A flame retardant composite thermal insulation non-disassembly external template and preparation method thereof

Abstract

The invention discloses a flame-retardant composite thermal insulation disassembly-free outer template and a preparation method thereof, belonging to the technical field of thermal insulation materials. The flame-retardant composite thermal insulation outer template comprises a vacuum thermal insulation interlayer, a flame-retardant thermal insulation protective layer and an inorganic protective layer. The flame-retardant thermal insulation protective layer is made of the following raw materials: 28-33 parts of silicate cement; 10-13 parts of fly ash; 5-7 parts of vitrified microspheres; 7-10 parts of hollow glass microspheres; 24-35 parts of pre-foamed polystyrene particles; 8-11 parts of flame retardant; 8-12 parts of silica aerogel; 1-3 parts of foamed microspheres; 2-5 parts of latex powder; 1-2 parts of cellulose ether; 35-45 parts of water; and the flame retardant is made of the following raw materials: 1-2 parts of magnesium hydroxide, 1-2 parts of aluminum hydroxide, 0.4-0.7 parts of red phosphorus, 1-2 parts of melamine, 1-2 parts of pentaerythritol and 2-3 parts of ammonium polyphosphate. The outer template provided by the invention has high strength, does not deform or crack during use, has low thermal conductivity and good flame retardant effect.

Description

Technical Field

[0001] The invention relates to a flame-retardant composite thermal insulation non-disassembly outer template and a preparation method thereof, belonging to the technical field of thermal insulation materials. Background Art

[0002] As the outer surface of a building, the exterior wall must withstand the influence of heat, cold, rain, wind, fire and other external environments. Reasonable selection of thermal insulation and fireproof materials for the exterior wall can protect the main body of the building, improve the durability of the main structure, and improve the thermal stability of the indoor environment to meet the requirements of building energy conservation. Therefore, how to improve the fireproof performance while meeting the requirements of building insulation has always been the focus of research.

[0003] The non-disassembly insulation formwork is a new type of integrated insulation structure technology. It has the advantages of meeting the insulation effect required for building energy conservation, being cast synchronously with the building structure, and eliminating the need for formwork removal. It has greatly improved construction efficiency and reduced construction costs. Therefore, it has been widely used in recent years. Specifically, the non-disassembly insulation formwork is made by wrapping the insulation board inside the protective layer. The insulation board and the protective layer cooperate with each other to make the non-disassembly insulation formwork reach the required strength and fireproof and insulation performance.

[0004] At present, the insulation boards used for exterior wall insulation are mainly divided into organic insulation boards and inorganic insulation boards. Among them, organic insulation boards such as foamed polystyrene boards, extruded polystyrene boards, and rigid polyurethane boards have relatively good thermal insulation properties and low specific gravity, but poor stability, poor flame retardancy, poor aging resistance, and easy deformation. As the use time increases, organic insulation boards are prone to cracking and falling off. Most inorganic insulation boards use inorganic materials as the main raw materials. After adding admixtures and water to make slurry, they are solidified and formed. They have good fire resistance and will not be damaged by high temperature. Therefore, inorganic insulation materials are increasingly used in buildings, but the thermal insulation properties of inorganic insulation boards are worse than those of organic insulation boards, and they have a higher specific gravity.

[0005] The present invention aims to provide a novel composite thermal insulation non-disassembly exterior formwork to solve the above problems.

[0006] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention

[0007] The purpose of the present invention is to solve the problems existing in the prior art and provide a flame retardant composite thermal insulation non-disassembly outer template with high strength, low specific gravity, no deformation or cracking during use, low thermal conductivity and good flame retardant effect.

