CN103159444B - Modified ceiling board and preparation method thereof - Google Patents
Modified ceiling board and preparation method thereof Download PDFInfo
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- CN103159444B CN103159444B CN201310095599.7A CN201310095599A CN103159444B CN 103159444 B CN103159444 B CN 103159444B CN 201310095599 A CN201310095599 A CN 201310095599A CN 103159444 B CN103159444 B CN 103159444B
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- water
- resistant glass
- ceiling board
- acrylic resin
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Abstract
The invention discloses a modified ceiling board and a preparation method thereof. The invention is characterized in that the modified ceiling board comprises the following raw materials in parts by weight: 33-35 parts of kieselguhr, 24-26 parts of carbide slag, 8-10 parts of cement, 11-13 parts of alkali-resistant glass fiber, 8-10 parts of water-based acrylic resin and 10-12 parts of water. The preparation method comprises the following preparation steps: (1) mixing the water-based acrylic resin and the water; (2) debonding the alkali-resistant glass fiber; (3) preparing slurry; (4) forming a blank; (5) cutting the blank; (6) curing with high-temperature steam; (7) drying: drying the board through a drying machine until the water content is lower than 10%; and (8) sanding the surface of the board. The ceiling board prepared by the invention has the advantages of light weight, high strength, satisfactory water resistance and shock resistance and the like.
Description
Technical field
The present invention relates to a kind of ceiling board, particularly a kind of modification ceiling board and preparation method.
Background technology
Tradition ceiling board is to be made by certain operation by silica powder, lime, cement, asbestos, exists the shortcomings such as water-repellancy is poor, shock resistance is poor.Common ceiling board water-intake rate is up to 30% left and right, and 50% left and right that declined of the ceiling board folding strength after full water.In addition, concerning ceiling board, once water suction, its thermal conductivity will sharply rise, give goods deposit, pack, transport and on-the-spot stacking all brought very large trouble, also limited its range of application.If ceiling board is carried out to modification, make it have water-repellancy and higher shock resistance, pressure-proof and snap-resistent intensity etc., can promote the use of the nonweight-bearing body of wall of building etc., prospect certainly will be wide.
Water-borne acrylic resin can be conventional with cement, lime, gypsum etc. water-based cementing matter coordinate, improve intensity, toughness and water-repellancy.
Diatomite is a kind of biogenic silicastone, mainly by ancient times diatom remains form, its Chemical Composition is mainly SiO
2, contain a small amount of Al
2o
3, Fe
2o
3, CaO, MgO, K
2o, Na
2o, P
2o
5and organic matter.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of ceiling board of good physical performance.
For this reason, the raw material weight proportioning of ceiling board provided by the invention is: 33 parts～35 parts, diatomite, 24 parts～26 parts of carbide slags, 8 parts～10 parts of cement, 11 parts～13 parts of alkali resistant glass fibres, 8 parts～10 parts of water-borne acrylic resins, 10 parts～12 parts, water.
Cement adopts 32.5 grades of ordinary Portland cements, and diatomite fineness is more than 200 orders, and alkali resistant glass fibre length is less than 5cm, and in carbide slag, effective calcium amount is more than 70%.
The present invention adopts water-borne acrylic resin to carry out modification to ceiling board, that water-borne acrylic resin is replaced to a part of water in production process, make it stir and to combine fully with batching, then through operations such as mold pressing, steam press maintenances, make a kind of novel inorganic building material.
Modification is to be controlled by the process of the aquation of gelling material and acrylic resin film forming.Water out of segregation and the Ca in acrylic resin particle and ceiling board raw material in water-borne acrylic resin
2+, solid Ca (OH)
2and between surface of aggregate, there is chemical reaction, and strengthened bonding between material, improved the mechanical property of the ceiling board after sclerosis.Due to can be before the hydrated cementitious early stage film forming of water-borne acrylic resin, with the reaction of hydrated cementitious, moisture is fewer and feweri, just can form three-dimensional reticulated structure within a certain period of time, both saved the addition of water-borne acrylic resin, also in the water tolerance that to a certain degree keeps ceiling board.
