CN107964296B - High-elongation sound-insulation bi-component water-based waterproof coating and preparation method thereof - Google Patents
High-elongation sound-insulation bi-component water-based waterproof coating and preparation method thereof Download PDFInfo
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- CN107964296B CN107964296B CN201710588896.3A CN201710588896A CN107964296B CN 107964296 B CN107964296 B CN 107964296B CN 201710588896 A CN201710588896 A CN 201710588896A CN 107964296 B CN107964296 B CN 107964296B
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D131/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
- C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09D131/04—Homopolymers or copolymers of vinyl acetate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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Abstract
The invention discloses a high-elongation sound-insulation double-component water-based waterproof coating and a preparation method thereof, and relates to the technical field of waterproof coatings. The waterproof coating consists of liquid material and powder material; the liquid material comprises the following components in percentage by mass: 80-90% of VAE emulsion, 1-3% of defoaming agent, 0.1-0.3% of mildew preventive and 10-20% of water; the powder material comprises the following components in percentage by mass: 50-70% of ash cement with the strength of 42.5, 2-4% of sodium hydroxide powder, 10-20% of 325-mesh quartz powder, 1-3% of water reducing agent and 20-30% of fly ash. The waterproof coating has excellent sound insulation effect and high elongation property.
Description
Technical Field
The invention relates to the field of waterproof coatings, in particular to a high-elongation sound-insulation two-component water-based waterproof coating and a preparation method thereof.
Background
With the continuous development and refinement of the domestic coating industry, the market has more and more outstanding requirements on coatings with special functions, and the waterproof coatings with high performance and wide application are necessary to meet the requirements of various industries on waterproof coatings.
The water-based waterproof coating can play a role in sound insulation and noise reduction by adding the sound insulation material, but the coal ash with a porous structure has small stacking density and large particle gaps, so that the coal ash has large oil absorption, and the emulsion has poor coating effect and filling property, so that the extension performance of the waterproof coating is sharply attenuated, and the waterproof effect of the waterproof coating is finally influenced.
Therefore, there is a need to develop a waterproof coating material having both excellent soundproof effect and elongation property.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a high-elongation sound-insulation two-component water-based waterproof coating and a preparation method thereof, and mainly aims to improve indoor sound insulation and waterproof effects.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
on one hand, the embodiment of the invention provides a high-elongation sound-insulation double-component water-based waterproof coating, which consists of a liquid material and a powder material; the liquid material comprises the following components in percentage by mass: 80-90% of VAE emulsion, 1-3% of defoaming agent, 0.1-0.3% of mildew preventive and 10-20% of water;
the powder material comprises the following components in percentage by mass: 50-70% of ash cement with the strength of 42.5, 2-4% of sodium hydroxide powder, 10-20% of 325-mesh quartz powder, 1-3% of water reducing agent and 20-30% of fly ash.
Preferably, the VAE emulsion accounts for 83-87% by mass, the defoaming agent accounts for 1-2% by mass, the mildew preventive accounts for 0.1-0.2% by mass, and the water accounts for 11-15% by mass.
Preferably, the ash cement with the strength of 42.5 accounts for 55-65% by mass, the sodium hydroxide powder accounts for 2-3% by mass, the 325-mesh quartz powder accounts for 11-15% by mass, the water reducing agent accounts for 1-2% by mass, and the fly ash accounts for 21-25% by mass.
Preferably, the defoaming agent is at least one of an organic silicon defoaming agent, a polyether defoaming agent, a mineral oil defoaming agent and a vegetable oil defoaming agent.
Preferably, the water reducing agent is at least one of a polycarboxylic acid-based high-performance water reducing agent, a melamine-based water reducing agent and a naphthalene sulfonate water reducing agent.
In another aspect, an embodiment of the present invention provides a method for preparing a high-elongation sound-insulation two-component water-based waterproof coating, including the following steps:
preparing raw materials of a liquid material according to a formula, mixing and stirring VAE emulsion, a defoaming agent, a mildew preventive and water under a vacuum condition to obtain the liquid material;
preparing raw materials of powder according to a formula, mixing and pre-dispersing fly ash and sodium hydroxide to obtain a pretreated filler, adding white cement, 325-mesh quartz powder and a water reducing agent into the filler, and stirring and mixing to obtain the powder;
the use ratio of the liquid material to the powder material is 1: 1-1.2.
