CN106082746A - A kind of additive improving gypsum crystal anti-corrosion performance - Google Patents
A kind of additive improving gypsum crystal anti-corrosion performance Download PDFInfo
- Publication number
- CN106082746A CN106082746A CN201610400680.5A CN201610400680A CN106082746A CN 106082746 A CN106082746 A CN 106082746A CN 201610400680 A CN201610400680 A CN 201610400680A CN 106082746 A CN106082746 A CN 106082746A
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- China
- Prior art keywords
- gypsum
- additive
- corrosion performance
- crystal
- corrosion
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Abstract
The invention discloses a kind of additive improving gypsum crystal anti-corrosion performance, be composited according to percentage by weight by following raw material: the calgon of 0 40%, the sodium tripolyphosphate of 0 20%, the sodium trimetaphosphate of 50 100% and the orthophosphates less than 1%.Disclosure sets forth a kind of additive improving gypsum crystal anti-corrosion performance and application thereof, this additive has the function of anti-inorganic ion corrosion, to Ca2+, SO42 has higher ligancy, block effect can be played to it, make Ca2+, SO42 is under the influence of outer ion, Ion transfer will not occur, so that gypsum crystal form keeps stable, improve the application performance of gypsum base building materials, solve the intensity that current gypsum base goods generally exist low, hardness is low, easily moisture regain, the big quality problems of amount of deflection, can apply to such as gypsum mortar, gypsum block, gypsum brick, Self-leveling gypsum, in all gypsum base building materials such as gypsum putty and Thistle board.
Description
Technical field
The present invention relates to gypsum base building materials production field, specifically a kind of improve outside gypsum crystal anti-corrosion performance
Add agent.
Background technology
Gypsum base building materials are wide variety of construction materials, have the performance of good thermal insulation sound insulation, gypsum base building materials system
Product are typically that dispensing slurrying is molded with after semi-hydrated gypsum by dihydrate gypsum calcining, after semi-hydrated gypsum is reduced to dihydrate gypsum, and two
Water gypsum crystal forms aciculiform, the network-like bridging arrangement of long cylindricality, thus forms the mechanical property of gypsum base goods；But,
Gypsum crystal be not as iron and steel crystal structure the same can be continual and steady existence, through displaying of regular period, especially inhale
After receiving portions moisture in air, corrosion, crystal habit coarsening can occur under the influence of inorganic ion, become by acicular crystal
For short cylinder crystal, network-like structure is destroyed, and causes that gypsum base product strength is low, hardness is low and yielding, and then impact
Product quality, is the industry difficult problem that gypsum-based construction material generally exists.
Content of the invention
For solving the technical problem of above-mentioned existence, the invention provides and a kind of improve the additional of gypsum crystal anti-corrosion performance
Agent, can persistently keep the needle-like long column shape crystalline structure of gypsum crystal, keep network-like distributed architecture, it is to avoid gypsum base building materials
The quality problems occurring in work progress, facilitation is played in the development to gypsum base building material industry.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is:
A kind of additive improving gypsum crystal anti-corrosion performance, is composited according to percentage by weight by following raw material:
The calgon of 0-40%, the sodium tripolyphosphate of 0-20%, the sodium trimetaphosphate of 50-100% and the orthophosphoric acid less than 1%
Salt.
A kind of application of the additive improving gypsum crystal anti-corrosion performance, it is 5-10% that additive is diluted to concentration,
Pulping process adds to gesso according to mass percent 0.02-1%, is used for making gypsum base building materials.
The preferred 0.02-0.04% of adding proportion in gesso for the described additive.
Disclosure sets forth a kind of additive improving gypsum crystal anti-corrosion performance and application thereof, this additive has anti-
The function of inorganic ion corrosion, to Ca2+、SO4 2-There is higher ligancy, block effect can be played to it, make Ca2+、
SO4 2-Under the influence of outer ion, Ion transfer will not occur, so that gypsum crystal form keeps stable, improve gypsum
The application performance of capital construction material, solve that the intensity that current gypsum base goods generally exist is low, hardness is low, easy moisture regain, amount of deflection big
Quality problems, can apply to such as gypsum mortar, gypsum block, gypsum brick, Self-leveling gypsum, gypsum putty and Thistle board
Etc. in all gypsum base building materials.
