CN104070717B - Chromatic steel sandwich plate and its preparation method - Google Patents
Chromatic steel sandwich plate and its preparation method Download PDFInfo
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- CN104070717B CN104070717B CN201410287489.5A CN201410287489A CN104070717B CN 104070717 B CN104070717 B CN 104070717B CN 201410287489 A CN201410287489 A CN 201410287489A CN 104070717 B CN104070717 B CN 104070717B
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Abstract
The present invention discloses a kind of chromatic steel sandwich plate and its preparation method, this chromatic steel sandwich plate comprises the first color steel, the 2nd color steel and the sandwich layer between the first color steel and described 2nd color steel, wherein, sandwich layer comprises aerosil matrix, the matrix strongthener that aerosil matrix comprises aerosil and is blended in aerosil. This chromatic steel sandwich plate is the base material using aerosil as sandwich board. Aerosil has that density is little, the advantage of light weight, and its high thermal resistance and thermal insulation are also better. Meanwhile, simultaneously containing strongthener in the sandwich layer of above-mentioned chromatic steel sandwich plate. Under the enhancement of matrix strongthener, aerosil sandwich board has good toughness, overcomes the shortcoming that existing sandwich layer fragility is big. Meanwhile, sandwich layer containing aerosil and have good cohesiveness between color steel up and down, makes chromatic steel sandwich plate of the present invention have good over-all properties concurrently.
Description
Technical field
The present invention relates to chromatic steel sandwich plate and make field, specifically, it relates to a kind of chromatic steel sandwich plate and its preparation method.
Background technology
Chromatic steel sandwich plate is made up of two formable layer metal deckings (or other material panels) and the sandwich layer between panel. Chromatic steel sandwich plate has is convenient to the advantages such as installing/dismounting, insulating energy-saving, high-strength light, appearance be attractive in appearance, extensively for industries such as building, upholstery, communications and transportation.
The core of chromatic steel sandwich plate is middle sandwich layer. Existing market exists the sandwich layer material that multiple chromatic steel sandwich plate uses, comprises the polystyrene (PS) and urethane (PU) foam, rock wool, phenol formaldehyde foam etc. that use the earliest. These materials more or less have some defects when using as sandwich layer material. Such as, rock wool has the shortcoming such as easy water suction, heat insulation effect difference; Polystyrene foam and polyurethane foam easy firing, produce toxic gas, there is potential safety hazard and make it apply and be restricted during burning; Phenol formaldehyde foam excellent fireproof performance, LSZH, weight are light, but its fragility is big, easily occur the problem of the phenol formaldehyde foam cracking caused due to metal decking distortion during life-time service.
In sum, a kind of novel sandwich layer of continual exploitation, makes chromatic steel sandwich plate have the over-all propertieies such as good heat-proof quality, toughness.
Summary of the invention
It is desirable to provide a kind of chromatic steel sandwich plate and its preparation method, to solve in prior art sandwich layer fragility height in chromatic steel sandwich plate, life-time service problem easy to crack.
In order to realize above-mentioned purpose, according to an aspect of the present invention, provide a kind of chromatic steel sandwich plate, comprise the first color steel, the 2nd color steel and the sandwich layer between the first color steel and the 2nd color steel, wherein, sandwich layer comprises aerosil matrix, the matrix strongthener that aerosil matrix comprises aerosil and is blended in aerosil.
Further, in sandwich layer, the weight ratio between aerosil matrix and matrix strongthener is 50��70:5��15; Preferred substrate strongthener is glass fibre or the silica fiber of 1��50mm.
Further, sandwich layer also comprises infrared light screening agent, it is preferable that infrared light screening agent is titanium dioxide or silicon carbide, it is more preferable to the weight ratio between aerosil matrix, matrix strongthener and infrared light screening agent is 50��70:5��15:10��30.
Further, sandwich layer also comprises the Z-direction strongthener being arranged in aerosil matrix.
Further, Z-direction strongthener is for being arranged in aerosil matrix, and the Z-direction fortifying fibre extended along the Z-direction of sandwich layer or Z-direction fortifying fibre post, Z-direction fortifying fibre post comprises fortifying fibre core layer and is coated on the resin layer of fortifying fibre core layer surface; Preferred aerosil matrix comprises multiple Z-direction fortifying fibre along Z-direction extension arranged in parallel or Z-direction fortifying fibre post;
Z-direction strongthener is the honeycomb fuse being arranged in aerosil matrix, it is preferable that the honeycomb wall of honeycomb fuse extends along the Z-direction of sandwich layer.
Further, Z-direction fortifying fibre is glass fibre, silica fiber, basalt fibre or high silica fiber; In Z-direction fortifying fibre post, fortifying fibre core layer is glass fibre or silica fiber, and resin layer is resol layer; Honeycomb fuse is frp honeycomb fuse.
Further, the diameter of Z-direction fortifying fibre and Z-direction fortifying fibre post is 0.5��2mm, and the distance between Z-direction fortifying fibre adjacent in sandwich layer or Z-direction fortifying fibre post is 3��100mm; The honeycomb wall thickness of honeycomb fuse is 0.05��1.00mm, and honeycomb aperture is 3��50cm.
Further, in chromatic steel sandwich plate, the first color steel is covered with the first tack coat on the surface near the side of sandwich layer, and/or the 2nd color steel is covered with the 2nd tack coat on the surface near the side of sandwich layer.