[0008] The present invention achieves the above-mentioned purpose by adopting the following technical solutions:

[0009] The flame-retardant composite thermal insulation non-disassembly outer template provided by the present invention comprises a vacuum thermal insulation interlayer and a flame-retardant thermal insulation protective layer and an inorganic protective layer wrapped on the outside of the vacuum thermal insulation interlayer, wherein the flame-retardant thermal insulation protective layer and the inorganic protective layer are formed by pouring and curing;

[0010] The flame retardant thermal insulation protective layer slurry is made of the following raw materials in parts by weight: 28-33 parts of silicate cement, 10-13 parts of fly ash, 5-7 parts of vitrified microspheres, 7-10 parts of hollow glass microspheres, 24-35 parts of pre-foamed polystyrene particles, 8-11 parts of flame retardant, 8-12 parts of silica aerogel, 1-3 parts of foamed microspheres, 2-5 parts of latex powder, 1-2 parts of cellulose ether, and 35-45 parts of water;

[0011] The flame retardant is made of the following raw materials in parts by weight: 1-2 parts of magnesium hydroxide, 1-2 parts of aluminum hydroxide, 0.4-0.7 parts of red phosphorus, 1-2 parts of melamine, 1-2 parts of pentaerythritol, and 2-3 parts of ammonium polyphosphate.

[0012] Optionally, the vacuum insulation interlayer is formed by splicing a plurality of square vacuum insulation panels, each vacuum insulation panel includes two gas barrier protective layers and a plurality of insulation core material units vacuum-encapsulated between the two gas barrier protective layers, each insulation core material unit is arranged in m rows and n columns, and the two gas barrier protective layers around each insulation core material unit are sealed together by hot melt pressing.

[0013] Optionally, the size of each thermal insulation core material unit is (10-40 cm)×(10-60 cm)×(1.5-4 cm).

[0014] Optionally, the vacuum insulation interlayer is sandwiched between two steel wire meshes, and the two steel wire meshes are connected by a connector at the edges of two vacuum insulation panels.

[0015] Optionally, the vacuum insulation board is prefabricated with tension bolt holes penetrating the surfaces on both sides thereof.

[0016] A mark is arranged on the surface of the protective layer corresponding to the position of the tension bolt hole, and the mark is selected from any one of a groove, a protrusion or a color.

[0017] Optionally, the thickness of the protective layer on both sides of the vacuum insulation interlayer is 2-5 cm, the thickness of the vacuum insulation interlayer is 2-3 cm, and the thickness of the inorganic protective layer is 2-5 mm.

[0018] Optionally, the particle size of fly ash is 180-200 mesh; the bulk density of vitrified microspheres is 100-120kg / m 3 , particle size is 0.6-1.0mm; the particle size of pre-foamed polystyrene particles is 2.0-3mm, and the foamed microspheres are made of foamed yangbuck powder.

[0019] The method for preparing the flame retardant thermal insulation protective layer slurry comprises the following steps:

[0020] (1.1) Add silicate cement, fly ash, vitrified microspheres, latex powder and cellulose ether into a container and stir evenly, then add water and continue stirring to obtain a uniformly mixed premixed slurry;

[0021] (1.2) Add the flame retardant into the container and stir to mix evenly;

[0022] (1.3) Add hollow glass microspheres, silica aerogel and foamed microspheres into a container and stir to mix evenly;

[0023] (1.4) Add the pre-foamed polystyrene particles into a container and stir to mix evenly to obtain a flame retardant thermal insulation protective layer slurry.

[0024] The method for preparing the flame-retardant composite thermal insulation non-disassembly outer template provided by the present invention comprises the following steps:

[0025] (1) Laying a first steel wire mesh, splicing and laying the vacuum insulation panels constituting the vacuum insulation interlayer on the top of the first steel wire mesh, and then laying a second steel wire mesh, and connecting the two steel wire meshes at the edge of the vacuum insulation panel through a connector to form a composite steel wire mesh vacuum insulation interlayer;

[0026] (2) pouring the first layer of inorganic protective layer slurry and the first layer of flame retardant thermal insulation protective layer slurry in the mold box in sequence;

[0027] (3) Laying the vacuum insulation interlayer on top of the first layer of flame retardant insulation protective layer slurry;

[0028] (4) pouring the second layer of flame retardant thermal insulation protective layer slurry and the second layer of inorganic protective layer slurry in sequence;

[0029] (5) After adding a protective plate on the top of the second layer of inorganic protective layer slurry, pressing is performed;

[0030] (6) After demoulding, the mold is cured for 6-8 days in an environment of 20-35°C and 50-70% humidity to produce a flame-retardant composite thermal insulation non-disassembly external formwork.