Preferably, the preparation process of the liquid material comprises the following specific steps: selecting a stirring container capable of being connected with a vacuum pump for vacuum pumping, sequentially adding VAE emulsion, a defoaming agent, a mildew preventive and water into the stirring container, closing a feeding port, starting the vacuum pump for vacuum pumping, then stirring, closing the stirring after the vacuum pumping is finished, and closing the vacuum pump to obtain a liquid material;
the preparation process of the powder material comprises the following specific steps: adding fly ash and sodium hydroxide into a filler pre-dispersion stirring device, starting stirring, closing the stirring device after the stirring is finished, and finishing pre-dispersion to obtain a pretreated filler;
and (3) sequentially adding white cement, 325-mesh quartz powder, a water reducing agent and the pretreated filler into a powder finished product stirring device, starting stirring, and stopping stirring after the stirring is finished to obtain the powder.
Preferably, the specific stirring process in the liquid material preparation process is as follows: the stirring speed is 350r/min, the stirring speed is reduced to 150r/min after the stirring is continued for 15 minutes, and the stirring is stopped after the stirring is continued for 10 minutes;
the concrete stirring process of the fly ash and the sodium hydroxide is as follows: stirring at the rotating speed of 1000r/min, pre-dispersing and stirring for 5 minutes and shutting down the stirring equipment;
the concrete stirring process of the white cement, the 325-mesh quartz powder, the water reducing agent and the pretreated filler comprises the following steps: stirring at the rotating speed of 1000r/min for 4 minutes, and stopping stirring to obtain powder.
Preferably, the use ratio of the liquid material to the powder material is 1: 1.1.
Preferably, the use ratio of the liquid material to the powder material is 1: 1.2.
The principle of the invention is that sodium hydroxide powder and fly ash are added into the powder of the waterproof coating, and the main oxide of the fly ash is SiO2With Al2O3When the sodium aluminate solution is used with liquid materials, NaOH is dissolved in water and reacts with alumina on the surface of the fly ash to generate tetrahydroxy sodium aluminate; the hydroxyl has an oleophobic effect, so that the fly ash modified by the alkali liquor has certain oleophobic property, the oil content absorbed by the fly ash is greatly reduced, and after the emulsion is fully coated, more emulsion can be filled in gaps between the fly ash and cement after hydration, so that the extending performance of a coating film is greatly improved; the porous coal ash is utilized to ensure that the waterproof coating can absorb and eliminate sound waves while achieving water resistance, thereby achieving better sound insulation effect.
Al2O3+2 NaOH+3 H2O＝2 Na[Al(OH)4]
Compared with the prior art, the invention has the beneficial effects that:
according to the high-elongation sound-insulation bi-component water-based waterproof coating, the modifier sodium hydroxide is added into the waterproof coating to perform surface modification treatment on the sound-insulation material fly ash particles, so that the oil absorption is reduced, the maximum filling effect is achieved, and the elongation at break of a coating film can be greatly improved while the good sound-insulation effect is ensured.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, technical solutions, features and effects according to the present invention will be given with preferred embodiments. The particular features, structures, or characteristics may be combined in any suitable manner in the embodiments or embodiments described below.
Example 1
Preparing the raw materials of the liquid material according to the formula: 900g of VAE emulsion, 15g of defoaming agent, 1g of mildew preventive and 100g of water; selecting a stirring container capable of being connected with a vacuum pump for vacuum pumping, sequentially adding the VAE emulsion, the defoaming agent, the mildew preventive and water into the container, closing a feeding port, starting the vacuum pump for vacuum pumping, controlling the stirring speed in the container to be 350r/min, continuously stirring for 15 minutes, reducing the stirring speed to 150r/min, continuously stirring for 10 minutes, closing the stirring, and closing the vacuum pump to obtain a liquid material;
preparing the raw materials of the powder according to the formula: 500g of cement ash, 30g of sodium hydroxide powder, 100g of 325-mesh quartz powder, 20g of water reducing agent and 200g of fly ash; adding fly ash and sodium hydroxide into a filler pre-dispersion stirring device, starting stirring at the rotating speed of 1000r/min, carrying out pre-dispersion stirring for 5 minutes, and stopping the stirring device to obtain a pretreated filler after the pre-dispersion is finished; sequentially adding white cement, 325-mesh quartz powder, a water reducing agent and the pretreated filler into a powder finished product stirring device, starting stirring at a rotating speed of 1000r/min, continuously stirring for 4 minutes, and then stopping stirring to obtain powder; the ratio of the liquid material to the powder material is 1: 1.2.
