CN104818798A - Thermal protection composite panel and preparation method thereof - Google Patents
Thermal protection composite panel and preparation method thereof Download PDFInfo
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- CN104818798A CN104818798A CN201510260544.6A CN201510260544A CN104818798A CN 104818798 A CN104818798 A CN 104818798A CN 201510260544 A CN201510260544 A CN 201510260544A CN 104818798 A CN104818798 A CN 104818798A
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Abstract
The invention provides a method for preparing a thermal protection composite panel. The method for preparing the thermal protection composite panel comprises the following steps: (A) connecting transverse and longitudinal cross pre-stressed reinforcements inside a metal framework so as to obtain a pre-stressed reinforcing mesh layer, laying the first glass fiber gridding cloth at one side of the pre-stressed reinforcing mesh layer, arranging the first glass fiber gridding cloth inside the metal framework, and pouring cement mortar into the first glass fiber gridding cloth; and (B) connecting a truss to the other side of the pre-stressed reinforcing mesh, pouring foaming cement into the truss, laying the second glass fiber gridding cloth, thereby obtaining the thermal protection composite panel, wherein the foaming cement is prepared by foaming cement and a liquid composite foaming agent. According to the method disclosed by the invention, the pre-stressed reinforcing mesh, the truss and the glass fiber gridding cloth are arranged in the thermal protection composite panel, so that the bearing capacity, the toughness and the impact resistance of the thermal protection composite panel are improved, and due to the liquid composite foaming agent, the thermal protection core material has good thermal protection and heat insulation properties and lightweight.
Description
Technical field
The present invention relates to composite panel technical field, particularly relate to a kind of thermal insulating composite panel and preparation method thereof.
Background technology
Architectural exterior-protecting construction power-saving technology is one of important directions of countries in the world building energy conservations research, and development high-performance building space enclosing structure heat insulating material, goods and system thereof are the keys realizing building energy conservation, and energy-conservation focuses on wall thermal insulating.The common feature of light building material industry development is: energy-conservation, save land, low stain, lightweight, high strength, supporting, be easy to construct and the low road for development of labour intensity.
Point out in State Council's " decision about accelerating cultivation and development strategy new industry ", emerging strategic industries is the important force guiding future economy social development, and development strategy new industry has become the Major Strategic that Main Countries seizes new round economy and development in science and technology lofty perch.At the end of 2015, the cities and towns new building of 20% need reach green building standard-required.Novel wall material is gradually to lighting, high strengthening, Composite Development, and the multi-functional composite integrated novel wall material of therefore energy-saving heat preserving, high strength/fire proof, the useless environmental protection of profit is by further Application and Development.Through the development of nearly 30 years, China's light building material industry became the complete emerging industry of a variety protection.But in kind, ability to provide the auxiliary items, resources and energy consumption, resource circulation utilization, environmental protection etc., still there is gap with developed country.The most structure of current building roof sheet material used is simple, and performance is single, be difficult to reach combination property superior, economize on resources, the requirement of environmental protection and waste utilization, constructability.
Summary of the invention
The technical problem that the present invention solves is to provide good thermal insulating composite panel of a kind of combination property and preparation method thereof.
In view of this, this application provides a kind of preparation method of thermal insulating composite panel, comprise the following steps:
A), the prestressed reinforcement that transverse and longitudinal is intersected is connected in metal framework inside, obtain prestress steel rib net layer, the first fiberglass gridding cloth is laid in the side of prestress steel rib net layer, make the first fiberglass gridding cloth inner at metal framework, then in described first fiberglass gridding cloth, pour cement mortar into;
B), at the opposite side truss frame for connecting of prestressed reinforcement net, in described truss, pour foam cement into, re-lay the second fiberglass gridding cloth, obtain thermal insulating composite panel;
Described foam cement is obtained through foaming by cement and liquid composite foamable agent.
Preferably, steps A) also comprise afterwards:
The 3rd fiberglass gridding cloth is laid on described cement mortar surface.
Preferably, step C) in also comprise after laying second fiberglass gridding cloth:
Described second fiberglass gridding cloth lays the 4th fiberglass gridding cloth.