[0031] The beneficial effects of this application include but are not limited to:

[0032] The flame-retardant composite thermal insulation non-disassembly outer template provided by the present invention is composed of a vacuum thermal insulation interlayer and a flame-retardant thermal insulation protective layer wrapped on the outside thereof. The vacuum thermal insulation interlayer is formed by splicing a plurality of vacuum insulation panels, so that the outer template has high interlayer bonding strength, excellent fireproof and thermal insulation performance, and the thermal conductivity is reduced to 0.014 W / (m·K). The flame-retardant thermal insulation protective layer has thermal insulation performance, and the flame retardant can interrupt the combustion chain reaction, reduce the amount of smoke, and has a good flame retardant effect; the flame-retardant thermal insulation protective layer has high strength, low specific gravity, and does not deform or crack during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 A schematic cross-sectional view of the flame-retardant composite thermal insulation non-disassembly outer formwork provided by the present invention;

[0035] Figure 2 for Figure 1 A partial enlarged view of

[0036] Figure 3 This is a schematic diagram of two vacuum insulation panels being spliced ​​together left and right;

[0037] Figure 4 is a schematic diagram of a steel wire mesh;

[0038] Figure 5 for Figure 4 Enlarged view of part A in the middle;

[0039] In the figure, 100, vacuum insulation interlayer; 110, vacuum insulation panel; 111, gas barrier protective layer; 112, insulation core material unit; 113, hot-melt pressed edge; 114, tension bolt hole;

[0040] 200, flame retardant thermal insulation protective layer; 210, marking;

[0041] 300, inorganic protective layer;

[0042] 400. Wire mesh; 410. Connectors. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail in the following content. However, it should be pointed out that the following specific embodiments only provide specific operation examples of the present invention in an exemplary manner, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention is limited only by the claims. It is obvious to those skilled in the art that various other improvements and replacements can be made to the embodiments of the present invention within the protection scope defined by the claims of the present invention, and the same technical effects can still be achieved, thereby achieving the ultimate technical purpose of the present invention.

[0044] In the present invention, all ratios are weight ratios, all percentages are weight percentages, and the unit of temperature is ° C. In addition, all numerical ranges described in the present invention include end values ​​and may include new numerical ranges obtained by arbitrarily combining the upper and lower limits of the disclosed ranges.

[0045] like Figure 1 As shown in the figure, the flame-retardant composite thermal insulation non-disassembly outer template provided by the present invention includes a vacuum thermal insulation interlayer 100 and a flame-retardant thermal insulation protective layer 200 and an inorganic protective layer 300 wrapped on the outside of the vacuum thermal insulation interlayer 100, and the flame-retardant thermal insulation protective layer and the inorganic protective layer are formed by pouring and curing.

[0046] The inorganic protective layer 300 ensures the surface strength of the outer formwork and adopts commercially available cement-based mortar.

[0047] The flame retardant thermal insulation protective layer has fireproof and thermal insulation properties, and has good mechanical strength, and can protect the vacuum thermal insulation interlayer 100, while providing the support strength required by the template. The flame retardant thermal insulation protective layer slurry is made of the following raw materials in parts by weight:

[0048] 28-33 parts of Portland cement, 10-13 parts of fly ash, 5-7 parts of vitrified microspheres, 7-10 parts of hollow glass microspheres, 24-35 parts of pre-foamed polystyrene particles, 8-11 parts of flame retardant, 8-12 parts of silica aerogel, 1-3 parts of foamed microspheres, 2-5 parts of latex powder, 1-2 parts of cellulose ether, and 35-45 parts of water;

[0049] The flame retardant is made of the following raw materials in parts by weight: 1-2 parts of magnesium hydroxide, 1-2 parts of aluminum hydroxide, 0.4-0.7 parts of red phosphorus, 1-2 parts of melamine, 1-2 parts of pentaerythritol, and 2-3 parts of ammonium polyphosphate.

