CN109762467A - Modified viscoelastic marine glue of graphene and preparation method thereof - Google Patents
Modified viscoelastic marine glue of graphene and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of modified viscoelastic marine glues of graphene, it is made of the raw material of following weight percent: water 6-30%, dispersing agent 0.05-0.2%, filler 10-35%, liquid high polymer 10-20%, graphene slurry 3-6%, emulsified asphalt 40-60%, defoaming agent 0.05-0.1%, preservative 0.05-0.1%, thickener 0.2-0.7%.The product in viscoelastic waterproof gasket cement by adding suitable graphene, utilize the physical property that graphene is excellent, it is whole to promote viscoelastic marine glue performance, it is obviously improved the low-temperature cracking-resistance of material, high-temperature stability, ageing-resistant performance, water resistance, the anti-channeling water of resistance to compression etc., the application range of viscoelastic marine glue is expanded, and Product environment is friendly, meets the development trend of modern environment-friendly waterproof paint.Accordingly, inventor has also set up corresponding preparation method.
Description
Technical Field
The invention belongs to the technical field of building waterproof materials, and particularly relates to graphene modified viscoelastic waterproof glue and a preparation method thereof.
Background
Asphalt is a traditional waterproof material, has good cohesiveness, hydrophobicity and the like, and is widely used in building waterproof projects. However, asphalt also has the disadvantages of low temperature embrittlement, high temperature sagging, poor elasticity and poor aging resistance. The modified asphalt waterproof material in China is mainly a waterproof roll material generally, but the material has two problems: firstly, water channeling and leaking are easy to occur, and the construction difficulty is higher for the base surface of a complex structure, particularly for small-area parts; and secondly, along with the higher and higher requirements of people on environmental protection, the water-based waterproof material is gradually popular in the market. The viscoelastic waterproof glue is a single-component water-emulsion asphalt waterproof coating, the current main modifiers comprise styrene-butadiene latex, chloroprene latex, acrylic emulsion and the like, and the modifiers have the defects of unsatisfactory mechanical properties, poor deformation resistance, poor durability and poor low-temperature resistance and are difficult to satisfy customers. Therefore, it is highly desirable to introduce other types of modifiers to improve the mechanical properties of the coating film.
The durability is improved, and the method is an effective way for solving the problems of the water-emulsion asphalt waterproof coating. Graphene is a novel two-dimensional atomic crystal formed by tightly stacking carbon atoms, and is prepared by reducing graphene oxide through a series of chemical methods, and the purpose is to thoroughly remove oxide groups attached to the graphene oxide, so that the structure of the graphene oxide is stable, and the prepared product is ensured not to be deteriorated due to chemical reaction caused by excessive activity. The material made by the method has strong and tough physical characteristics, and the breaking strength is 200 times higher than that of the best steel. Meanwhile, the elastic fabric has good elasticity, and the stretching amplitude can reach 20% of the size of the elastic fabric.
Chinese patent document CN 108384332 a discloses a graphene chloroprene rubber modified asphalt waterproof coating, which aims to improve the performance of the chloroprene rubber modified asphalt waterproof coating by using graphene oxide, but the graphene oxide adopted by the invention has an unstable molecular structure, contains a large amount of hydroxyl and carboxyl, has high water absorption, and is not beneficial to water resistance.
Disclosure of Invention
The invention aims to provide the graphene modified viscoelastic waterproof adhesive which is good in physical property, good in impermeability, high in durability, good in waterproof effect and environment-friendly and the preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the graphene modified viscoelastic waterproof adhesive is prepared from the following raw materials in percentage by weight: 6-30% of water, 0.05-0.2% of dispersing agent, 10-35% of filler, 10-20% of liquid polymer, 3-6% of graphene slurry, 40-60% of emulsified asphalt, 0.05-0.1% of defoaming agent, 0.05-0.1% of preservative and 0.2-0.7% of thickening agent.
The graphene slurry is prepared by the following operations: 965 parts of water, 5 parts of surfactant and 30 parts of graphene are mixed in a grinding tank according to parts by weight, then ground in a grinder for 30 minutes, and filtered by a 40-mesh filter screen to obtain graphene slurry (solid content is 3%).