Further, in chromatic steel sandwich plate, Z-direction strongthener, and extends in the first tack coat or the 2nd tack coat along the two ends that Z-direction extends respectively higher than the respective surfaces of aerosil matrix.
Further, the first tack coat and the 2nd tack coat are resol adhesive layer.
According to a further aspect in the invention, provide the preparation method of a kind of chromatic steel sandwich plate, it comprises the following steps: S1, is formed and comprises the sandwich layer of aerosil matrix, the matrix strongthener that aerosil matrix contains aerosil and is blended in aerosil; S2, sandwich is placed on the first color steel and between the 2nd color steel, after compression moulding, obtains chromatic steel sandwich plate.
Further, in step S1, the step forming sandwich layer comprises: after aerosil and matrix strongthener being mixed, compacting forms aerosil matrix, is used as sandwich layer by aerosil matrix.
Further, in step S1, the step forming sandwich layer comprises: A1, aerosil and matrix strongthener are mixed after, compacting forms aerosil matrix; A2, with stitching method or puncture method Z-direction fortifying fibre or Z-direction fortifying fibre post worn along the Z-direction of sandwich layer aerosil matrix is formed Z-direction strongthener, and then form sandwich layer; In preferred steps A1, the pressure suppressed by the mixture of aerosil and matrix strongthener is 0.1��5MPa;In preferred steps A2, multiple Z-direction fortifying fibre or Z-direction fortifying fibre post are worn in the way of arranged in parallel aerosil matrix is formed Z-direction strongthener.
Further, in step S1, the step forming sandwich layer comprises: B1, aerosil and matrix strongthener are mixed after, form aerogel mixture; B2, the honeycomb hole that aerogel mixture is filled to the honeycomb fuse as Z-direction strongthener, and aerogel mixture is carried out Z-direction pressurization, form the aerosil matrix being provided with honeycomb fuse, and the aerosil matrix being provided with honeycomb fuse is used as sandwich layer; Preferably, the honeycomb wall of honeycomb fuse extends along the Z-direction of sandwich layer, and when aerogel mixture carrying out Z-direction and pressurizes, pressure is 0.1��5MPa.
Further, in step S1, by the step of aerosil and the mixing of matrix strongthener, add infrared light screening agent simultaneously and mix.
Further, in step S2, the step forming chromatic steel sandwich plate comprises: S21, apply adhesive layer to be solidified on the surface for the side being connected with sandwich layer on the first color steel with the 2nd color steel, forms first and treats that pressure color steel and the 2nd is waited to press color steel; S22, sandwich is placed on first treats pressure color steel and the 2nd and treat between pressure color steel, suppress and after making adhesive layer to be solidified solidification, obtain chromatic steel sandwich plate.
Further, in step S1, formed sandwich layer step in, when adding Z-direction strongthener so that Z-direction strongthener along the two ends that Z-direction extends respectively higher than the respective surfaces of aerosil matrix.
Further, it is characterised in that, in step S22, sandwich is placed on first wait pressing color steel and the 2nd after between pressure color steel, after utilizing vacuum bag pressure method to keep 2��10h under-0.01��0.1Mpa negative pressure, obtains chromatic steel sandwich plate.
The chromatic steel sandwich plate of application the present invention and its preparation method, above-mentioned chromatic steel sandwich plate is the base material using aerosil as sandwich board. Aerosil has that density is little, the advantage of light weight, and particularly its high thermal resistance and thermal insulation are all due to materials such as phenol formaldehyde foams. Meanwhile, simultaneously containing strongthener in the sandwich layer of above-mentioned chromatic steel sandwich plate. Under the enhancement of matrix strongthener, aerosil sandwich board has good toughness, overcomes the shortcoming that existing sandwich layer fragility is big. Meanwhile, sandwich layer containing aerosil and between color steel, there is good adhesive property up and down. Above various factors makes the above-mentioned chromatic steel sandwich plate of the present invention have good over-all properties concurrently.
Accompanying drawing explanation
The Figure of description of the part forming the application is used to provide a further understanding of the present invention, and the schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 shows the structural representation of chromatic steel sandwich plate in one embodiment of the present invention;
Fig. 2 shows the schematic diagram of sandwich layer in chromatic steel sandwich plate in one embodiment of the present invention;
Fig. 3 shows the schematic diagram of sandwich layer in chromatic steel sandwich plate in another embodiment of the present invention; And
Fig. 4 shows the structural representation of chromatic steel sandwich plate in another embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually. Below with reference to the accompanying drawings and come the present invention is described in detail in conjunction with the embodiments.
Introducing as background section, there is sandwich layer fragility height, life-time service problem easy to crack in existing chromatic steel sandwich plate.In order to address this problem, inventor provides a kind of chromatic steel sandwich plate, as shown in Figure 1, comprise the first color steel 100, the 2nd color steel 200 and the sandwich layer 300 between the first color steel 100 and the 2nd color steel 200, wherein, sandwich layer 300 comprises aerosil matrix, the matrix strongthener that aerosil matrix comprises aerosil and is blended in aerosil.
