CN102850018B - Cement-based fiber reinforcement composite insulation board - Google Patents
Cement-based fiber reinforcement composite insulation board Download PDFInfo
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- CN102850018B CN102850018B CN201210364221.8A CN201210364221A CN102850018B CN 102850018 B CN102850018 B CN 102850018B CN 201210364221 A CN201210364221 A CN 201210364221A CN 102850018 B CN102850018 B CN 102850018B
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Abstract
The invention discloses a cement-based fiber reinforcement composite insulation board which is of a structure that a cement-based core layer outside with fiberglass gridding cloth outside is arranged; surface layers are arranged outside the fiberglass gridding cloth; the components of the cement-based core layer comprise silicate cement, water, polystyrene granules, emulsion, a water reducing agent, a thickener and an early strength agent and the mass ratio of the silicate cement to the water to the polystyrene granules to the emulsion to the water reducing agent to the thickener to the early strength agent is 100:(40-60):(5-8):(2-5):(0.1-0.4):(0.1-0.3):(0.5-1); the components of each surface layer comprise silicate cement, water, polystyrene granules, emulsion, a water reducing agent, a thickener and an early strength agent and the mass ratio of the silicate cement to the water to the polystyrene granules to the emulsion to the water reducing agent to the thickener to the early strength agent is 100:(35-50):(2-4):(2-5):(0.2-0.5):(0.2-0.4):(0.5-1); the water reducing agents in the cement-based core layer and the surface layers are all polycarboxylic acid water reducing agents; the thickeners in the cement-based core layer and the surface layers are all hydroxypropyl methyl cellulose; the early strength agents in the cement-based core layer and the surface layers are all sodium sulfate; and the emulsion in the cement-based core layer and the surface layers is all acrylic acid emulsion, wherein the solid content of acrylic acid is more than or equal to 50 percent and less than 65 percent.
Description
Technical field
The present invention relates to external-wall heat-insulation material field, relate in particular to the fiber composite insulated plate of cement based on external wall.
Background technology
China is a building big country, and annual newly constructed house area is up to 17～1,800,000,000 square metres, exceedes all developed countries and build up every year the summation of construction area.Along with the fast development of China's building cause, building energy consumption also increases rapidly.National economy wants sustainable development, and building energy conservation is imperative, and wherein construction wall insulation is the pith of building energy conservation.Construction wall insulation is at present mainly by the fiber composite insulated plate of cement based is set on external wall, thereby building is played to the effect of insulation.The fiber composite insulated plate of traditional cement based, formed by cement based sandwich layer and two-layer fiberglass mesh layer of cloth, fiberglass mesh layer of cloth lays respectively at the outside of cement based sandwich layer, the Main Ingredients and Appearance of described cement based sandwich layer is sulphate aluminium cement, granules of polystyrene and sand, and granules of polystyrene is commonly called as EPS particle.The shortcoming of traditional fiber composite insulated plate of cement based is as follows: one, the bulk strength of cement based sandwich layer is large, but its dry density is large, cause the thermal conductivity factor of cement based sandwich layer high, thereby cause the thermal conductivity factor of traditional fiber composite insulated plate of cement based larger, be difficult to reach index of construction energy conservation requirement, cannot meet the instructions for use of the external wall energy-saving day by day improving; Two, the price of sulphate aluminium cement is higher, thereby causes the production cost of traditional fiber composite insulated plate of cement based high; Three, the cohesive force between fiberglass mesh layer of cloth and cement based sandwich layer is not strong, and fiberglass mesh layer of cloth easily comes off.
Summary of the invention
The object of the invention is: provide one can reduce production costs and thermal conductivity factor, and can strengthen the cement based fiber-reinforced composite warming plate of the cohesive force between fiberglass mesh layer of cloth and cement based sandwich layer.
For achieving the above object, the technical solution used in the present invention is: cement based fiber-reinforced composite warming plate, its structure is: cement based sandwich layer, the both sides of cement based sandwich layer are provided with fiberglass mesh layer of cloth, the outside of fiberglass mesh layer of cloth is provided with surface layer, the composition of described cement based sandwich layer comprises portland cement, water, granules of polystyrene, emulsion, water reducer, thickener, early strength agent, and its mass ratio is: 100: 40～60: 5～8: 2～5: 0.1～0.4: 0.1～0.3: 0.5～1; The composition of described surface layer comprises portland cement, water, granules of polystyrene, emulsion, water reducer, thickener, early strength agent, its mass ratio is: 100: 35～50: 2～4: 2～5: 0.2～0.5: 0.2～0.4: 0.5～1, water reducer in described cement based sandwich layer and surface layer is polycarboxylate water-reducer, thickener is hydroxypropyl methyl cellulose ether, and early strength agent is sodium sulphate; Described emulsion is acrylic emulsion, and wherein acrylic acid solid content is more than or equal to 50% and be less than 65%.