Preferably, also comprise in macromolecule both sexes foam stabilizer, auxiliary agent and polypropylene fibre in described foam cement one or more.
Preferably, described liquid composite foamable agent comprises lauryl sodium sulfate, alkylpolyoxyethylene, saponin and hydrolyzed vegetable protein; Described macromolecule both sexes foam stabilizer is one or more in modification calcium stearate, gelatin, fatty acid distribution of coconut oil diglycollic amide and nonionic cellulose ether; Described auxiliary agent is one or both in polyethylene glycol and acrylate.
Present invention also provides a kind of thermal insulating composite panel, comprising:
Metal framework;
Be arranged at the compound insulating material layer of metal framework inside, described compound insulating material layer comprises the cement mortar backing layer, foaming cement thermal insulation core layer and the foam cement surface layer that set gradually;
The first fiberglass gridding cloth is provided with in described cement mortar backing layer;
Be provided with prestress steel rib net layer and truss in described foaming cement thermal insulation core layer, described prestress steel rib net layer and truss are connected on described metal framework;
The second fiberglass gridding cloth is provided with in described foam cement surface layer;
Described foam cement is obtained through foaming by cement and liquid composite foamable agent.
Preferably, also comprise in macromolecule foam stabilizer, auxiliary agent, polypropylene fibre, flyash and slag in described foam cement one or more.
Preferably, the liquid composite foamable agent of described liquid composite foamable agent comprises lauryl sodium sulfate, alkylpolyoxyethylene sodium sulphate, saponin and hydrolyzed vegetable protein; Described macromolecule both sexes foam stabilizer is one or more in modification calcium stearate, gelatin, fatty acid distribution of coconut oil diglycollic amide and nonionic cellulose ether; Described auxiliary agent is one or both in polyethylene glycol and acrylate.
Preferably, be provided with the 3rd fiberglass gridding cloth between described backing layer and described heat insulation core material layer, described surface layer arranges the 4th fiberglass gridding cloth away from described heat insulation core material layer end.
Preferably, described metal framework is nickel plating steel framework, zinc-plated steel framework, aluminium alloys steel framework or magnadure steel framework.
This application provides a kind of thermal insulating composite panel and preparation method thereof.The thermal insulating composite panel of the application, owing to being provided with the first glass fiber reticular cloth and the second glass fiber reticular cloth, preferentially enhances resistance to compression and the shock resistance of thermal insulating composite panel; Because the liquid composite foamable agent that adopts in the heat insulation core material layer that heat-preserving complex material layer is arranged makes bubble wall more closely knit, make the heat-insulating property of thermal insulating composite panel and compressive strength higher; And the prestressed reinforcement net arranged in thermal insulating composite panel, decrease the cracking that foam concrete and metal framework cause due to stress reason, and can disperse, from the stress of the different generation of the coefficient of expansion eliminated between core layer and different materials, to make the performance of thermal insulating composite panel more even.In sum, the thermal insulating composite panel combination property that provides of the application is better.
Accompanying drawing explanation
Fig. 1 is the sectional view of thermal insulating composite panel of the present invention;
Fig. 2 is the top view of thermal insulating composite panel of the present invention.
Detailed description of the invention
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The embodiment of the invention discloses a kind of preparation method of thermal insulating composite panel, comprise the following steps:
A), the prestressed reinforcement that transverse and longitudinal is intersected is connected in metal framework inside, obtain prestress steel rib net layer, the first fiberglass gridding cloth is laid in the side of prestress steel rib net layer, make the first fiberglass gridding cloth inner at metal framework, then in described first fiberglass gridding cloth, pour cement mortar into;
B), at the opposite side truss frame for connecting of prestressed reinforcement net, in described truss, pour foam cement into, re-lay the second fiberglass gridding cloth, obtain thermal insulating composite panel;
Described foam cement is obtained through foaming by cement and liquid composite foamable agent.
