Multi-layer composite rock wool insulation board and processing technology thereof

Abstract

The invention provides a multi-layer composite rock wool insulation board and a processing technology thereof, and belongs to the technical field of rock wool insulation boards. The processing technology of the multi-layer composite rock wool board comprises the following steps: S1, raw material preparation and pretreatment; s2, rock wool preparation; s3, cutting the rock wool; s4, composite molding and curing; s5, trimming and cutting; and S6, quality inspection. The overall steps are compact, the working procedures are simple, the use quality of the multi-layer composite rock wool insulation board can be effectively improved, and the use requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of rock wool thermal insulation board processing, and in particular to a multi-layer composite rock wool thermal insulation board and a processing technology thereof. Background Art

[0002] Multi-layer composite rock wool insulation board is a high-performance insulation material. It uses rock wool as the core material and is compounded with other materials. It has many excellent properties and is widely used in many fields such as construction, ships, and industrial equipment. Multi-layer composite rock wool insulation board has an extremely low thermal conductivity, which can effectively reduce the transfer and loss of heat energy and improve the insulation effect of buildings. It can keep warm in winter and save heating costs; it can insulate in summer and improve the comfort of buildings. Multi-layer composite rock wool insulation board is widely used in thermal insulation projects such as building exterior walls, roofs, and floors, as well as indoor partitions, ceilings and other decorative projects. Its excellent thermal insulation and fire resistance make buildings safer and more comfortable.

[0003] The production process of multi-layer composite rock wool insulation board is relatively complicated, especially the slurry treatment and mesh cloth laying, which require strict control of various steps and parameter data, and attention to related issues to ensure product quality and performance, otherwise it will lead to insufficient quality of subsequent use of multi-layer composite rock wool insulation board. Therefore, this application provides a multi-layer composite rock wool insulation board and its processing technology to meet the needs. Summary of the invention

[0004] The present invention provides a multi-layer composite rock wool insulation board and a processing technology thereof, so as to solve the problems that the production process of the existing multi-layer composite rock wool insulation board is relatively complicated and the subsequent use quality of the multi-layer composite rock wool insulation board is insufficient.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A processing technology for a multi-layer composite rock wool insulation board comprises the following steps: S1. Raw material preparation and pretreatment: selecting natural basalt ore and chemical fiber materials asbestos and slag wool as raw materials for rock wool core materials, selecting cement mortar cloth as composite materials, crushing and screening the raw materials for rock wool core materials, and washing, drying and cutting the composite materials; S2, rock wool preparation, placing the rock wool core material raw material into a high-temperature furnace, preparing a uniform glass melt by melting and molding, spraying and fiberizing the glass melt by rotary spraying or centrifugal spraying, and curing the fiberized rock wool to obtain a rock wool board; S3. Rock wool cutting: Use a rock wool cutting machine to cut the rock wool board into strips. The width of the rock wool strips is determined according to the required thickness of the rock wool composite board. If the rock wool fibers are horizontal, flip the cut strips to make them vertical. S4, composite molding and curing, spraying polyurethane foaming agent on the surface of the vertical wire rock wool board and the surface of the cement mortar cloth, compounding the vertical wire rock wool board sprayed with polyurethane foaming agent and the cement mortar cloth, and then sending them into the double crawler laminating machine for foaming molding and curing treatment; S5, trimming and cutting, trimming both sides of the plate to remove excess edge material and burrs, and then cutting into the required size and shape according to needs; S6. Quality inspection: conduct quality inspection on the processed multi-layer composite rock wool insulation board.

[0006] Optionally, in step S2, the temperature of the high-temperature furnace is 1300-1500°C; the fiberization temperature is 1000-1200°C; and the curing temperature of the curing treatment is 200-300°C.

[0007] Optionally, the fiberizing in step S2 comprises the following steps: The molten glass melt is ejected from the furnace and turned into fine fibers by the centrifugal force of high-speed rotation. It is then cooled by air or water mist to become rock wool cells with a diameter of 5-30 microns.