[0050] The method for preparing the flame retardant thermal insulation protective layer slurry comprises the following steps:

[0051] (1.1) Add silicate cement, fly ash, vitrified microspheres, latex powder and cellulose ether into a container and stir evenly, then add water and continue stirring to obtain a uniformly mixed premixed slurry;

[0052] (1.2) Add the flame retardant into the container and stir to mix evenly;

[0053] (1.3) Add hollow glass microspheres, silica aerogel and foamed microspheres into a container and stir to mix evenly;

[0054] (1.4) Add the pre-foamed polystyrene particles into a container and stir to mix evenly to obtain a flame retardant thermal insulation protective layer slurry.

[0055] like Figure 1-Figure 5 As shown in , in one specific embodiment, the vacuum insulation interlayer 100 is formed by a plurality of square vacuum insulation panels 110 spliced ​​in a rectangular array, each vacuum insulation panel 110 includes two gas barrier protective layers 111 and a plurality of insulation core material units 112 vacuum-encapsulated between the two gas barrier protective layers 111, each insulation core material unit 112 is arranged in m rows and n columns, and the two gas barrier protective layers 111 around each insulation core material unit 112 are sealed together by hot melt pressing. During the application process, even if the outer template needs to be punched, only the seal of a single insulation core material unit 112 is destroyed, and the insulation failure problem of other insulation core material units 112 will not occur, thereby improving the anti-destruction ability of the vacuum insulation panel 110 and ensuring the overall insulation effect of the vacuum insulation panel 110. In order to facilitate the extraction of vacuum between the two gas barrier protective layers 111, n is preferably taken from 1 or 2, so that the vacuum can be easily extracted from the edge of the gas barrier protective layer 111. As shown Figure 3 As shown in , the vacuum insulation interlayer 100 is formed by splicing two vacuum insulation panels 110 , and each vacuum insulation panel 110 includes a row of insulation core material units 112 .

[0056] The size of each insulation core material unit 112 is (10-40cm)×(10-60cm)×(1.5-4cm); the hot melt pressed edge 113 between adjacent insulation core material units 112 is generally 3-8cm wide. Reasonable setting of the size of the insulation core material unit and the width of the hot melt pressed edge so that the effective area of ​​the insulation core material on the insulation board accounts for no less than 75% can achieve the required ultra-low energy consumption insulation effect. Although the presence of the hot melt pressed edge 113 will reduce the effective insulation area of ​​the vacuum insulation panel 110, the flame retardant insulation protective layer can be filled into the hot melt pressed edge to ensure the overall insulation performance of the template.

[0057] Among them, the material of the gas barrier protective layer 111 and the thermal insulation core material in the thermal insulation core material unit 112 are conventional materials in the prior art. For example, the gas barrier protective layer 111 generally adopts a glass fiber aluminum-plastic composite structure, which is hot-melted and pressed by PE strips. The thermal insulation core material adopts common materials in the prior art, as long as the thermal conductivity of the vacuum insulation panel 110 made after vacuuming is less than 0.005W / (m·K). The thermal insulation core material in the present invention is made of chopped glass fiber strands, which has a low thermal conductivity. The chopped glass fiber strands are pressed into fiberboards and then cut into thermal insulation core material units as required.

[0058] The thickness of the flame retardant heat-insulating protective layer on both sides of the vacuum heat-insulating interlayer 100 is 2-5 cm, the thickness of the vacuum heat-insulating interlayer 100 is 2-3 cm, and the overall thickness of the outer template is 6-10 cm.

[0059] In order to further improve the bonding strength between the flame retardant heat preservation protective layer and the vacuum insulation panel 110 , an interface agent is preferably coated on the surface of the vacuum insulation panel 110 .

