CN118239746A - Method for regulating gypsum board production - Google Patents
Method for regulating gypsum board production Download PDFInfo
- Publication number
- CN118239746A CN118239746A CN202410339414.0A CN202410339414A CN118239746A CN 118239746 A CN118239746 A CN 118239746A CN 202410339414 A CN202410339414 A CN 202410339414A CN 118239746 A CN118239746 A CN 118239746A
- Authority
- CN
- China
- Prior art keywords
- gypsum board
- regulating
- board production
- foam stabilizer
- foaming agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 55
- 239000010440 gypsum Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 14
- 239000011148 porous material Substances 0.000 claims abstract description 29
- 239000006260 foam Substances 0.000 claims abstract description 25
- 239000003381 stabilizer Substances 0.000 claims abstract description 25
- 239000004088 foaming agent Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 238000005187 foaming Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000000344 soap Substances 0.000 claims abstract description 8
- 239000011734 sodium Chemical class 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- -1 alkenyl sulfonate Chemical compound 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical class [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical class [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 2
- 150000008051 alkyl sulfates Chemical class 0.000 claims 1
- 229940083542 sodium Drugs 0.000 claims 1
- 229940083575 sodium dodecyl sulfate Drugs 0.000 claims 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims 1
- 239000004604 Blowing Agent Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000008149 soap solution Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
A method of regulating gypsum board production comprising the steps of: step 100, preparing a foaming agent mixture; step 200, foaming the foaming agent mixture to form soap liquid, and forming a gypsum board core by utilizing the soap liquid; step 300, detecting the pore size in the gypsum board core; and, step 400, adjusting the proportion of foam stabilizer in the foaming agent mixture according to the pore size. The method of the invention can adjust the size distribution of the air holes in the gypsum board core, so that the size distribution is more uniform, and the size of the air holes can be adjusted.
Description
Technical Field
The present invention relates to the production of gypsum board, and in particular to a method of regulating the production of gypsum board.
Background
To reduce the weight of the gypsum board, the gypsum core within the gypsum board typically includes a distribution of air voids. The air holes displace a proportion of the panel solid material, thereby making the panel lighter and easier to handle. While the air holes may limit certain performance characteristics of the gypsum board, such as the mechanical strength of the board, the addition of air holes in the gypsum core may be controlled such that the advantage in terms of weight reduction outweighs any adverse consequences that the air holes may have on the performance characteristics of the gypsum board. For example, controlling both the size of the air holes and the overall density of the gypsum board can affect the performance characteristics of the board.
The primary technical problem of producing the light gypsum board is to solve the problem of consistency of the air holes of the board core, and the uniform and stable distribution of the air holes of the gypsum board core is always a technical bottleneck for limiting the light weight of the gypsum board.
Disclosure of Invention
The invention aims to provide a method for adjusting the size and consistency of the air holes of a gypsum board core.
To this end, the invention provides a method of regulating gypsum board production comprising the steps of:
Step 100, preparing a foaming agent mixture;
step 200, foaming the foaming agent mixture to form soap liquid, and forming a gypsum board core by utilizing the soap liquid;
step 300, detecting the pore size in the gypsum board core; and
Step 400, adjusting the proportion of foam stabilizer in the foaming agent mixture according to the pore size.
Wherein the proportion of the foam stabilizer is 3-50% of the total weight of the foaming agent mixture.
Further, in the step 100, the blowing agent mixture includes an unstable blowing agent and the foam stabilizer. Wherein the labile foaming agent is sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium 12-18 alkyl sulfate ester or a combination thereof. Wherein the foam stabilizer is alpha sodium alkenyl sulfonate.
Wherein, the step 300 further comprises:
Step 310, obtaining a sampled image of the gypsum board core; and
Step 320, measuring a median size distribution of the pores in the sampled image.
And, the step 400 further includes:
Step 410, reducing the proportion of the foam stabilizer when the size intermediate value is less than an expected value; and
Step 420, increasing the proportion of the foam stabilizer when the size median is greater than the expected value.
Or the step 300 further comprises:
step 330, measuring the size deviation value of the air holes in the sampling image.
And, the step 400 further includes:
step 430, increasing the proportion of the foam stabilizer when the dimensional deviation value is greater than an expected value.
In addition, in step 400, the air flow rate and the foaming machine rotation speed are maintained.
The method of the invention can adjust the size distribution of the air holes in the gypsum board core, so that the size distribution is more uniform, and the size of the air holes can be adjusted.
Detailed Description
The following describes specific embodiments of the present invention.
A method of regulating gypsum board production comprising the steps of:
Step 100, preparing a foaming agent mixture;
step 200, foaming the foaming agent mixture to form soap liquid, and forming a gypsum board core by utilizing the soap liquid;
step 300, detecting the pore size in the gypsum board core; and
Step 400, adjusting the proportion of foam stabilizer in the foaming agent mixture according to the pore size.
Wherein, in step 100, the blowing agent mixture comprises an unstable blowing agent and a foam stabilizer. The unstable blowing agent may be any suitable existing product and is commercially available. Specifically, the labile foaming agent is sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium 12-18 alkyl sulfate ester salt, or a combination thereof. The foam stabilizer is sodium alpha alkenyl sulfonate, which is commercially available.
The inventors of the present application have found that the ratio of foam stabilizer is inversely related to the pore diameter in the final gypsum board core, with other process parameters remaining unchanged. That is, the higher the foam stabilizer ratio, the smaller the pore diameter of the resulting gypsum board core. Thus, the pore diameter of the gypsum board core can be adjusted by adjusting the proportion of foam stabilizer.