Example 2
Preparing the raw materials of the liquid material according to the formula: 900g of VAE emulsion, 20g of defoaming agent, 1g of mildew preventive and 100g of water; selecting a stirring container capable of being connected with a vacuum pump for vacuum pumping, sequentially adding the VAE emulsion, the defoaming agent, the mildew preventive and water into the container, closing a feeding port, starting the vacuum pump for vacuum pumping, controlling the stirring speed in the container to be 350r/min, continuously stirring for 15 minutes, reducing the stirring speed to 150r/min, continuously stirring for 10 minutes, closing the stirring, and closing the vacuum pump to obtain a liquid material;
preparing the raw materials of the powder according to the formula: 600g of cement ash, 20g of sodium hydroxide powder, 150g of 325-mesh quartz powder, 15g of water reducing agent and 300g of fly ash; adding fly ash and sodium hydroxide into a filler pre-dispersion stirring device, starting stirring at the rotating speed of 1000r/min, carrying out pre-dispersion stirring for 5 minutes, and stopping the stirring device to obtain a pretreated filler after the pre-dispersion is finished; sequentially adding white cement, 325-mesh quartz powder, a water reducing agent and the pretreated filler into a powder finished product stirring device, starting stirring at a rotating speed of 1000r/min, continuously stirring for 4 minutes, and then stopping stirring to obtain powder; the ratio of the liquid material to the powder material is 1: 1.2.
Example 3
Preparing the raw materials of the liquid material according to the formula: 900g of VAE emulsion, 20g of defoaming agent, 1g of mildew preventive and 100g of water; selecting a stirring container capable of being connected with a vacuum pump for vacuum pumping, sequentially adding the VAE emulsion, the defoaming agent, the mildew preventive and water into the container, closing a feeding port, starting the vacuum pump for vacuum pumping, controlling the stirring speed in the container to be 350r/min, continuously stirring for 15 minutes, reducing the stirring speed to 150r/min, continuously stirring for 10 minutes, closing the stirring, and closing the vacuum pump to obtain a liquid material;
preparing the raw materials of the powder according to the formula: 700g of cement ash, 20g of sodium hydroxide powder, 150g of 325-mesh quartz powder, 15g of water reducing agent and 200g of fly ash; adding fly ash and sodium hydroxide into a filler pre-dispersion stirring device, starting stirring at the rotating speed of 1000r/min, carrying out pre-dispersion stirring for 5 minutes, and stopping the stirring device to obtain a pretreated filler after the pre-dispersion is finished; sequentially adding white cement, 325-mesh quartz powder, a water reducing agent and the pretreated filler into a powder finished product stirring device, starting stirring at a rotating speed of 1000r/min, continuously stirring for 4 minutes, and then stopping stirring to obtain powder; the ratio of the liquid material to the powder material is 1: 1.2.
Comparative example 1
Preparing the raw materials of the liquid material according to the formula: 900g of VAE emulsion, 20g of defoaming agent, 1g of mildew preventive and 100g of water; selecting a stirring container capable of being connected with a vacuum pump for vacuum pumping, sequentially adding the VAE emulsion, the defoaming agent, the mildew preventive and water into the container, closing a feeding port, starting the vacuum pump for vacuum pumping, controlling the stirring speed in the container to be 350r/min, continuously stirring for 15 minutes, reducing the stirring speed to 150r/min, continuously stirring for 10 minutes, closing the stirring, and closing the vacuum pump to obtain a liquid material;
preparing the raw materials of the powder according to the formula: 700g of cement ash, 150g of 325-mesh quartz powder, 15g of water reducing agent and 200g of fly ash; sequentially adding white cement, 325-mesh quartz powder, a water reducing agent and fly ash into a powder finished product stirring device, starting stirring at a rotating speed of 1000r/min, continuously stirring for 4 minutes, and then stopping stirring to obtain powder; the ratio of the liquid material to the powder material is 1: 1.2.
The performance of the two-component water-based waterproof coating materials prepared in the above examples 1, 2, 3 and 1 was measured, and the measurement results are shown in table 1.
