form under the action of the large stress caused by the different expansion deformation degrees of the natural stone and the composite metal, and maintain good adhesive strength; the use of the curing agent and the accelerator helps to improve the curing speed and the adhesive strength of the epoxy resin soft glue.

[0011] Optionally, the component A further includes 1-2 parts of a penetrating agent.

[0012] By adopting the above technical scheme, the penetrating agent is used to reduce the surface tension of the natural stone and the composite metal, improve the penetration degree of the bisphenol A type liquid epoxy resin, and further strengthen the adhesive connection with the natural stone and the composite metal, thereby improving the adhesive strength. The amount of the penetrating agent can be 1 part, 1.5 parts or 2 parts in terms of weight parts. Too little amount is difficult to produce effective effect, and too much amount not only has weak effect on improving the penetration effect, but also reduces the adhesive strength.

[0013] Optionally, the penetrating agent is composed of 2%-5% triethanolamine hydrochloride, 1%-3% fatty alcohol polyoxyethylene ether, 1.2%-1.5% 1,3-bis-hydroxymethyl urea, 1%-2% hydrobromic acid and the balance of water.

[0014] By adopting the above technical scheme, the triethanolamine hydrochloride, the fatty alcohol polyoxyethylene ether and the 1,3-bis-hydroxymethyl urea jointly act on the surface of the natural stone and the metal composite plate, sufficiently reduce the surface tension, and enable the substrate and the elastic adhesive layer and the stone panel to be strongly bonded.

[0015] Optionally, the component B further includes 1-2 parts of a coupling agent.

[0016] By adopting the above technical scheme, the coupling agent is used to enable the bisphenol A type liquid epoxy resin to be chemically combined with the natural stone and the metal composite plate, thereby further improving the adhesive strength.

[0017] In a second aspect, the application provides a preparation method of the composite stone plate, which adopts the following technical scheme:

[0018] A preparation method of a composite stone plate, comprising the following steps:

[0019] Step one, cutting a stone plate and a base plate, the thickness of the stone plate is greater than 2 times the thickness of the stone panel; and the A component material and the B component raw material are weighed according to the proportion, mixed uniformly respectively, and then blended according to the weight ratio of 1:1 to obtain an epoxy resin soft glue;

[0020] Step two, brushing the epoxy resin soft glue on both sides of the stone plate, attaching the base plate, and fixing under pressure; after the epoxy resin soft glue is cured, cutting along the center line of the side wall of the stone plate, and polishing the cutting surface to form two composite stone plates.

[0021] By adopting the above technical scheme, the overall preparation method is simple, fast, and can reduce the damage of the stone plate during preparation, which helps to improve the yield of the composite stone plate.

[0022] In a third aspect, the application provides a mounting structure of the composite stone plate, which adopts the following technical scheme: a mounting structure of a composite stone plate, comprising an angle steel for fixing on a wall body and an adapter for connecting the angle steel and the composite stone plate, the adapter comprising an angle code fixedly connected with the angle steel and an adapter code piece bolted with the base plate of the composite stone plate, the adapter code piece being provided with a clamping portion with an opening downward on the upper side, and the angle code being clamped in the clamping portion on the upper part of the side wall.

[0023] By adopting the above technical scheme, when the composite stone plate is mounted, the angle steel is first arranged on the wall surface to be mounted, then the angle code is fixed on the angle steel, the adapter code piece is bolted on the base plate of the composite stone plate, and finally the composite stone plate is hung on the angle code through the adapter code piece to complete the installation of the composite stone plate. By adopting the cooperation of the angle steel, the angle code and the adapter code piece, the adapter code piece can be pre-connected with the composite stone plate, so that the on-site installation process is simplified, the installation operation time of the installer is reduced, and the adapter code piece is convenient and practical.