Above-mentioned chromatic steel sandwich plate provided by the present invention is the base material using aerosil as sandwich board. Aerosil has that density is little, the advantage of light weight, and particularly its high thermal resistance and thermal insulation are all better than the materials such as phenol formaldehyde foam. Meanwhile, simultaneously containing strongthener in the sandwich layer of above-mentioned chromatic steel sandwich plate. Under the enhancement of matrix strongthener, aerosil sandwich board has good toughness, overcomes the shortcoming that existing sandwich layer fragility is big. Meanwhile, sandwich layer containing aerosil and between color steel, there is good adhesive property up and down. Above various factors makes the above-mentioned chromatic steel sandwich plate of the present invention have good over-all properties concurrently.
The instruction above-mentioned according to the present invention, those skilled in the art have the ability to select in sandwich layer the consumption relation between each component. In a preferred embodiment, in sandwich layer 300, the weight ratio between aerosil matrix and matrix strongthener is 50��70:5��15; Preferred above-mentioned matrix strongthener is glass fibre or the silica fiber of 1��50mm.
In the above-mentioned sandwich layer of the present invention, taking aerosil as matrix, matrix strongthener, just can make sandwich layer 300 have good heat-proof quality and toughness in addition. In a preferred embodiment, above-mentioned sandwich layer 300 also comprises infrared light screening agent. Add infrared light screening agent to be conducive to improving sandwich layer even the heat reflection effect of chromatic steel sandwich plate, it is possible to improve the heat-proof quality of chromatic steel sandwich plate further. Preferably, above-mentioned infrared light screening agent includes but not limited to titanium dioxide or silicon carbide. More preferably, weight ratio between aerosil matrix, matrix strongthener and infrared light screening agent is 50��70:5��15:10��30. The amount ratio of each component in sandwich board is controlled in above-mentioned scope, while being conducive to making chromatic steel sandwich plate have lower production cost, has good comprehensive use properties concurrently.
In above-mentioned chromatic steel sandwich plate provided by the present invention, as long as containing matrix strongthener, the over-all properties of aerosil sandwich layer just can be improved to a certain extent. In a preferred embodiment, in above-mentioned sandwich layer 300, also comprise the Z-direction strongthener being arranged in aerosil matrix. Preferably, Z-direction strongthener is for being arranged in aerosil matrix, and the Z-direction fortifying fibre 301 extended along the Z-direction of sandwich layer or Z-direction fortifying fibre post 302, Z-direction fortifying fibre post 302 comprises fortifying fibre core layer and is coated on the resin layer of fortifying fibre core layer surface; Preferred aerosil matrix comprises multiple Z-direction fortifying fibre 301 along Z-direction extension arranged in parallel or Z-direction fortifying fibre post 302; Or, Z-direction strongthener is the honeycomb fuse 303 being arranged in aerosil matrix, it is preferable that the honeycomb wall of honeycomb fuse 303 extends along the Z-direction of sandwich layer.
" Z-direction " herein refers to the direction being perpendicular to chromatic steel sandwich plate, specifically as shown in Figure 1.Utilize Z-direction strongthener that the aerosil in sandwich layer can play the effect of enhancing further. , sandwich layer is strengthened along Z-direction meanwhile, also help the overall flexibility improving chromatic steel sandwich plate further. In actual application process, when above-mentioned Z-direction strongthener is Z-direction fortifying fibre or during Z-direction fortifying fibre post, as shown in Figure 2, in sandwich layer 300, Z-direction fortifying fibre 301 or Z-direction fortifying fibre post 302 are arranged in parallel along Z-direction in aerosil matrix. When Z-direction strongthener is the honeycomb core period of the day from 11 p.m. to 1 a.m, as shown in Figure 3, in sandwich layer 300, the honeycomb wall of honeycomb fuse 303 is parallel with the Z-direction of sandwich layer, and aerosil is filled in the honeycomb hole of honeycomb fuse.
In above-mentioned chromatic steel sandwich plate provided by the present invention, arbitrary fortifying fibre, fortifying fibre post or honeycomb fuse all can serve as the Z-direction strongthener in sandwich layer and use. In a preferred embodiment, above-mentioned Z-direction fortifying fibre is glass fibre, silica fiber, basalt fibre or high silica fiber; In Z-direction fortifying fibre post, fortifying fibre core layer is glass fibre or silica fiber, and resin layer is resol layer; Honeycomb fuse is frp honeycomb fuse. Thickness according to sandwich board and area, those skilled in the art have the ability to spread parameter in sandwich board of Z-direction fortifying fibre and Z-direction fortifying fibre post, and the concrete parameter of honeycomb fuse sets. One more preferred embodiment in, for the consideration of balance sandwich layer toughness and chromatic steel sandwich plate production cost, the diameter of above-mentioned Z-direction fortifying fibre and Z-direction fortifying fibre post is 0.5��2mm, and the distance between Z-direction fortifying fibre adjacent in sandwich layer or Z-direction fortifying fibre post is 3��100mm; The honeycomb wall thickness of honeycomb fuse is 0.05��1.0mm, and honeycomb aperture is 3��50cm. In addition, the shape of honeycomb fuse can be tetragon, pentagon and other Polygonss, it is preferable to hexagon. Hexagonal honeycomb fuse has good structural stability, and then can promote the structural stability of chromatic steel sandwich plate.