[0060] In one specific embodiment, the vacuum insulation interlayer 100 is sandwiched between two steel wire meshes 100, and the two steel wire meshes are connected at the edge of the two vacuum insulation panels by a connector 410. The mesh size of the steel wire mesh 400 is about 1 cm×1 cm, and the area of ​​the steel wire mesh 400 is slightly larger than the area of ​​the vacuum insulation interlayer 100. The two steel wire meshes 400 clamp the vacuum insulation interlayer 100, so that the insulation core material cannot expand even if the seal of individual insulation core material units 112 is damaged; and the two steel wire meshes 400 also play the role of connecting the flame retardant insulation protective layer 200 on both sides of the vacuum insulation interlayer 100, so that the flame retardant insulation protective layer 200 on both sides of the vacuum insulation interlayer 100 is connected as a whole, which improves the interlayer tensile strength between the flame retardant insulation protective layer 200 and the vacuum insulation interlayer 100, and even if the vacuum of individual insulation core material units is damaged, the insulation core material can be prevented from expanding, and the bulging bag phenomenon is prevented. Typically, the connectors are made of lashing wire.

[0061] When building the support system at the construction site, the outer formwork and the inner formwork need to be connected by tension bolts. Therefore, tension bolt holes for the tension bolts to pass through need to be provided on the outer formwork. In order to reduce the damage to the vacuum insulation panel caused by the subsequent punching, it is preferred that tension bolt holes 114 that penetrate the surfaces on both sides of the vacuum insulation panel are prefabricated; a mark 210 is provided on the surface of the protective layer corresponding to the position of the tension bolt hole 114, and the mark is selected from any one of a groove, a protrusion or a color. When grooves or protrusions are used, corresponding protrusions or grooves can be provided on the inner plate surface of the casting guard plate, and grooves or protrusions can be formed on the surface of the inorganic protective layer 300 after demolding.

[0062] The outer formwork is usually in various sizes such as 300cm×75cm, 300cm×80cm, 300cm×120cm, etc., and one tension bolt hole is required for approximately every 40cm×40cm area on the outer formwork. In actual application, the positions of the tension bolt holes are arranged in combination with the size of the outer formwork, and the sizes of the insulation core material unit and the vacuum insulation panel are determined.

[0063] The tension bolt holes 114 can be prefabricated at the edge or the middle of the vacuum insulation panel 110. When the tension bolt holes are prefabricated in the middle of the vacuum insulation panel, they can be directly prefabricated into a circle; when the tension bolt holes are prefabricated at the edge of the vacuum insulation panel, they can be prefabricated into a semicircle. The semicircular tension bolt holes on two vacuum insulation panels can be matched to form a circle.

[0064] When making a vacuum insulation interlayer with prefabricated tension bolt holes, it is necessary to cut the insulation core material unit accordingly. Specifically, when the tension bolt holes are prefabricated at the edge of the vacuum insulation panel, a notch is cut at the edge of the corresponding insulation core material unit, and when the tension bolt holes are prefabricated in the middle of the vacuum insulation panel, a through hole needs to be cut on the insulation core material unit.

[0065] During the application process, even if the outer template needs to be punched, only the seal of a single insulation core material unit will be damaged, and other insulation core material units will not have insulation failure problems, thereby improving the anti-destruction ability of the vacuum insulation panel and ensuring the overall insulation effect of the vacuum insulation panel.

[0066] During production, the gas barrier protective layer can be pre-heat-pressed and fused to part of the wrapped edge according to the arrangement rule of the thermal insulation core material unit, and then each thermal insulation core material unit 112 is arranged in order between two gas barrier protective layers 111, and then the space between the two gas barrier protective layers 111 is evacuated and the two gas barrier protective layers 111 around the above-mentioned notch or through hole and the edge are sealed by hot melt pressing equipment. Finally, the gas barrier protective layer 111 around the above-mentioned notch or through hole is cut into notches or through holes of corresponding shapes to complete the prefabrication process of the tension bolt hole. After the flame-retardant thermal insulation protective layer 200 is poured on the outside of the vacuum thermal insulation interlayer 100, it will be filled into the tension bolt hole 114, forming a complete wrapping protection for the vacuum thermal insulation interlayer 100 around the tension bolt hole 114.

