CN108101417A - A kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick and preparation method thereof - Google Patents
A kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick and preparation method thereof Download PDFInfo
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- CN108101417A CN108101417A CN201711362183.1A CN201711362183A CN108101417A CN 108101417 A CN108101417 A CN 108101417A CN 201711362183 A CN201711362183 A CN 201711362183A CN 108101417 A CN108101417 A CN 108101417A
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- Prior art keywords
- permeable brick
- water
- automatically cleaning
- resin base
- cleaning water
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
-
- 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
- C04B2111/00008—Obtaining or using nanotechnology related materials
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
-
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable bricks and preparation method thereof, the surface that water-permeable brick surface and hole inner wall are reduced using nano modification fluorinated acrylic ester can, so that water droplet has higher contact angle and relatively low roll angle on water-permeable brick surface and hole inner wall, so that water-permeable brick has good hydrophobic effect, so as to preferable self-cleaning performance.Fluorinated acrylic ester is obtained with continuous free radical solution polymerization legal system, and uses Nano-meter SiO_22It is modified, modified fluorinated acrylate is made;Quartz sand, epoxy resin, curing agent, silica flour, modified fluorinated crylic acid ester mixture are stirred evenly;Efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick is made by way of uniform distribution, compression moulding.The present invention solves water-permeable brick, and the pollutants such as flue gas are easily attached in the water-permeable brick surface and then block pores the problems such as in use, have many advantages, such as that preparation process is simple, automatically cleaning effect is good, durability is good, effectively improve the self-cleaning performance and water permeability of water-permeable brick.
Description
Technical field
It is permeable more particularly to a kind of efficiently durable super-hydrophobic resin base automatically cleaning the present invention relates to urban construction field
Brick and preparation method thereof.
Background technology
The problems such as traditional cities construction mode can not avoid urban waterlogging, water environment pollution etc. great, sponge urban construction
Allow city back to nature, rainwater controlled from source, by structure " ooze, it is stagnant, store, net, use, row " engineering system, reduce earth's surface
Runoff avoids damage to original natural hydrology environmental characteristic, and city is built up to " the sponge of nature accumulation, naturally osmotic, self-purification
Body ".
Important component of the water-permeable brick as sponge urban construction plays important work to alleviating urban waterlogging problem
With.Chinese scholar achieves great successes in terms of the research and development of water-permeable brick at present, wherein, pass through resin solidification cementation system
Resin base water-permeable brick there is good intensity and water permeability, but because its porosity is larger, sand base water-permeable brick it is dust-proof, anti-
Dirt effect is poor, and surface is easy to contaminated object and blocks, and significantly reduces its adaptability and durability, thus resin base automatically cleaning
The research and development of water-permeable brick are just particularly important.
The automatically cleaning water-permeable brick obtained by Chinese scholar is usually fired brick at present, this kind of water-permeable brick passes through nano-TiO2's
Photocatalytic Degradation decomposes the pollutants such as the greasy dirt on water-permeable brick surface, realizes the self-cleaning function of material.But due to this kind thoroughly
Water brick needs very high calcining heat, and energy consumption is larger, and environmental pollution is more serious, does not meet the environmental protection reason of current " green low-carbon "
It reads.And the research and application of resin base automatically cleaning water-permeable brick are less.In view of the problems of the existing technology with the office of research field
Sex-limited, there is an urgent need for develop a kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick.
The content of the invention
It is an object of the invention to provide a kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick and its preparation sides
Method, the present invention are reduced the surface energy of water-permeable brick surface and hole inner wall using nano modification fluorinated acrylic ester, make water droplet saturating
Water brick surface and hole inner wall have higher contact angle and relatively low roll angle, so that water-permeable brick is with good hydrophobic
Effect, can solve resin base automatically cleaning water-permeable brick in use the pollutants such as flue gas easily attach in water-permeable brick surface into
And the problems such as block pores, have many advantages, such as that preparation process is simple, automatically cleaning effect is good, durability is good, effectively improve water-permeable brick
Self-cleaning performance and water permeability.
A kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick provided by the invention, by the raw material of following parts by weight
It is made:Quartz sand 600-650 parts by weight, epoxy resin 22-25 parts by weight, curing agent 6-8 parts by weight, silica flour 3-5 parts by weight,
Nano modification fluorinated acrylic ester 15-20 parts by weight.
In the present invention, the epoxy resin uses E20 epoxy resin or E21 epoxy resin;The curing agent is solid using 703
Agent or 593 curing agent.
In the present invention, the quartz sand particle size is 40-70 mesh, and particle is circle.
In the present invention, the modification mode of the modified fluorinated acrylate is to use Nano-meter SiO_22It is modified.
A kind of preparation method of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick, is as follows:
(1)Fluorinated acrylic ester is obtained with continuous free radical solution polymerization legal system, and uses Nano-meter SiO_22It is modified, obtained nanometer changes
Property fluorinated acrylic ester;
(2)By quartz sand, epoxy resin, curing agent and silica flour and step(1)Modified fluorinated crylic acid ester mixture is made,
It stirs evenly, obtains mixture;
(3)By step(2)Mixture obtained carries out uniform distribution in a mold, and using forcing press, is pushed in 15Mpa pressure
System 1.5 minutes, obtains required water-permeable brick.
By using above-mentioned technical solution, the beneficial effects of the invention are as follows:
The present invention reduces the surface energy of water-permeable brick surface and hole inner wall using fluorinated acrylic ester, and utilizes Nano-meter SiO_22To fluorine
Change acrylate to be modified, stability of the fluorinated acrylic ester in water-permeable brick is effectively increased, along with water-permeable brick surface
And hole inner wall is coarse structure in itself, water droplet has higher contact angle and relatively low in water-permeable brick surface and hole inner wall
Roll angle, thus water-permeable brick has good hydrophobic performance, the present invention can solve resin base automatically cleaning water-permeable brick and use
The pollutants such as flue gas are easily attached in water-permeable brick surface and block pores in journey, and then influence the self-cleaning performance and thoroughly of water-permeable brick
The problems such as aqueous energy, has many advantages, such as preparation process letter, automatically cleaning effect is good, durability is good.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, with reference to
Specific embodiment, the present invention is further explained.
Embodiment 1:
The present invention provides a kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick brick and preparation method thereof, and preparation process is such as
Shown in lower:1. the preparation of fluorinated acrylic ester;2. the preparation of nano modification fluorinated acrylic ester;3. efficiently durable super-hydrophobic tree
The preparation of aliphatic radical automatically cleaning water-permeable brick.Specific preparation process is as follows:
1. the preparation of fluorinated acrylic ester:
(1)By methyl methacrylate (MMA), butyl acrylate (BA), acrylic acid (AA), dodecafluoroheptyl methacrylate
(G-04) and senecioate-hydroxypropyl acrylate respectively takes 5ml to pour into beaker, is mixed evenly, gained monomer mixture solution conduct
The acrylic monomers of free radical polymerization.
(2)50ml butyl acetates are added in four-hole boiling flask, using electrically heated mode, until the reflux temperature of butyl acetate
Degree keeps 10min.
(3)10ml oxidation phenyl-diformyls (BPO) are added to step(1)In monomer mixed solution obtained, it is allowed to abundant
Dissolving.Then the monomer mixed solution for having dissolved oxidation phenyl-diformyl is slowly dropped to and added in butyl acetate four-hole bottle, and
2h is kept the temperature at a reflux temperature, and fluorinated acrylic ester is made.
2. the preparation of nano modification fluorinated acrylic ester:
Weigh 10g Nano-meter SiO_2s2Particle and 30ml steps 1. fluorinated acrylic ester obtained, mix and ultrasonic disperse 30min, so
Mixed liquor is added in four-hole boiling flask afterwards, using electrically heated mode, until the reflux temperature of butyl acetate, keeps 1h, is made and receives
The modified fluorinated acrylate of rice.
