CN102505799B - Light energy-saving and heat-insulating composite wallboard and preparation method thereof - Google Patents

Light energy-saving and heat-insulating composite wallboard and preparation method thereof Download PDF

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Publication number
CN102505799B
CN102505799B CN201110380304.1A CN201110380304A CN102505799B CN 102505799 B CN102505799 B CN 102505799B CN 201110380304 A CN201110380304 A CN 201110380304A CN 102505799 B CN102505799 B CN 102505799B
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China
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light energy
board
haydite
wallboard
saving
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CN201110380304.1A
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Chinese (zh)
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CN102505799A (en
Inventor
戴李宗
陈珉
陈光剑
张龙
许一婷
曾碧榕
罗伟昂
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厦门大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/24Structural elements or technologies for improving thermal insulation
    • Y02A30/244Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires

Abstract

The invention provides a light energy-saving and heat-insulating composite wallboard which is on the basis of organic/inorganic hybridized nano-enhanced modification technology and a preparation method thereof, and relates to a heat-insulating wallboard. According to the heat-insulating wallboard, a calcium silicate plate serves as a surface layer of the wallboard and ceramsite concrete serves as a core material. The ceramsite concrete is prepared from ceramsite, cement, coal ash, gypsum, AcryloPOSS, redispersible emulsion powder, cellulose, a water reducing agent, a foaming agent and an early strength agent. The strength, the durability, the flame resistance and the working performances of the light energy-saving and heat-insulating composite wallboard are improved by adding organic/inorganic hybridized nano particles into the ceramsite concrete and using the nano size enhancement effect and the flame resistance of the POSS, so the composite wallboard is energy-saving and environment-friendly, is easy to assemble and disassemble and can be hung through a nail.