[0024] Optionally, an adjusting bolt is threadedly connected to the top wall of the clamping portion, the rotating axis of the adjusting bolt is parallel to the longitudinal direction of the clamping portion, and when the upper part of the angle code is clamped in the clamping portion, one end of the adjusting bolt penetrating into the inner cavity of the clamping portion abuts against the top of the angle code.

[0025] By adopting the above technical scheme, the setting of the adjusting bolt helps to reduce the precision requirement during the installation of the adapter code piece and improves the installation efficiency.

[0026] Optionally, the elastic gaskets are arranged on the opposite inner side walls of the clamping portion and the bottom side wall of the adapter chip, and the elastic gaskets on the inner side walls of the clamping portion are oppositely arranged.

[0027] By adopting the above technical scheme, the adapter chip is elastically hung on the corner code, which helps to improve the impact resistance of the composite stone plate.

[0028] In summary, the present application has the following beneficial effects:

[0029] 1. The use of color-coated composite steel plate and composite multi-dimensional steel plate to replace part of natural stone makes the composite stone plate have the surface effect of natural stone and the superior performance of composite metal plate; and the use of elastic adhesive layer can effectively compensate for the defects of insufficient weather resistance and easy cracking of the composite stone plate caused by the difference in thermal expansion coefficient between the base plate and the stone panel, thereby prolonging the service life of the composite stone plate and enabling long-term use.

[0030] 2. In the present application, the penetrant is used to reduce the surface tension of natural stone and composite metal and improve the penetration degree of bisphenol A type liquid epoxy resin, thereby strengthening the bonding relationship with natural stone and composite metal and improving the bonding strength.

[0031] 3. The mounting structure of the present application uses angle steel, corner code and adapter chip in cooperation, the adapter chip and the composite stone plate can be pre-connected, which simplifies the on-site installation process, reduces the installation operation time of the installation personnel, and is convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic diagram of the mounting structure of the composite stone plate in Embodiment 1 of the present application.

[0033] Reference signs: 1, composite stone plate; 11, base plate; 12, stone panel; 13, elastic adhesive layer; 2, angle steel; 21, expansion bolt; 3, corner code; 31, stainless steel bolt; 4, adapter chip; 41, connecting portion; 411, stainless steel anchor bolt; 42, clamping portion; 43, elastic gasket; 5, wall. DETAILED DESCRIPTION

[0034] The present application will be further described in detail below in combination with the drawings and embodiments.

[0035] Embodiment 1

[0036] The composite stone plate 1 disclosed in the embodiments of the present application is described with reference to Figure 1The composite stone plate 1 comprises a base plate 11 and a stone panel 12, and the base plate 11 and the stone panel 12 are bonded by an elastic adhesive layer 13. The base plate 11 is a composite metal plate, and in the embodiment, the base plate 11 is specifically selected as a color-coated composite steel plate, and in other embodiments, a composite multi-dimensional steel plate or other composite metal material plate can also be used. The elastic adhesive layer 13 in the embodiment is an epoxy resin soft glue layer formed by curing an epoxy resin soft glue, and in other embodiments, a self-adhesive silica gel adhesive layer formed by curing a self-adhesive silica gel can also be used, and any adhesive layer formed by an adhesive material with a certain elasticity can be used. The thickness of the composite stone plate 1 can be adjusted and determined according to different purposes and design requirements. When used as an external curtain wall, the thickness is generally 5-8 mm, and when used for indoor decoration, the thickness is generally 4-6 mm. Of course, other suitable thicknesses can also be selected. In the embodiment, the thickness of the stone panel 12 on the composite stone plate 1 is 3 mm, and the thickness of the base plate 11 is 5 mm.

[0037] The preparation process of the composite stone plate 1 comprises the following steps:

[0038] Step one, cutting the stone plate and the base plate 11, the thickness of the stone plate is greater than twice the thickness of the stone panel 12; and the epoxy resin soft glue is weighed according to the proportion;

[0039] Step two, brushing the epoxy resin soft glue on both sides of the stone plate, and attaching the base plate 11, and pressing and fixing, after the epoxy resin soft glue is cured, cutting along the center line of the side wall of the stone plate, and polishing the cutting surface, to form two composite stone plates 1.

