CN112341077A - Expansion type waterproof polymer and preparation method thereof - Google Patents
Expansion type waterproof polymer and preparation method thereof Download PDFInfo
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- CN112341077A CN112341077A CN202011151061.XA CN202011151061A CN112341077A CN 112341077 A CN112341077 A CN 112341077A CN 202011151061 A CN202011151061 A CN 202011151061A CN 112341077 A CN112341077 A CN 112341077A
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- parts
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- microcapsule
- water
- intumescent
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/304—Magnesia
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1033—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2092—Resistance against biological degradation
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Abstract
The invention discloses an intumescent waterproof polymer which comprises the following raw materials in parts by weight: 45-60 parts of polyacrylate emulsion, 15-25 parts of silicate cement, 3-5 parts of microcapsule expanding agent, 5-8 parts of modified nano magnesium oxide, 0.3-0.5 part of defoaming agent, 1-3 parts of water reducing agent and 8-15 parts of water. Through the synergistic effect of the components, the formed coating has the characteristics of strong binding power, excellent tensile strength, good waterproof performance and the like.
Description
Technical Field
The invention relates to a waterproof material, in particular to an expansion type waterproof polymer and a preparation method thereof.
Background
At present, part of high polymer materials in the waterproof material can generate more or less volume shrinkage in the polymerization process, so that the use value of the waterproof material is influenced, and the application of the waterproof material is limited. For example, the volume of the resin is shrunk when part of the resin is cured to generate internal stress, so that voids and cracks appear in the material, and the waterproof effect of the material is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an intumescent waterproof polymer with reasonable formula design and good use effect and a preparation method thereof.
In order to achieve the purpose, one of the technical schemes adopted by the invention is as follows: an intumescent waterproof polymer comprises the following raw materials in parts by weight: 45-60 parts of polyacrylate emulsion, 15-25 parts of silicate cement, 3-5 parts of microcapsule expanding agent, 5-8 parts of modified nano magnesium oxide, 0.3-0.5 part of defoaming agent, 1-3 parts of water reducing agent and 8-15 parts of water.
Furthermore, the microcapsule swelling agent is coated by a microcapsule technology, wherein the swelling agent is modified bentonite, the microcapsule wall is made of a water-insoluble film-forming material, such as polyacrylate, and the modified bentonite is coated by a spray drying method after the polyacrylate is dissolved in ethanol.
Further, the modified nano-magnesium oxide is stearic acid modified nano-magnesium oxide.
Further, the specific surface area of the silicate cement is 4800 +/-200 cm/g.
The preparation method of the expansion type waterproof polymer comprises the following steps:
(1) according to the formula requirement, uniformly stirring water, polyacrylate emulsion and a defoaming agent at the rotating speed of 400-;
(2) according to the formula requirement, uniformly stirring the portland cement, the microcapsule expanding agent, the modified nano-magnesium oxide and the water reducing agent at the rotating speed of 500-600r/min to obtain mixed powder;
(3) and during construction, the mixed slurry and the mixed powder are stirred uniformly on site to obtain the composite material.
The principle is as follows: the polymer formed by compounding the polyacrylate emulsion and cement slurry has excellent bonding, crack resistance, frost resistance, impermeability and other performances, and has certain self-expansibility and dispersibility when meeting water due to the addition of the microcapsule expanding agent and the modified nano magnesium oxide.
Compared with the prior art, the invention has the beneficial effects that:
(1) through the synergistic effect of the components, the formed coating has the characteristics of strong binding power, excellent tensile strength, good waterproof performance and the like;
(2) according to the invention, the silicate cement is combined with the matching of the microcapsule expanding agent and the modified nano magnesium oxide, so that the waterproof layer uniformly generates swelling micro deformation, the self-repairing of cracks can be realized, and the cracks about 0.45mm can be blocked;
(3) according to the invention, the polymer has a certain antibacterial effect by adding the modified nano magnesium oxide;
(4) the swelling agent is wrapped by adopting a microcapsule technology, so that the swelling agent is slowly released to play a role in compensating swelling force.
Detailed Description
The invention will now be further elucidated with reference to specific embodiments. The following are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent or similar substitutes should fall within the scope of protection of the invention without departing from the inventive concept. The following portions, which are not described in detail, are all referred to as conventional techniques in the art.
Example one
The intumescent waterproof polymer is prepared from the following raw materials in parts by weight: 45 parts of polyacrylate emulsion, 15 parts of silicate cement, 5 parts of microcapsule expanding agent, 5 parts of stearic acid modified nano magnesium oxide, 0.5 part of defoaming agent, 1 part of water reducing agent and 8 parts of water.
The microcapsule expanding agent is coated by a microcapsule technology, wherein the expanding agent adopts bentonite, the microcapsule wall adopts a water-insoluble film-forming material, such as low-molecular-weight epoxy resin (molecular weight is 200-400), and the weight ratio of the epoxy resin to the water-insoluble film-forming material is as follows: 5, coating the expanding agent by a spray drying method in the ratio of 3 to 5;
the specific surface area of the silicate cement is 4800 +/-200 cm/g. The cement has micro-expansion performance when meeting water.