Description

A kind of light energy-saving thermal preservation combined wall board and preparation method thereof
Technical field
The present invention relates to a kind of heat-insulation wall plate, especially a kind of light energy-saving thermal preservation combined wall board that strengthens modification technology based on hybrid nanometer and preparation method thereof.
Background technology
Along with the very fast development of national economy, the raising day by day of population growth and living standards of the people, economic infrastructure popularization, building is to the direction fast development of diversification, technicalization, and constructional materials is also towards the future development of environmental protection and energy saving, high-strength light.The loam brick of tradition in partition material, ruins field and takes up an area, serious waste land resources, and energy consumption is serious, contaminated environment even, wet trade method construction that it adopts simultaneously causes labour intensity high, and building costs is large, is now eliminated gradually.The improvement innovation of building partition material constantly advances, and wherein light energy-saving heat-insulating wall material has the production advantage and building advantage.
Existing lightweight energy-saving thermal insulation wall plate, is generally to do wallboard top layer by glass fiber reinforced cement or calcium silicate board, take cement as gelating material, and the aglites such as haydite or polystyrene foam particles (EPS) are made composite partition wall plate as core.This composite partition wall plate combines thermal insulation mortar, insulation blocks with the various excellent properties of EPS plate, heat preservation and soundproof, high-strength light, improved to a great extent the performance of light energy conservation materials for wall, but its durability, anti-flammability, can application property and moulding process and operation on remain defect, have much room for improvement.
At light energy-saving thermal preservation combined wall board in the early stage of development, [the Chinese patent such as Bian Xian and Liu Wei, CN1062947A, combined wall board] top layer of making wallboard with glass fiber reinforced cement is provided, with leca sand-free coarse porous concrete, make combined wall board formula and the preparation technology of sandwich, the cement based core of combined wall board adopts leca 50%~60%, aluminium sulfate high-early (strength) cement 20%~30%, flyash 2%~4% to mix by weight, the preparation of water mix.The construction of composite wall material that this invention provides is simple and easy, cost is lower, but remains defect at aspects such as intensity, durability, anti-flammability and workabilities.Many researchers to how improving the combination property of lightweight heat-insulating composite wallboard are studied.Bian Xian [Chinese patent, CN1094671A, composite high-strength sandwich partition wall] a kind of improved sandwich composite wall plate is provided, with short glass fiber screen cloth refinforced cement, make surface course, the polystyrene foam etc. of take is made sandwich layer as the ultralight concrete of aggregate, increases the admixtures such as calcium flying dust and medium sand and has played obvious humidification.[the Chinese patents such as Zhu Ren Zhe, CN1188086A, a kind of formulation for light composite wallboard product] a kind of formulation for light composite wallboard product is provided, adopt corrosion resistant nylon, vinylon to replace the glass fiber in refinforced cement mixed material, improve the functional performance of goods, and reduced price.Zhang Yingbao [Chinese patent, CN1530501A, light cast-in-situs concrete wallboard] provides a kind of formula and technique of light cast-in-situs concrete wallboard, take flyash, slag micropowder and silica flour as admixture, significantly improves durability and the anti-flammability of concrete panel.Yin Xiaobei [Chinese patent, CN101088952A, high strength light wall board material] provides a kind of high strength light wall board material, adopts agriculture waste fiber, cracking resistance short fiber and meets exciting agent etc., realizes the lifting of high-strength, impervious, durable each side combination property.Zhu Qi [Chinese patent, CN101857415A, composite-type light internal and external wallboard] provides a kind of lightweight, simple composite wall board material of filling a prescription, and it is characterized in that adopting the simple material such as rice husk, gypsum to realize the improvement of sound isolating and heat insulating performance.
Summary of the invention
Object of the present invention aims to provide a kind ofly to be had high-strength light, heat-insulating flame-retardant and has good durability, workability, can simplify light energy-saving thermal preservation combined wall board that strengthens modification technology based on hybrid nanometer of construction technology and preparation method thereof simultaneously.
Described light energy-saving thermal preservation combined wall board be take the top layer that calcium silicate board is wallboard; take haydite concrete as core; wallboard thickness 60~120mm, each component of described haydite concrete is in mass ratio: haydite 10~15, cement 100~150, flyash 10~15, gypsum 2~5, AcryloPOSS 0.1~0.3, redispersable latex powder 0.5~3, cellulose 02~0.5, water reducing agent 0.8~1, blowing agent 02~0.5 and early strength admixture 0.1~2.5.
Described Acrylo POSS is a kind of hybrid nano material, and its chemical constitution is as follows:
Described haydite can be 15~35mm, unit weight is less than 400kg/m 3building porcelain granule.
Described redispersable latex powder can be ethene-vinyl acetate copoly type high molecular polymer etc.
Described cellulose can be hydroxypropyl methylcellulose etc.
Described water reducing agent can be naphthalene series high-efficiency water-reducing agent, and composition is β base naphthalenesulfonate formaldehyde condensation compound.
Described blowing agent can be wd-11 cement blowing agent etc.
Described early strength admixture can be at least one in anhydrous calcium chloride, triethanolamine etc.
The preparation method of described light energy-saving thermal preservation combined wall board comprises the following steps:
1) cement, flyash, gypsum, cellulose, water reducing agent, early strength admixture are added to mortar mixer by component proportion, with mixer dry mixing, become powder;
2) by haydite first with after water-wet, then with step 1) powder of gained mixes, then according to mass ratio, water/binder ratio is 0.3~0.5, and water is added in mortar mixer, makes haydite surface uniform roll sticky cement paste;