This application provides a kind of preparation method of thermal insulating composite panel.In the process preparing thermal insulating composite panel, first prepare metal framework, described metal framework can be the metal framework be welded together to form by the metal frame of different length, and it can be the special polygons such as rectangle, square or arch.Metal framework described in the application can be nickel plating steel framework, zinc-plated steel framework, and also can be aluminium alloys steel framework, magnadure steel framework, can be also corrosion-proof lightweight steel framework, the application has no particular limits; But under the prerequisite meeting quality requirement, in order to save cost, the application preferably adopts the anti-corrosion steel framework of nickel plating, simultaneously in order to alleviate total quality, described metal framework is hollow metal framework.After metal framework prepares, the application then connects prestressed reinforcement in metal framework inside, and the laying of described prestressed reinforcement is based on metal framework, is parallel to metal framework and lays.The application lays prestressed reinforcement and it can be made to disperse and slowly eliminate the stress and unbalanced stress that produce because the coefficient of expansion between core drying shrinkage and different materials is different in thermal insulating composite panel, simultaneously prestressed reinforcement connection metal framework, can reduce the cracking that concrete and metal framework cause due to stress reason.Described in the application, the diameter of prestressed reinforcement is preferably 3 ~ 6mm.
According to the present invention, after prestressed reinforcement has been laid, the application is then metal framework is inner and first floor fiberglass gridding cloth is laid in prestressed reinforcement net side, and the application lays fiberglass gridding cloth and can disperse stressed and play the effect of connecting framework in thermal insulating composite panel.Then in described first fiberglass gridding cloth, pour cement mortar into, make described cement mortar be layed in described prestressed reinforcement bottom, to strengthen the impervious of composite insulation boards and hydrophobicity performance.Described cement mortar is preferably ferric aluminium sulfate rapid setting cement, and described cement mortar partly can infiltrate fiberglass gridding cloth, makes fiberglass gridding cloth be arranged at described cement mortar inner.In order to make thermal insulating composite panel have better bearing capacity, the application preferably lays the 3rd fiberglass gridding cloth at cement mortar surface course.
The application is then at the opposite side truss frame for connecting of prestressed reinforcement net, and described truss can make metal framework, heat insulation core material layer, surface layer and backing layer connect as one, and strengthens whole compressive strength and load-carrying properties.Truss described in the application is well known to those skilled in the art, no longer illustrates herein.
According to the present invention, then foam cement is poured in described truss, form foam cement sandwich layer and heat preservation core layer.Described foam cement is prepared according to following step:
By liquid composite foamable agent and cement mixing, after stirring, obtain foam cement.
In the process preparing foam cement, the application preferably with the addition of the trade wastes such as flyash, slag, silicon ash, and it can improve concrete core performance after exciting, and the utilization of above-mentioned trade waste effectively can reduce cost of production.The application preferably adds polypropylene fibre, and it effectively can increase the toughness of concrete core, intensity and shock resistance, effectively reduces the generation of the situations such as cracking.In order to improve the performance of heat insulation core material layer, the application also comprises macromolecule foam stabilizer and composite assistant in the process preparing foam cement.
Above-mentioned liquid composite foamable agent preferably adopts liquid composite foamable agent soluble in water, it can reduce the impact of surfactant on hydrated cementitious process, on the basis of physical blowing, carry out chemical blowing simultaneously, extruding can be produced to original bubble wall construction, make bubble wall more closely knit, also optimize bubble diameter grating simultaneously, make cystosepiment have higher performance.Described liquid composite foamable agent preferably includes neopelex, alkylpolyoxyethylene, saponin and hydrolyzed vegetable protein.Also comprise in lauryl sodium sulfate, alkylpolyoxyethylene sodium sulphate and Brij 35 sodium sulphate in described liquid composite foamable agent one or more.
Described macromolecule both sexes foam stabilizer can be used for improving foam stability, can form monolayer in gas-liquid face.Described macromolecule foam stabilizer be preferably in modification calcium stearate, gelatin, fatty acid distribution of coconut oil diglycollic amide and nonionic cellulose ether one or more.
Described composite assistant can Concrete Structure foamed elastic, reduces the cracking that concrete foam causes due to extruding etc., promotes the formation of closed pore.Described composite assistant is preferably the cement such as polyethylene glycol, acrylate flexibilizer and other auxiliary agent.