Brief description
Fig. 1 is the ESEM comparison figure that in embodiment 1, the present invention is applied to gypsum board industry；
Fig. 2 is the ESEM comparison figure that in embodiment 2, the present invention is applied to gypsum block industry；
Fig. 3 is the ESEM comparison figure that in embodiment 3, the present invention is applied to gypsum self-leveling mortar.
Detailed description of the invention
Describe the present invention with specific embodiment below in conjunction with the accompanying drawings:
The invention discloses a kind of additive improving gypsum crystal anti-corrosion performance, multiple according to percentage by weight by following raw material
Conjunction forms:
The calgon of 0-40%, the sodium tripolyphosphate of 0-20%, the sodium trimetaphosphate of 50-100% and the orthophosphoric acid less than 1%
Salt.
The invention also discloses the application of a kind of additive improving gypsum crystal anti-corrosion performance, additive is diluted to
Concentration is 5-10%, adds to gesso according to mass percent 0.02-1%, be used for making gypsum base in pulping process
Building materials.
The preferred 0.02-0.04% of adding proportion in gesso for the described additive.
Embodiment 1:
Apply the present invention to Thistle board production industry, use 10% calgon, 15% sodium tripolyphosphate, 75% 3 inclined
Sodium phosphate, 0.2% orthophosphates carry out compounding preparation cost invention additive, are diluted by 10% concentration, and adding proportion is
0.03%, with mass fraction 0.5% dispersant, 0.1% citric acid, 0.15% foaming agent, 70% water paste ratio and semi-hydrated gypsum dispensing system
Slurry, carries out laminating shaping with two-layer mask paper, is fabricated to the Thistle board of thickness 9.5mm, then is done by cutting off dry packing
Become finished product, be fabricated to the test specimen of 300mm × 600mm with the gypsum board sample without additive, at 23 DEG C, relative humidity
The constant-temperature constant-humidity environment of 90% is placed 72 hours, and sample carries out the contrast of mechanical property and stereoscan photograph.Following table is to be measured
Sample is tested with blank sample taking-up part, draws concrete test data,
。
In the case that other techniques are constant, after adding additive, Sample Gypsum plate mechanical property is almost consistent with raw sample,
And it is not added with the sample of additive, every mechanical property is decreased obviously；After adding additive, properties of product significantly improve, and meet
Market application demand.
Three samples before and after raw sample, interpolation additive are scanned the photo analysis of Electronic Speculum, observe gypsum crystal
The change of form, contrast picture is as shown in Figure 1.
Can be seen that the gypsum crystal not adding additive was placed after 72h days, crystal modification is serious, from needle-like become block,
The irregular form such as sheet；And the Sample crystals structure adding additive only has few part to change, main body is still
Acicular texture, overlap joint is good, keeps consistent with raw sample crystal habit.
Embodiment 2:
Apply the present invention to gypsum block production industry, use 15% calgon, 5% sodium tripolyphosphate, 80% 3 metaphosphoric acid
Sodium, 0.7% orthophosphates carry out compounding preparation cost invention additive, are diluted by 10% concentration, and adding proportion is 0.04%,
And mix with mass fraction 0.5% dispersant, 0.6% cellulose, 0.3% wood fibre, 0.35% starch, carry out appearance and size
Solid gypsum block for 600mm × 500mm × 100mm specification produces, and the sample before and after interpolation additive is positioned over constant temperature
(temperature 23 DEG C, humidity 90%) 72 hours in humidity room, and it is scanned Electronic Speculum and mechanical property contrast together with raw sample.Under
Table is that testing sample carries out related mechanical property test to blank sample taking-up part, draws concrete experimental data.