The preparation method of the expansion type waterproof polymer comprises the following steps:
(1) according to the formula requirement, uniformly stirring water, polyacrylate emulsion and a defoaming agent at the rotating speed of 400-;
(2) according to the formula requirement, uniformly stirring the portland cement, the microcapsule expanding agent, the modified nano-magnesium oxide and the water reducing agent at the rotating speed of 500-600r/min to obtain mixed powder;
(3) and during construction, the mixed slurry and the mixed powder are stirred uniformly on site to obtain the composite material.
Example two
The intumescent waterproof polymer comprises the following raw materials in parts by weight: 60 parts of polyacrylate emulsion, 25 parts of silicate cement, 5 parts of microcapsule expanding agent, 8 parts of stearic acid modified nano magnesium oxide, 0.5 part of defoaming agent, 3 parts of water reducing agent and 8 parts of water.
The microcapsule expanding agent is coated by a microcapsule technology, wherein the expanding agent adopts bentonite, the microcapsule wall adopts a water-insoluble film-forming material, such as low-molecular-weight epoxy resin (molecular weight is 200-400), and the weight ratio of the epoxy resin to the water-insoluble film-forming material is as follows: and 4, coating the expanding agent by a spray drying method according to the ratio of 4: 3.
The specific surface area of the silicate cement is 4800 +/-200 cm/g.
The preparation method of the expansion type waterproof polymer comprises the following steps:
(1) according to the formula requirement, uniformly stirring water, polyacrylate emulsion and a defoaming agent at the rotating speed of 400-;
(2) according to the formula requirement, uniformly stirring the portland cement, the microcapsule expanding agent, the modified nano-magnesium oxide and the water reducing agent at the rotating speed of 500-600r/min to obtain mixed powder;
(3) and during construction, the mixed slurry and the mixed powder are stirred uniformly on site to obtain the composite material.
Claims (5)
1. The intumescent waterproof polymer is characterized by comprising the following raw materials in parts by weight: 45-60 parts of polyacrylate emulsion, 15-25 parts of silicate cement, 3-5 parts of microcapsule expanding agent, 5-8 parts of modified nano magnesium oxide, 0.3-0.5 part of defoaming agent, 1-3 parts of water reducing agent and 8-15 parts of water.
2. The intumescent waterproof polymer of claim 1, wherein said microcapsule swelling agent is coated with a microcapsule technology, wherein the swelling agent is modified bentonite, and the microcapsule wall is made of a water-insoluble film-forming material.
3. The intumescent waterproofing polymer according to claim 1 wherein the modified nano magnesium oxide is stearic acid modified nano magnesium oxide.
4. The intumescent waterproof polymer of claim 1, characterized in that the specific surface area of said silicate cement is 4800 ± 200 cm/g.
5. Process for the preparation of the intumescent waterproofing polymer according to claim 1 or 2 or 3 or 4 characterized in that it comprises the following steps:
(1) according to the formula requirement, uniformly stirring water, polyacrylate emulsion and a defoaming agent at the rotating speed of 400-;
(2) according to the formula requirement, uniformly stirring the portland cement, the microcapsule expanding agent, the modified nano-magnesium oxide and the water reducing agent at the rotating speed of 500-600r/min to obtain mixed powder;
(3) and during construction, the mixed slurry and the mixed powder are stirred uniformly on site to obtain the composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151061.XA CN112341077A (en) | 2020-10-24 | 2020-10-24 | Expansion type waterproof polymer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151061.XA CN112341077A (en) | 2020-10-24 | 2020-10-24 | Expansion type waterproof polymer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112341077A true CN112341077A (en) | 2021-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011151061.XA Pending CN112341077A (en) | 2020-10-24 | 2020-10-24 | Expansion type waterproof polymer and preparation method thereof |
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| Country | Link |
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| CN (1) | CN112341077A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496338A (en) * | 2012-11-30 | 2015-04-08 | 张庆彬 | Polymer-cement-based waterproof paint |
| CN104629547A (en) * | 2015-01-19 | 2015-05-20 | 安徽嘉年华漆业有限公司 | Special high-performance paint for building internal walls and preparation method thereof |
| CN107651905A (en) * | 2017-09-07 | 2018-02-02 | 安徽理工大学 | A kind of morning expands by force delaying type sealing material |
| CN108178573A (en) * | 2017-12-19 | 2018-06-19 | 常州思宇环保材料科技有限公司 | A kind of post-tensioned prestressing pipeline Special grouting material |
-
2020
- 2020-10-24 CN CN202011151061.XA patent/CN112341077A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496338A (en) * | 2012-11-30 | 2015-04-08 | 张庆彬 | Polymer-cement-based waterproof paint |
| CN104629547A (en) * | 2015-01-19 | 2015-05-20 | 安徽嘉年华漆业有限公司 | Special high-performance paint for building internal walls and preparation method thereof |
| CN107651905A (en) * | 2017-09-07 | 2018-02-02 | 安徽理工大学 | A kind of morning expands by force delaying type sealing material |
| CN108178573A (en) * | 2017-12-19 | 2018-06-19 | 常州思宇环保材料科技有限公司 | A kind of post-tensioned prestressing pipeline Special grouting material |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210209 |
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| RJ01 | Rejection of invention patent application after publication |