CN101050350A - Composite waterproofing agent of gypsum - Google Patents
Composite waterproofing agent of gypsum Download PDFInfo
- Publication number
- CN101050350A CN101050350A CN 200710015415 CN200710015415A CN101050350A CN 101050350 A CN101050350 A CN 101050350A CN 200710015415 CN200710015415 CN 200710015415 CN 200710015415 A CN200710015415 A CN 200710015415A CN 101050350 A CN101050350 A CN 101050350A
- Authority
- CN
- China
- Prior art keywords
- gypsum
- water
- waterproofing agent
- composite waterproofing
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明属于建筑材料防水领域，涉及一种石膏复合防水剂，配比为：硬脂酸∶聚乙烯醇∶水∶复合乳化剂∶明矾石∶萘系减水剂∶羧酸盐∶为5－30∶2－10∶100－300∶0.05－0.5∶20－40∶5－8∶2－10。该石膏复合防水剂是一种乳浊液体，无毒、无刺激、均匀分散、易与水任意比混合。该石膏复合防水剂中的水乳液和无机盐防水剂减少了石膏固化后的毛细孔道，改变了石膏颗粒及毛细孔道的表面性质，从而增强了防水性能。该石膏复合防水剂可广泛应用于石膏板、石膏墙板、石膏砌块等石膏类制品的防水。The invention belongs to the field of waterproofing of building materials, and relates to a gypsum composite waterproofing agent. 30: 2-10: 100-300: 0.05-0.5: 20-40: 5-8: 2-10. The gypsum composite waterproofing agent is an emulsified liquid, non-toxic, non-irritating, uniformly dispersed, and easy to mix with water in any ratio. The water emulsion and the inorganic salt waterproofing agent in the gypsum composite waterproofing agent reduce the capillary channels after the gypsum is solidified, change the surface properties of the gypsum particles and the capillary channels, thereby enhancing the waterproof performance. The gypsum composite waterproofing agent can be widely used in the waterproofing of gypsum products such as gypsum boards, gypsum wallboards, and gypsum blocks.
Description
(1) technical field
Patent of the present invention belongs to material of construction waterproof field, be specifically related to a kind of can give the product that makes by the gypsum slip such as plasterboard or gypsum wallboard better waterproof can composite waterproofing agent of gypsum.
(2) background technology
Adopt gypsum to manufacture materials for wall, have advantages such as starting material wide material sources, the material produce energy consumption is low, processing performance is good.But gypsum also has the weakness of himself, and the most outstanding weakness is its goods poor water resistance.Major cause is:
(1) in the whipping process of gypsum slip, mixed far above semi-hydrated gypsum in theory and changed the needed water yield of dihydrate gypsum into, after the gypsum slurry sclerosis, redundant moisture will be overflowed from hardenite, thereby produce a large amount of tiny cracks and pore, and these holes connect mutually, as long as the gypsum hardenite surface touches moisture, moisture will soon be penetrated into hardenite inside, and moisture can change direction repeatedly and move in hardenite, causes the gypsum hardenite water-intake rate bigger;
(2) because dihydrate gypsum (CaSO
42H
2O) solubleness is compared much bigger with cement stone, so the water tolerance of gypsum hardenite is relatively poor.
Above-mentioned reason makes and the application of plastering in some occasion of water resistance difference has been subjected to bigger restriction, can not satisfy modern architecture and the people needs to the Modern Residence level of comfort.In order to overcome this defective, common way is to add single hydrophobic nature material in making plastering forward direction gypsum slip, such as pitch or wax etc., and must add with the form of emulsion, guarantees itself and gypsum slip thorough mixing.Adopt the example of the single hydrophobic emulsion of this admixture that introduction is all arranged in United States Patent (USP) 4-748-196,5-437-722.