The emulsified asphalt is prepared by the following operations: adding 5 parts by weight of asphalt emulsifier, 0.25 part by weight of pH value regulator and 0.25 part by weight of stabilizer into 95 parts by weight of water, stirring and dispersing uniformly, raising the temperature to 55 ℃, and keeping the temperature constant to obtain a soap solution; heating the asphalt to 140 ℃, keeping the temperature constant, setting the solid content, starting an asphalt emulsifier, opening an asphalt valve after the flow of the soap solution is stable, and sampling after the flow of the asphalt and the flow of the soap solution are stable to obtain the emulsified asphalt.
The water is treated soft water, the dispersant is polycarboxylate dispersant, the filler is one or more of quartz stone, calcite powder, talcum powder and titanium dioxide, the liquid polymer is one or more of neoprene latex, styrene-butadiene latex and styrene-acrylic emulsion, the defoaming agent is organic silicon or amino silicon oil defoaming agent, the preservative is Kathon preservative, and the thickening agent is one or more of cellulose ether, acrylate and polyurethane.
The graphene is nano graphene, the surfactant is a polycarboxylate surfactant, the asphalt is No. 90 or No. 70 petroleum asphalt, the asphalt emulsifier is an anionic asphalt emulsifier, the pH value regulator is an alkali, and the stabilizer is a soluble thickening thixotropic agent.
The preparation method of the graphene modified viscoelastic waterproof adhesive comprises the steps of adding a dispersing agent and a filler into water, stirring and pulping for 10 minutes, then adding emulsified asphalt, a liquid high polymer, graphene slurry, a defoaming agent and a preservative, stirring and dispersing for 10 minutes by using a dispersing machine, finally adding a thickening agent, stirring and vacuumizing for 10 minutes to obtain the graphene modified viscoelastic waterproof adhesive.
Aiming at the problems of the existing viscoelastic waterproof glue, the inventor develops a graphene modified viscoelastic waterproof glue which is prepared from the following raw materials in percentage by weight: 6-30% of water, 0.05-0.2% of dispersing agent, 10-35% of filler, 10-20% of liquid polymer, 3-6% of graphene slurry, 40-60% of emulsified asphalt, 0.05-0.1% of defoaming agent, 0.05-0.1% of preservative and 0.2-0.7% of thickening agent. According to the viscoelastic waterproof sealant, a proper amount of graphene is added into the viscoelastic waterproof sealant, the excellent physical properties of the graphene are utilized, the performance of the viscoelastic waterproof sealant is integrally improved, the low-temperature crack resistance, the high-temperature stability, the aging resistance, the water resistance, the compression resistance, the water channeling resistance and the like of the material are obviously improved, the application range of the viscoelastic waterproof sealant is expanded, the product is environment-friendly, and the development trend of modern environment-friendly waterproof coatings is met. Accordingly, the inventors have also established a corresponding preparation method.
Detailed Description
Example graphene modified viscoelastic waterproof adhesive and preparation thereof
Basic formula (weight percentage): 6-30% of water, 0.05-0.2% of dispersing agent, 10-35% of filler, 10-20% of liquid polymer, 3-6% of graphene slurry, 40-60% of emulsified asphalt, 0.05-0.1% of defoaming agent, 0.05-0.1% of preservative and 0.2-0.7% of thickening agent.
The specific formulations of each example and control are shown in Table 1.
TABLE 1 formulation composition (parts by weight) of examples and control groups
In Table 1, water was treated soft water, the dispersant was a polycarboxylate-type dispersant (SN-5040-type dispersant), the antifoaming agent was an organosilicon-based or amino silicone-based antifoaming agent (825-type antifoaming agent), the preservative was a Kathon-based preservative (LXZ-type preservative), and the thickener was a cellulose ether-based (hydroxyethyl cellulose).