[0067] The method for preparing the flame-retardant composite thermal insulation non-disassembly outer template provided by the present invention is characterized by comprising the following steps:

[0068] (1) Laying a first steel wire mesh, splicing and laying the vacuum insulation panels constituting the vacuum insulation interlayer on the top of the first steel wire mesh, then laying a second steel wire mesh, and connecting the two steel wire meshes at the edge of the vacuum insulation panel through a connector to form a vacuum insulation interlayer of a composite steel wire mesh; folding the hot-melt pressed edges around the vacuum insulation panel, and positioning the folded hot-melt pressed edges through the connector so that they are against the side of the vacuum insulation panel;

[0069] (2) pouring the first layer of inorganic protective layer slurry and the first layer of flame retardant thermal insulation protective layer slurry in the mold box in sequence;

[0070] (3) Laying the vacuum insulation interlayer on top of the first layer of flame retardant insulation protective layer slurry;

[0071] (4) pouring the second layer of flame retardant thermal insulation protective layer slurry and the second layer of inorganic protective layer slurry in sequence;

[0072] (5) After adding a protective plate on the top of the second layer of inorganic protective layer slurry, pressing is performed;

[0073] (6) After demoulding, the mold is cured for 6-8 days in an environment of 20-35°C and 50-70% humidity to produce a flame-retardant composite thermal insulation non-disassembly external formwork.

[0074] The flame retardant composite thermal insulation non-disassembly exterior formwork provided by the present invention will be described in detail below through specific embodiments.

[0075] All raw materials in the following examples were purchased from commercial sources. The specifications of some raw materials are as follows: the particle size of fly ash is 180-200 mesh; the bulk density of vitrified microspheres is 100-120 kg / m 3 , the particle size is 0.6-1.0mm; the particle size of the pre-foamed polystyrene particles is 2.0-3mm, the foaming microspheres are made of yangba powder, and the cellulose ether is methyl cellulose ether, hydroxypropyl methyl cellulose ether or hydroxyethyl methyl cellulose ether.

[0076] In each embodiment, the size of the insulation core material unit is 35×40cm, the specification of the outer template is 300cm×75cm, and one tension bolt hole is arranged approximately every 40cm×40cm area on the outer template. The thickness of the vacuum insulation interlayer is 2cm, and the flame retardant insulation protective layers on both sides are 2cm, and the thickness of the inorganic protective layer is 2-5mm.

[0077] Embodiment 1:

[0078] The flame-retardant composite thermal insulation non-disassembly outer template provided in Example 1 is composed of a vacuum thermal insulation interlayer, a flame-retardant thermal insulation protective layer and an inorganic protective layer sequentially arranged on each side of the vacuum thermal insulation interlayer; the raw materials used in the flame-retardant thermal insulation protective layer slurry are as follows:

[0079] 28kg of Portland cement, 12kg of fly ash, 5kg of vitrified microspheres, 7kg of hollow glass microspheres, 35kg of pre-foamed polystyrene particles, 10kg of silica aerogel, 3kg of foamed microspheres, 2kg of latex powder, and 1kg of cellulose ether;

[0080] Flame retardant: 1kg magnesium hydroxide, 1.5kg aluminum hydroxide, 0.4kg red phosphorus, 3kg red phosphorus, 2kg melamine, 2kg pentaerythritol, 3kg ammonium polyphosphate;

[0081] 38kg of water.

[0082] The flame-retardant composite thermal insulation non-disassembly outer template provided in Example 1 was cured for 8 days in an environment of 35° C. and 50% humidity after demoulding.

[0083] Embodiment 2:

[0084] like Figure 5 As shown in , the flame-retardant composite thermal insulation non-removable outer template provided in Example 2 is based on Example 1, and the vacuum insulation interlayer is sandwiched between two steel wire meshes, and the two steel wire meshes are connected by a connector at the edge of the two vacuum insulation panels.