Further, aforesaid cement based fiber-reinforced composite warming plate, wherein, in described cement based sandwich layer, the particle diameter of granules of polystyrene is 3～5mm, in surface layer, the particle diameter of granules of polystyrene is 1～2mm.
Advantage of the present invention is: the cement based sandwich layer of being made up of portland cement and additive etc., in having guaranteed timber intensity, its dry density reduces greatly, therefore thermal conductivity factor reduces greatly, thereby can meet well the energy-conservation requirement of external wall, in addition the low price of portland cement, has therefore reduced the cost of manufacture of sheet material; In addition in the arranged outside of fiberglass mesh layer of cloth the surface layer of being made by portland cement and additive etc., not only greatly improved the surface strength of sheet material, can greatly increase the cohesive force of the cement based sandwich layer of fiberglass mesh layer of cloth and inner side simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of cement based fiber-reinforced composite warming plate of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in further detail.
As shown in Figure 1, cement based fiber-reinforced composite warming plate, its structure is: portland cement base sandwich layer 1, the both sides of portland cement base sandwich layer 1 are provided with fiberglass mesh layer of cloth 2, and the outside of fiberglass mesh layer of cloth 2 is provided with surface layer 3.The moulding process of cement based fiber-reinforced composite warming plate mainly comprises the following steps: (one) cope match-plate pattern; (2) upper layer slurry, surface layer slurry is mainly water reducer, thickener, early strength agent by portland cement, water, granules of polystyrene, acrylic emulsion and surface layer additive, after mixing, stirs and forms by quality proportioning; (3) upper fiberglass mesh layer of cloth; (4) put portland cement base center stock, portland cement base center stock is mainly water reducer, thickener, early strength agent by portland cement, water, granules of polystyrene, acrylic emulsion and sandwich layer additive, after mixing, stirs and forms according to quality proportioning; (5) roll forming; (6) upper fiberglass mesh layer of cloth; (7) upper layer slurry, surface layer slurry is mainly water reducer, thickener, early strength agent by portland cement, water, granules of polystyrene, acrylic emulsion and surface layer additive, after mixing, stirs and forms by quality proportioning; (8) natural curing form removal after a day; (9) send into standard curing room, temperature is 20 ℃ ± 2 ℃, and relative humidity is 95%, and maintenance, after 28 days, is dried to constant weight; (10) detect.
According to the step of above-mentioned moulding process, provide respectively the cement based sandwich layer of different proportioning ratios and each specific embodiment of surface layer with the form of form below:
Example one:
Composition proportion table 1 unit: Kg
Test performance table 1
| Project | Unit | Performance indications |
| Dry density | Kg/m 3 | 290 |
| Thermal conductivity factor | W/(m·K) | 0.07 |
| Compression strength | MPa | 0.72 |
| Tensile strength | MPa | 0.35 |
| Water absorption rate (V/V) | ％ | 9.5 |
| Drying shrinkage value | mm/m | 0.78 |
| Coefficient of softing | 0.86 |
In composition proportion table 1, in cement based sandwich layer, the particle diameter of EPS particle is selected 5mm, and the particle diameter of the EPS particle in surface layer is selected 1mm, and in acrylic emulsion, acrylic acid solid content is 56%.
Example two:
Composition proportion table 2 unit: Kg
Test performance table 2
| Project | Unit | Performance indications |
| Dry density | Kg/m 3 | 280 |
| Thermal conductivity factor | W/(m·K) | 0.065 |
| Compression strength | MPa | 0.68 |
| Tensile strength | MPa | 0.27 |
| Water absorption rate (V/V) | ％ | 9 |
| Drying shrinkage value | mm/m | 0.75 |
| Coefficient of softing | 0.84 |
In composition proportion table 2, in cement based sandwich layer, the particle diameter of EPS particle is selected 4mm, and the particle diameter of the EPS particle in surface layer is selected 2mm, and in acrylic emulsion, acrylic acid solid content is 60%.