In above-mentioned chromatic steel sandwich plate provided by the present invention, as long as adding Z-direction strongthener in sandwich layer, just can significantly improve the toughness of sandwich board, and then improving the toughness of chromatic steel sandwich plate. In a preferred embodiment, as shown in Figure 4, in above-mentioned chromatic steel sandwich plate, the first color steel is covered with the first tack coat on the surface near the side of sandwich layer, and the 2nd color steel is covered with the 2nd tack coat on the surface near the side of sandwich layer. Add the first tack coat and the 2nd tack coat on the surface of sandwich layer at upper and lower two layers of color steel, two layers have better cohesiveness between tack coat and aerosil. More preferably, Z-direction strongthener, and extends in the first tack coat or the 2nd tack coat along the two ends that Z-direction extends respectively higher than the respective surfaces of aerosil matrix. Under such circumstances, the two ends of Z-direction strongthener are under the cohesive action of upper and lower two layers of tack coat, the cohesiveness between two layers of tack coat and sandwich layer can be improved further, and then improve the cohesiveness of the first color steel and the 2nd between color steel and sandwich board, make chromatic steel sandwich plate have better comprehensive use properties.
In above-mentioned chromatic steel sandwich plate provided by the present invention, the binding agent that the first tack coat and the 2nd tack coat use can be the binding agent that those skilled in the art are usual. In a preferred embodiment, above-mentioned first tack coat and the 2nd tack coat comprise for resol adhesive layer.Concrete, resol adhesive layer can arbitrary synvaren through being solidified to form. More preferably, phenolic aldehyde caking agent comprises component A and B component, and wherein component A comprises ba phenolic resin, modified epoxy, butyronitrile-40, polyvinyl butyral acetal and silane coupling agent, and B component is composite multi-component amine hardener. This kind of binding agent has the advantages such as cementability is strong, high temperature resistant, self-vulcanizing, more suitable uses as color steel binding agent.
In addition, present invention also offers the preparation method of a kind of chromatic steel sandwich plate, it comprises the following steps: S1, is formed and comprises the sandwich layer of aerosil matrix, and aerosil matrix contains aerosil and is blended in aerosil matrix strongthener; S2, sandwich is placed on the first color steel and between the 2nd color steel, after compression moulding, obtains chromatic steel sandwich plate.
In aforesaid method, first form the sandwich layer containing aerosil and matrix strongthener, then after this sandwich layer and upper and lower two layers of color steel being shelved in order, compacting forms chromatic steel sandwich plate. In this chromatic steel sandwich plate, using aerosil as matrix. Aerosil has that density is little, the advantage of light weight, and particularly its high thermal resistance and thermal insulation are all due to materials such as phenol formaldehyde foams. Meanwhile, simultaneously containing strongthener in the sandwich layer of above-mentioned chromatic steel sandwich plate. Under the enhancement of matrix strongthener, aerosil sandwich board has good toughness, overcomes the shortcoming that existing sandwich layer fragility is big. Meanwhile, sandwich layer containing aerosil and between color steel, there is good adhesive property up and down. Above various factors makes the above-mentioned chromatic steel sandwich plate of the present invention have good over-all properties concurrently.
In aforesaid method of the present invention, the sandwich layer containing aerosil and matrix strongthener can be obtained according to the method for the usual mixing of those skilled in the art, compacting. In a preferred embodiment, in above-mentioned steps S1, the step forming sandwich layer comprises: after aerosil and matrix strongthener being mixed, compacting forms aerosil matrix, is used as sandwich layer by aerosil matrix.
In a preferred embodiment, in above-mentioned steps S1, the step forming sandwich layer comprises: A1, aerosil and matrix strongthener are mixed after, compacting forms aerosil matrix (preferred pressure is 0.1��5MPa); A2, with stitching method or puncture method Z-direction fortifying fibre or Z-direction fortifying fibre post worn along the Z-direction of sandwich layer aerosil matrix is formed Z-direction strongthener, and then form sandwich layer; In preferred steps A2, multiple Z-direction fortifying fibre or Z-direction fortifying fibre post are worn in the way of arranged in parallel aerosil matrix is formed Z-direction strongthener.
In aforesaid method, first aerosil is mixed with matrix strongthener and after suppressing, form aerosil matrix. Then Z-direction fortifying fibre or Z-direction fortifying fibre post are put into aerosil matrix with the method sewed up or puncture so that it is become the sandwich layer that Z-direction strengthens. Compared to having merely aerosil and the situation of matrix strongthener, simultaneously containing Z-direction strongthener, the sandwich layer formed has higher toughness, and correspondingly, chromatic steel sandwich plate has higher toughness.In the operating process of reality, concrete sewing method and piercing method can be the methods that those skilled in the art are usual. Preferably, when Z-direction strongthener is Z-direction fortifying fibre, adopts the method sewed up that aerosil matrix is walked fibre up and down, Z-direction fortifying fibre is stitched in aerosil matrix, and then form sandwich layer. When Z-direction strongthener is Z-direction fortifying fibre post, owing to fibre columns has certain rigidity, and aerosil matrix itself is softer, it is possible to directly adopt the method for puncture to wear Z-direction fortifying fibre post into aerosil matrix, and then form sandwich layer.