[0040] In addition, the embodiment also discloses a mounting structure of the composite stone plate 1. Figure 1 , comprising an angle steel 2 fixed horizontally on the wall body 5 by an expansion bolt 21 and an adapter for connecting the angle steel 2 and the composite stone plate 1, the adapter comprising an angle code 3 fixedly connected with the angle steel 2 and an adapter code sheet 4 bolted with the base plate 11 of the composite stone plate 1.

[0041] The angle code 3 is an L-shaped angle code 3, one side wall of the angle code 3 is arranged on the horizontal side wall of the angle steel 2 and is fixedly connected with the horizontal side wall of the angle steel 2 by a stainless steel bolt 31, and the other side wall of the angle code 3 is vertically arranged on the side of the angle steel 2 away from the wall body 5, and the free end of the vertical side wall is located at the upper part of the angle code 3.

[0042] The adapter chip 4 includes an arc-shaped connecting part 41 and a door-shaped clamping part 42 connected to the upper side of the connecting part 41. The middle part of the connecting part 41 is anchored to the base plate 11 of the composite stone plate 1 by a stainless steel anchor 411 and tightly adheres to the outer wall of the base plate 11. The clamping part 42 is open downward and is hung on the free end of the vertical side wall of the corner code 3. In order to reduce the positioning difficulty when the adapter chip 4 is installed on the composite metal plate, an adjusting bolt is threadedly connected to the top wall of the clamping part 42, the rotating axis of the adjusting bolt is parallel to the longitudinal direction of the clamping part 42, and when the upper part of the vertical side wall of the corner code 3 is clamped in the inner cavity of the clamping part 42, the end of the adjusting bolt penetrating into the inner cavity of the clamping part 42 abuts against the top of the vertical side wall of the corner code 3. Thus, the installation height of the composite stone plate 1 with inaccurate installation position of the adapter chip 4 can be adjusted by adjusting the position of the adjusting bolt, that is, the adapter chip 4 does not need to be accurately positioned when it is installed on the composite stone plate 1, which helps to improve the installation efficiency.

[0043] In addition, a clamping groove is formed on the two opposite inner side walls of the clamping part 42 and the lower side wall of the connecting part 41, and a rubber elastic gasket 43 is bonded in the clamping groove. The two elastic gaskets 43 on the inner side walls of the clamping part 42 are oppositely arranged, and the elastic gasket 43 near the side of the clamping part 42 close to the composite stone plate 1 is vertically and oppositely arranged with the elastic gasket 43 installed on the lower side of the connecting part 41. Thus, when the top of the vertical side wall of the corner code 3 is inserted into the inner cavity of the clamping part 42, the side walls of the adapter chip 4 and the vertical side wall of the corner code 3 are elastically abutted by the elastic gaskets 43, which helps to improve the impact resistance of the composite stone plate 1.

[0044] When the composite stone plate 1 of the embodiment is installed by using the above installation structure, the installation principle is as follows: during installation, first, the angle steel 2 is arranged on the wall surface to be installed, then the corner code 3 is fixed on the angle steel 2, the adapter chip 4 is bolted on the base plate 11 of the composite stone plate 1, and finally the composite stone plate 1 is hung on the corner code 3 through the adapter chip 4, thereby completing the installation of the composite stone plate 1.

[0045] Embodiment 2-4

[0046] The composite stone plate 1 is different from the embodiment 1 in that the epoxy resin soft glue for forming the elastic adhesive layer 13 is composed of A component and B component in a weight ratio of 1:1, and the types and proportions of raw materials of the A component and the B component are shown in Table 1. The various raw materials involved in Table 1 are all ordinary commercially available products.