[0085] The raw materials used in the flame retardant thermal insulation protective layer slurry provided in Example 2 are as follows:

[0086] 30kg of Portland cement, 13kg of fly ash, 7kg of vitrified microspheres, 10kg of hollow glass microspheres, 24kg of pre-foamed polystyrene particles, 8kg of silica aerogel, 1kg of foamed microspheres, 5kg of latex powder, and 1.5kg of cellulose ether;

[0087] Flame retardant: 2kg magnesium hydroxide, 1kg aluminum hydroxide, 0.5kg red phosphorus, 1.2kg melamine, 1.5kg pentaerythritol, 2kg ammonium polyphosphate;

[0088] Water 45kg.

[0089] The flame-retardant composite thermal insulation non-disassembly outer template provided in Example 2 was cured for 6 days in an environment of 25° C. and 70% humidity after demoulding.

[0090] Embodiment 3:

[0091] The structure of the flame-retardant composite thermal insulation non-disassembly outer template provided in Example 3 is the same as that in Example 2, and the raw materials used in the flame-retardant thermal insulation protective layer slurry are as follows:

[0092] 33kg of Portland cement, 10kg of fly ash, 6kg of vitrified microspheres, 9kg of hollow glass microspheres, 30kg of pre-foamed polystyrene particles, 12kg of silica aerogel, 2kg of foamed microspheres, 3kg of latex powder, and 2kg of cellulose ether;

[0093] Flame retardant: 1.5kg magnesium hydroxide, 2kg aluminum hydroxide, 0.7kg red phosphorus, 1kg melamine, 1kg pentaerythritol, 2.5kg ammonium polyphosphate;

[0094] 35kg of water.

[0095] The flame-retardant composite thermal insulation non-disassembly outer template provided in Example 3 was cured for 7 days in an environment of 20° C. and 60% humidity after demoulding.

[0096] The following Table 1 shows the performance test results of the flame-retardant composite thermal insulation non-disassembly exterior formwork prepared in Examples 1-3.

[0097]