。
ESEM comparison diagram is as shown in Figure 2.
It can be seen that after application additive, gypsum block crystal comparison rule, have almost no change compared with raw sample,
The breaking load of gypsum block is very stable, and coefficient of softing varies less；And do not use the gypsum crystal of additive to have occurred and that change
Changing, disorderly and unsystematic, crystal is thick irregularly, and breaking load and coefficient of softing substantially reduce.
Embodiment 3:
Apply the present invention to Self-leveling gypsum mortar production industry, use 40% calgon, 10% sodium tripolyphosphate, 50%
Sodium trimetaphosphate, 0.5% orthophosphates carry out compounding preparation cost invention additive, are diluted by 5% concentration, and adding proportion is
1%, with mass fraction 0.5% dispersant, 0.05% adhesive, 0.45% water-loss reducer, 0.3% cellulosic ether, 70% water paste ratio and half
Water gypsum dispensing slurrying, sample is at 23 DEG C, and the constant-temperature constant-humidity environment of relative humidity 90% is placed 72 hours, and sample is carried out mechanics
Performance and the contrast of stereoscan photograph.Following table is that testing sample makes a service test with blank sample taking-up part, must provide
The test data of body, stereoscan photograph contrast as it is shown on figure 3,
。
Embodiment 4:
Apply the present invention to gypsum block production industry, use 30% calgon, 20% sodium tripolyphosphate, 50% 3 inclined phosphorus
Acid sodium, 0.9% orthophosphates carry out compounding preparation cost invention additive, are diluted by 7% concentration, and adding proportion is 0.02%,
And mix with mass fraction 0.8% dispersant, 0.5% cellulose, 0.8% wood fibre, 0.7% starch, carry out appearance and size
Solid gypsum block for 600mm × 500mm × 100mm specification produces, and the sample before and after interpolation additive is positioned over constant temperature
(temperature 23 DEG C, humidity 90%) 72 hours in humidity room, and carry out mechanical property contrast together with raw sample.Following table is for treating test sample
Product carry out related mechanical property test to blank sample taking-up part, draw concrete experimental data,
。
It can be seen that after application additive, three indexs of goods have and are obviously improved, and gypsum block crystal changes very
Little, almost without corrosion, form is regular, consistent with raw sample.
Therefore additive of the present invention can play the crystalline structure persistently keeping gypsum crystal, keeps network-like distribution knot
Structure, so solve gypsum base goods and generally have that intensity is low, hardness is low, quality problems that easy moisture regain, amount of deflection are big.
Embodiment 5:
Apply the present invention to gypsum block production industry, use 100% sodium trimetaphosphate, 0.8% orthophosphates to carry out compounding system
Standby become additive of the present invention, be diluted by 10% concentration, adding proportion is 0.05%, and with mass fraction 0.8% dispersant,
0.5% cellulose, 0.8% wood fibre, 0.7% starch mix, and carrying out appearance and size is 600mm × 500mm × 100mm rule
The solid gypsum block of lattice produces, and the sample before and after interpolation additive is positioned over constant temperature and humidity indoor (temperature 23 DEG C, humidity
90%) 72 hours, and carry out mechanical property contrast together with raw sample, it can be seen that after application additive, three indexs of goods
Having and being obviously improved, gypsum block crystal varies less, and almost without corrosion, form is regular, consistent with raw sample.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, and this technology is led
Change, remodeling, interpolation or the replacement that the technical staff in territory is made in the essential scope of the present invention, also should belong to the present invention's
Protection domain.
Claims (3)
1. the additive improving gypsum crystal anti-corrosion performance, it is characterised in that by following raw material according to percentage by weight
Compound composition:
The calgon of 0-40%, the sodium tripolyphosphate of 0-20%, the sodium trimetaphosphate of 50-100% and the orthophosphoric acid less than 1%
Salt.
2. the application of a kind of additive improving gypsum crystal anti-corrosion performance as claimed in claim 1, it is characterised in that will
It is 5-10% that additive is diluted to mass concentration, adds to gesso according to mass percent 0.02-1% in pulping process
In, it is used for making gypsum base building materials.