Described in the application, during foam cement foaming, the proportioning of liquid composite foamable agent, macromolecule both sexes foam stabilizer and composite assistant is also very important for the impact of heat preservation core layer.
As preferably, foam stabilizer modified hard acid calcium joins in cementitious material in advance and mixes, and its volume is the 0.5wt% ~ 1.7wt% of finished ground cement, and described cementitious material comprises cement, also comprises flyash and slag powders, silicon is grey.
In liquid composite foamable agent, the mass ratio of lauryl sodium sulfate and neopelex is preferably 3:1 ~ 1:1; The mass ratio of alkylpolyoxyethylene sodium sulphate, Brij 35 sodium sulphate and alkylpolyoxyethylene is preferably (1 ~ 3): (1 ~ 3): (4 ~ 8); The mass ratio of saponin and hydrolyzed vegetable protein is preferably (2:1) ~ (1:4); The ratio of the gross mass of the gross mass of lauryl sodium sulfate and neopelex and saponin and hydrolyzed vegetable protein is preferably 1:2 ~ 1:7; The ratio of the gross mass of the gross mass of lauryl sodium sulfate and neopelex and alkylpolyoxyethylene sodium sulphate, Brij 35 sodium sulphate and alkylpolyoxyethylene is preferably 1:1 ~ 1:2.Macromolecule foam stabilizer addition content is 0.04% ~ 0.06% of cementitious material quality.Composite assistant comprises the cement such as polyethylene glycol and esters of acrylic acid flexibilizer and other auxiliary agents, and wherein composite assistant addition content is 0.3% ~ 1.8% of cementitious material quality.
Second layer fiberglass gridding cloth is then laid build foam cement in metal framework after.Preferably, by after foam cement compacting after foam cement has foamed, then four-layer glass fibrous mesh cloth has been laid.
Present invention also provides a kind of thermal insulating composite panel, comprising:
Metal framework;
Be arranged at the compound insulating material layer of metal framework inside, described compound insulating material layer comprises the cement mortar backing layer, foaming cement thermal insulation core layer and the foam cement surface layer that set gradually;
The first fiberglass gridding cloth is provided with in described cement mortar backing layer;
Be provided with prestress steel rib net layer and truss in described foaming cement thermal insulation core layer, described prestress steel rib net layer and truss are connected on described metal framework;
The second fiberglass gridding cloth is provided with in described foam cement surface layer;
Described foam cement is obtained through foaming by cement and liquid composite foamable agent.
As shown in Figure 1, Fig. 1 is the structural representation of thermal insulating composite panel of the present invention, and in figure, 1 is protuberance or draw-in groove, 2 is metal framework, and 3 is closely knit foam cement surface layer, and 4 is the first fiberglass gridding cloth, 4 ＇ are the second fiberglass gridding cloth, 5 is heat insulation core material layer, and 6 is built-in connecting ring, and 7 is girder-embedded, 8 is backing layer, 9 is plated film steel mesh reinforcement, and 10 is hole for hoist, and 11 is prestressed reinforcement.
Concave design can be adopted, to strengthen the fixation degree of compound insulating material layer inside metal framework 2 described in the application; Described metal framework 2 can be nickel plating steel framework, zinc-plated steel framework, and also can be aluminium alloys steel framework, magnadure steel framework, can be also corrosion-proof lightweight steel framework, the application has no particular limits; But under the prerequisite meeting quality requirement, in order to save cost, the application preferably adopts the anti-corrosion steel framework of nickel plating, simultaneously in order to alleviate total quality, described metal framework 2 is hollow metal framework.
The application preferably inside metal framework 2 long margin frame both sides be provided with two symmetrical holes for hoist 10, promote to facilitate crane.According to concrete service condition, outside the long margin frame of metal framework 2 described in the application, short frame contact position is provided with purlin frame, described purlin frame can be symmetrical in long margin frame both sides, also can be provided with purlin frame in side, described purlin frame is divided into projection and non-protruding two kinds, can be determined on a case-by-case basis.