[0098] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any substitution, improvement or change made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0099] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A flame retardant composite thermal insulation non-disassembly outer formwork, characterized in that: It includes a vacuum thermal insulation interlayer and a flame retardant thermal insulation protective layer and an inorganic protective layer wrapped outside the vacuum thermal insulation interlayer, wherein the flame retardant thermal insulation protective layer and the inorganic protective layer are formed by pouring and curing; The slurry of the flame retardant thermal insulation protective layer is made of the following raw materials in parts by weight: 28-33 parts of silicate cement, 10-13 parts of fly ash, 5-7 parts of vitrified microspheres, 7-10 parts of hollow glass microspheres, 24-35 parts of pre-foamed polystyrene particles, 8-11 parts of flame retardant, 8-12 parts of silica aerogel, 1-3 parts of foamed microspheres, 2-5 parts of latex powder, 1-2 parts of cellulose ether, and 35-45 parts of water; The flame retardant is made of the following raw materials in parts by weight: 1-2 parts of magnesium hydroxide, 1-2 parts of aluminum hydroxide, 0.4-0.7 parts of red phosphorus, 1-2 parts of melamine, 1-2 parts of pentaerythritol, and 2-3 parts of ammonium polyphosphate; The vacuum insulation interlayer is formed by splicing a plurality of square vacuum insulation panels, each of which includes two gas barrier protective layers and a plurality of insulation core material units vacuum-encapsulated between the two gas barrier protective layers, each insulation core material unit is arranged in m rows and n columns, and the two gas barrier protective layers around each insulation core material unit are sealed together by hot-melt pressing; The vacuum insulation board is prefabricated with tension bolt holes penetrating the surfaces on both sides thereof; A mark is provided on the surface of the protective layer corresponding to the position of the tension bolt hole, and the mark is selected from any one of a groove, a protrusion or a color; The vacuum insulation interlayer is sandwiched between two steel wire meshes, and the two steel wire meshes are connected at the edges of the two vacuum insulation panels by a connector; The method for preparing the flame-retardant composite thermal insulation non-disassembly external template comprises the following steps: (1) Laying a first steel wire mesh, splicing and laying the vacuum insulation panels constituting the vacuum insulation interlayer on the top of the first steel wire mesh, and then laying a second steel wire mesh, and connecting the two steel wire meshes at the edge of the vacuum insulation panel through a connector to form a composite steel wire mesh vacuum insulation interlayer; (2) pouring the first layer of inorganic protective layer slurry and the first layer of flame retardant thermal insulation protective layer slurry in the mold box in sequence; (3) Laying the vacuum insulation interlayer on top of the first layer of flame retardant insulation protective layer slurry; (4) pouring the second layer of flame retardant thermal insulation protective layer slurry and the second layer of inorganic protective layer slurry in sequence; (5) After adding a protective plate on the top of the second layer of inorganic protective layer slurry, pressing is performed; (6) After demoulding, the mold is cured for 6-8 days in an environment of 20-35°C and 50-70% humidity to produce a flame-retardant composite thermal insulation non-disassembly external formwork; When making a vacuum insulation interlayer with prefabricated tension bolt holes, it is necessary to cut the insulation core material unit accordingly; specifically, when the tension bolt holes are prefabricated at the edge of the vacuum insulation board, a notch is cut at the edge of the corresponding insulation core material unit, and when the tension bolt holes are prefabricated in the middle of the vacuum insulation board, a through hole needs to be cut on the insulation core material unit; During production, the gas barrier protective layer is pre-heat-pressed and fused to part of the wrapped edges according to the arrangement rule of the thermal insulation core material units, and then the thermal insulation core material units are arranged in order between the two gas barrier protective layers, and then the space between the two gas barrier protective layers is evacuated and the two gas barrier protective layers around the above-mentioned notches or through holes and at the edges are sealed by hot-melt pressing equipment; finally, the gas barrier protective layer around the above-mentioned notches or through holes is cut into notches or through holes of corresponding shapes to complete the prefabrication process of the tension bolt holes; after the flame-retardant thermal insulation protective layer is poured on the outside of the vacuum thermal insulation interlayer, it will be filled into the tension bolt holes to completely wrap and protect the vacuum thermal insulation interlayer around the tension bolt holes.

2. The flame-retardant composite thermal insulation non-disassembly outer formwork according to claim 1 is characterized in that: The dimensions of each thermal insulation core unit are (10-40 cm)×(10-60 cm)×(1.5-4 cm).

3. The flame-retardant composite thermal insulation non-disassembly outer formwork according to claim 1 is characterized in that: The thickness of the flame retardant thermal insulation protective layer on both sides of the vacuum thermal insulation interlayer is 2-5 cm, the thickness of the vacuum thermal insulation interlayer is 2-3 cm, and the thickness of the inorganic protective layer is 2-5 mm.

4. The flame-retardant composite thermal insulation non-disassembly outer formwork according to claim 1 is characterized in that: The particle size of fly ash is 180-200 mesh; the bulk density of vitrified microspheres is 100-120kg / m 3 , particle size is 0.6-1.0mm; the particle size of pre-foamed polystyrene particles is 2.0-3mm, and the foamed microspheres are made of foamed yangbuck powder.

5. The flame-retardant composite thermal insulation non-disassembly outer formwork according to claim 1 is characterized in that: The method for preparing the flame retardant thermal insulation protective layer slurry comprises the following steps: (1.1) Add silicate cement, fly ash, vitrified microspheres, latex powder and cellulose ether into a container and stir evenly, then add water and continue stirring to obtain a uniformly mixed premixed slurry; (1.2) Add the flame retardant into the container and stir to mix evenly; (1.3) Add hollow glass microspheres, silica aerogel and foamed microspheres into a container and stir to mix evenly; (1.4) Add the pre-foamed polystyrene particles into a container and stir to mix evenly to obtain a flame retardant thermal insulation protective layer slurry.

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