In ceiling board autoclave at high temperature maintenance processes, at SiO
2-CaO-H
2in O reaction system, when insulation starts, first on diatomite surface, form the Calucium Silicate powder hydrated product CSH (I) of cancellated Calucium Silicate powder hydrated product CSH (II) and fiber fines shape or needle-like.Along with the prolongation of soaking time, diatomite constantly dissolves, and makes inner hollow, and CSH (II) and CSH (I) change into tobermorite crystal simultaneously.At last holding stage, tobermorite crystal all changes xonotlite substantially into, to reach the intensity of plate.In ceiling board making processes, add after water-borne acrylic resin, both can form a firmly integral body, ceiling board is played a very good protection, thereby the mechanical property pointers such as ceiling board resistance to compression, folding strength and toughness are all increased.
Water-borne acrylic resin modification improves significantly to the performance of ceiling board, the performance test results of the water-borne acrylic resin modification ceiling board that table 1 is different addition quantity, and compare with common ceiling board.In table, reflecting that water-borne acrylic resin mixes is significantly improved effect afterwards to ceiling board performance, but acquires a certain degree when volume, and ceiling board performance variation is little, and according to test-results, water-borne acrylic resin incorporation is selected 12 parts.
Table 1 different addition quantity water-borne acrylic resin ceiling board the performance test results
The present invention also provides the manufacture method of above-mentioned ceiling board, comprises following making step:
(1) mixing water based acrylic resin and water
Water-borne acrylic resin and 1/3 water are evenly mixed.
(2) alkali resistant glass fibre of loosening
All alkali resistant glass fibres are put into stirrer, then the 1/3 total water amount that adds is loosened.
(3) make slip
After complete 3 minutes of the alkali resistant glass fibre of loosening, drop in order carbide slag, cement, diatomite and remaining 1/3 water, then stir and within 3 minutes, make required slip, pulp density is 10%～12%.
Pulp density is controlled most important to slurry flowing process production technique, because aborning, is not adopt backwater to starching in bucket type pulp storage tank and blowing groove, and the concentration of slurrying is just the concentration of pulp flow port substantially, only has feed back beating consistency to have small portion impact.In pulping process, fiber is loosened water must be through metering, to guarantee that pulp density is in allowed band with backwater with making beating.
(4) become base
Be sent to mat forming machine and form slab through multi-stage vacuum dehydration, extruding.
(5) cut base
The slab of making is through cutting longitudinally and stacking after horizontal burr.
(6) high-temperature vapour maintenance
The steam-cured dolly that is placed with straight sheet pile is sent into and in autoclave, carried out steam press maintenance.Pressure is 0.9MPa～1MPa, and 180 ℃ of steam pressure temperature keep 10h at this pressure and temperature.
(7) dry
Sheet material drying machine is dried, and water ratio is lower than 10%.
(8) plate facing sand light
Plate face gets product after grinder carries out one side sanding.
The present invention has that lightweight, intensity are high, waterproof, shock resistance better, the premium properties such as not inflammable, sound insulation good, heat insulation strong, pollution-free, easy processing, product can bore, saws, follows closely, dig, dry construction operation etc., and can large-scale industrial production.
The hydrated product that carbide slag in base material of the present invention and diatomite generate in pressing steaming hydro-thermal reaction is mainly tobermorite crystal, has guaranteed product strength.Water-borne acrylic resin is able to take the steam press maintenance of 180 ℃ of high temperature, has met the requirement of ceiling board steam press maintenance under 180 ℃ of high temperature.
Embodiment
The present embodiment Raw weight proportion is: 34 parts, diatomite, 25 parts of carbide slags, 9 parts of cement, 12 parts of alkali resistant glass fibres, 9 parts of water-borne acrylic resins, 11 parts, water.