The application is provided with compound insulating material layer in metal framework, and described compound insulating material layer comprises backing layer 8, heat insulation core material layer 5 and surface layer 3; Wherein said backing layer 8 is preferably ferric aluminium sulfate concrete backing layer, and it has the effect of antiseepage hydrophobic, and described heat insulation core material layer 5 is foam cement with the material of described surface layer 3, and wherein surface layer 3 is for having the foam cement of compact structure.The foaming materials cement of described heat insulation core material layer and surface layer is above-mentioned to be described in detail, and no longer repeats herein.
According to the present invention, described backing layer 8 comprises cement mortar and the first fiberglass gridding cloth, and described cement mortar inside is provided with the first fiberglass gridding cloth 4.Described surface layer comprises foam cement and the second fiberglass gridding cloth, and described foam cement inside is provided with the second fiberglass gridding cloth 4 ＇.The application can also be provided with the 3rd fiberglass gridding cloth 4 ＇ ＇ between backing layer 8 and heat insulation core material layer 5, at surface layer 3, the 4th fiberglass gridding cloth 4 ＇ ＇ ＇ can also be set away from heat insulation core material layer 5 end, the setting position of described 4th fiberglass gridding cloth is for the second fiberglass gridding cloth, and its setting position is foam cement surface.
The application comprises foam cement, prestress steel rib net layer and truss at heat insulation core material layer 5, and described foam cement inside is provided with prestressed reinforcement net 11 and truss 7, as shown in Figure 2, Fig. 2 is thermal insulating composite panel plan structure schematic diagram of the present invention for described prestressed reinforcement net 11 and the setting of described truss 7 in thermal insulating composite panel.Described prestressed reinforcement net 11 is that the prestressed reinforcement intersected by transverse and longitudinal is formed, and described truss 7 is truss well known to those skilled in the art, and the application does not do special restriction.Do not deform with during load-bearing in foam cement perfusion to make metal framework, the application is preferably connected with plated film steel mesh reinforcement 9 four of metal framework right angle, described plated film steel mesh reinforcement 9 while form triangle with the right-angle side of metal framework, metal framework steadiness can be made better.
This application provides thermal insulating composite panel and preparation method thereof, the application by being provided with fiberglass gridding cloth in surface layer and backing layer, and by arranging truss and prestressed reinforcement net in heat insulation core material layer, and have selected the expanded material of special liquid composite foamable agent as heat insulation core material layer, thus make thermal insulating composite panel have insulation, heat insulation, lightweight, durable, wind resistance, fire-resistant, load-bearing, hydrophobic, shock resistance, anti-condensation, good weatherability, acid-alkali-corrosive-resisting, environmental protection and waste utilization, characteristic shape can be made according to different demand, install fast and convenient, long service life.
Experimental result shows, light steel assembled thermal insulating composite panel structural weight per square meter only have cast-in-place structural to build about 20%; By adjusting light steel assembled thermal insulating composite panel thickness of slab and internal frame, weight capacity can reach 2.2KN/m
2~ 5.0KN/m
2; Light steel assembled heat-preservation composite roof plate fire endurance>=2 hour (supporting member country-level fire resistance rating in roof is 1.5 hours); Safe operating life is greater than 50 years (industrial products); Coefficient of thermal conductivity is 0.071 ~ 0.095W/m.k (company standard), and 900 DEG C of high temperature dried burning after 120 minutes, and back side average temperature is less than 45 DEG C; Board core material acoustical reduction coefficient>=45 (dB); Light steel assembled thermal insulating composite panel and structure adopt and are welded to connect method, and wind loading rating is strong; Unique foam process makes core have very high rate of closed hole, and hydrophobicity performance is superior, water absorption rate≤5%; Compared with the gas concrete of same thickness, common brick wall, light steel assembled thermal insulating composite panel heat-insulating property is more than 2 times of gas concrete, is more than 8 times of common brick wall.