Example three:
Composition proportion table 3 unit: Kg
Test performance table 3
| Project | Unit | Performance indications |
| Dry density | Kg/m 3 | 270 |
| Thermal conductivity factor | W/(m·K) | 0.061 |
| Compression strength | MPa | 0.56 |
| Tensile strength | MPa | 0.18 |
| Water absorption rate (V/V) | ％ | 8.2 |
| Drying shrinkage value | mm/m | 0.72 |
| Coefficient of softing | 0.82 |
In composition proportion table 3, in cement based sandwich layer, the particle diameter of EPS particle is selected 4mm, and the particle diameter of the EPS particle in surface layer is selected 1mm, and in acrylic emulsion, acrylic acid solid content is 60%.
Example four:
Composition proportion table 4 unit: Kg
Test performance table 4
| Project | Unit | Performance indications |
| Dry density | Kg/m 3 | 264 |
| Thermal conductivity factor | W/(m·K) | 0.06 |
| Compression strength | MPa | 0.65 |
| Tensile strength | MPa | 0.20 |
| Water absorption rate (V/V) | ％ | 8.1 |
| Drying shrinkage value | mm/m | 0.70 |
| Coefficient of softing | 0.83 |
In composition proportion table 4, in cement based sandwich layer, the particle diameter of EPS particle is selected 3mm, and the particle diameter of the EPS particle in surface layer is selected 2mm, and in acrylic emulsion, acrylic acid solid content is 55%.
Cement based core fibre enhancing composite insulation boards indices in above-described embodiment all can meet the energy-saving index requirement of building exterior wall heat preserving plate.
Claims (1)
1. cement based fiber-reinforced composite warming plate, its structure is: cement based sandwich layer, the both sides of cement based sandwich layer are provided with fiberglass mesh layer of cloth, it is characterized in that: the outside of fiberglass mesh layer of cloth is provided with surface layer, the composition of described cement based sandwich layer comprises portland cement, water, granules of polystyrene, emulsion, water reducer, thickener, early strength agent, and its mass ratio is: 100:40～60:5～8:2～5:0.1～0.4:0.1～0.3:0.5～1; The composition of described surface layer comprises portland cement, water, granules of polystyrene, emulsion, water reducer, thickener, early strength agent, its mass ratio is: 100:35～50:2～4:2～5:0.2～0.5:0.2～0.4:0.5～1, water reducer in cement based sandwich layer and surface layer is polycarboxylate water-reducer, thickener is hydroxypropyl methyl cellulose ether, and early strength agent is sodium sulphate; Described emulsion is acrylic emulsion, and wherein acrylic acid solid content is more than or equal to 50% and be less than 65%; In described cement based sandwich layer, the particle diameter of granules of polystyrene is 3～5mm, and in surface layer, the particle diameter of granules of polystyrene is 1～2mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210364221.8A CN102850018B (en) | 2012-09-26 | 2012-09-26 | Cement-based fiber reinforcement composite insulation board |
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| CN201210364221.8A CN102850018B (en) | 2012-09-26 | 2012-09-26 | Cement-based fiber reinforcement composite insulation board |
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| CN102850018B true CN102850018B (en) | 2014-07-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107117874A (en) * | 2017-05-05 | 2017-09-01 | 同济大学 | A kind of preparation method of cement base inorganic polystyrene particle composite thermal insulation material |
| CN107698275A (en) * | 2017-09-12 | 2018-02-16 | 中晶蓝实业有限公司 | Heat insulating products and preparation method thereof |
| CN110713391A (en) * | 2019-10-11 | 2020-01-21 | 成都新柯力化工科技有限公司 | Light cement insulation board for energy-saving building and preparation method |
| CN114215207A (en) * | 2021-12-31 | 2022-03-22 | 梅蒎 | Sandwich type cement-based insulation board and preparation method thereof |
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| CN101906834A (en) * | 2009-06-05 | 2010-12-08 | 武汉国祥龙建材科技有限公司 | Method for constructing light-weight composite self-insulation wall |
| CN101613194A (en) * | 2009-06-13 | 2009-12-30 | 徐州工程学院 | High-flexibility polystyrene insulation mortar |
| CN101648799A (en) * | 2009-07-13 | 2010-02-17 | 河南省绿韵建材有限公司 | Compound thermal-insulation material and preparation method thereof |
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