CN204475658U - A kind of high strength space enclosing structure sandwiched plate - Google Patents
A kind of high strength space enclosing structure sandwiched plate Download PDFInfo
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- CN204475658U CN204475658U CN201520137242.5U CN201520137242U CN204475658U CN 204475658 U CN204475658 U CN 204475658U CN 201520137242 U CN201520137242 U CN 201520137242U CN 204475658 U CN204475658 U CN 204475658U
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Abstract
The utility model provides a kind of high strength space enclosing structure sandwiched plate, and comprise central layer, in described central layer, horizontal direction is evenly provided with the hole running through described central layer, and the cross section entirety of described hole is rectangle, and the top of described square-section is set to arch.Sandwiched plate of the present utility model, its product material adopts the Waste Sulfuric Acid collected and waste phosphoric acid to be primary raw material, effectively utilizes spent acid, reduces cost of production, saved the energy and also avoid the harm of spent acid to environment simultaneously, protected environment; Be set to arch above its cross section of hole be simultaneously provided with in its structure, make product when extruding, can Action of Gravity Field be resisted, make not form concave surface during contraction, ensure that the smooth of product surface.
Description
Technical field
The utility model relates to a kind of high strength space enclosing structure sandwiched plate, belongs to building field.
Background technology
Space enclosing structure sandwiched plate as one conveniently constructional materials be widely used in every field.Conventional sandwiched plate, by two-layer forming metal panel (or other materials panel) and directly in the panel between foaming, slaking shaping macromolecule heat insulation inner core form, be convenient to installation, lightweight, efficiently.Current sandwiched plate on the market divides from core and mainly comprises: polyphenyl sandwich plate and EPS sandwiched plate, extruded polystyrene sandwiched plate and XPS sandwiched plate, hard polyaminoester sandwiched plate and PU sandwiched plate, three polyester sandwiched plates and PIR sandwiched plate, phenolic aldehyde sandwiched plate and PF sandwiched plate, rockwool sandwich board and RW sandwiched plate.
Along with the development of society, people are also strict all the more to the material performance requirement of sandwiched plate, such as its fireproof performance, corrosion resistance, mechanical strength etc.People are also actively finding new core material simultaneously.Its material ingredient of core material, gel rubber material is absolutely necessary part.The performance of gel rubber material usually can have influence on the quality of final constructional materials.
Cementitious material, also known as cementitious matter.Under physics, chemical action, firm Shi Zhuanti can be become from slurry, and the cementing unclassified stores of energy, make the material of the complex solid of certain mechanical strength.Be divided into hydraulic cementing materials and the large class of on-hydraulic cementitious material two.Be divided into again in a rear class inorganic with organic two kinds.Usually acidic materials can be used, such as sulfuric acid, phosphoric acid etc. in the preparation process of inorganic gel materials.The cost of the acidic materials used directly has influence on the cost of inorganic gel materials.In order to reduce cost of production, be necessary to reduce the cost of material.We find simultaneously, as the industries such as steel-making, plating, pharmacy usually can use some strong acid, such as sulfuric acid, phosphoric acid etc. in industrial production.Because of at this in process of production, have some residual spent acid and produce, if these spent acid are discharged into without process in environment, not only can make water body or soil acidification, ecological environment is worked the mischief, and waste ample resources.If the spent acid in producing can be carried out recyclings to rise and make a return journey and prepare gel rubber material, so generation central layer constructional materials, this method well reduced costs of can yet be regarded as.But, utilize spent acid to make inorganic gel materials, also do not develop in the market, yet there is many problems on stream, such as, compared with the material property produced with routine, the good and bad problem of performance of the inorganic gel materials utilizing spent acid to generate.
Current central layer is normally put together up and down by two boards, its length and width can be restricted like this, have impact on its production application, such as application number is that the core plate structure mentioned in 201010244890.2 Chinese patents " a kind of environment-friendly sandwich enclosure structural plate " is like this in time.
Therefore, in order to socioeconomic development, be necessary the space enclosing structure sandwiched plate developing a kind of new structure.
Utility model content
Goal of the invention: the purpose of this utility model is to solve the deficiencies in the prior art, provides a kind of high strength space enclosing structure sandwiched plate.