[0047] Table 1 Types and proportions of raw materials of epoxy resin soft glue in embodiment 2-4

[0048]

[0049] The preparation steps of the composite stone plate 1 are different from those of Example 1 only in that when the epoxy resin soft glue is weighed, the A component material and the B component material are weighed according to the proportion, mixed uniformly respectively, and then blended according to the weight ratio of 1:1 to obtain the epoxy resin soft glue.

[0050] Example 5

[0051] A composite stone plate 1, which is different from Example 3 in that the A component further comprises 2 parts of a penetrating agent, and the penetrating agent is a saturated hydrobromic acid solution.

[0052] Examples 6-12

[0053] A composite stone plate 1, which is different from Example 5 in that the penetrating agent is composed of triethanolamine hydrochloride, fatty alcohol polyoxyethylene ether, 1,3-bis-hydroxymethyl urea, hydrobromic acid, and the balance of water according to the weight percentage shown in Table 2.

[0054] Table 2 Main components of the penetrating agent and their weight percentages in Examples 6-12

[0055]

[0056] In Example 9, the penetrating agent is based on the penetrating agent of Example 7, and the fatty alcohol polyoxyethylene ether in the raw material is replaced by triethanolamine hydrochloride and 1,3-bis-hydroxymethyl urea in equal weight;

[0057] In Example 10, the penetrating agent is based on the penetrating agent of Example 7, and the 1,3-bis-hydroxymethyl urea in the raw material is replaced by triethanolamine hydrochloride and fatty alcohol polyoxyethylene ether in equal weight;

[0058] In Example 11, the penetrating agent is based on the penetrating agent of Example 7, and the triethanolamine hydrochloride in the raw material is replaced by 1,3-bis-hydroxymethyl urea and fatty alcohol polyoxyethylene ether in equal weight.

[0059] In Example 12, the penetrating agent is based on the penetrating agent of Example 7, and the hydrobromic acid in the raw material is cancelled.

[0060] Example 13

[0061] A composite stone plate 1, which is different from Example 7 in that the B component further comprises 1.5 parts by weight of a coupling agent, and the coupling agent in this embodiment is KH550 coupling agent.

[0062] Performance detection test

[0063] The composite stone plate 1 prepared in Examples 1-13 was used as a sample, and the tensile bonding strength and compressive shear bonding strength were detected according to the method described in 7.4 of the Adhesive for Veneer Stone GB 24264-2009, and the tensile bonding strength and compressive shear bonding strength of the sample after freeze-thaw cycle were detected according to the freeze-thaw cycle method described in 7.4.1.4, and the test results are shown in Table 3.

[0064] In each group of tests, 10 samples were tested, the average of the 10 samples was calculated, and the data beyond ±20% of the average was discarded. If there were still five or more data retained, a new average was calculated as the test result. If there were less than five, the test was repeated.

[0065] Table 3 Strength Test Results (MPa)

[0066]

[0067] As can be seen from Examples 1-4 and Table 3, the composite stone plate 1 using the soft epoxy resin glue containing bisphenol A type liquid epoxy resin and toughening agent configured by the present application has higher tensile bonding strength and compressive shear bonding strength than the composite stone plate 1 using the ordinary commercially available soft epoxy resin glue, and the bonding strength decreases less after the freeze-thaw cycle simulating actual use, which shows that the bisphenol A type liquid epoxy resin and the toughening agent used as the main adhesive component of the soft epoxy resin glue not only have high bonding strength, but also have high elasticity after curing, which can maintain the shape integrity and good bonding strength under the action of the large stress caused by the different expansion and deformation degrees of the natural stone and the composite metal.

[0068] As can be seen from Examples 3, 5 and Table 3, the addition of the penetrating agent has a beneficial effect on further improving the bonding strength, because the penetrating agent can reduce the surface tension of the natural stone and the composite metal, improve the penetration of the bisphenol A type liquid epoxy resin, and thus strengthen the bonding connection with the natural stone and the composite metal, and improve the bonding strength and the ability to resist the freeze-thaw effect.