Adopt single liquid-tight manner to improve the water resistance of plastering to a certain extent, but effect is still undesirable, and also has some shortcomings.For example generally unstable for organic emulsions such as wax-bitumen emulsions, separate easily becomes liquid phase (water) and floating thereon wax-pitch to coagulate the shape thing.These coagulate the shape thing and are difficult for passing through the mixing reemulsification, and then lump in the gypsum slip.After the gypsum aquation, emulsive wax-asphalt component does not ooze out from hardened gypsum small-particle, causes local hydrophobic emulsion skewness, causes the plastering water-repellancy poor; Simultaneously, because the existence of asphalt component makes wax-bitumen emulsion color be dark, make that the gypsum small-particle is dark in the gypsum product; In addition, pitch is generally obtained by crude refining, and its character can be variant, thereby has increased its unstable at emulsion use, gypsum product moulding and aspect of performance thereof.
(3) summary of the invention
The present invention is poor for the water resistance that solves plastering of the prior art, instability, the narrow problem of range of application, a kind of inorganic salts water-resisting agent that adds the water miscible liquid with hydrophobic, resistance effect in the gypsum slip to and can seal, block pore is provided, and a kind of composite waterproofing agent of gypsum of making according to a certain ratio by water miscible liquid and inorganic salts water-resisting agent.
Composite waterproofing agent of gypsum of the present invention is made water miscible liquid according to a certain weight ratio by a kind of water miscible liquid and inorganic salts water-resisting agent: the inorganic salts water-resisting agent is 20-32: 16-25;
Described water miscible liquid is made according to a certain weight ratio by following raw material, and stearic acid: polyvinyl alcohol: water: emulsifying agent is 5-30: 2-10: 100-300: 0.05-0.5; Described stearic acid structural formula is RCOOH, and R is the hydrogenation alkyl, (based on C16 and C18), and molecular weight is between 284-312; Described compound emulsifying agent is a kind of compound anion surfactant, and its HLB value is between 8-9, and the oleophilic group of emulsifying agent and stearic acid have good intermiscibility, with water certain lyotropy is arranged, and makes the emulsification system of formation stable.
This water miscible liquid can not only form organic film that blocks water in gypsum particle surface and gypsum hardenite in the gypsum process of setting, and form stronger hydrophobic surface.
Described inorganic salts water-resisting agent is made by following raw material: alunite: naphthalene water reducer: energy and Ca according to a certain ratio
2+The inorganic salts that effect generates throw out is 20-40: 5-8: 2-10
In the gypsum hydration process, this inorganic salts water-resisting agent on the one hand can with gypsum slip middle reaches from Ca
2+Reaction generates the inorganic flocculation sediment that is insoluble in water, stops up the pore in the gypsum hardenite, and some composition expands the pore that blocks in the gypsum hardenite in the inorganic salt on the other hand.
In the water-resisting agent of the invention described above, described energy and Ca
2+The inorganic salts that effect generates throw out is preferably carboxylate salt, and described naphthalene water reducer is the sodium salt of naphthalene sulfonic acidformaldehyde condensation product.
The present invention also can realize by following measure: be to be mixed and made into stearic acid by following materials of weight proportions: polyvinyl alcohol: water: emulsifying agent: alunite: naphthalene water reducer: carboxylate salt: be 5-30: 2-10: 100-300: 0.05-0.5: 20-40: 5-8: 2-10.
Usually earlier stearic acid, high-molecular polyvinyl alcohol polymkeric substance are dissolved in by certain weight ratio in 95-100 ℃ the water, add emulsifying agent, be emulsified into water miscible liquid under the high-speed stirring condition, add alunite, naphthalene water reducer, energy and Ca again
2+Effect generates the inorganic salts water-resisting agent of throw out and makes.
Beneficial effect of the present invention: this composite waterproofing agent of gypsum is a kind of emulsion liquid, and nontoxic, non-stimulated, homodisperse, Yi Yushui are arbitrarily than mixing.Water miscible liquid in this composite waterproofing agent of gypsum and inorganic salt water-resisting agent have reduced the capillary channel after the gypsum curing, have changed the surface properties of gypsum particle and capillary channel, make hardenite more closely knit, thereby have strengthened water resistance.