Technical scheme: in order to realize above object, the utility model provides a kind of high strength space enclosing structure sandwiched plate, and comprise central layer, in described central layer, horizontal direction is evenly provided with the hole running through described central layer, the cross section entirety of described hole is rectangle, and the top of described square-section is set to arch.The hole be provided with in the structure of the utility model product is set to arch above its cross section, makes product when extruding, and can resist Action of Gravity Field, makes not form concave surface during contraction, ensure that the smooth of product surface.
The constituent of described central layer by weight, comprises following component:
Waste Sulfuric Acid: 50-100 part;
Waste phosphoric acid: 50-100 part;
Hydrophosphate: 10-20 part;
Magnesium oxide powder: 50-100 part;
Mica scrap: 10-20 part.The utility model with discarded sulfuric acid and phosphoric acid for primary raw material, with the addition of some auxiliary agent hydrophosphates, magnesium oxide powder and water-absorbing material mica scrap simultaneously, product environment-protecting asepsis, fire line is good, mechanical strength height is turned waste into wealth simultaneously (utilization to spent acid), save the energy, reduced cost, also protect environment simultaneously; In the composition of product, adopt magnesia to replace traditional magnesium chloride simultaneously, the generation of anti-halogen phenomenon can be avoided; In the composition of product, add the water absorption rate that mica scrap not only can reduce product and also play a supporting role simultaneously, improve the intensity of product; Preferably, above described hole arch limit apogee distance described in the distance of central layer upper surface be 4-10mm, below described hole, described in distance, the distance of central layer soffit is 4-10mm, and the spacing between described adjacent holes is 5-7mm.
Preferably, described hole vertical direction maximum height is 30-40mm, and the width of described hole horizontal direction is 30-45mm.
Preferably, described hole horizontal direction is 10-13mm apart from the distance of described central layer left and right edges.
Preferably, the hole that described central layer is provided with, the hole ratio of its entirety is 0.5-0.7.
Preferably, described hydrophosphate is any one in potassium hydrogen phosphate, dibastic sodium phosphate, calcium monohydrogen phosphate, ammonium hydrogen phosphate.
Preferably, in described Waste Sulfuric Acid and waste phosphoric acid, the concentration of effective acid counts 10-50% by mass percentage.
Preferably, the constituent of described central layer by weight, also comprises following component:
Sepiolite: 1-2 part; Sepiolite be a kind of tool layer chain structure containing Shuifu County's magnesium silicate clay mineral, shrinkage factor is low, plasticity is good, specific surface is large, adsorptivity is strong, sepiolite also have decolouring, heat insulation, insulate, anticorrosive, radioresistance and the performance such as thermally-stabilised, join in product, the material made has fire-retardant fireproof well, also has corrosion resistance well simultaneously;
Hydrotalcite: 0.8-1.2 part; Hydrotalcite has anti-flammability well, can improve anti-flammability and the fire line of material after adding;
Glass fiber: 1.5-2.5 part; Glass fiber is a kind of Inorganic Non-metallic Materials of excellent performance, of a great variety, and advantage is that heat resistance is strong, corrosion resistance good, and mechanical strength is high, can the combination property of reinforcing material after adding;
Perlite: 2-3 part; Perlite has that apparent density is light, coefficient of thermal conductivity is low, chemical stability is good, serviceability temperature scope is wide, wettability power is little, and the feature such as nontoxic, tasteless, fire prevention, sound-absorbing, fire line and the chemical stability of material can be improved;
Silicon powder: 1-2 part; Silicon powder is by natural quartz (SiO2) or vitreous silica (natural quartz is through high-temperature fusion, the cooled amorphous sio2) micro mist through the multiple tracks processes such as broken, ball milling (or vibration, airflow milling), flotation, pickling purification, high purity water process; Silicon powder is a kind of nontoxic, tasteless, free of contamination Inorganic Non-metallic Materials; The excellent performance such as it possesses that temperature tolerance is good, acid-alkali-corrosive-resisting, poor thermal conductivity, high insulation, low bulk, stable chemical performance, hardness are large; After adding silicon powder, every combination property of material can be improved well;
Ethylene glycol: 3-5 part; Be have fabulous frost resistance, simultaneously cheap environmental protection, can the frost resistance of reinforcing material;
Stabilizing agent: 2-4 part;
Waterproof agent: 1-2 part;
Blowing agent: 0.5-1.0 part;
Coupling agent: 0.8-1.2 part;
Ultraviolet (UV) resistant agent: 1.2-1.4 part.