The preparation method comprises the following steps: adding a dispersing agent and a filler into water, stirring and pulping for 10 minutes, then adding emulsified asphalt, a liquid high polymer, graphene slurry, a defoaming agent and a preservative, stirring and dispersing for 10 minutes by using a dispersing machine, finally adding a thickening agent, stirring and vacuumizing for 10 minutes, discharging and packaging to obtain the graphene modified viscoelastic waterproof adhesive. Wherein,
the emulsified asphalt is prepared by the following operations: adding 5 parts by weight of asphalt emulsifier, 0.25 part by weight of pH value regulator and 0.25 part by weight of stabilizer into 95 parts by weight of water, stirring and dispersing uniformly, raising the temperature to 55 ℃, and keeping the temperature constant to obtain a soap solution; heating the asphalt to 140 ℃, keeping the temperature constant, setting the solid content to be 60%, starting an asphalt emulsifier, opening an asphalt valve after the flow of the soap solution is stable, and sampling after the flow of the asphalt and the flow of the soap solution are stable to obtain the emulsified asphalt. Wherein the asphalt is No. 90 or No. 70 petroleum asphalt, the asphalt emulsifier is anionic asphalt emulsifier (tall oil type, sodium abietate type, alpha-olefin sulfonate type asphalt emulsifier), the pH value regulator is sodium hydroxide or potassium hydroxide, and the stabilizer is soluble thickening thixotropic agent (JY-WD2 type thickening thixotropic agent).
The graphene slurry is prepared by the following operations: 965 parts of water, 5 parts of surfactant and 30 parts of graphene are mixed in a grinding tank according to parts by weight, then ground in a grinder for 30 minutes, and filtered by a 40-mesh filter screen to obtain graphene slurry (solid content is 3%). Wherein, the graphene is nano graphene, and the surfactant is a polycarboxylate surfactant (SN-5040 type surfactant).
The waterproof adhesive prepared in the table 1 is adopted to prepare a coating film according to the requirements in JC/T408-2005 water-emulsified asphalt waterproof coating and perform a physical and mechanical property test. In order to ensure the accuracy of the test result, the same amount of water as the graphene slurry is adopted in the comparison to ensure the overall consistency. In table 1, the formulations of the examples and the control were selected for comparison. The results of the performance tests are shown in Table 2.
Table 2 performance test results of graphene modified waterproofing adhesive and comparative samples
As can be seen from Table 2, the criteria implemented in examples 1, 2, and 3 are JC/T408-. Compared with a control group, the graphene modified viscoelastic waterproof adhesive disclosed by the invention has the advantages that the bonding strength is obviously improved except for the qualification of conventional detection, and the graphene is proved to have improved mechanical properties and better high-temperature resistance. In addition, after ultraviolet treatment, the low-temperature flexibility is reduced to a small extent, which shows that the graphene has great help to the weather resistance and durability of the waterproof coating film.
Claims (6)
1. The graphene modified viscoelastic waterproof adhesive is characterized by being prepared from the following raw materials in percentage by weight: 6-30% of water, 0.05-0.2% of dispersing agent, 10-35% of filler, 10-20% of liquid polymer, 3-6% of graphene slurry, 40-60% of emulsified asphalt, 0.05-0.1% of defoaming agent, 0.05-0.1% of preservative and 0.2-0.7% of thickening agent.
2. The graphene-modified viscoelastic waterproof adhesive according to claim 1, characterized in that the graphene slurry is prepared by the following operations: 965 parts of water, 5 parts of surfactant and 30 parts of graphene are mixed in a grinding tank according to parts by weight, then ground in a grinder for 30 minutes, and filtered by a 40-mesh filter screen to obtain the graphene slurry.
3. The graphene-modified viscoelastic waterproof adhesive according to claim 1, characterized in that the emulsified asphalt is prepared by the following operations: adding 5 parts by weight of asphalt emulsifier, 0.25 part by weight of pH value regulator and 0.25 part by weight of stabilizer into 95 parts by weight of water, stirring and dispersing uniformly, raising the temperature to 55 ℃, and keeping the temperature constant to obtain a soap solution; heating the asphalt to 140 ℃, keeping the temperature constant, starting an asphalt emulsifier, opening an asphalt valve after the flow of the soap solution is stable, and sampling after the flow of the asphalt and the flow of the soap solution are stable to obtain the emulsified asphalt.