In aforesaid method of the present invention, Z-direction strongthener can be Z-direction fortifying fibre as the aforementioned or Z-direction fortifying fibre post. In addition, it is also possible to be honeycomb fuse. In a preferred embodiment, in above-mentioned steps S1, the step forming sandwich layer comprises: B1, aerosil and matrix strongthener are mixed after, form aerogel mixture; B2, the honeycomb hole that aerogel mixture is filled to the honeycomb fuse as Z-direction strongthener, and aerogel mixture is carried out Z-direction pressurization, preferred pressure is 0.1��5MPa, form the aerosil matrix being provided with honeycomb fuse, and the aerosil matrix being provided with honeycomb fuse is used as sandwich layer; Preferably, the honeycomb wall of honeycomb fuse extends along the Z-direction of sandwich layer.
After aerosil and the mixing compacting of matrix strongthener, it is filled in the honeycomb hole of honeycomb fuse, forms sandwich layer. By aerosil and the mixing compacting of matrix strongthener, it is possible to make the mixture of aerosil and matrix strongthener be in the state of compacting. After this mixture of compacting is filled to the honeycomb hole of honeycomb fuse, the sandwich layer obtained has better heat-proof quality and toughness, and then is conducive to improving further the comprehensive use properties of chromatic steel sandwich plate.
In aforesaid method provided by the present invention, being undertaken mixing compacting by aerosil and matrix strongthener, namely the sandwich layer obtained after subsequent technique has higher over-all properties. In a preferred embodiment, in above-mentioned steps S1, by the step of aerosil and the mixing of matrix strongthener, add infrared light screening agent simultaneously and mix. Add infrared light screening agent and can improve sandwich layer to the reflex action of heat, and then the heat-proof quality of whole chromatic steel sandwich plate can be improved.
In aforesaid method of the present invention, suppressing as long as sandwich being placed between the first color steel and the 2nd color steel, just can obtain the higher chromatic steel sandwich plate of over-all properties. In a preferred embodiment, in above-mentioned steps S2, the step forming chromatic steel sandwich plate comprises: S21, apply adhesive layer to be solidified on the surface for the side being connected with sandwich layer on the first color steel with the 2nd color steel, forms first and treats that pressure color steel and the 2nd is waited to press color steel; S22, sandwich is placed on first treats pressure color steel and the 2nd and treat between pressure color steel, suppress and after making adhesive layer to be solidified solidification, obtain chromatic steel sandwich plate. The binding agent that preferred adhesive layer to be solidified adopts is phenol-formaldehyde binders. More preferably, in step S1, formed sandwich layer step in, when adding Z-direction strongthener so that Z-direction strongthener along the two ends that Z-direction extends respectively higher than the respective surfaces of aerosil matrix.Specifically, with stitching method or puncture method, Z-direction fortifying fibre or Z-direction fortifying fibre post are worn in the process of aerosil matrix, outside making the two ends of Z-direction fortifying fibre or Z-direction fortifying fibre post be exposed to aerosil matrix; Or, after aerosil and matrix strongthener are mixed, it is filled in the process of honeycomb hole of honeycomb fuse, outside making the mixture layer that the lower edges of honeycomb core sub-honeycomb wall is exposed to aerosil and matrix strongthener. Under such circumstances, the two ends of Z-direction strongthener are under the cohesive action of upper and lower two layers of tack coat, the cohesiveness between two layers of tack coat and sandwich layer can be improved further, and then improve the cohesiveness of the first color steel and the 2nd between color steel and sandwich board, make chromatic steel sandwich plate have better comprehensive use properties. In the process of actually operating, the stitching method walking fibre up and down is adopted Z-direction fortifying fibre or Z-direction fortifying fibre post to be stitched after in aerosil matrix, two Z-direction fortifying fibres in aerosil matrix upper and lower surface or the joint between Z-direction fortifying fibre post can be cut off, so that the termination of every root Z-direction fortifying fibre or Z-direction fortifying fibre post is exposed, and submerge in pressing process subsequently in the first tack coat or the 2nd tack coat.
The instruction above-mentioned according to the present invention, those skilled in the art have the ability to select compacting to form the technique of chromatic steel sandwich plate. Thickness according to required color steel and density, pressing process can also adjust. In a preferred embodiment, in upper step S22, sandwich is placed on first wait pressing color steel and the 2nd after between pressure color steel, after utilizing vacuum bag pressure method to keep 2��10h under-0.01��-0.1Mpa negative pressure, obtains chromatic steel sandwich plate. " vacuum bag pressure method " after pressure chromatic steel sandwich plate seals, the air in vacuum pump vacuum bag will be utilized to form negative pressure by vacuum bag, thus reaches the object treated pressure chromatic steel sandwich plate and carry out pressurizeing. This kind of method can make to wait that the pressure pressing chromatic steel sandwich plate to bear is more even so that it is has better adhesive property between layers. In addition, aforesaid method of the present invention adopts the first color steel and the 2nd color steel can be arbitrary color steels. Preferably, the thickness of the first color steel and the 2nd color steel is 0.5��0.8mm.
The present invention being described in further detail below in conjunction with specific embodiment, these embodiments can not be interpreted as the scope that restriction the present invention is claimed.