Preferred further, described stabilizing agent is calcium-zinc composite stabilizing agent and pentaerythrite composition by weight ratio is the mixture of 1:2; Adding stabilizing agent can make its character of material of preparation more stable, prevent its decompose, aging, calcium-zinc composite stabilizing agent is compared to stabilizing agents such as some other metallic lead classes simultaneously, not only stablizing effect is good, also nontoxic, environmental protection simultaneously, after pentaerythrite mixing, its stablizing effect can be further enhanced;
Described waterproof agent is waterproofing agent of organosilicon; Waterproofing agent of organosilicon is a kind of pollution-free, nonirritant waterproof agent, can improve the water resistance of product, thus after obtained material is used for constructional materials, can improve the waterproof of building, protection against the tide, mildew-resistant and uviolresistance after adding;
Described blowing agent is lauryl sodium sulfate; There is surface-active action, environment-protecting asepsis, the combination property of product can be strengthened;
Described coupling agent is vinyl three tert-butyl peroxide silane; The performances such as the heat resistance of product, anti-flammability, solvent resistance, mechanical strength can be significantly improved;
Described ultraviolet (UV) resistant agent is UV-531 ultra-violet absorber.UV-531 ultra-violet absorber, environment-protecting asepsis, can make the photostability of product effective, plays anti-old effect, strengthens the combination property of product.
A kind of processing method of high strength space enclosing structure sandwiched plate, described central layer preparation method is specially: prepare burden by described formula, the mixing of materials prepared stirs, the moisture content of throughout its mass is made to be 16-18%, then the material of mixing put into vacuum extractor and reduced the moisture content of 1%-2% by vacuum extractor further, extruded by extruder, namely final drying solidification can form described central layer again.This processing method, simple, the equipment of use is all conventional common apparatus, is applicable to suitability for industrialized production.
Beneficial effect: the high strength space enclosing structure sandwiched plate that the utility model provides and processing method thereof compared with prior art, have the following advantages:
1, high strength space enclosing structure sandwiched plate of the present utility model, its product material adopts the Waste Sulfuric Acid collected and waste phosphoric acid to be primary raw material, instead of traditional freshly prepd sulfuric acid and phosphoric acid, effectively utilize spent acid, turn waste into wealth, reduce cost of production, saved the energy and also avoid the harm of spent acid to environment simultaneously, protected environment; Be set to arch above its cross section of hole be simultaneously provided with in its structure, make product when extruding, can Action of Gravity Field be resisted, make not form concave surface during contraction, ensure that the smooth of product surface;
2, high strength space enclosing structure sandwiched plate of the present utility model, material eliminates the use of magnesium chloride, magnesia is adopted to replace magnesium chloride, the generation of anti-halogen phenomenon is avoided under the prerequisite of quality that ensure that product, add mica scrap in material simultaneously, also can play a supporting role while playing water sorption, enhance the intensity of product;
3, high strength space enclosing structure sandwiched plate of the present utility model, the material environment friendly of use is nontoxic, and the final products produced may be used for constructional materials;
4, high strength space enclosing structure sandwiched plate of the present utility model, adds the additive that some have anti-flammability and fire line, and make product have fire line well, the fire-protection rating of this product is high, can reach 1300 degree;
5, high strength space enclosing structure sandwiched plate of the present utility model, its central layer can be extruded by machinery equipment is one-body molded, and without the need to split, production operation more succinctly facilitates, and improves production efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic cross-section of central layer of the present utility model;
Fig. 2 is the schematic cross-section of the hole in the utility model central layer;
In figure: 1-central layer, 2-hole.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in detail; but illustrate that protection domain of the present utility model is not limited to the concrete scope of the present embodiment simultaneously; based on the embodiment in the utility model; those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
embodiment 1
As illustrated in fig. 1 and 2:
A kind of high strength space enclosing structure sandwiched plate, comprise central layer 1, in described central layer 1, horizontal direction is evenly provided with the hole 2 running through described central layer 1, the cross section entirety of described hole 2 is rectangle, the top of described square-section is set to arch, and the turning of the below of wherein said square-section is set to process corner, and this process corner is fillet or chamfering, the constituent of described central layer 1 by weight, comprises following component:
Waste Sulfuric Acid (content of active alkali sulfur is 10%): 50 parts;
Waste phosphoric acid (content of available phosphoric acid is 10%): 50 parts;
Hydrophosphate (this hydrophosphate reasonably can select arbitrarily the one in potassium hydrogen phosphate, dibastic sodium phosphate, calcium monohydrogen phosphate, ammonium hydrogen phosphate): 10 parts;
Magnesium oxide powder: 50 parts;
Mica scrap: 10 parts.