[0008] Optionally, in step S4, before composite molding and curing, the following steps are also included: Spread a layer of mortar with a thickness of 5-7mm on both sides of the vertical wire rock wool board; Lay a layer of mesh cloth on the surface of the mortar on both sides; A layer of mortar with a thickness of 8-10 mm is spread on the mesh cloth on both sides, and the rock wool board with mortar and mesh cloth is sent to the drying equipment for drying.

[0009] Furthermore, recycled fine aggregate reinforcement material strengthened by Bacillus cohnii is added into the mortar.

[0010] Further, slurry laying includes the following steps: Base treatment: Ensure that the surface of the base is clean and flat, remove the loose and weathered parts, and perform leveling treatment; Preparation of binder: Mix the binder powder with water according to the proportion, and stir thoroughly with a stirrer until it is evenly mixed and has a moderate consistency. The stirred binder should be used up within the specified time to avoid performance degradation due to overuse; Paving: Apply a layer of adhesive evenly on the surface of the base, control the thickness within a certain range, and scrape the adhesive flat to ensure a close bond with the base.

[0011] Furthermore, the amount of adhesive required for each square meter of rock wool board is 3-5 kg. Before the adhesive is completely dry, the mesh cloth is laid flatly on the adhesive to ensure that there are no wrinkles or omissions.

[0012] Furthermore, the overlapping width of the mesh cloth is greater than or equal to 100 mm, the mesh cloth should be laid continuously at the corners, and the wrapping width of the mesh cloth is greater than or equal to 200 mm.

[0013] Another aspect of the present invention is a multi-layer composite rock wool insulation board, which is prepared by the processing technology of the multi-layer composite rock wool insulation board.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: The processing technology of multi-layer composite rock wool insulation board includes multiple steps such as raw material preparation and pretreatment, rock wool preparation, rock wool cutting, composite molding and curing, trimming cutting, and quality inspection. The rock wool core material is crushed and screened to ensure the particle size and uniformity of the raw materials so that they meet the use requirements. The composite material is cleaned, dried and cut to meet the use requirements. In the preparation process, the width of the rock wool strip is determined according to the required thickness of the rock wool composite board. The rock wool filaments are horizontal. After the strips are cut and flipped, the rock wool filaments become vertical, which greatly increases the tensile strength of the rock wool composite board. The vertical filament rock wool sprayed with polyurethane foaming agent is compounded with cement mortar cloth and then sent to the double-track laminator for foaming molding. In the molding process, the flatness and thickness uniformity of the board can be effectively improved. The overall steps are compact and the process is simple, which can effectively improve the use quality of the multi-layer composite rock wool insulation board and meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0016] Figure 1 It is a schematic diagram of the processing process of the multi-layer composite rock wool insulation board of the present invention; Figure 2 This is a schematic diagram of the rock wool preparation process; Figure 3 This is a schematic diagram of rock wool fiberization; Figure 4 This is a schematic diagram of the rock wool board grid and grouting; Figure 5 Schematic diagram of the grouting process.

[0017] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0018] The following is a detailed description of a multi-layer composite rock wool insulation board and its processing technology provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0019] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0020] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0021] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0022] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0023] like Figure 1 and Figure 2As shown, a processing technology of a multi-layer composite rock wool insulation board of the present invention comprises the following steps: S1. Raw material preparation and pretreatment: select high-quality natural basalt ore and chemical fiber materials asbestos and slag wool as rock wool core material raw materials, select cement mortar cloth as composite material, crush and screen the rock wool core material raw materials to ensure the particle size and uniformity of the raw materials to meet the use requirements, and then wash, dry and cut the composite materials to meet the use requirements; S2, rock wool preparation, placing the rock wool core material raw material into a high-temperature furnace, preparing a uniform glass melt by melting and molding, spraying and fiberizing the glass melt by rotary spraying or centrifugal spraying, and curing the fiberized rock wool to obtain a rock wool board; S3. Rock wool cutting: Use a rock wool cutting machine to cut the rock wool board into strips. The width of the rock wool strips is determined according to the required thickness of the rock wool composite board. If the rock wool fibers are horizontal, turn the cut strips to make them vertical, which greatly increases the tensile strength of the rock wool board. S4, composite molding and curing, spray polyurethane foaming agent on the surface of the vertical wire rock wool board and the surface of the cement mortar cloth to increase the thermal insulation performance and bonding strength of the board, composite the vertical wire rock wool board sprayed with polyurethane foaming agent and the cement mortar cloth, and then send it to the double crawler laminator for foaming molding and curing treatment. During the molding process, the flatness and thickness uniformity of the board should be ensured; S5, trimming and cutting, trimming both sides of the plate to remove excess edge material and burrs, and then cutting into the required size and shape according to needs; S6. Quality inspection: conduct quality inspection on the processed multi-layer composite rock wool insulation board, including tests on thermal insulation performance, fire resistance, waterproof performance, and compressive strength.