Embodiment 1
70:10:20 takes aerosil powder, silica fiber (length is 50mm) and infrared light screening agent 360g altogether respectively in mass ratio, infrared light screening agent and silica fiber are joined in aerosil powder and is uniformly mixed, obtain mixture;
Mixture is loaded mold cavity, mold cavity is rectangular parallelepiped (long 300mm �� wide 100mm �� thick 20mm), the pressure that plate on mould applies 5MPa makes mould close mould, is detachable mould and obtains aerosil matrix (long 300mm �� wide 100mm �� thick 20mm) after closing mould;
Utilize puncture method, by the Z-direction fortifying fibre post (core layer is glass fibre, and resinous layer material is resol) that diameter is 0.5mm, it is through in above-mentioned aerosil matrix according to the spacing of 10mm, and come out in the two ends up and down making fibre columns, form sandwich layer;
Prepare the first color steel and the 2nd color steel that thickness is 0.5mm, and at two color steels for applying one layer of phenol-formaldehyde binders respectively on the surface of sandwich layer, form first and treat that pressure color steel and the 2nd treats pressure color steel;
Above-mentioned sandwich is placed on first and treats that pressure color steel and the 2nd is treated to load vacuum bag between pressure color steel;Air to the negative pressure extracted out in vacuum bag is-0.1Mpa, and shelves 2h at 25 DEG C of temperature, namely obtains chromatic steel sandwich plate.
Embodiment 2
50:5:10 takes aerosil powder, silica fiber (length is 50mm) and infrared light screening agent 360g altogether respectively in mass ratio, infrared light screening agent and silica fiber are joined in aerosil powder and is uniformly mixed, obtain mixture;
Mixture is loaded mold cavity, mold cavity is rectangular parallelepiped (long 300mm �� wide 100mm �� thick 20mm), the pressure that plate on mould applies 5MPa makes mould close mould, is detachable mould and obtains aerosil matrix (long 300mm �� wide 100mm �� thick 20mm) after closing mould;
Utilize stitching method, by the Z-direction fortifying fibre (silica fiber) that diameter is 2mm, it is through in above-mentioned aerosil matrix according to the spacing of 100mm, and outside the two ends up and down making silica fiber are exposed to aerosil matrix, forms sandwich layer;
Prepare the first color steel and the 2nd color steel that thickness is 0.5mm, and at two color steels for applying one layer of phenol-formaldehyde binders respectively on the surface of sandwich layer, form first and treat that pressure color steel and the 2nd treats pressure color steel;
Above-mentioned sandwich is placed on first and treats that pressure color steel and the 2nd is treated to load vacuum bag between pressure color steel; Air to the negative pressure extracted out in vacuum bag is-0.1Mpa, and shelves 2h at 25 DEG C of temperature, namely obtains chromatic steel sandwich plate.
Embodiment 3
70:15:30 takes aerosil powder, silica fiber (length is 50mm) and infrared light screening agent 360g altogether respectively in mass ratio, infrared light screening agent and silica fiber are joined in aerosil powder and is uniformly mixed, obtain mixture;
Mixture is loaded mold cavity, and the pressure that plate on mould applies 0.1MPa makes mould close mould, is detachable mould, obtains the mixture of compacting after closing mould;
(honeycomb wall thickness is 0.05mm to prepare frp honeycomb fuse, honeycomb aperture is 50cm, honeycomb hole shape is hexagon, honeycomb thickness is 20mm), said mixture is filled in honeycomb hole, suppress under 0.5Mpa, and come out in the two ends up and down making honeycomb wall, core layer sandwich layer;
Prepare the first color steel and the 2nd color steel that thickness is 0.8mm, and at two color steels for applying one layer of phenol-formaldehyde binders respectively on the surface of sandwich layer, form first and treat that pressure color steel and the 2nd treats pressure color steel;
Above-mentioned sandwich is placed on first and treats that pressure color steel and the 2nd is treated to load vacuum bag between pressure color steel; Air to the negative pressure extracted out in vacuum bag is-0.1Mpa, and shelves 10h at 25 DEG C of temperature, namely obtains chromatic steel sandwich plate.
Embodiment 4
50:4:8 takes aerosil powder, silica fiber (length is 1mm) and infrared light screening agent 360g altogether respectively in mass ratio, infrared light screening agent and silica fiber are joined in aerosil powder and is uniformly mixed, obtain mixture;
Mixture is loaded mold cavity, and the pressure that plate on mould applies 0.1MPa makes mould close mould, is detachable mould, obtains the mixture of compacting after closing mould;
(honeycomb wall thickness is 1mm to prepare frp honeycomb fuse, honeycomb aperture is 3cm, honeycomb hole shape is hexagon, honeycomb thickness is 20mm), said mixture is filled in honeycomb hole, suppress under 0.5Mpa, and the two ends up and down making honeycomb wall are concordant with the mixture of filling, core layer sandwich layer;
Prepare the first color steel and the 2nd color steel that thickness is 0.8mm, above-mentioned sandwich is placed on first and treats that pressure color steel and the 2nd is treated to load vacuum bag between pressure color steel;Air to the negative pressure extracted out in vacuum bag is-0.1Mpa, and shelves 10h at 25 DEG C of temperature, namely obtains chromatic steel sandwich plate.
Embodiment 5
50:5 takes aerosil powder, silica fiber (length is 50mm) 360g altogether respectively in mass ratio, is joined by silica fiber in aerosil powder and is uniformly mixed, obtains mixture;
Mixture is loaded mold cavity, mold cavity is rectangular parallelepiped (long 300mm �� wide 100mm �� thick 20mm), the pressure that plate on mould applies 0.1MPa makes mould close mould, is detachable mould and obtains sandwich layer (long 300mm �� wide 100mm �� thick 20mm) after closing mould;
Prepare the first color steel and the 2nd color steel that thickness is 0.5mm, above-mentioned sandwich is placed on first and treats that pressure color steel and the 2nd is treated to load vacuum bag between pressure color steel; Air to the negative pressure extracted out in vacuum bag is-0.1Mpa, and shelves 10h at 25 DEG C of temperature, namely obtains chromatic steel sandwich plate.
