CN104086115A - Gypsum retarder capable of improving strength and binding strength of gypsum base material - Google Patents
Gypsum retarder capable of improving strength and binding strength of gypsum base material Download PDFInfo
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- CN104086115A CN104086115A CN201410333090.6A CN201410333090A CN104086115A CN 104086115 A CN104086115 A CN 104086115A CN 201410333090 A CN201410333090 A CN 201410333090A CN 104086115 A CN104086115 A CN 104086115A
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- gypsum
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- ether
- calcium sulphate
- cohesive strength
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Abstract
The invention provides a gypsum retarder capable of prolonging coagulation time of the gypsum base building material and improving strength and binding strength of the gypsum base material. The gypsum retarder comprises following components by weight percent: 20-45% of organic binding agent, 10-25% of animal albumen glue, 7-15% of sugar calcium, 0.5-1% of cellulose ether and 14-64.5% of caking inhibitor, wherein the animal albumen glue is one or more than one of blood albumen glue, fish skin glue, bone glue, lac or jelly glue which have the fineness of 200-300 meshes, and sugar calcium is a product prepared from waste molasses (which is a byproduct of sugar industry) and lime through emulsification. The gypsum retarder has advantages of simple formula, low cost, simple preparation method and strong adaptability to gypsum, and can be used for adjusting coagulation time of gypsum for building, phosphorus gypsum and desulphurized gypsum.
Description
Technical field
The present invention relates to a kind of conditioning agent of material of construction, relate in particular to a kind of conditioning agent time of coagulation of gypsum base building materials, more specifically relate to a kind of calcium sulphate retarder that extends gypsum base building materials time of coagulation, can improve gypsum substrate intensity and cohesive strength simultaneously.
Background technology
Semi-hydrated gypsum is a kind of inorganic coagulation material, can be applicable to production gypsum block, gypsum motar, gypsum adorned board, gesso etc., building materials of gypsum has lightweight, be out of shape little, production energy consumption is low, good stability of the dimension, the advantage such as do not ftracture when dry and harmless, but the development of the early strength of gypsum material is fast, the setting and harden time is short, conventionally at 5min-30min, will lose flowability, and the operable time that most of gypsum product needs is in 90min left and right, therefore need to postpone by mixing a certain amount of retardant the operable time of gypsum base material, but in retardant when there is delayed coagulation, can cause larger impact to gypsum intensity and cohesive strength.Conventional calcium sulphate retarder is mineral acid or organic acid, and this class retardant can cause the heavy losses of plastering intensity and cohesive strength conventionally, has therefore limited to a certain extent applying of building materials of gypsum.
Because animal proteinum glue has the effect that extends semi-hydrated gypsum aquation process, animal proteinum glue has very strong viscosifying power simultaneously, in recent years, people are also increasingly active to the research of building gypsum retarder of bone glue protein, from current research situation, can find out, the retarding effect of building gypsum retarder of bone glue protein is good, under lower volume, can obviously extend the time of coagulation of gypsum, simultaneously little a lot of than mineral acid or organic acid retardant to the loss of strength rate of plastering, but the intensity of plastering and loss of bond strength rate still can increase with the prolongation of slow setting time, this has the use of the gypsum base material of longer operable time to be still restricted to needs, adopt merely in addition bone glue protein as retardant, cost is also higher.
Summary of the invention
The object of this invention is to provide a kind of calcium sulphate retarder that extends gypsum base building materials time of coagulation, can improve gypsum substrate intensity and cohesive strength simultaneously.
For achieving the above object, a kind of calcium sulphate retarder that improves gypsum substrate intensity and cohesive strength of the present invention, comprises following each component and weight proportion:
Organic binder bond 20-45%
Animal proteinum glue 10-25%
Sugar calcium 7-15%
Ether of cellulose 0.5-1%
Anti-caking agent 14-64.5%
Above-mentioned animal proteinum glue is one or more in 200-300 object haemproteins glue, fish glue from skin, gelatine, shellac or fruit juice gel of fineness, the byproduct that sugared calcium is sugar industry--the product of molasses through making with lime emulsifying.
In order better to improve the cohesiveness of gypsum, the intensity of raising gypsum base material, above-mentioned organic binder bond preferably polyethylene alcohol powder and/or redispersable latex powder.
In order to make gypsum base material there is better water-retentivity, to keep the mobility of long period, above-mentioned ether of cellulose preferable methyl hydroxypropylcelluloether ether or methyl hydroxyethylcellulose ether.
Above-mentioned methylhydroxypropylcellulose ether and methyl hydroxyethylcellulose ether are instant type methylhydroxypropylcellulose ether and instant type methyl hydroxyethylcellulose ether.
Because the granularity of animal proteinum glue is thinner, in order better to prevent retardant caking, the preferred fineness of above-mentioned anti-caking agent is at 300-350 object dicalcium powder and/or ground dolomite.
Above-mentioned calcium sulphate retarder is the 0.05-0.25% of gypsum base material weight at the volume of gypsum base material.
The calcium sulphate retarder that improves gypsum substrate intensity and cohesive strength of the present invention, adopt animal proteinum glue and sugared calcium to carrying out comprehensive adjustment the time of coagulation of semi-hydrated gypsum, add a certain amount of organic binder bond simultaneously, when extending gypsum base building materials time of coagulation, can also improve intensity and the cohesive strength of gypsum base material, and by adding a certain amount of ether of cellulose and anti-caking agent, can guarantee mobility and dispersiveness that retardant has had, in addition, sugar calcium is the byproduct that utilizes sugar industry--molasses is through making with lime emulsifying, can greatly reduce the cost of retardant.Calcium sulphate retarder of the present invention, has the advantages such as simple, with low cost, the production technique of formula is simple, gypsum strong adaptability, can be applicable to the adjustment of time of coagulation of plaster of Paris, phosphogypsum, desulfurated plaster.
Embodiment
Be specific embodiments of the invention below, the calcium sulphate retarder that these embodiment just can improve gypsum substrate intensity and cohesive strength to the present invention is described in detail, not in order to limit the scope of the invention.
The sugared calcium that following examples adopt is the byproduct of sugar industry--the product of molasses through making with lime emulsifying.
Embodiment 1
1, formula
Polyvinyl alcohol 35%
Fineness is 250 object gelatine 10%
Sugar calcium 15%
Instant type methylhydroxypropylcellulose ether 1%
Fineness is 300 object dicalcium powders 39%
2, preparation
By said ratio, take starting material, in dry powder blender, stir 15min, packing.
3, performance test
Get three parts of Sichuan Long Yuan board plaster of Paris that specification is the same, a copy of it does not add retardant, the retardant that portion adds the embodiment 1 of plaster of Paris weight 0.2% to prepare, portion adds the citric acid of plaster of Paris weight 0.2%, according to GB/T 17669.4-1999 < < plaster of Paris, only starch the mensuration > > of physicals and the mensuration > > standard of GB/T 17669.3-1999 < < plaster of Paris mechanical property is tested plaster of Paris properties, result is as follows:
Embodiment 2
1, formula
Polyvinyl alcohol 25%
Fineness is 300 object haemproteins glue 20%
Sugar calcium 10%
Instant type methylhydroxypropylcellulose ether 0.5%
Fineness is 350 object ground dolomites 44.5%
2, preparation
By upper table proportioning, take starting material, in dry powder blender, stir 15min, packing.
3, performance test
Get three parts of Sichuan group of HTC industry by-product gypsum--phosphogypsums that specification is the same, a copy of it does not add retardant, the retardant that portion adds the embodiment 2 of phosphogypsum weight 0.2% to prepare, portion adds the citric acid of phosphogypsum weight 0.2%, according to GB/T 17669.4-1999 < < plaster of Paris, only starch the mensuration > > of physicals and the mensuration > > standard of GB/T 17669.3-1999 < < plaster of Paris mechanical property is tested phosphogypsum properties, result is as follows:
Embodiment 3
1, formula
Polyvinyl alcohol 35%
Fineness is 300 object haemproteins glue 25%
Sugar calcium 15%
Instant type methylhydroxypropylcellulose ether 0.7%
Fineness is 300 object dicalcium powders 24.3%
2, preparation
By upper table proportioning, take starting material, in dry powder blender, stir 15min, packing.
3, performance test
Get three parts of Chongqing Luo Huang power plant by-product gypsum--desulfurated plasters that specification is the same, a copy of it does not add retardant, the retardant that portion adds the embodiment 3 of desulfurated plaster weight 0.2% to prepare, portion adds the citric acid of phosphogypsum weight 0.2%, according to GB/T 17669.4-1999 < < plaster of Paris, only starch the mensuration > > of physicals and the mensuration > > standard of GB/T 17669.3-1999 < < plaster of Paris mechanical property is tested desulfurated plaster properties, result is as follows:
Test result by above embodiment 1,2,3 can be found out, retardant of the present invention, no matter be to add plaster of Paris, phosphogypsum to, or desulfurated plaster, retarding effect is all very obvious, aspect loss of strength rate, retardant of the present invention, not only the ultimate compression strength of gypsum almost not being affected, and can improve cohesive strength and the folding strength of gypsum, is a kind of calcium sulphate retarder being worth of widely use.
Claims (6)
1. a calcium sulphate retarder for gypsum substrate intensity and cohesive strength be can improve, following each component and weight proportion comprised:
Organic binder bond 20-45%
Animal proteinum glue 10-25%
Sugar calcium 7-15%
Ether of cellulose 0.5-1%
Anti-caking agent 14-64.5%
Wherein animal proteinum glue is one or more in 200-300 object haemproteins glue, fish glue from skin, gelatine, shellac or fruit juice gel of fineness, the byproduct that sugared calcium is sugar industry--the product of molasses through making with lime emulsifying.
2. the calcium sulphate retarder that improves gypsum substrate intensity and cohesive strength according to claim 1, is characterized in that: described organic binder bond is pva powder and/or redispersable latex powder.
3. the calcium sulphate retarder that improves gypsum substrate intensity and cohesive strength according to claim 1 and 2, is characterized in that: described ether of cellulose is methylhydroxypropylcellulose ether or methyl hydroxyethylcellulose ether.
4. the calcium sulphate retarder that improves gypsum substrate intensity and cohesive strength according to claim 3, is characterized in that: described methylhydroxypropylcellulose ether and methyl hydroxyethylcellulose ether are instant type methylhydroxypropylcellulose ether and instant type methyl hydroxyethylcellulose ether.
5. the calcium sulphate retarder that improves gypsum substrate intensity and cohesive strength according to claim 4, is characterized in that: described anti-caking agent is that fineness is at 300-350 object dicalcium powder and/or ground dolomite.
6. the calcium sulphate retarder that improves gypsum substrate intensity and cohesive strength according to claim 5, is characterized in that: described calcium sulphate retarder is the 0.05-0.25% of gypsum base material weight at the volume of gypsum base material.
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| CN201410333090.6A CN104086115B (en) | 2014-07-14 | 2014-07-14 | A kind of calcium sulphate retarder improving gypsum substrate intensity and cohesive strength |
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| CN201410333090.6A CN104086115B (en) | 2014-07-14 | 2014-07-14 | A kind of calcium sulphate retarder improving gypsum substrate intensity and cohesive strength |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105800987A (en) * | 2016-03-15 | 2016-07-27 | 苏州市兴邦化学建材有限公司 | Retarder for building plaster-base plastering gypsum and preparing method |
| CN105985044A (en) * | 2015-12-19 | 2016-10-05 | 济南源盛化工科技有限公司 | Gypsum additive |
| CN104773971B (en) * | 2015-04-08 | 2017-01-04 | 苏州市兴邦化学建材有限公司 | A kind of calcium sulphate retarder and preparation method thereof |
| CN106495517A (en) * | 2016-10-19 | 2017-03-15 | 河北科技大学 | A kind of Application way of slaughtering garbage |
| CN107082587A (en) * | 2017-05-18 | 2017-08-22 | 河北科技大学 | A kind of preparation method of calcium sulphate retarder |
| CN108249792A (en) * | 2018-01-24 | 2018-07-06 | 四川大学 | A kind of preparation method of polypeptide calcium sulphate retarder |
| CN109422477A (en) * | 2017-08-28 | 2019-03-05 | 白晓松 | It is a kind of using gypsum as the building retarder of major ingredient |
| CN111925180A (en) * | 2020-07-23 | 2020-11-13 | 中建材创新科技研究院有限公司 | Bonding gypsum |
| CN117303785A (en) * | 2023-10-18 | 2023-12-29 | 湖北英采化学有限公司 | PH universal type efficient gypsum retarder |
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| CN101993231A (en) * | 2009-08-19 | 2011-03-30 | 江苏仁和建材科技有限公司 | Method for preparing gypsum powder for ceramic mould by using desulfurized gypsum |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773971B (en) * | 2015-04-08 | 2017-01-04 | 苏州市兴邦化学建材有限公司 | A kind of calcium sulphate retarder and preparation method thereof |
| CN105985044A (en) * | 2015-12-19 | 2016-10-05 | 济南源盛化工科技有限公司 | Gypsum additive |
| CN105800987A (en) * | 2016-03-15 | 2016-07-27 | 苏州市兴邦化学建材有限公司 | Retarder for building plaster-base plastering gypsum and preparing method |
| CN106495517B (en) * | 2016-10-19 | 2018-11-06 | 河北科技大学 | A kind of utilization method of slaughtering waste |
| CN106495517A (en) * | 2016-10-19 | 2017-03-15 | 河北科技大学 | A kind of Application way of slaughtering garbage |
| CN107082587A (en) * | 2017-05-18 | 2017-08-22 | 河北科技大学 | A kind of preparation method of calcium sulphate retarder |
| CN107082587B (en) * | 2017-05-18 | 2019-04-19 | 河北科技大学 | A kind of preparation method of calcium sulphate retarder |
| CN109422477A (en) * | 2017-08-28 | 2019-03-05 | 白晓松 | It is a kind of using gypsum as the building retarder of major ingredient |
| CN108249792A (en) * | 2018-01-24 | 2018-07-06 | 四川大学 | A kind of preparation method of polypeptide calcium sulphate retarder |
| CN108249792B (en) * | 2018-01-24 | 2020-10-30 | 四川大学 | Preparation method of protein polypeptide gypsum retarder |
| CN111925180A (en) * | 2020-07-23 | 2020-11-13 | 中建材创新科技研究院有限公司 | Bonding gypsum |
| CN111925180B (en) * | 2020-07-23 | 2022-01-07 | 中建材创新科技研究院有限公司 | Bonding gypsum |
| CN117303785A (en) * | 2023-10-18 | 2023-12-29 | 湖北英采化学有限公司 | PH universal type efficient gypsum retarder |
| CN117303785B (en) * | 2023-10-18 | 2024-04-19 | 湖北英采化学有限公司 | PH universal type efficient gypsum retarder |
| CN117303785B8 (en) * | 2023-10-18 | 2024-06-28 | 湖北英采化学有限公司 | PH universal type efficient gypsum retarder |
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| CN104086115B (en) | 2016-01-13 |
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