The constituent of described central layer 1 by weight, also comprises following component:
Sepiolite: 1 part;
Hydrotalcite: 0.8 part;
Glass fiber: 1.5 parts;
Perlite: 2 parts;
Silicon powder: 1 part;
Ethylene glycol: 3 parts;
Stabilizing agent (calcium-zinc composite stabilizing agent and pentaerythrite composition by weight ratio are the mixture of 1:2): 2 parts;
Waterproof agent (the rational arbitrarily constructional materials waterproofing agent of organosilicon that market is directly bought): 1 part;
Blowing agent (lauryl sodium sulfate): 0.5 part;
Coupling agent (vinyl three tert-butyl peroxide silane): 0.8 part;
Ultraviolet (UV) resistant agent (UV-531 ultra-violet absorber): 1.2 parts.
The length of its entirety of central layer 1 selected in the present embodiment is 570mm, and thickness is 48.8mm, is specifically described for this standard:
The quantity of the present embodiment Hole 2 is set to 12, described hole 2 is distributed in described central layer 1 uniformly, above described hole 2 arch limit apogee distance described in the distance of central layer 1 upper surface be 6mm, below described hole 2, the distance of central layer 1 soffit described in distance is also 6mm, spacing between described adjacent holes 2 is 6mm, described hole 2 vertical direction maximum height is 36.8mm, the width of described hole 2 horizontal direction is 40mm, and described hole 2 horizontal direction is 12mm apart from the distance of described central layer 1 left and right edges.
The hole 2 that in the present embodiment, central layer 1 is provided with, hole ratio is 0.629.
A kind of processing method of high strength space enclosing structure sandwiched plate, described central layer 1 preparation method is specially: prepare burden by described formula, the mixing of materials prepared stirs, the moisture content of throughout its mass is made to be 16-18%, then the material of mixing put into vacuum extractor and reduced the moisture content of 1%-2% by vacuum extractor further, extruded by extruder, namely final drying solidification can form described central layer 1 again.
embodiment 2
As illustrated in fig. 1 and 2:
A kind of high strength space enclosing structure sandwiched plate, comprise central layer 1, in described central layer 1, horizontal direction is evenly provided with the hole 2 running through described central layer 1, the cross section entirety of described hole 2 is rectangle, the top of described square-section is set to arch, and the turning of the below of wherein said square-section is set to process corner, and this process corner is fillet or chamfering, the constituent of described central layer 1 by weight, comprises following component:
Waste Sulfuric Acid (content of active alkali sulfur is 25%): 75 parts;
Waste phosphoric acid (content of available phosphoric acid is 25%): 75 parts;
Hydrophosphate (this hydrophosphate reasonably can select arbitrarily the one in potassium hydrogen phosphate, dibastic sodium phosphate, calcium monohydrogen phosphate, ammonium hydrogen phosphate): 15 parts;
Magnesium oxide powder: 75 parts;
Mica scrap: 15 parts.
The constituent of described central layer 1 by weight, also comprises following component:
Sepiolite: 1.5 parts;
Hydrotalcite: 1.0 parts;
Glass fiber: 2.0 parts;
Perlite: 2.5 parts;
Silicon powder: 1.5 parts;
Ethylene glycol: 4 parts;
Stabilizing agent (calcium-zinc composite stabilizing agent and pentaerythrite composition by weight ratio are the mixture of 1:2): 3 parts;
Waterproof agent (the rational arbitrarily constructional materials waterproofing agent of organosilicon that market is directly bought): 1.5 parts;
Blowing agent (lauryl sodium sulfate): 0.75 part;
Coupling agent (vinyl three tert-butyl peroxide silane): 1.0 parts;
Ultraviolet (UV) resistant agent (UV-531 ultra-violet absorber): 1.3 parts.