Embodiment 6
70:15 takes aerosil powder, silica fiber (length is 50mm) 360g altogether respectively in mass ratio, is joined by silica fiber in aerosil powder and is uniformly mixed, obtains mixture;
Mixture is loaded mold cavity, mold cavity is rectangular parallelepiped (long 300mm �� wide 100mm �� thick 20mm), the pressure that plate on mould applies 5MPa makes mould close mould, is detachable mould and obtains sandwich layer (long 300mm �� wide 100mm �� thick 20mm) after closing mould;
Prepare the first color steel and the 2nd color steel that thickness is 0.5mm, above-mentioned sandwich is placed on first and treats that pressure color steel and the 2nd is treated to load vacuum bag between pressure color steel; Air to the negative pressure extracted out in vacuum bag is-0.1Mpa, and shelves 2h at 25 DEG C of temperature, namely obtains chromatic steel sandwich plate.
Embodiment 7
50:16 takes aerosil powder, silica fiber (length is 50mm) 360g altogether respectively in mass ratio, is joined by silica fiber in aerosil powder and is uniformly mixed, obtains mixture;
Mixture is loaded mold cavity, mold cavity is rectangular parallelepiped (long 300mm �� wide 100mm �� thick 20mm), the pressure that plate on mould applies 0.05MPa makes mould close mould, is detachable mould and obtains sandwich layer (long 300mm �� wide 100mm �� thick 20mm) after closing mould;
Prepare the first color steel and the 2nd color steel that thickness is 0.5mm, above-mentioned sandwich is placed on first and treats that pressure color steel and the 2nd is treated to load vacuum bag between pressure color steel; Air to the negative pressure extracted out in vacuum bag is-0.005Mpa, and shelves 1h at 25 DEG C of temperature, namely obtains chromatic steel sandwich plate.
Comparative example 1
This comparative example has prepared phenol formaldehyde foam chromatic steel sandwich plate, and concrete technical process is as follows:
50:1:4:5 takes resol, tensio-active agent tween-80,24g whipping agent Skellysolve A and 30g acid as curing agent toluenesulphonic acids respectively in mass ratio, amount to 360g, tween-80, Skellysolve A and toluenesulphonic acids are joined in resol successively, and stir evenly with revolving stirrer, rotating speed controls to obtain liquid mixture at 100��500r/min;
Said mixture is poured into (300mm �� wide 100mm �� thick 20mm) in mold cavity, close mould and be placed on the interior 10��30min that foams at 130 DEG C of baking oven. Treating that mould furnace cooling is to 25 DEG C, namely dismounting mould obtains phenolic foam sandwich layer (long 300mm �� wide 100mm �� thick 20mm);
Above-mentioned sandwich is placed on that thickness is 0.5mm between the first color steel and the 2nd color steel, load vacuum bag;Air to the negative pressure extracted out in vacuum bag is-0.1Mpa, and shelves 2h at 25 DEG C of temperature, namely obtains chromatic steel sandwich plate.
The chromatic steel sandwich plate prepared in above-described embodiment 1 to 7 and comparative example 1 is carried out performance characterization.
Characterizing method:
1) thermal conductivity: adopt GB/T3399-1982 plastics thermal conductivity test method to protect flat plate heat method and the thermal conductivity of the chromatic steel sandwich plate prepared in embodiment 1 to 7 and comparative example 1 is characterized;
2) ultimate compression strength: adopt the measuring method of GB/T8813-2008 rigid foam compression performance the ultimate compression strength of the chromatic steel sandwich plate prepared in embodiment 1 to 7 and comparative example 1 to be characterized;
3) high thermal resistance: adopt GB/T5989 2008 refractory materials refractoriness under load test method the high thermal resistance of the chromatic steel sandwich plate prepared in embodiment 1 to 7 and comparative example 1 to be characterized;
4) flame retardant resistance: adopt GB/T2406-1993 plastics combustibility test method oxygen index method the flame retardant resistance of the chromatic steel sandwich plate prepared in embodiment 1 to 7 and comparative example 1 to be characterized;
5) density: adopt the measuring method of GBT6343-2009 porous plastics and rubber apparent density the density of the chromatic steel sandwich plate prepared in embodiment 1 to 7 and comparative example 1 to be characterized; Characterization result is as shown in table 1.