Cement adopts 32.5 grades of ordinary Portland cements, and diatomite fineness is more than 200 orders, and alkali resistant glass fibre length is less than 5cm, and in carbide slag, effective calcium amount is more than 70%.
Making step comprises:
(1) mixing water based acrylic resin and water
Water-borne acrylic resin and 1/3 water are evenly mixed
(2) alkali resistant glass fibre of loosening
All alkali resistant glass fibres are put into stirrer, then the 1/3 total water amount that adds is loosened.
(3) make slip
After complete 3 minutes of the alkali resistant glass fibre of loosening, drop in order carbide slag, cement, diatomite and remaining 1/3 water, then stir and within 3 minutes, make required slip.
(4) become base
Be sent to mat forming machine and form slab through multi-stage vacuum dehydration, extruding.
(5) cut base
The slab of making is through cutting longitudinally and stacking after horizontal burr.
(6) high-temperature vapour maintenance
The steam-cured dolly that is placed with straight sheet pile is sent into and in autoclave, carried out steam press maintenance.Pressure is 0.9MPa～1MPa, and 180 ℃ of steam pressure temperature keep 10h at this pressure and temperature.
(7) dry
Sheet material drying machine is dried, and water ratio is lower than 10%.
(8) plate facing sand light
Plate face gets product after grinder carries out one side sanding.
Claims (1)
1. a modification ceiling board, is characterized in that raw material weight proportioning is as follows: 33 parts～35 parts, diatomite, 24 parts～26 parts of carbide slags, 8 parts～10 parts of cement, 11 parts～13 parts of alkali resistant glass fibres, 8 parts～10 parts of water-borne acrylic resins, 10 parts～12 parts, water;
Cement adopts 32.5 grades of ordinary Portland cements, and diatomite fineness is more than 200 orders, and alkali resistant glass fibre length is less than 5cm, and in carbide slag, effective calcium amount is more than 70%;
Making step comprises:
(1) mixing water based acrylic resin and water
Water-borne acrylic resin and 1/3 water are evenly mixed;
(2) alkali resistant glass fibre of loosening
All alkali resistant glass fibres are put into stirrer, then the 1/3 total water amount that adds is loosened;
(3) make slip
After complete 3 minutes of the alkali resistant glass fibre of loosening, drop in order carbide slag, cement, diatomite and remaining 1/3 water, then stir and within 3 minutes, make required slip, pulp density is 10%～12%;
(4) become base
Be sent to mat forming machine and form slab through multi-stage vacuum dehydration, extruding;
(5) cut base
The slab of making is through cutting longitudinally and stacking after horizontal burr;
(6) high-temperature vapour maintenance
The steam-cured dolly that is placed with straight sheet pile is sent into and in autoclave, carried out steam press maintenance; Pressure is 0.9MPa～1MPa, and 180 ℃ of steam pressure temperature keep 10h at this pressure and temperature;
(7) dry
Sheet material drying machine is dried, and water ratio is lower than 10%;
(8) plate facing sand light
Plate face gets product after grinder carries out one side sanding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310095599.7A CN103159444B (en) | 2013-03-09 | 2013-03-09 | Modified ceiling board and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310095599.7A CN103159444B (en) | 2013-03-09 | 2013-03-09 | Modified ceiling board and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103159444A CN103159444A (en) | 2013-06-19 |
| CN103159444B true CN103159444B (en) | 2014-10-29 |
Family
ID=48583018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310095599.7A Expired - Fee Related CN103159444B (en) | 2013-03-09 | 2013-03-09 | Modified ceiling board and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103159444B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107089820A (en) * | 2017-06-05 | 2017-08-25 | 合肥聪亨新型建材科技有限公司 | A kind of ecological, environmental protective indoor suspended ceiling material capable of purifying air and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898097B (en) * | 2012-09-21 | 2014-04-09 | 安徽德禾建筑节能科技有限公司 | Preparation technology of plant ash-containing light partition board |
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2013
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| Publication number | Publication date |
|---|---|
| CN103159444A (en) | 2013-06-19 |
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