[0069] As can be seen from Examples 5, 6-12 and Table 3, the composition of the penetrating agent has a significant effect on the bonding strength of the soft epoxy resin glue. The penetrating agent composed of triethanolamine hydrochloride, fatty alcohol polyoxyethylene ether and 1,3-bis-hydroxymethyl urea and hydrobromic acid in a specific ratio in the present application has a better effect, which can more fully act on the surface of the natural stone and the metal composite plate, reduce the surface tension, and enable the substrate 11 and the elastic bonding layer to be strongly bonded, and the elastic bonding layer and the stone panel 12 to be strongly bonded. Moreover, by comparing the strength reduction caused by the freeze-thaw test, it is found that it also has a better effect on maintaining the bonding strength.

[0070] It can be seen from Example 7, Example 13 and Table 3 that the incorporation of a coupling agent in the B component also helps to further improve the bonding strength.

[0071] The specific embodiments are only illustrative of the application and are not intended to limit the scope of the application. Any modifications without creative contribution made by one skilled in the art after reading the specification can be made to the embodiments within the scope of the claims of the application and are protected by the patent law.

Claims

1. A composite stone panel comprising a substrate (11) and a stone panel (12) bonded by an adhesive layer between the substrate (11) and the stone panel (12), characterized in that, The substrate (11) is a color-coated composite steel plate or a composite multi-dimensional steel plate, and the adhesive layer is an elastic adhesive layer (13); The elastic adhesive layer (13) is formed by curing an epoxy resin soft glue, and the epoxy resin soft glue is composed of A component and B component mixed at a weight ratio of 1:1, wherein the A component includes bisphenol A type liquid epoxy resin 35-50 parts, toughening agent 10-15 parts and filler 20-40 parts by weight, and the B component includes curing agent 10-15 parts and accelerator 3-4 parts; The A component further includes 1-2 parts of a penetrating agent. The penetrating agent is composed of triethanolamine hydrochloride 2%-5% by weight, fatty alcohol polyoxyethylene ether 1%-3%, 1,3-bis-hydroxymethyl urea 1.2%-1.5%, hydrobromic acid 1%-2% and the balance of water.

2. The composite stone panel according to claim 1, characterized in that: The B component further includes 1-2 parts of a coupling agent.

3. The method for the production of a composite stone panel according to claim 1 or 2, characterized in that: The method comprises the following steps: Step one, cutting the stone plate and the substrate (11), the thickness of the stone plate is greater than 2 times the thickness of the stone panel (12); and the A component and the B component are weighed according to the proportion, mixed uniformly respectively, and then blended at a weight ratio of 1:1 to obtain an epoxy resin soft glue; Step two, brushing the epoxy resin soft glue on both sides of the stone plate, attaching the substrate (11), pressing and fixing, waiting for the epoxy resin soft glue to cure, cutting along the center line of the stone plate side wall, and polishing the cutting surface to form two composite stone plates (1).

4. The mounting structure of the composite stone panel according to claim 1 or 2, characterized by: The adapter includes an angle code (3) fixedly connected with the angle steel (2) and an adapter code sheet (4) bolted with the substrate (11) of the composite stone plate (1), and the adapter code sheet (4) is provided with a clamping portion (42) with an opening downward on the upper side.

5. The mounting structure according to claim 4, characterized by: The clamping portion (42) is provided with an adjusting bolt threaded on the top wall, the rotation axis of the adjusting bolt is parallel to the longitudinal direction of the clamping portion (42), and when the angle code (3) is clamped in the clamping portion (42), one end of the adjusting bolt penetrating into the inner cavity of the clamping portion (42) abuts against the top of the angle code (3).

6. The mounting structure according to claim 5, characterized by: The clamping portion (42) is provided with an elastic gasket (43) on the two opposite inner side walls and the bottom side wall of the adapter code sheet (4), and the elastic gaskets (43) on the inner side walls of the clamping portion (42) are oppositely arranged.

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