3) Acrylo POSS in mass ratio: ethanol=1: 3 dissolve Acrylo POSS with ethanol, and with redispersable latex powder by proportioning modulation evenly after, add mortar mixer;
4) adopt homogenizer that foaming agent solution is stirred into foam;
5) blowing agent that stirs into foam is added to the haydite mortar that stirs to obtain in mortar mixer;
6) fixed mould is installed, after cleaning wiping, coat release agent, calcium silicate board is put into fixed mould both sides, then the haydite mortar stirring is added between two sheet surface layers that stand in mould, shake puddling is real;
7) after concrete initial set between sheet surface layer, the demoulding, watering maintenance 6~8 days, is then placed in dry environment natural curing and within 26~30 days, can obtains light energy-saving thermal preservation combined wall board finished product.
Light energy-saving thermal preservation combined wall board tool of the present invention has the following advantages:
(1) Acrylo POSS is a kind of hybrid nano material, Si-O-Si key forms its cage shape inorganic structure center, multi-arm acrylic-functional covers inorganic structure central periphery, is of a size of 1~3nm, and the structure of POSS rigidity is given at its cage shape inorganic structure center.Because acrylic-functional and the redispersable latex powder of Acrylo POSS periphery has good compatibility, its inorganic structure center and cement, the silicate systems such as haydite have good compatibility, this compatibility structure, effectively reduce the gathering that POSS occurs because of nanometer size effect, Acrylo POSS is dispersed in haydite concrete core, utilize the rigidity of POSS cage structure simultaneously, the anti-flammability of stability and Si-O-Si key, playing nanometer strengthens, fire-retardant, improve the effect of durability, obtain high-strength light, the light energy-saving thermal preservation combined wall board of heat-insulating, fire-preventing, workability is good, can follow closely, saw, plane, hanging force is good.
(2) modification to cement by polymer, the especially synergy to cement by redispersable latex powder and hydroxypropyl methylcellulose, thickening tackify, has effectively improved the adhesion strength of wallboard core and sheet surface layer.
(3) adopt naphthalene series high-efficiency water-reducing agent, high efficiency water reducing agent, when playing water-reduction, reduces concrete density, has effectively improved the pumping of haydite, reduces difficulty of construction and manufacturing cost, has improved production efficiency.
(4) with calcium silicate board, make panel, adopt disposable vertical pouring moulding, manufacture craft is simple, wallboard good integrity, not yielding, directly the material such as sticking brick, wallpaper, wooden plaque is made facing and is processed, and is easy to cut assembled, mounted and removable, reusable edible, environmental protection and energy saving.
(5) adopt haydite and polymer modified cement-concrete to be mixed with, this type of haydite coefficient of thermal conductivity is low, have " interior maintenance " acts on, and makes combined wall board collection high-strength, and the excellent properties such as lightweight, energy-conservation, insulation, sound insulation are in one.
Accompanying drawing explanation
Fig. 1 is that the structure of light energy-saving thermal preservation combined wall board embodiment of the present invention forms schematic diagram.
The specific embodiment
Below by embodiment, the present invention is elaborated.
Embodiment 1
1) 0.1 part of 100 parts of 42.5R Portland cement, 10 parts, II level flyash, 2 parts, gypsum, 0.3 part of hydroxypropyl methylcellulose, 0.8 part of naphthalene series high-efficiency water-reducing agent, calcium chloride is added to mortar mixer, even with mixer dry mixing.
2) by light-weight building haydite with after water-wet, mix with powders such as the uniform cement of dry mixing, flyash, then 60 parts of water (water/binder ratio is about 0.5) are added in mortar mixer and stir, make haydite surface uniform roll sticky cement paste.
3) 0.1 part of Acrylo POSS (the MA0736-Acrylo POSS Cage Mixture that U.S. hybrid plastics company produces) is dissolved with 0.3 part of ethanol, and after even with 0.5 part of redispersable latex powder modulation, add mortar mixer.
4) 0.3 part of the wd-11 cement blowing agent that adopts homogenizer to stir into foam is added in mortar mixer, and be stirred into haydite mortar.
5) mould (building partition batten industry universal mould) is installed, and coat release agent through cleaning wiping, calcium silicate board is put into fixed mould both sides by 60mm, 90mm and 120mm plate distance, the haydite mortar stirring is added between calcium silicate board two sheet surface layers, shake puddling is real.After concrete initial set between sheet surface layer, the demoulding, watering maintenance 7 days, is then placed in dry environment natural curing and within 28 days, can obtains the light energy-saving thermal preservation combined wall board finished product that thickness of slab is respectively 60mm, 90mm and 120mm.
The physical properties such as the shock resistance of the light energy-saving thermal preservation composite wall material preparing, bending resistance rupture load are tested, and result is as shown in table 1.Contrast by light energy-saving thermal preservation composite wall material quantitative measurement result and national standard in table 1 can be found, adopt the hybrid nanometer of Acrylo POSS to strengthen modification technology, significantly improved the intensity of light energy-saving thermal preservation composite wall material, the each side combination property such as durable, fire-retardant.
Table 1 light energy-saving thermal preservation composite wall material physical property testing result and national standard
Embodiment 2~6
Preparation method, with embodiment 1, changes haydite concrete and respectively forms consumption (in Table 2), and the quantitative measurement result of gained light energy-saving thermal preservation combined wall board is with embodiment 1.
Each amounts of components of table 2 haydite concrete (mass fraction)
The structure that Fig. 1 provides light energy-saving thermal preservation combined wall board embodiment of the present invention forms schematic diagram, and in Fig. 1, upper and lower sheet surface layer 1 is insulation calcium silicate board, and core 3 strengthens modified cement-concrete 4 by light-weight building haydite 2 and organic/inorganic nano and forms.

Claims (6)

1. a light energy-saving thermal preservation combined wall board, it is characterized in that take the top layer that calcium silicate board is wallboard, take haydite concrete as core, wallboard thickness 60~120mm, each component of described haydite concrete is in mass ratio: haydite 10~15, cement 100~150, flyash 10~15, gypsum 2~5, Acrylo POSS0.1~0.3, redispersable latex powder 0.5~3, cellulose 0.2~0.5, water reducing agent 0.8~1, blowing agent 0.2~0.5 and early strength admixture 0.1~2.5;
Described Acrylo POSS is a kind of hybrid nano material, and its chemical constitution is as follows:
Described haydite is that 15~35mm, unit weight are less than 400kg/m 3building porcelain granule;
Described redispersable latex powder is ethene-vinyl acetate copoly type high molecular polymer.
2. a kind of light energy-saving thermal preservation combined wall board as claimed in claim 1, is characterized in that described cellulose is hydroxypropyl methylcellulose.
3. a kind of light energy-saving thermal preservation combined wall board as claimed in claim 1, is characterized in that described water reducing agent is naphthalene series high-efficiency water-reducing agent, and composition is β base naphthalenesulfonate formaldehyde condensation compound.
4. a kind of light energy-saving thermal preservation combined wall board as claimed in claim 1, is characterized in that described blowing agent is wd-11 cement blowing agent.
5. a kind of light energy-saving thermal preservation combined wall board as claimed in claim 1, is characterized in that described early strength admixture is at least one in anhydrous calcium chloride, triethanolamine.
6. the preparation method of a kind of light energy-saving thermal preservation combined wall board as claimed in claim 1, is characterized in that comprising the following steps:
1) cement, flyash, gypsum, cellulose, water reducing agent, early strength admixture are added to mortar mixer by component proportion, with mixer dry mixing, become powder;
2) by haydite first with after water-wet, then mix with the powder of step 1) gained, then according to mass ratio, water/binder ratio is 0.3~0.5, and water is added in mortar mixer, makes haydite surface uniform roll sticky cement paste;
3) Acrylo POSS in mass ratio: ethanol=1: 3 dissolve Acrylo POSS with ethanol, and with redispersable latex powder by proportioning modulation evenly after, add mortar mixer;
4) adopt homogenizer that foaming agent solution is stirred into foam;
5) blowing agent that stirs into foam is added to the haydite mortar that stirs to obtain in mortar mixer;
6) fixed mould is installed, after cleaning wiping, coat release agent, calcium silicate board is put into fixed mould both sides, then the haydite mortar stirring is added between two sheet surface layers that stand in mould, shake puddling is real;
7) after concrete initial set between sheet surface layer, the demoulding, watering maintenance 6~8 days, is then placed in dry environment natural curing and within 26~30 days, can obtains light energy-saving thermal preservation combined wall board finished product.
CN201110380304.1A 2011-11-24 2011-11-24 Light energy-saving and heat-insulating composite wallboard and preparation method thereof CN102505799B (en)

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