(4) embodiment
Embodiment one:
Terra alba gets Sample A at standard water requirement condition compacted under, and promptly weight part is, 100 parts in gypsum, 70 parts in water.(below be weight part)
Embodiment two:
Sample A among the comparative example one, moulding adds the sample B of stearic acid water miscible liquid, and promptly weight part is, 100 parts in gypsum, 65 parts in water, 5 parts of stearic acid emulsions.
Embodiment three
Sample B among the comparative example two, moulding add the sample C of stearic acid-polyvinyl alcohol emulsion, and promptly weight part is, 100 parts in gypsum, 65 parts in water, 5 parts of stearic acid-polyvinyl alcohol emulsion.
Embodiment four
Get in 100 parts in the water that 3 parts of 10 parts of C16 stearic acid, polyvinyl alcohol are dissolved in 100 ℃ of temperature, add compound anion surfactant, its HLB value is 0.1 part of 8 a emulsifying agent, be emulsified into water miscible liquid under the high-speed stirring condition, add 4 parts of composite waterproofing agent of gypsum of making of 8 parts of sodium salts, carboxylate salt of 20 parts of alunites, naphthalene sulfonic acidformaldehyde condensation product again.
The above-mentioned composite waterproofing agent of gypsum of making again with after 1300 parts of water mix, joins in 1970 parts in the gypsum and makes sample D.
Embodiment five
Get in 200 parts in the water that 5 parts of 20 parts of C18 stearic acid, polyvinyl alcohol are dissolved in 95 ℃ of temperature, add compound anion surfactant, the HLB value is 0.3 part of 9 a emulsifying agent, be emulsified into water miscible liquid under the high-speed stirring condition, add 8 parts of composite waterproofing agent of gypsum of making of 8 parts of sodium salts, carboxylate salt of 40 parts of alunites, naphthalene sulfonic acidformaldehyde condensation product again.
The above-mentioned composite waterproofing agent of gypsum of making joins in 3950 parts in the gypsum with 2600 parts in water and makes sample E.
According to the material mixture ratio among the embodiment, accurately measure each component, in the JS-195A mortar mixer, stirred 2 minutes, gypsum is evenly, the slurry of good fluidity, injects three gang mould tools and the vibratory compaction of 40 * 40 * 160mm, moulding demoulding after 1 hour.Sample after the demoulding is dried by the fire to over dry in 40 ± 2 ℃ of thermostat containers, put into moisture eliminator and be cooled to normal temperature, the over dry sample is carried out performance test.According to GB-9776-88 standard test method the over dry sample is divided into 2 groups, inserting temperature respectively is to soak 2h in 20 ± 0.5 ℃ of water, and 24h is at the water-intake rate of corresponding time build-in test sample.
The water-intake rate of these samples is as shown in the table:
| Test piece number (Test pc No.) | Immersion 2h water-intake rate (%) | Immersion 24h water-intake rate (%) |
| A | 38.26 | 45.75 |
| B | 5.21 | 9.25 |
| C | 2.58 | 7.26 |
| D | 0.83 | 3.10 |
| E | 0.85 | 3.17 |
The result shows in the table, with admixture composite waterproofing agent of gypsum not and compare with the single water-resisting agent of admixture, adopts composite waterproofing agent of gypsum of the present invention to utilize multipath waterproof thinking having significant improved action aspect the gypsum waterproof.
Claims (6)
1. composite waterproofing agent of gypsum is characterized in that: be to be that water miscible liquid and the inorganic salts water-resisting agent of 20-32: 16-25 is mixed and made into by weight proportion;
Described water miscible liquid is to be mixed and made into stearic acid by following materials of weight proportions: polyvinyl alcohol: water: emulsifying agent is 5-30: 2-10: 100-300: 0.05-0.5;
Described inorganic salts water-resisting agent is to be mixed and made into alunite by following materials of weight proportions: naphthalene water reducer: energy and Ca
2+The inorganic salts that effect generates throw out is 20-40: 5-8: 2-10.