4. The graphene-modified viscoelastic waterproof adhesive according to claim 1, characterized in that: the water is (treated) soft water, the dispersing agent is polycarboxylate dispersing agent, the filler is one or more of quartz stone, calcite powder, talcum powder and titanium dioxide, the liquid polymer is one or more of neoprene latex, styrene-butadiene latex and styrene-acrylic emulsion, the defoaming agent is organic silicon or amino-silicone oil defoaming agent, the preservative is Kathon preservative, and the thickening agent is one or more of cellulose ether, acrylate and polyurethane.
5. The graphene-modified viscoelastic waterproof adhesive according to claim 2 or 3, characterized in that: the graphene is nano graphene, the surfactant is a polycarboxylate surfactant, the asphalt is No. 90 or No. 70 petroleum asphalt, the asphalt emulsifier is an anionic asphalt emulsifier, the pH value regulator is an alkali, and the stabilizer is a soluble thickening thixotropic agent.
6. The preparation method of the graphene modified viscoelastic waterproof adhesive as claimed in claim 5, is characterized in that: adding a dispersing agent and a filler into water, stirring and pulping for 10 minutes, then adding emulsified asphalt, a liquid high polymer, graphene slurry, a defoaming agent and a preservative, stirring and dispersing for 10 minutes by using a dispersing machine, finally adding a thickening agent, stirring and vacuumizing for 10 minutes to obtain the graphene modified viscoelastic waterproof adhesive.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110157333A (en) * | 2019-06-12 | 2019-08-23 | 湖南辰砾新材料有限公司 | A kind of water-based anticorrosive paint and preparation method thereof |
| CN111876076A (en) * | 2020-07-31 | 2020-11-03 | 江苏华夏制漆科技有限公司 | Temporary protection water-based paint for sucker rod of oil pumping well and preparation method thereof |
| CN112592660A (en) * | 2020-05-12 | 2021-04-02 | 成都虹润制漆有限公司 | Temporary protective water-based paint applied to sucker rod of drilling machine and preparation method thereof |
| CN113652183A (en) * | 2021-09-16 | 2021-11-16 | 凯诺建设有限公司 | Asphalt-based interfacial agent and preparation method thereof |
| CN114891481A (en) * | 2022-06-08 | 2022-08-12 | 河北豫源防水材料有限公司 | Graphene modified asphalt layer material, preparation method thereof and waterproof roll |
| WO2023045553A1 (en) * | 2021-09-26 | 2023-03-30 | 江苏凯伦建材股份有限公司 | Highly water-resistant environmentally-friendly waterproof sealant, preparation method therefor and application thereof |
| CN116554785A (en) * | 2023-05-16 | 2023-08-08 | 姚玉明 | Graphene self-healing waterproof coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110157333A (en) * | 2019-06-12 | 2019-08-23 | 湖南辰砾新材料有限公司 | A kind of water-based anticorrosive paint and preparation method thereof |
| CN112592660A (en) * | 2020-05-12 | 2021-04-02 | 成都虹润制漆有限公司 | Temporary protective water-based paint applied to sucker rod of drilling machine and preparation method thereof |
| CN111876076A (en) * | 2020-07-31 | 2020-11-03 | 江苏华夏制漆科技有限公司 | Temporary protection water-based paint for sucker rod of oil pumping well and preparation method thereof |
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| WO2023045553A1 (en) * | 2021-09-26 | 2023-03-30 | 江苏凯伦建材股份有限公司 | Highly water-resistant environmentally-friendly waterproof sealant, preparation method therefor and application thereof |
| CN114891481A (en) * | 2022-06-08 | 2022-08-12 | 河北豫源防水材料有限公司 | Graphene modified asphalt layer material, preparation method thereof and waterproof roll |
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| CN116554785A (en) * | 2023-05-16 | 2023-08-08 | 姚玉明 | Graphene self-healing waterproof coating |
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