3. the application of a kind of additive improving gypsum crystal anti-corrosion performance according to claim 2, it is characterised in that
The preferred 0.02-0.04% of adding proportion in gesso for the described additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610400680.5A CN106082746A (en) | 2016-06-08 | 2016-06-08 | A kind of additive improving gypsum crystal anti-corrosion performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610400680.5A CN106082746A (en) | 2016-06-08 | 2016-06-08 | A kind of additive improving gypsum crystal anti-corrosion performance |
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|---|---|
| CN106082746A true CN106082746A (en) | 2016-11-09 |
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|---|---|---|---|
| CN201610400680.5A Pending CN106082746A (en) | 2016-06-08 | 2016-06-08 | A kind of additive improving gypsum crystal anti-corrosion performance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439856A (en) * | 2018-05-16 | 2018-08-24 | 云南宇耐科技有限公司 | A kind of anti-water hardening compound additive of the long-acting modification of ardealite and preparation method thereof |
| CN110759659A (en) * | 2018-07-27 | 2020-02-07 | 北新集团建材股份有限公司 | Coagulant and preparation method and application thereof |
| CN113443886A (en) * | 2021-07-20 | 2021-09-28 | 江苏一夫科技股份有限公司 | Preparation method of corrosion-resistant ceramic gypsum mold |
| CN113845329A (en) * | 2020-06-28 | 2021-12-28 | 江苏苏博特新材料股份有限公司 | Anti-corrosion additive for tunnel lining concrete, preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318039A (en) * | 1998-07-30 | 2001-10-17 | 美国石膏公司 | Gypsum-contg product having increased resistance to permanent deformation and method and compsn. for producing it |
| CN101184704A (en) * | 2005-04-27 | 2008-05-21 | 美国石膏公司 | Wet gypsum accelerator and methods, composition, and product relating thereto |
| CN103214225A (en) * | 2013-03-01 | 2013-07-24 | 嘉信(香港)工程有限公司 | Green and environment-friendly wall system |
| CN105347768A (en) * | 2015-11-03 | 2016-02-24 | 北京建筑材料科学研究总院有限公司 | Gypsum powder for pressure slip-casting mold |
-
2016
- 2016-06-08 CN CN201610400680.5A patent/CN106082746A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318039A (en) * | 1998-07-30 | 2001-10-17 | 美国石膏公司 | Gypsum-contg product having increased resistance to permanent deformation and method and compsn. for producing it |
| CN101184704A (en) * | 2005-04-27 | 2008-05-21 | 美国石膏公司 | Wet gypsum accelerator and methods, composition, and product relating thereto |
| CN103214225A (en) * | 2013-03-01 | 2013-07-24 | 嘉信(香港)工程有限公司 | Green and environment-friendly wall system |
| CN105347768A (en) * | 2015-11-03 | 2016-02-24 | 北京建筑材料科学研究总院有限公司 | Gypsum powder for pressure slip-casting mold |
Non-Patent Citations (1)
| Title |
|---|
| 刘红飞: "《建筑外加剂》", 28 February 2006, 北京：中国建筑工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439856A (en) * | 2018-05-16 | 2018-08-24 | 云南宇耐科技有限公司 | A kind of anti-water hardening compound additive of the long-acting modification of ardealite and preparation method thereof |
| CN110759659A (en) * | 2018-07-27 | 2020-02-07 | 北新集团建材股份有限公司 | Coagulant and preparation method and application thereof |
| CN113845329A (en) * | 2020-06-28 | 2021-12-28 | 江苏苏博特新材料股份有限公司 | Anti-corrosion additive for tunnel lining concrete, preparation method and application thereof |
| CN113443886A (en) * | 2021-07-20 | 2021-09-28 | 江苏一夫科技股份有限公司 | Preparation method of corrosion-resistant ceramic gypsum mold |
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Application publication date: 20161109 |