3. the preparation of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick:
It is 4. 620g quartz sands, 22g E20 epoxy resin, 703 curing agent of 7g, 3g silica flours, 15g such as steps is 2. described obtained
Nano modification fluorinated acrylic ester be mixed evenly, carry out cloth in 160mm * 130mm * 40mm molds, and make
It with forcing press, is suppressed 1.5 minutes under 15Mpa pressure, efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick, size is made
For 160mm * 130mm * 25mm.
Embodiment 2
The present invention provides a kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick and preparation method thereof, and preparation process is as follows
It is shown:1. the preparation of fluorinated acrylic ester;2. the preparation of nano modification fluorinated acrylic ester;3. efficiently durable super-hydrophobic resin
The preparation of base automatically cleaning water-permeable brick.Specific preparation process is as follows:
Wherein, step 1., 2., 3. with embodiment 1;
4. by 630g quartz sands, 23g E21 epoxy resin, 593 curing agent of 8g, 3g silica flours, 18g such as 1 step of embodiment 2. institute
It states nano modification fluorinated acrylic ester obtained to be mixed evenly, cloth is carried out in 160mm * 130mm * 40mm molds
Material, and using forcing press, suppressed 1.5 minutes under 15Mpa pressure, the super-hydrophobic resin base automatically cleaning for being made efficiently durable is permeable
Brick, size are 160mm * 130mm * 25mm.
Embodiment 3
The present invention provides a kind of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick and preparation method thereof, and preparation process is as follows
It is shown:1. the preparation of fluorinated acrylic ester;2. the preparation of nano modification fluorinated acrylic ester;3. efficiently durable super-hydrophobic resin
The preparation of base automatically cleaning water-permeable brick.Specific preparation process is as follows:
Wherein, step 1., 2., 3. with embodiment 1;
4. by 630g quartz sands, 25g E21 epoxy resin, 703 curing agent of 8g, 4g silica flours, 20g such as 1 step of embodiment 2. institute
It states nano modification fluorinated acrylic ester obtained to be mixed evenly, cloth is carried out in 160mm * 130mm * 40mm molds
Material, and using forcing press, suppressed 1.5 minutes under 15Mpa pressure, the super-hydrophobic resin base automatically cleaning for being made efficiently durable is permeable
Brick, size are 160mm * 130mm * 25mm.
Performance test
The efficient durable super-hydrophobic resin base automatically cleaning water-permeable brick that embodiment 1,2 and 3 is obtained is separately formed, and by embodiment
1st, the nano modification fluorinated acrylic ester used in 2 and 3 is changed to the water of equivalent and equal proportion water-reducing agent and is separately formed, corresponding life
Entitled comparative example 1,2 and 3.It is small to be placed in standing 24 in 20 ± 5 DEG C of environment with covered rearing with plastic film surface after specimen molding
When, it then numbers, form removal.It is 20 ± 2 DEG C that test specimen is moved into temperature immediately after form removal, and the standard that relative humidity is more than 95% is supported
Maintenance is to 28d under the conditions of shield, then detects its compression strength, coefficient of permeability, permeable timeliness, the compression strength after 6 months and thoroughly
Water coefficient.
Measurement result is shown in Table 1:
Embodiment 1 | Comparative example 1 | Embodiment 2 | Comparative example 2 | Embodiment 3 | Comparative example 3 | |
Compression strength(MPa) | 47.5 | 47.5 | 47.8 | 47.6 | 47.2 | 46.8 |
Coefficient of permeability(10-2cm/s) | 15.1 | 11.8 | 15.9 | 11.7 | 16.1 | 11.8 |
Permeable timeliness(It is secondary) | 13 | 11 | 13 | 11 | 13 | 11 |
Use compression strength after 6 months(MPa) | 46.7 | 45.1 | 46.9 | 45.2 | 46.8 | 45.3 |
Use coefficient of permeability after 6 months(10-2cm/s) | 14.7 | 10.1 | 15.1 | 10.1 | 15.3 | 10.0 |
As shown in Table 1, the water permeability of the efficient durable super-hydrophobic resin base automatically cleaning water-permeable brick prepared by the present invention and anti-
Compressive Strength is excellent, and with higher permeable timeliness, it is smaller using coefficient of permeability attenuation after 6 months.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should it is described using scope of the claims as
It is accurate.