The length of its entirety of central layer 1 selected in the present embodiment is 570mm, and thickness is 48.8mm, is specifically described for this standard:
The quantity of the present embodiment Hole 2 is set to 13, described hole 2 is distributed in described central layer 1 uniformly, above described hole 2 arch limit apogee distance described in the distance of central layer 1 upper surface be 7mm, below described hole 2, the distance of central layer 1 soffit described in distance is also 7mm, spacing between described adjacent holes 2 is 6mm, described hole 2 vertical direction maximum height is 34.8mm, the width of described hole 2 horizontal direction is 36.75mm, and described hole 2 horizontal direction is 10.13mm apart from the distance of described central layer 1 left and right edges.
The hole 2 that in the present embodiment, central layer 1 is provided with, hole ratio is 0.583.
A kind of processing method of high strength space enclosing structure sandwiched plate, described central layer 1 preparation method is specially: prepare burden by described formula, the mixing of materials prepared stirs, the moisture content of throughout its mass is made to be 16-18%, then the material of mixing put into vacuum extractor and reduced the moisture content of 1%-2% by vacuum extractor further, extruded by extruder, namely final drying solidification can form described central layer 1 again.
embodiment 3
As illustrated in fig. 1 and 2:
A kind of high strength space enclosing structure sandwiched plate, comprise central layer 1, in described central layer 1, horizontal direction is evenly provided with the hole 2 running through described central layer 1, the cross section entirety of described hole 2 is rectangle, the top of described square-section is set to arch, and the turning of the below of wherein said square-section is set to process corner, and this process corner is fillet or chamfering, the constituent of described central layer 1 by weight, comprises following component:
Waste Sulfuric Acid (content of active alkali sulfur is 50%): 100 parts;
Waste phosphoric acid (content of available phosphoric acid is 50%): 100 parts;
Hydrophosphate (this hydrophosphate reasonably can select arbitrarily the one in potassium hydrogen phosphate, dibastic sodium phosphate, calcium monohydrogen phosphate, ammonium hydrogen phosphate): 20 parts;
Magnesium oxide powder: 100 parts;
Mica scrap: 20 parts.
The constituent of described central layer 1 by weight, also comprises following component:
Sepiolite: 2 parts;
Hydrotalcite: 1.2 parts;
Glass fiber: 2.5 parts;
Perlite: 3 parts;
Silicon powder: 2 parts;
Ethylene glycol: 5 parts;
Stabilizing agent (calcium-zinc composite stabilizing agent and pentaerythrite composition by weight ratio are the mixture of 1:2): 4 parts;
Waterproof agent (the rational arbitrarily constructional materials waterproofing agent of organosilicon that market is directly bought): 2 parts;
Blowing agent (lauryl sodium sulfate): 1.0 parts;
Coupling agent (vinyl three tert-butyl peroxide silane): 1.2 parts;
Ultraviolet (UV) resistant agent (UV-531 ultra-violet absorber): 1.4 parts.
The length of its entirety of central layer 1 selected in the present embodiment is 570mm, and thickness is 48.8mm, is specifically described for this standard:
The quantity of the present embodiment Hole 2 is set to 14, described hole 2 is distributed in described central layer 1 uniformly, above described hole 2 arch limit apogee distance described in the distance of central layer 1 upper surface be 8mm, below described hole 2, the distance of central layer 1 soffit described in distance is also 8mm, spacing between described adjacent holes 2 is 6mm, described hole 2 vertical direction maximum height is 32.8mm, the width of described hole 2 horizontal direction is 33.5mm, and described hole 2 horizontal direction is 11.5mm apart from the distance of described central layer 1 left and right edges.
The hole 2 that in the present embodiment, central layer 1 is provided with, hole ratio is 0.537.
A kind of processing method of high strength space enclosing structure sandwiched plate, described central layer 1 preparation method is specially: prepare burden by described formula, the mixing of materials prepared stirs, the moisture content of throughout its mass is made to be 16-18%, then the material of mixing put into vacuum extractor and reduced the moisture content of 1%-2% by vacuum extractor further, extruded by extruder, namely final drying solidification can form described central layer 1 again.
The sandwiched plate of above-described embodiment, deduction hole part, the weight of product can be reduced to 8kg/m
2.Under the prerequisite ensureing product quality, the weight of product of the present utility model is lighter than conventional like product far away like this, more convenient when being used for constructing by product of the present utility model like this.