In order to understand the present invention further, be described in detail to thermal insulating composite panel provided by the invention and preparation method thereof below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1
1) will be placed on production line according to designing the different length nickel plating hollow steel framework cut, check steel framework whether there is obvious damage, again measure appearance and size and determine errorless after, according to plan welding together, check whether joint seals completely, and determine welding draw-in groove as required, make light steel frame, wherein light steel frame height 100mm, wide 50mm, protuberance height is about 30mm, and bottom width is about 35mm, 30 ° ~ 45 °, angle of slope;
2) first the solid mode of system is adopted to connect prestressing force cold-drawn bar according to plan, start vertically to lay according to uniform distances again after 10 ~ 30cm parallel laid completes from frame, lay first floor fiberglass gridding cloth, pave after fixing at the appointed time the ferric aluminium sulfate rapid setting cement mortar (laying depth is 8 ~ 10mm about) of preparation to be fallen in steel frame, and rapid rake wipes out after vibration a few minutes, all completed before initial set above, then second layer fiberglass gridding cloth is laid, get rid of the bubble (attention is filled a vacancy with floating) in cement, formation has impervious, waterproof slightly larger than the thick fine and close cement mortar bottom surface layer of 10mm, bottom surface layer planeness is 3mm,
3) by one piece of smooth ride being layed in cleaning of intact plastic cloth, fix and ensure to leave certain surplus, the leakage material place that fixing steel frame rear enclosed is possible, finally lubricate, light steel frame is placed on ride, girder-embedded according to plan welding, girder-embeddedly start lay every the mutual square crossing of 100cm and weld from frame, measure the difference of light steel frame catercorner length, whether the difference of length and width length and the difference of intermediate sizes be in prescribed limit, require that the difference of light steel frame catercorner length is no more than 5mm, the difference of length and width length and the difference of intermediate sizes are no more than 3mm, 4) smear bottom ash and ensure smooth and uniformity, application quality is than the neopelex for 1:2:3:6, alkylpolyoxyethylene sodium sulphate, saponin and hydrolyzed vegetable protein are as liquid composite foamable agent, first neopelex is mixed with the solution that density is 0.35kg/L, alkylpolyoxyethylene sodium sulphate density is the solution of 0.3kg/L, alkylpolyoxyethylene is mixed with the solution that density is 0.3kg/L, saponin is (suitable with saponin molecular weight depending on hydrolyzed vegetable protein with hydrolyzed vegetable protein, preparation mass ratio is 5:1) solution preparation becomes concentration to be the solution of 1kg/L, density is that the gelatin solution of 0.2kg/L is as macromolecule foam stabilizer, density is that the polyglycol solution of 10g/L is as composite assistant, wherein both sexes blowing agent: foam stabilizer: composite assistant=5:1:1 (volume ratio), the foam cement being mixed with tacryl (mass ratio of tacryl and cementitious material is 1:1200) prepared is poured in steel framework rapidly and wipes out, slightly higher than both sides in the middle of keeping, the obtained stability with superelevation, independent, small, to close foam concrete core, makes its key technical indexes reach: dry apparent density 250 ~ 550kg/m
3, compressive strength 2.0 ~ 5.0MPa, volume water absorption rate≤15%, coefficient of thermal conductivity 0.045 ~ 0.059W/ (mK).
5) after building foam concrete 15s, lay third layer glass fiber reticular cloth, and check whether foaming height and bubble diameter meet the requirements, after cement to be foamed has foamed substantially, use Defoaming machine froth breaking, after laying the 4th layer of glass fiber net, beat limit ash simultaneously, tie-bar filler, form upper layer, wherein upper layer thickness is about 10mm, and planeness is less than 3mm;
6) smooth cover Polypropylence Sheet after roll extrusion check whether there is vapour arch, and measure whole height and planeness, all need to meet industry standard, company standard and designing requirement.On qualified bonnet, Polypropylence Sheet normal temperature stores stand-by after maintenance a period of time; Detect the performance of thermal insulating composite panel prepared by the present embodiment, testing result is as shown in table 1.