TABLE 1 test results of the properties of the waterproof coatings prepared in examples 1 to 3 and comparative example 1
According to the detection results, the performances of the two-component water-based waterproof coating prepared in the examples 1-3 of the invention all reach the II-type requirement standard in GB/T23445-2009, and the two-component water-based waterproof coating has high extensibility and sound insulation effect; the comparative document 1 adopts the same preparation conditions as those in the above example 3, except that sodium hydroxide is not added to the powder of the comparative example 1, that is, the fly ash in the powder is ordinary fly ash, and no treatment is performed, and the elongation characteristics of the sound-insulating waterproof coating prepared in the comparative example 1 are detected to be inferior to those of any waterproof coatings of the examples 1 to 3, and the elongation characteristics of the sound-insulating waterproof coating cannot meet the type II standard requirements in GB/T23445-2009.
TABLE 2 test results of sound absorption properties of the waterproof coatings prepared in examples 1 to 3 and comparative example 1
As can be seen from Table 2, examples 1 to 3 of the present invention absorbed at least 38% of the noise by the coating obtained from the coating of the present invention, and were able to significantly reduce the noise pollution, and had better sound absorption coefficient than the comparative example.
Most of the conventional waterproof coatings can play a role in sound insulation and water prevention by adding a sound insulation material (fly ash), but the traditional sound insulation material has poor containment in the coatings and large oil absorption, so that the elongation performance of the coatings is damaged, for example, the sound insulation and water prevention coating of comparative example 1.
The invention utilizes the porosity of the fly ash to ensure that the waterproof coating can absorb and eliminate sound waves while achieving water resistance, thereby achieving better sound insulation effect, and simultaneously, in order to overcome the defect that the extension performance of the coating is damaged in order to obtain the sound insulation effect in the traditional technology, the invention researches by adding the fly ash modified by sodium hydroxide into the powder of the waterproof coating, wherein the fly ash belongs to building materials, can be better fused with polymer emulsion and cement, and the main oxide of the fly ash is SiO2With Al2O3When the sodium aluminate solution is used with liquid materials, NaOH is dissolved in water and reacts with alumina on the surface of the fly ash to generate tetrahydroxy sodium aluminate; as hydroxyl has an oleophobic function, the fly ash modified by alkali liquor has certain oleophobic property, the oil content absorbed by the fly ash is greatly reduced, and after the fly ash is fully coated by emulsion, more emulsion can be filled in gaps between the fly ash and cement after hydration, so that the extensibility of a coating film is greatly improved.
The embodiments of the present invention are not exhaustive, and those skilled in the art can select them from the prior art.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and shall be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the above claims.
Claims (10)
1. The high-elongation sound-insulation double-component water-based waterproof coating is characterized by comprising a liquid material and a powder material;
the liquid material comprises the following components in percentage by mass: 80-90% of VAE emulsion, 1-3% of defoaming agent, 0.1-0.3% of mildew preventive and 10-20% of water;
the powder material comprises the following components in percentage by mass: 50-70% of ash cement with the strength of 42.5, 2-4% of sodium hydroxide powder, 10-20% of 325-mesh quartz powder, 1-3% of water reducing agent and 20-30% of fly ash; the preparation process of the powder material comprises the following specific steps: adding fly ash and sodium hydroxide into a filler pre-dispersion stirring device, starting stirring, closing the stirring device after the stirring is finished, and finishing pre-dispersion to obtain a pretreated filler; and (3) sequentially adding white cement, 325-mesh quartz powder, a water reducing agent and the pretreated filler into a powder finished product stirring device, starting stirring, and stopping stirring after the stirring is finished to obtain the powder.
2. The high-elongation sound-insulation two-component water-based waterproof coating as claimed in claim 1, wherein the VAE emulsion is 83-87% by mass, the defoamer is 1-2% by mass, the mildewproof agent is 0.1-0.2% by mass, and the water is 11-15% by mass.
3. The high-elongation sound-insulation two-component water-based waterproof coating as claimed in claim 1, wherein the cement with the strength of 42.5 accounts for 55-65% by mass, the sodium hydroxide powder accounts for 2-3% by mass, the 325-mesh quartz powder accounts for 11-15% by mass, the water reducing agent accounts for 1-2% by mass, and the fly ash accounts for 21-25% by mass.
4. The high-elongation sound-insulation two-component water-based waterproof coating material as claimed in claim 1, wherein the defoaming agent is at least one of a silicone defoaming agent, a polyether defoaming agent, a mineral oil defoaming agent and a vegetable oil defoaming agent.