[0024] In step S2, the temperature of the high-temperature furnace needs to be strictly controlled to ensure the quality stability and consistency of the rock wool. Specifically, the temperature of the high-temperature furnace is 1300-1500°C; After the raw materials are melted, the molten material needs to be sprayed out and fiberized by rotary spraying or centrifugal spraying, and the fiberization temperature is 1000-1200℃; The fiberized rock wool needs to be cured to increase its stability and strength. The curing temperature is 200-300℃.

[0025] During the curing process, special additives are added, specifically environmentally friendly glue and wetting agents, to improve the performance of the rock wool product.

[0026] See also Figure 3 , Figure 3The figure is a schematic diagram of rock wool fiberization. The fiberization includes the following steps: the molten glass melt is ejected from the furnace, and the high-speed centrifugal force turns it into fine fibers, which are cooled by air or water mist to become rock wool cells with a diameter of 5 to 30 microns.

[0027] The prepared rock wool cells are processed according to different specifications and uses, such as compression into boards, curling, cutting and other steps; according to needs, the rock wool board is flipped over to change the rock wool fibers from horizontal to vertical to increase the tensile strength.

[0028] See also Figure 4 In step S4, before composite molding and curing, the following steps are also included: A layer of mortar with a thickness of 5-7mm is laid on the surfaces of both sides of the vertical wire rock wool board. Recycled fine aggregate reinforcement materials strengthened by Bacillus cohnii can be added to the mortar to improve the bonding strength and durability of the mortar; a layer of mesh cloth is laid on the surface of the mortar on both sides to enhance the overall strength and crack resistance of the rock wool board; another layer of mortar with a thickness of 8-10mm is laid on the mesh cloth on both sides, and the rock wool board with mortar and mesh cloth is sent to the drying equipment for drying to ensure that the mortar is completely cured.

[0029] See also Figure 5 , grouting includes the following steps: Base treatment: Ensure that the surface of the base is clean and flat, free of oil, dust and other impurities. Loose and weathered parts should be removed and necessary leveling should be performed; Preparation of binder: Mix the binder powder with water according to the proportion, and stir thoroughly with a stirrer until it is evenly mixed and has a moderate consistency. The stirred binder should be used up within the specified time to avoid performance degradation due to overuse; Slurry laying: Apply a layer of adhesive evenly on the surface of the base layer, control the thickness within a certain range, and use tools such as a toothed scraper to scrape the adhesive flat to ensure a close bond with the base layer.

[0030] The amount of adhesive required for each square meter of rock wool insulation board is 3-5kg. Before the adhesive is completely dry, lay the mesh cloth flatly on the adhesive to ensure that there are no wrinkles or omissions.

[0031] The overlap length of the mesh cloth should meet the requirements. The overlap width of the standard mesh cloth should be greater than or equal to 100mm. The mesh cloth should be laid continuously at the corners, and the overlap width of the mesh cloth should be greater than or equal to 200mm.

[0032] Mesh cloth mass per unit area: reach or exceed 130 g / m2.

[0033] Preferably, the cutting in step S5 is performed in a direction parallel to the side of the rock wool board that has not been treated, so that the other four surfaces of the rock wool board are all treated surfaces, thereby ensuring the use quality of the rock wool board.

[0034] After quality inspection, the thermal insulation performance, fire resistance, waterproof performance and compressive strength of the multi-layer composite rock wool insulation board prepared by this processing technology are higher than the national standard requirements. The elongation at break in the warp and weft directions are less than 5%, and the alkali-resistant breaking strength in the warp and weft directions are greater than 750N / 50mm.