With reference to embodiment 1, this invention is the light steel assembled thermal insulating composite panel making different Aspect Ratio, can determine whether weld purlin frame according to actual needs, the light steel assembled thermal insulating composite panel of this invention has light steel skeleton, (load-bearing, percolation-proof, shock resistance) surface layer waterborne, (load-bearing, percolation-proof, shock resistance) cutting optimal, the formations such as foam concrete core, especially the application of industrial construction factory building roof plate is suitable as, simple installation, energy-conserving and environment-protective, good endurance, combination property is superior.
Embodiment 2
1) will be placed on production line according to designing the different length nickel plating hollow steel framework cut, check whether steel framework exists obvious damage, again measure appearance and size and determine errorless after, according to plan welding together, check whether joint seals completely, and determine welding draw-in groove as required, make light steel frame, wherein draw-in groove and light steel frame link length, bottom width and tip lengths can design according to actual operation requirements;
2) first the solid mode of system is adopted to connect prestressing force cold-drawn bar according to plan, start vertically to lay according to uniform distances again after 10 ~ 30cm parallel laid completes from frame, lay first floor fiberglass gridding cloth, pave after fixing at the appointed time the ferric aluminium sulfate rapid setting cement mortar (laying depth is 8 ~ 10mm about) of preparation to be fallen in steel frame, and rapid rake wipes out after vibration a few minutes, all completed before initial set above, get rid of the bubble (attention is filled a vacancy with floating) in cement, formed thickness be about 10mm and planeness to be no more than having of 3mm impervious, the fine and close cement mortar bottom surface layer of summary of waterproof,
3) by one piece of smooth ride being layed in cleaning of intact plastic cloth, fix and ensure to leave certain surplus, the leakage material place that fixing steel frame rear enclosed is possible, finally lubricate, light steel frame is placed on ride, girder-embedded according to plan welding, girder-embeddedly start lay every the mutual square crossing of 100cm and weld from frame, measure the difference of light steel frame catercorner length, whether the difference of length and width length and the difference of intermediate sizes be in prescribed limit, require that the difference of light steel frame catercorner length is no more than 5mm, the difference of length and width length and the difference of intermediate sizes are no more than 3mm, 4) smear bottom ash and ensure smooth and uniformity, the neopelex that application quality ratio is 1:2:5:6, alkylpolyoxyethylene, saponin and hydrolyzed vegetable protein are as liquid composite foamable agent, first neopelex is mixed with the solution that density is 0.35kg/L, alkylpolyoxyethylene is mixed with the solution that density is 0.3kg/L, saponin and hydrolyzed vegetable protein (suitable depending on hydrolyzed vegetable protein and saponin molecular weight, preparation mass ratio is 5:1) solution preparation becomes concentration to be the solution of 1kg/L, density is that the gelatin solution of 0.2kg/L and a small amount of polyacrylamide solution are as macromolecule foam stabilizer, density is that the polyglycol solution of 10g/L is as composite assistant, wherein both sexes blowing agent: foam stabilizer: composite assistant=25:5:4 (volume ratio), the foam cement being mixed with tacryl (mass ratio of tacryl and cementitious material is 1:1200) prepared is poured in steel framework rapidly and wipes out, , slightly higher than both sides in the middle of keeping, the obtained stability with superelevation, independent, small, the foam concrete core closed, and foam concrete core layer thickness is not less than 95mm, its the key technical indexes is reached: dry apparent density 250 ~ 550kg/m
3, compressive strength 2.0 ~ 5.0MPa, volume water absorption rate≤15%, coefficient of thermal conductivity 0.045 ~ 0.059W/ (mK).
5) after building foam concrete 15s, lay second layer glass fiber reticular cloth, and check whether foaming height and bubble diameter meet the requirements, after cement to be foamed has foamed substantially, use Defoaming machine froth breaking, tie-bar filler, form the upper layer that planeness is less than 3mm;
6) smooth cover Polypropylence Sheet after roll extrusion check whether there is vapour arch, and measure whole height and planeness, all need to meet industry standard, company standard and designing requirement.On qualified bonnet, Polypropylence Sheet normal temperature stores stand-by after maintenance a period of time; Detect the performance of thermal insulating composite panel prepared by the present embodiment, testing result is as shown in table 1.