5. The high-elongation sound-insulation two-component water-based waterproof coating material of claim 1, wherein the water reducing agent is at least one of a polycarboxylic acid-based high-performance water reducing agent, a melamine-based water reducing agent and a naphthalene sulfonate water reducing agent.
6. The method for preparing the high-elongation soundproof two-component water-based waterproof coating material according to claim 1, wherein the method comprises the steps of:
preparing raw materials of a liquid material according to a formula, mixing and stirring VAE emulsion, a defoaming agent, a mildew preventive and water under a vacuum condition to obtain the liquid material;
preparing raw materials of powder according to a formula, mixing and pre-dispersing fly ash and sodium hydroxide to obtain a pretreated filler, adding white cement, 325-mesh quartz powder and a water reducing agent into the filler, and stirring and mixing to obtain the powder;
the use ratio of the liquid material to the powder material is 1: 1-1.2.
7. The method for preparing the high-elongation sound-insulation two-component water-based waterproof coating material according to claim 6,
the preparation process of the liquid material comprises the following specific steps: selecting a stirring container capable of being connected with a vacuum pump for vacuum pumping, sequentially adding VAE emulsion, a defoaming agent, a mildew preventive and water into the stirring container, closing a feeding port, starting the vacuum pump for vacuum pumping, then stirring, closing the stirring after the vacuum pumping is finished, and closing the vacuum pump to obtain a liquid material;
the preparation process of the powder material comprises the following specific steps: adding fly ash and sodium hydroxide into a filler pre-dispersion stirring device, starting stirring, closing the stirring device after the stirring is finished, and finishing pre-dispersion to obtain a pretreated filler;
and (3) sequentially adding white cement, 325-mesh quartz powder, a water reducing agent and the pretreated filler into a powder finished product stirring device, starting stirring, and stopping stirring after the stirring is finished to obtain the powder.
8. The preparation method of the high-elongation sound-insulation two-component water-based waterproof coating material according to claim 7, wherein the specific stirring process in the liquid material preparation process is as follows: the stirring speed is 350r/min, the stirring speed is reduced to 150r/min after the stirring is continued for 15 minutes, and the stirring is stopped after the stirring is continued for 10 minutes;
the concrete stirring process of the fly ash and the sodium hydroxide is as follows: stirring at the rotating speed of 1000r/min, pre-dispersing and stirring for 5 minutes and shutting down the stirring equipment;
the concrete stirring process of the white cement, the 325-mesh quartz powder, the water reducing agent and the pretreated filler comprises the following steps: stirring at the rotating speed of 1000r/min for 4 minutes, and stopping stirring to obtain powder.
9. The preparation method of the high-elongation sound-insulation two-component water-based waterproof coating as claimed in claim 6, wherein the use ratio of the liquid material to the powder material is 1: 1.1.
10. The preparation method of the high-elongation sound-insulation two-component water-based waterproof coating as claimed in claim 6, wherein the use ratio of the liquid material to the powder material is 1: 1.2.
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| CN108753063A (en) * | 2018-06-13 | 2018-11-06 | 潍坊市正泰防水材料有限公司 | A kind of polymer cement waterproof paint and preparation method thereof |
| CN112322082A (en) * | 2020-10-30 | 2021-02-05 | 惠州市金卓越实业有限公司 | Novel damping sound-insulation coating and preparation method thereof |
| CN118064011A (en) * | 2024-03-14 | 2024-05-24 | 湖南国彩新材料有限公司 | Sound-absorbing fireproof heat-insulating paint for gypsum board and preparation method thereof |
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| CN101899243A (en) * | 2010-03-22 | 2010-12-01 | 苏州市姑苏新型建材有限公司 | Self-closing polymer cement waterproof paint and method for preparing same |
| CN103740188A (en) * | 2014-01-17 | 2014-04-23 | 山西大学 | Heat insulating and preserving coating for exterior wall of building |
| CN105198323A (en) * | 2015-10-27 | 2015-12-30 | 北京东方雨虹防水技术股份有限公司 | Polymer-cement waterproof coating with high elongation and high strength |
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| CN101899243A (en) * | 2010-03-22 | 2010-12-01 | 苏州市姑苏新型建材有限公司 | Self-closing polymer cement waterproof paint and method for preparing same |
| CN103740188A (en) * | 2014-01-17 | 2014-04-23 | 山西大学 | Heat insulating and preserving coating for exterior wall of building |
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