In above-described embodiment, hole 2 is above set to arch, can antigravity effect, make not form concave surface during contraction, ensure that the smooth of surface, meanwhile, two turnings below hole 2 are set to process corner, and be not set to conventional right angle, this process corner be provided with should be chamfering or fillet, and the turning of such hole 2 has certain angle, can play a supporting role, prevent deformation of products, ensure that the stability of shape of product.
In above-described embodiment, Waste Sulfuric Acid, waste phosphoric acid, hydrophosphate, magnesium oxide powder and other additive can be prepared into inorganic gel materials, its moisture content of the gel rubber material prepared is at 20-30%, when preparing core material by this gel rubber material, add mica powder again, the water content of core material entirety can be reduced, that the water content of material monolithic is reduced to 16-18%, facilitate next step processing process, the mica powder simultaneously added can also be played a supporting role, and strengthens the intensity of central layer further.
Inorganic gel materials in above-described embodiment prepares the additive mainly adding other in the Waste Sulfuric Acid of collection and the mixed liquor of waste phosphoric acid under stirring, and stir into gel state, and adding by each component of above-described embodiment, final obtained its moisture content of gel rubber material is at 20-30%.
The Waste Sulfuric Acid used in above-described embodiment and waste phosphoric acid, do not limit its field of originating in theory, the spent acid of every field can use, but, because inorganic gel materials of the present utility model is mainly in order to for constructional materials, therefore before coming into operation, need to detect the spent acid collected, whether detect in acid pickle containing radiological material, if do not have radiological material to come into operation after detecting, if containing radiological material, just cannot be used for constructional materials and use, by process, radiological material wherein must be removed.
Waste Sulfuric Acid in the utility model, its wide material sources, Waste Sulfuric Acid in the embodiment that the utility model adopts mainly derives from the sulfuric acid waste liquid used in the galvanizing process of electroplating enterprise, wherein sulfuric acid content is 10-50% effectively, except sulfuric acid is also containing materials such as zinc sulfate, ferric sulfate, sodium sulphate in this acid pickle; Waste phosphoric acid in the utility model, its source also widely, waste phosphoric acid in the embodiment that the utility model adopts mainly derives from the Phosphating Solution that iron and steel works adopt in steel parkerizing process, phosphoric acid is used in this Phosphating Solution, wherein in spent acid, the content of available phosphoric acid is 10-50%, in this acid pickle except phosphoric acid, also containing the phosphatization additive of some dihydric phosphates as zinc dihydrogen phosphate and some other routine.
In above-described embodiment sandwiched plate process in conical double screw extruder can be adopted to extrude, finally about 180-200 DEG C dry solidification again.
Sandwiched plate of the present utility model, directly can carry out extrusion cladding by the core material in above-described embodiment and metal, also can first prepare central layer according to above-described embodiment and then carry out compound with metal.
The sandwiched plate adopting the component of above-described embodiment to be prepared into is nontoxic corrosion-free, and fire line is strong, can reach 1300 degree of fire prevention, and its intensity is higher than constructional materialss such as common cement simultaneously, can be widely used in building field.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its objective is to allow and is familiar with these those skilled in the art and can understands content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalents done by the utility model Spirit Essence or modification, all should be encompassed within protection domain of the present utility model.
Claims (5)
1. a high strength space enclosing structure sandwiched plate, it is characterized in that: comprise central layer (1), in described central layer (1), horizontal direction is evenly provided with the hole (2) running through described central layer (1), and the cross section entirety of described hole (2) is rectangle, and the top of described square-section is set to arch.
2. high strength space enclosing structure sandwiched plate according to claim 1, it is characterized in that: described in the apogee distance on arch limit, described hole (2) top, the distance of central layer (1) upper surface is 4-10mm, described in the distance of described hole (2) below, the distance of central layer (1) soffit is 4-10mm, and the spacing between described adjacent holes (2) is 5-7mm.
3. high strength space enclosing structure sandwiched plate according to claim 1, is characterized in that: described hole (2) vertical direction maximum height is 30-40mm, the width of described hole (2) horizontal direction is 30-45mm.
4. high strength space enclosing structure sandwiched plate according to claim 1, is characterized in that: described hole (2) horizontal direction is 10-13mm apart from the distance of described central layer (1) left and right edges.
5. high strength space enclosing structure sandwiched plate according to claim 1, is characterized in that: the hole (2) that described central layer (1) is provided with, and the hole ratio of its entirety is 0.5-0.7.
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