Claims (5)
1. a kind of efficiently durable super-hydrophobic resin automatically cleaning water-permeable brick, which is characterized in that be made of the raw material of following parts by weight:
Quartz sand 600-650 parts by weight, epoxy resin 22-25 parts by weight, curing agent 6-8 parts by weight, silica flour 3-5 parts by weight, nanometer
Modified fluorinated acrylate 15-20 parts by weight.
A kind of 2. efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick according to claim 1, which is characterized in that institute
Epoxy resin is stated using E20 epoxy resin or E21 epoxy resin;The curing agent uses 703 curing agent or 593 curing agent.
A kind of 3. efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick according to claim 1, which is characterized in that institute
Quartz sand particle size is 40-70 mesh, and particle is circle.
A kind of 4. efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick according to claim 1, which is characterized in that institute
The modification mode of modified fluorinated acrylate is stated to use Nano-meter SiO_22It is modified.
5. a kind of a kind of preparation method of efficiently durable super-hydrophobic resin base automatically cleaning water-permeable brick as described in claim 1,
It is characterized in that it is as follows:
(1)Fluorinated acrylic ester is obtained with continuous free radical solution polymerization legal system, and uses Nano-meter SiO_22It is modified, obtained nanometer changes
Property fluorinated acrylic ester;
(2)By quartz sand, epoxy resin, curing agent and silica flour and step(1)Modified fluorinated crylic acid ester mixture is made,
It stirs evenly, obtains mixture;
(3)By step(2)Mixture obtained carries out uniform distribution in a mold, and using forcing press, is pushed in 15Mpa pressure
System 1.5 minutes, obtains required water-permeable brick.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108863231A (en) * | 2018-07-26 | 2018-11-23 | 万卓(武汉)新材料有限公司 | A kind of waterproof and breathable flexible clay facing tile and preparation method thereof |
CN109354898A (en) * | 2018-10-29 | 2019-02-19 | 江苏常阳科技有限公司 | A kind of hydrophobic tubular molding compound and preparation method thereof |
CN113149400A (en) * | 2021-03-31 | 2021-07-23 | 江苏赛恩工程技术有限公司 | Preparation process of heat-insulating external wall tile |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106348650A (en) * | 2016-08-16 | 2017-01-25 | 明光市凯旋新型建材厂 | Production technology of resin sand-based water permeable bricks |
-
2017
- 2017-12-18 CN CN201711362183.1A patent/CN108101417A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106348650A (en) * | 2016-08-16 | 2017-01-25 | 明光市凯旋新型建材厂 | Production technology of resin sand-based water permeable bricks |
Non-Patent Citations (2)
Title |
---|
吴超等: "《微颗粒黏附与清除》", 31 January 2014, 冶金工业出版社 * |
曲广雷等: "一种内疏水型透水混凝土的研制", 《北华大学学报》 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108863231A (en) * | 2018-07-26 | 2018-11-23 | 万卓(武汉)新材料有限公司 | A kind of waterproof and breathable flexible clay facing tile and preparation method thereof |
CN108863231B (en) * | 2018-07-26 | 2021-04-13 | 万卓(武汉)新材料有限公司 | Waterproof breathable flexible facing brick and preparation method thereof |
CN109354898A (en) * | 2018-10-29 | 2019-02-19 | 江苏常阳科技有限公司 | A kind of hydrophobic tubular molding compound and preparation method thereof |
CN113149400A (en) * | 2021-03-31 | 2021-07-23 | 江苏赛恩工程技术有限公司 | Preparation process of heat-insulating external wall tile |
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