In step 200, foaming may be performed using a conventional foaming apparatus. For example, a conventional foaming machine. The foaming process requires mixing the foaming machine mixture with water and introducing air. Foaming can be carried out using methods common in the art. And introducing the soap solution formed after foaming into a mixer, and stirring and mixing with other raw materials to form gypsum slurry. The gypsum slurry is used to form a gypsum board core. In the present application, the term "gypsum board core" is used to refer to both the gypsum slurry used to form the gypsum board core and the formed gypsum board core.
Step 300 further includes step 310 of acquiring a sampled image of the gypsum board core. The sampled image may be acquired using any suitable image capture device. The sample image may be an image for gypsum slurry or a cut-out image of the formed gypsum board core, as long as it can be used to determine the pore size.
The diameter and area of the pores in the picture were identified using software, which is commercially available. Among them, pore diameters D10, D50, and D90 are determined. The D10 is the pore diameter corresponding to the pore diameter distribution number reaching 10%, and the physical meaning is that the pores with the diameter smaller than the D10 account for 10%. Similarly, D50 is the pore diameter corresponding to a pore diameter distribution of up to 50%, and has the physical meaning that the number of pores with a diameter smaller than D50 is 50% and the number of pores with a diameter larger than D50 is 50%. D90 is the corresponding pore diameter when the pore diameter distribution number reaches 50%, and the physical meaning is that the pore number with the diameter smaller than D90 accounts for 90%. That is, D50 is the median pore diameter distribution.
The offset value, also referred to as SPAN, is obtained using equation 1 below.
Span= (D90-D10)/D50 formula 1
The smaller the deviation value obtained, i.e. the span is closer to 0, the more uniform the pores are, and the higher the dimensional uniformity is.
Thus, the median size distribution, i.e., D50, and the size deviation, i.e., SPAN, can be obtained by measurement.
For a particular lightweight gypsum board product, the desired value of board core air hole size can generally be set to enable the target board weight to be achieved. And, there is also typically an expected value set for the uniformity of the board core air holes.
Thus, in step 400, the proportion of the foam stabilizer is decreased when the size median is less than the expected value, and the proportion of the foam stabilizer is increased when the size median is greater than the expected value. In addition, when the dimensional deviation value is greater than an expected value, the proportion of the foam stabilizer is increased.
Wherein the proportion of the foam stabilizer is adjusted to 3-50% of the total weight of the foaming agent mixture.
By the above method, the pore size in the gypsum board core can be adjusted to a desired value or close to a desired value.
In the above description, details of the technical solution of the present invention are set forth, however, it will be understood by those skilled in the art that the present invention is not limited to the specific details set forth in the above embodiments, but may be varied within the scope defined by the claims.
Claims (10)
1. A method of regulating gypsum board production comprising the steps of:
Step 100, preparing a foaming agent mixture;
step 200, foaming the foaming agent mixture to form soap liquid, and forming a gypsum board core by utilizing the soap liquid;
step 300, detecting the pore size in the gypsum board core; and
Step 400, adjusting the proportion of foam stabilizer in the foaming agent mixture according to the pore size.
2. The method of regulating gypsum board production of claim 1, wherein in step 100, the foaming agent mixture comprises an unstable foaming agent and the foam stabilizer.
3. The method of regulating gypsum board production of claim 1, wherein the labile foaming agent is sodium dodecylbenzene sulfonate, sodium dodecylsulfate, sodium salt of 12-18 alkyl sulfate, or a combination thereof.
4. The method of regulating gypsum board production of claim 2, wherein the foam stabilizer is sodium alpha alkenyl sulfonate.
5. The method of regulating gypsum board production of claim 1, wherein step 300 further comprises:
Step 310, obtaining a sampled image of the gypsum board core; and
Step 320, measuring a median size distribution of the pores in the sampled image.
6. The method of adjusting gypsum board production as set forth in claim 5, wherein said step 400 further comprises:
Step 410, reducing the proportion of the foam stabilizer when the size intermediate value is less than an expected value; and
Step 420, increasing the proportion of the foam stabilizer when the size median is greater than the expected value.
7. The method of regulating gypsum board production as claimed in claim 5, wherein said step 300 further comprises:
step 330, measuring the size deviation value of the air holes in the sampling image.
8. The method of regulating gypsum board production as claimed in claim 7, wherein said step 400 further comprises:
step 430, increasing the proportion of the foam stabilizer when the dimensional deviation value is greater than an expected value.
9. The method of regulating gypsum board production of claim 1, wherein the foam stabilizer is present in a proportion of from 3% to 50% by weight of the total weight of the foaming agent mixture.
10. The method of adjusting gypsum board production of any one of claims 1-9, wherein in step 400, air flow and foaming machine speed are maintained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410339414.0A CN118239746A (en) | 2024-03-22 | 2024-03-22 | Method for regulating gypsum board production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410339414.0A CN118239746A (en) | 2024-03-22 | 2024-03-22 | Method for regulating gypsum board production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118239746A true CN118239746A (en) | 2024-06-25 |
Family
ID=91561896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410339414.0A Pending CN118239746A (en) | 2024-03-22 | 2024-03-22 | Method for regulating gypsum board production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118239746A (en) |
-
2024
- 2024-03-22 CN CN202410339414.0A patent/CN118239746A/en active Pending
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