With reference to embodiment 2, the light steel assembled thermal insulating composite panel of this invention has light steel skeleton, draw-in groove (load-bearing, percolation-proof, shock resistance) upper layer, (load-bearing, percolation-proof, shock resistance) cutting optimal, the formations such as foam concrete core, especially the application of industrial construction factory building roof plate is suitable as, simple installation, energy-conserving and environment-protective, good endurance, combination property is superior.
The performance data table of thermal insulating composite panel prepared by table 1 embodiment
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a preparation method for thermal insulating composite panel, comprises the following steps:
A), the prestressed reinforcement that transverse and longitudinal is intersected is connected in metal framework inside, obtain prestress steel rib net layer, the first fiberglass gridding cloth is laid in the side of prestress steel rib net layer, make the first fiberglass gridding cloth inner at metal framework, then in described first fiberglass gridding cloth, pour cement mortar into;
B), at the opposite side truss frame for connecting of prestressed reinforcement net, in described truss, pour foam cement into, re-lay the second fiberglass gridding cloth, obtain thermal insulating composite panel;
Described foam cement is obtained through foaming by cement and liquid composite foamable agent.
2. preparation method according to claim 1, is characterized in that, steps A) also comprise afterwards:
The 3rd fiberglass gridding cloth is laid on described cement mortar surface.
3. preparation method according to claim 1, is characterized in that, step C) in also comprise after laying second fiberglass gridding cloth:
Described second fiberglass gridding cloth lays the 4th fiberglass gridding cloth.
4. preparation method according to claim 1, is characterized in that, also comprises one or more in macromolecule both sexes foam stabilizer, auxiliary agent and polypropylene fibre in described foam cement.
5. preparation method according to claim 4, is characterized in that, described liquid composite foamable agent comprises lauryl sodium sulfate, alkylpolyoxyethylene, saponin and hydrolyzed vegetable protein; Described macromolecule both sexes foam stabilizer is one or more in modification calcium stearate, gelatin, fatty acid distribution of coconut oil diglycollic amide and nonionic cellulose ether; Described auxiliary agent is one or both in polyethylene glycol and acrylate.
6. a thermal insulating composite panel, comprising:
Metal framework;
Be arranged at the compound insulating material layer of metal framework inside, described compound insulating material layer comprises the cement mortar backing layer, foaming cement thermal insulation core layer and the foam cement surface layer that set gradually;
The first fiberglass gridding cloth is provided with in described cement mortar backing layer;
Be provided with prestress steel rib net layer and truss in described foaming cement thermal insulation core layer, described prestress steel rib net layer and truss are connected on described metal framework;
The second fiberglass gridding cloth is provided with in described foam cement surface layer;
Described foam cement is obtained through foaming by cement and liquid composite foamable agent.
7. thermal insulating composite panel according to claim 6, is characterized in that, also comprises one or more in macromolecule foam stabilizer, auxiliary agent, polypropylene fibre, flyash and slag in described foam cement.
8. thermal insulating composite panel according to claim 7, is characterized in that, the liquid composite foamable agent of described liquid composite foamable agent comprises lauryl sodium sulfate, alkylpolyoxyethylene sodium sulphate, saponin and hydrolyzed vegetable protein; Described macromolecule both sexes foam stabilizer is one or more in modification calcium stearate, gelatin, fatty acid distribution of coconut oil diglycollic amide and nonionic cellulose ether; Described auxiliary agent is one or both in polyethylene glycol and acrylate.
9. thermal insulating composite panel according to claim 6, is characterized in that, is provided with the 3rd fiberglass gridding cloth between described backing layer and described heat insulation core material layer, and described surface layer arranges the 4th fiberglass gridding cloth away from described heat insulation core material layer end.
10. thermal insulating composite panel according to claim 6, is characterized in that, described metal framework is nickel plating steel framework, zinc-plated steel framework, aluminium alloys steel framework or magnadure steel framework.
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| CN109032074A (en) * | 2018-07-12 | 2018-12-18 | 苏州大学 | A kind of mobile phone metal center machining buckling deformation reconstructing method |
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Application publication date: 20150805 |