2. composite waterproofing agent of gypsum according to claim 1 is characterized in that: described energy and Ca
2+The inorganic salts that effect generates throw out is a carboxylate salt.
3. composite waterproofing agent of gypsum according to claim 1 is characterized in that: described naphthalene water reducer is the sodium salt of naphthalene sulfonic acidformaldehyde condensation product.
4. composite waterproofing agent of gypsum according to claim 1 and 2 is characterized in that: described stearic structural formula is RCOOH, and R is the hydrogenation alkyl, and molecular weight is between 284-312; Described emulsifying agent is a kind of compound anion surfactant, and its HLB value is between 8-9.
5. composite waterproofing agent of gypsum according to claim 2, it is characterized in that: be to be mixed and made into stearic acid by following materials of weight proportions: polyvinyl alcohol: water: emulsifying agent: alunite: naphthalene water reducer: carboxylate salt is 5-30: 2-10: 100-300: 0.05-0.5: 20-40: 5-8: 2-10.
6. composite waterproofing agent of gypsum according to claim 1 is characterized in that: when described water miscible liquid was mixed, the temperature of water was 95-100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710015415 CN101050350A (en) | 2007-04-20 | 2007-04-20 | Composite waterproofing agent of gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710015415 CN101050350A (en) | 2007-04-20 | 2007-04-20 | Composite waterproofing agent of gypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101050350A true CN101050350A (en) | 2007-10-10 |
Family
ID=38781956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710015415 Pending CN101050350A (en) | 2007-04-20 | 2007-04-20 | Composite waterproofing agent of gypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101050350A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575197B (en) * | 2008-05-08 | 2011-11-23 | 遵义汉丰装饰材料有限责任公司 | Production method for moisture proof ardealite cavity block |
| CN101560076B (en) * | 2009-05-15 | 2012-07-04 | 济南大学 | Compound water-repellent gypsum additive |
| CN103011673A (en) * | 2012-12-17 | 2013-04-03 | 上海三瑞高分子材料有限公司 | Gypsum additive |
| CN104829161A (en) * | 2015-04-02 | 2015-08-12 | 安徽建筑大学 | Novel waterproof agent for building gypsum, and preparation method thereof |
| CN104891932A (en) * | 2015-05-26 | 2015-09-09 | 柳州市亿廷贸易有限责任公司 | Waterproof gypsum |
| CN105419429A (en) * | 2016-01-14 | 2016-03-23 | 烟台顺隆化工科技有限公司 | Inorganic salt waterproofing agent |
| CN105462389A (en) * | 2015-11-24 | 2016-04-06 | 武汉武达博硕园科技有限公司 | Preparation method of organic-inorganic composite waterproof agent for exterior-wall gypsum building materials |
| CN106186801A (en) * | 2016-07-19 | 2016-12-07 | 仇颖莹 | A kind of preparation method of composite modified waterproofing gypsum agent |
| CN107814505A (en) * | 2017-11-27 | 2018-03-20 | 桂林市和鑫防水装饰材料有限公司 | A kind of concrete waterproofer and preparation method thereof |
| CN116041017A (en) * | 2022-12-26 | 2023-05-02 | 中建西部建设新材料科技有限公司 | A kind of highly water-resistant phosphogypsum self-leveling mortar and its preparation method |
| CN116496020A (en) * | 2023-03-20 | 2023-07-28 | 贵州大学 | Method for reducing water absorption rate of phosphogypsum, adopted waterproof agent and preparation method |
-
2007
- 2007-04-20 CN CN 200710015415 patent/CN101050350A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575197B (en) * | 2008-05-08 | 2011-11-23 | 遵义汉丰装饰材料有限责任公司 | Production method for moisture proof ardealite cavity block |
| CN101560076B (en) * | 2009-05-15 | 2012-07-04 | 济南大学 | Compound water-repellent gypsum additive |