Table 1
From above data it may be seen that the while that chromatic steel sandwich plate light weight prepared the above embodiment of the present invention 1 to 7, thermal insulation being good, have more excellent resistance to elevated temperatures and compressive property;
More special, the chromatic steel sandwich plate prepared by the above embodiment of the present invention 1 to 3, is provided with tack coat between color steel and sandwich layer so that it has more excellent over-all properties.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a chromatic steel sandwich plate, the sandwich layer (300) comprising the first color steel (100), the 2nd color steel (200) and be positioned between described first color steel (100) and described 2nd color steel (200), it is characterized in that, described sandwich layer (300) comprises aerosil matrix, the matrix strongthener that described aerosil matrix comprises aerosil and is blended in described aerosil; Described sandwich layer (300) also comprises the Z-direction strongthener being arranged in described aerosil matrix, described Z-direction strongthener is for being arranged in described aerosil matrix, and the Z-direction fortifying fibre (301) extended along the Z-direction of described sandwich layer (300) or Z-direction fortifying fibre post (302), described Z-direction fortifying fibre post (302) comprises fortifying fibre core layer and is coated on the resin layer of described fortifying fibre core layer surface;
Wherein, in described chromatic steel sandwich plate, described first color steel (100) is covered with the first tack coat (101) on the surface near the side of described sandwich layer (300), and/or described 2nd color steel (200) is covered with the 2nd tack coat (201) on the surface near the side of described sandwich layer (300); Described Z-direction strongthener respectively higher than the respective surfaces of described aerosil matrix, and extends in described first tack coat (101) or described 2nd tack coat (201) along the two ends that Z-direction extends;And described first tack coat (101) and described 2nd tack coat (201) are resol adhesive layer.
2. chromatic steel sandwich plate according to claim 1, it is characterised in that, in described sandwich layer (300), the weight ratio between described aerosil matrix and described matrix strongthener is 50��70:5��15.
3. chromatic steel sandwich plate according to claim 2, it is characterised in that, described matrix strongthener is glass fibre or the silica fiber of 1��50mm.
4. chromatic steel sandwich plate according to claim 1, it is characterised in that, described sandwich layer (300) also comprises infrared light screening agent.
5. chromatic steel sandwich plate according to claim 4, it is characterised in that, described infrared light screening agent is titanium dioxide or silicon carbide.
6. chromatic steel sandwich plate according to claim 5, it is characterised in that, the weight ratio between described aerosil matrix, described matrix strongthener and described infrared light screening agent is 50��70:5��15:10��30.
7. chromatic steel sandwich plate according to claim 1, it is characterized in that, described aerosil matrix comprises multiple described Z-direction fortifying fibre (301) along Z-direction extension arranged in parallel or described Z-direction fortifying fibre post (302).
8. chromatic steel sandwich plate according to claim 7, it is characterised in that, described Z-direction fortifying fibre (301) is glass fibre, silica fiber, basalt fibre or high silica fiber; In described Z-direction fortifying fibre post (302), described fortifying fibre core layer is glass fibre or silica fiber, and described resin layer is resol layer.
9. chromatic steel sandwich plate according to claim 7, it is characterised in that,
The diameter of described Z-direction fortifying fibre (301) and described Z-direction fortifying fibre post (302) is 0.5��2mm, and the distance between described Z-direction fortifying fibre (301) adjacent in described sandwich layer (300) or described Z-direction fortifying fibre post (302) is 3��100mm.
10. the preparation method of a chromatic steel sandwich plate, it is characterised in that, comprise the following steps:
S1, formed and comprise the sandwich layer of aerosil matrix, the matrix strongthener that described aerosil matrix contains aerosil and is blended in described aerosil;
S2, described sandwich is placed between the first color steel and the 2nd color steel, after compression moulding, obtains described chromatic steel sandwich plate;
In described step S1, the step forming described sandwich layer comprises:
A1, described aerosil and described matrix strongthener are mixed after, compacting forms described aerosil matrix;
A2, with stitching method or puncture method Z-direction fortifying fibre or Z-direction fortifying fibre post worn in described aerosil matrix along the Z-direction of described sandwich layer and form Z-direction strongthener, and when adding described Z-direction strongthener, make described Z-direction strongthener along the two ends that Z-direction extends respectively higher than the respective surfaces of described aerosil matrix, and then form described sandwich layer;
In described step S2, the step forming described chromatic steel sandwich plate comprises:
S21, on described first color steel with described 2nd color steel, apply adhesive layer to be solidified on the surface for the side being connected with described sandwich layer, form first and treat that pressure color steel and the 2nd treats pressure color steel;
S22, described sandwich is placed on first treats pressure color steel and the 2nd and treat between pressure color steel, suppress and after making the solidification of described adhesive layer to be solidified, obtain described chromatic steel sandwich plate.
11. preparation methods according to claim 10, it is characterised in that, in described steps A 1, the pressure suppressed by the mixture of described aerosil and described matrix strongthener is 0.1��5MPa; In described steps A 2, multiple Z-direction fortifying fibre or Z-direction fortifying fibre post are worn in described aerosil matrix in the way of arranged in parallel and forms Z-direction strongthener.
12. preparation methods according to claim 10 or 11, it is characterised in that, in described step S1, by the step of described aerosil and the mixing of described matrix strongthener, add infrared light screening agent simultaneously and mix.
13. preparation methods according to claim 10, it is characterized in that, in described step S22, described sandwich is placed on first until pressure color steel and the 2nd wait pressing after between color steel, after utilizing vacuum bag pressure method to keep 2��10h under-0.01��-0.1Mpa negative pressure, obtain described chromatic steel sandwich plate.
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| CN102930862B (en) * | 2012-09-28 | 2014-12-10 | 中国船舶重工集团公司第七二五研究所 | Z-direction enhanced underwater sound absorption sandwich composite material and preparation method for same |
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| CN1749214A (en) * | 2005-08-01 | 2006-03-22 | 中国人民解放军国防科学技术大学 | Aerogel heat insulation composite material and its preparing method |
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