[0035] The present invention also provides a multi-layer composite rock wool insulation board, which is prepared by the processing technology of the multi-layer composite rock wool insulation board.

[0036] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A processing technology for a multi-layer composite rock wool insulation board, characterized in that: The following steps are involved: S1. Raw material preparation and pretreatment: selecting natural basalt ore and chemical fiber materials asbestos and slag wool as raw materials for rock wool core materials, selecting cement mortar cloth as composite materials, crushing and screening the raw materials for rock wool core materials, and washing, drying and cutting the composite materials; S2, rock wool preparation, placing the rock wool core material raw material into a high-temperature furnace, preparing a uniform glass melt by melting and molding, spraying and fiberizing the glass melt by rotary spraying or centrifugal spraying, and curing the fiberized rock wool to obtain a rock wool board; S3. Rock wool cutting: Use a rock wool cutting machine to cut the rock wool board into strips. The width of the rock wool strips is determined according to the required thickness of the rock wool composite board. If the rock wool fibers are horizontal, flip the cut strips to make them vertical. S4, composite molding and curing, spraying polyurethane foaming agent on the surface of the vertical wire rock wool board and the surface of the cement mortar cloth, compounding the vertical wire rock wool board sprayed with polyurethane foaming agent and the cement mortar cloth, and then sending them into the double crawler laminating machine for foaming molding and curing treatment; S5, trimming and cutting, trimming both sides of the plate to remove excess edge material and burrs, and then cutting into the required size and shape according to needs; S6. Quality inspection: conduct quality inspection on the processed multi-layer composite rock wool insulation board.

2. The processing technology of the multi-layer composite rock wool insulation board according to claim 1 is characterized in that: In step S2, the temperature of the high temperature furnace is 1300-1500°C; the fiberization temperature is 1000-1200°C; and the curing temperature of the curing treatment is 200-300°C.

3. The processing technology of the multi-layer composite rock wool insulation board according to claim 1 is characterized in that: The fibrillation in step S2 includes the following steps: The molten glass melt is ejected from the furnace and turned into fine fibers by the centrifugal force of high-speed rotation. It is then cooled by air or water mist to become rock wool cells with a diameter of 5-30 microns.

4. The processing technology of the multi-layer composite rock wool insulation board according to claim 1 is characterized in that: In step S4, before composite molding and curing, the following steps are also included: Spread a layer of mortar with a thickness of 5-7mm on both sides of the vertical wire rock wool board; Lay a layer of mesh cloth on the surface of the mortar on both sides; A layer of mortar with a thickness of 8-10 mm is spread on the mesh cloth on both sides, and the rock wool board with mortar and mesh cloth is sent to the drying equipment for drying.

5. The processing technology of the multi-layer composite rock wool insulation board according to claim 4 is characterized in that: Recycled fine aggregate reinforcement material strengthened with Bacillus cohnii in mortar.

6. The processing technology of the multi-layer composite rock wool insulation board according to claim 4 is characterized in that: The grouting process includes the following steps: Base treatment: Ensure that the surface of the base is clean and flat, remove the loose and weathered parts, and perform leveling treatment; Preparation of binder: Mix the binder powder with water according to the proportion, and stir it thoroughly with a stirrer until it is evenly mixed and has a moderate consistency. The stirred binder should be used up within the specified time; Laying slurry: Apply a layer of adhesive evenly on the surface of the base, control the thickness within a certain range, and scrape the adhesive flat.

7. The processing technology of the multi-layer composite rock wool insulation board according to claim 6 is characterized in that: The amount of adhesive required for each square meter of rock wool board is 3-5kg. Before the adhesive is completely dry, lay the mesh cloth evenly on the adhesive.

8. The processing technology of the multi-layer composite rock wool insulation board according to claim 7 is characterized in that: The overlapping width of the mesh cloth shall be ≥100mm, the mesh cloth shall be laid continuously at the corners, and the wrapping width of the mesh cloth shall be ≥200mm.

9. A multi-layer composite rock wool insulation board, characterized in that: The multi-layer composite rock wool insulation board is prepared by the processing technology of any one of claims 1 to 8.

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