| CN103011673A (en) * | 2012-12-17 | 2013-04-03 | 上海三瑞高分子材料有限公司 | Gypsum additive |
| CN104829161A (en) * | 2015-04-02 | 2015-08-12 | 安徽建筑大学 | Novel waterproof agent for building gypsum, and preparation method thereof |
| CN104891932A (en) * | 2015-05-26 | 2015-09-09 | 柳州市亿廷贸易有限责任公司 | Waterproof gypsum |
| CN105462389A (en) * | 2015-11-24 | 2016-04-06 | 武汉武达博硕园科技有限公司 | Preparation method of organic-inorganic composite waterproof agent for exterior-wall gypsum building materials |
| CN105419429A (en) * | 2016-01-14 | 2016-03-23 | 烟台顺隆化工科技有限公司 | Inorganic salt waterproofing agent |
| CN106186801A (en) * | 2016-07-19 | 2016-12-07 | 仇颖莹 | A kind of preparation method of composite modified waterproofing gypsum agent |
| CN107814505A (en) * | 2017-11-27 | 2018-03-20 | 桂林市和鑫防水装饰材料有限公司 | A kind of concrete waterproofer and preparation method thereof |
| CN116041017A (en) * | 2022-12-26 | 2023-05-02 | 中建西部建设新材料科技有限公司 | A kind of highly water-resistant phosphogypsum self-leveling mortar and its preparation method |
| CN116496020A (en) * | 2023-03-20 | 2023-07-28 | 贵州大学 | Method for reducing water absorption rate of phosphogypsum, adopted waterproof agent and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101050350A (en) | Composite waterproofing agent of gypsum | |
| CN101560076B (en) | Compound water-repellent gypsum additive | |
| CN1082495C (en) | A method of preparing a gypsum board product with improved water resistance | |
| CN111320440B (en) | Anticorrosive quick-drying cement-based waterproof coating and preparation method thereof | |
| CN1211230A (en) | Gypsum wood fiber product having improved water resistance | |
| FR2997944A1 (en) | INSULATION BUILDING MATERIALS BASED ON PLANT ADDITION | |
| CN103415484B (en) | Process for producing hardened bodies from hydraulically setting compositions | |
| US20240076240A1 (en) | Insulating cement containing wall composition, insulating cement, and related atricles produced therefrom | |
| CN1210228C (en) | Green environment protection ligh wall material | |
| EP3442928A1 (en) | Aerated concrete moulded body comprising an overlayer and/or underlayer | |
| CN111417607A (en) | Disalt as a robust primary surfactant for calcium sulfate mixtures containing reconstituted gypsum | |
| RU2504527C1 (en) | Method of making all-purpose slab | |
| CN102276184A (en) | Retarding and water reducing agent for occlusal pile of subway drilling | |
| WO2019221914A1 (en) | Aqueous foam carrier and method of making the same | |
| CN100400459C (en) | Gypsum building block manufactured by chemical gypsum and industrial waste and manufacture method thereof | |
| FR2956397A1 (en) | Adjuvant, useful for hydraulic binder for the manufacture of elements for the construction field, comprises e.g. alkyl sulfonate, alphaolefinsulfate and/or alkylbenzenesulfate; and calcium salt soluble in water | |
| JPH11513358A (en) | Lignin based concrete additives | |
| US10730795B2 (en) | Aqueous foam carrier and method of making the same | |
| JP7401340B2 (en) | Concrete horizontal pour joint treatment method | |
| US3097955A (en) | Cement product | |
| US1863990A (en) | Composition construction or insulating material | |
| US4523954A (en) | Process for manufacturing cellular plaster and molded plaster articles | |
| CN116496020A (en) | Method for reducing water absorption rate of phosphogypsum, adopted waterproof agent and preparation method | |
| RU2393130C2 (en) | Method of making underlay | |
| CN1317217C (en) | Cement Concrete Multifunctional Auxiliary |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |