CN109437735A - A kind of super-hydrophobic cement and its application method - Google Patents
A kind of super-hydrophobic cement and its application method Download PDFInfo
- Publication number
- CN109437735A CN109437735A CN201811399063.3A CN201811399063A CN109437735A CN 109437735 A CN109437735 A CN 109437735A CN 201811399063 A CN201811399063 A CN 201811399063A CN 109437735 A CN109437735 A CN 109437735A
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- Prior art keywords
- cement
- super
- hydrophobic
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- ptfe
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of super-hydrophobic cement, which is characterized in that the component including following parts by weight: 100 parts of cement, 0.5 ~ 4 part of ptfe micropowder, and the diameter of ptfe micropowder is 10 ~ 100 μm.The present invention without adding complicated additive, ptfe micropowder in whipping process due to tension force effect can self-assemble on cement products surface, with cement products surface good bond after cement setting hardening, while cement products being made to obtain surface super-hydrophobic.The present invention is recycled using waste material processing, cost of material is relatively low, the present invention is without adding complicated additive, without carrying out surface coated treatment, hydrophobic properties of the surface are good, simple production process, it is suitable for mass production, added value of product is high, therefore has significant economic benefit and application value, with good application prospect.
Description
Technical field
The field of building materials of the present invention, more particularly, to a kind of super-hydrophobic cement and its application method.
Background technique
Cement concrete has been always the most important structural material of architectural engineering since coming out, and is widely used.With
The progress and development of science and technology and the raising of people's level of understanding, cement concrete have opened up new purposes again, dress of marching toward
Exterior material ranks.Cement concrete is a kind of durable material, but is substantially a kind of porous material heterogeneous, in dioxy
It under the corrosion function for changing the medium of carbon, water, chloride ion, sulfate etc., is unavoidably influenced and is corroded by foeign element, mixed
Solidifying soil can accelerate the failure, and service life greatly shortens.For example, containing hydrated calcium silicate and hydrogen in the hydrated product of portland cement
Calcium oxide, calcium hydroxide are the necessary guarantees that hydrated calcium silicate is stabilized, when cement concrete product is with rainwater, river water etc.
Calcium hydroxide gradually can be dissolved and be migrated during Long Term Contact, lead to the decomposition of hydrated calcium silicate in hydrated product, cement system
The decline of product intensity, generates security risk, seriously affects the durability of cement concrete.
Since " lotus leaf effect " discovery, super hydrophobic surface is widely applied in fields such as anti-corrosion, automatically cleaning, water-oil separatings.
When aqueous solution falls on super hydrophobic surface, droplet can be spontaneously formed and be rolled off super hydrophobic surface rapidly.When cement products is with super thin
Water surface can effectively weaken the effect to calcium hydroxide in cement products such as aqueous solution.Therefore, building has super hydrophobic surface
Cement products is the effective way for alleviating or solving cement concrete endurance issues.Patent of invention: a kind of super-hydrophobic cement and
By the way that cement powder, fine sand and hydrophobic modifier are successively added in ethanol in preparation method and application [CN108341635A],
Then high-speed stirred obtains modified cement fine sand solution；It by modified cement fine sand solution filtering, dries and is crushed, obtain super thin
Water cement fine sand mixed powder；Under low-speed machinery stirring condition, by super-hydrophobic cement fine sand mixed powder investment containing surfactant,
In the aqueous solution of dispersing agent and silicon fluoride, then mechanical stirring, forms super-hydrophobic cement.But the patent preparation method is more multiple
It is miscellaneous, need first to prepare modified cement fine sand solution, it is also necessary to a large amount of additive package be added, on the one hand can improve and be produced into
This, in addition also will affect the overall performance of cement.A kind of patent of invention: processing method of silicate cement mud product super hydrophobic surface
By first preparing silicate cement mud product in [CN106187314B], then by chain alkyl fatty acid and methyltriethoxy silane
Alkane is dissolved in dehydrated alcohol at 50 ~ 60 DEG C, naturally dry by portland cement article impregnation 1 ~ 30 minute in above-mentioned solution
Dry rear surface has super-hydrophobicity.But the patent needs after cement products prepares again by surface treatment, Wu Fa
Super hydrophobic surface is spontaneously formed in cement products preparation process, this method is not suitable for the super hydrophobic surface processing of large area.
In view of the drawbacks of the prior art, the present invention is proposed.
Summary of the invention
Goal of the invention of the invention is intended to alleviate or solve resistance to caused by cement concrete product is corroded due to solution
Long property problem, while the problems such as overcome additive component complexity and cumbersome technique in existing super-hydrophobic cement preparation method.
For achieving the above object, the technical scheme is that a kind of super-hydrophobic cement, including following parts by weight
Component:
100 parts of cement, 0.5 ~ 4 part of ptfe micropowder, the diameter of ptfe micropowder are 10 ~ 100 μm.
Further to improve, the polytetrafluoroethylene (PTFE) is the polyfluortetraethylewastes wastes that industrial production process generates, into
Processing in row ball milling 2 ~ 4 hours obtains.
Further to improve, the diameter of the ptfe micropowder is 10 ~ 20 μm.
Further to improve, the cement is portland cement.
A kind of application method of super-hydrophobic cement as described in claim 1, comprising the following steps:
Step 1 weighs super-hydrophobic cement and water and normal sand is added, be uniformly mixed, forms cement slurry；The cement slurry
Body includes the component of following parts by weight: 100 parts of cement, 0 ~ 300 part of normal sand, 30 ~ 50 parts of water, 0.5 ~ 4 part of polytetrafluoroethylene (PTFE)；
Step 2, the cement slurry that step 1 is obtained pour into cement products, and maintenance 20 of divulging information under natural environment ~ for 24 hours, condensation
After demould；
Step 3 further conserves 48h under natural environmental condition, obtains having the cement of super hydrophobic surface mixed after hardening
Solidifying soil product.
Further to improve, the cement slurry includes the component of following parts by weight: 100 parts of ordinary portland cement, mark
0 part of quasi- sand, 30 parts of water, 1.6 parts of polytetrafluoroethylene (PTFE).
Further to improve, the cement slurry includes the component of following parts by weight: 100 parts of ordinary portland cement, mark
0 part of quasi- sand, 30 parts of water, 1.6 parts of polytetrafluoroethylene (PTFE).
Further to improve, the polytetrafluoroethylene (PTFE) is the polyfluortetraethylewastes wastes that industrial production process generates, into
Processing in row ball milling 2 ~ 4 hours obtains.
Further to improve, the diameter of the ptfe micropowder is 10 ~ 20 μm.
Further to improve, the cement is portland cement.
The beneficial effects of the present invention are:
The present invention is without adding complicated additive, and ptfe micropowder is in whipping process since tension force effect can self-assemble
On cement products surface, with cement products surface good bond after cement setting hardening, while cement products being made to obtain surface
Super-hydrophobicity.The present invention is recycled using waste material processing, and cost of material is relatively low, and the present invention is complicated additional without adding
Agent, without carrying out surface coated treatment, hydrophobic properties of the surface are good, and simple production process is suitable for mass production, and product is additional
Value is high, therefore has significant economic benefit and application value, with good application prospect.
Detailed description of the invention
When considered in conjunction with the accompanying drawings, by referring to following detailed description, the present invention can be more completely and better understood with
And be easy to learn many adjoint advantages, but the drawings described herein are used to provide a further understanding of the present invention,
A part of the invention is constituted, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, does not constitute to this hair
Bright improper restriction, in which:
Fig. 1 is ptfe micropowder scanning electron microscope (SEM) picture of the invention；
Super-hydrophobic cement surface water droplet form photo Fig. 2 of the invention；
Super-hydrophobic cement surface water droplet contact angle photo Fig. 3 of the invention；
Super-hydrophobic cement surface SEM picture Fig. 4 of the invention.
Specific embodiment
Below in conjunction with attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
[embodiment 1]
The preparation method of the super-hydrophobic cement of the present embodiment, the selected raw material for meeting product demand, is claimed according to raw material proportioning
Material, proportion are (weight ratio): 100 parts of ordinary portland cement, 300 parts of normal sand, 50 parts of water, 3.2 parts of polytetrafluoroethylene (PTFE),
It is sufficiently mixed in blender uniformly；Cement slurry is poured into preforming die, jolt ramming, divulges information, conserve 20h in a natural environment, to
It is demoulded after sufficiently condensing；Further maintenance hardening in a natural environment, reaches required intensity index, that is, obtains novel
Super-hydrophobic cement products uses contact angle instrument to measure contact angle as 151.6 °.
[embodiment 2]
The preparation method of the super-hydrophobic cement of the present embodiment, the selected raw material for meeting product demand, is claimed according to raw material proportioning
Material, proportion are (weight ratio): 100 parts of ordinary portland cement, 0 part of normal sand, 30 parts of water, 1.6 parts of polytetrafluoroethylene (PTFE) are stirring
It mixes and is sufficiently mixed in machine uniformly；
Cement slurry is poured into preforming die, jolt ramming, divulges information, conserve for 24 hours, taken off after it is sufficiently condensed in a natural environment
Mould；Further maintenance hardening in a natural environment, reaches required intensity index, that is, obtains novel super-hydrophobic cement products, adopt
Measuring contact angle with contact angle instrument is 142 °.
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of super-hydrophobic cement, which is characterized in that the component including following parts by weight:
100 parts of cement, 0.5 ~ 4 part of ptfe micropowder, the diameter of ptfe micropowder are 10 ~ 100 μm.
2. a kind of super-hydrophobic cement according to claim 1, which is characterized in that the polytetrafluoroethylene (PTFE) adds for industrial production
The polyfluortetraethylewastes wastes that work process generates carry out processing in ball milling 2 ~ 4 hours and obtain.
3. a kind of super-hydrophobic cement according to claim 1, which is characterized in that the diameter of the ptfe micropowder is
10~20μm。
4. a kind of super-hydrophobic cement according to claim 1, which is characterized in that the cement is portland cement.
5. a kind of application method of super-hydrophobic cement as described in claim 1, which comprises the following steps:
Step 1 weighs super-hydrophobic cement and water and normal sand is added, be uniformly mixed, forms cement slurry；The cement slurry
Body includes the component of following parts by weight: 100 parts of cement, 0 ~ 300 part of normal sand, 30 ~ 50 parts of water, 0.5 ~ 4 part of polytetrafluoroethylene (PTFE)；
Step 2, the cement slurry that step 1 is obtained pour into cement products, and maintenance 20 of divulging information under natural environment ~ for 24 hours, condensation
After demould；
Step 3 further conserves 48h under natural environmental condition, obtains having the cement of super hydrophobic surface mixed after hardening
Solidifying soil product.
6. a kind of application method of super-hydrophobic cement according to claim 4, which is characterized in that the cement slurry includes
The component of following parts by weight: 100 parts of ordinary portland cement, 0 part of normal sand, 30 parts of water, 1.6 parts of polytetrafluoroethylene (PTFE).
7. a kind of application method of super-hydrophobic cement according to claim 4, which is characterized in that the cement slurry includes
The component of following parts by weight: 100 parts of ordinary portland cement, 0 part of normal sand, 30 parts of water, 1.6 parts of polytetrafluoroethylene (PTFE).
8. a kind of application method of super-hydrophobic cement according to claim 4, which is characterized in that the polytetrafluoroethylene (PTFE) is
The polyfluortetraethylewastes wastes that industrial production process generates carry out processing in ball milling 2 ~ 4 hours and obtain.
9. a kind of application method of super-hydrophobic cement according to claim 4, which is characterized in that the polytetrafluoroethylene (PTFE) is micro-
The diameter of powder is 10 ~ 20 μm.
10. a kind of application method of super-hydrophobic cement according to claim 4, which is characterized in that the cement is silicic acid
Salt cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811399063.3A CN109437735A (en) | 2018-11-22 | 2018-11-22 | A kind of super-hydrophobic cement and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811399063.3A CN109437735A (en) | 2018-11-22 | 2018-11-22 | A kind of super-hydrophobic cement and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109437735A true CN109437735A (en) | 2019-03-08 |
Family
ID=65554115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811399063.3A Pending CN109437735A (en) | 2018-11-22 | 2018-11-22 | A kind of super-hydrophobic cement and its application method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001019932A2 (en) * | 1999-09-15 | 2001-03-22 | Georg Gros | Agents for producing self-cleaning thin surface coatings and methods suited therefor |
| JP2005082715A (en) * | 2003-09-09 | 2005-03-31 | Fine Technology:Kk | Hydrophilic agent |
| CN103979871A (en) * | 2014-05-09 | 2014-08-13 | 沈南生 | Hydrophobic polymer emulsion and its application |
| CN105198243A (en) * | 2015-09-15 | 2015-12-30 | 和县浙徽新型材料有限公司 | Water-proof ultra-fine slag powder and preparation method thereof |
| CN105622007A (en) * | 2015-12-21 | 2016-06-01 | 潍坊市宏源防水材料有限公司 | Environmentally-friendly flame-retardant polymer cement waterproof coating and production process therefor |
| CN107244847A (en) * | 2016-11-16 | 2017-10-13 | 大连理工大学 | A kind of preparation method of the super-hydrophobic concrete of high hardness wear-resisting |
| CN108341635A (en) * | 2018-02-11 | 2018-07-31 | 东南大学 | A kind of super-hydrophobic cement and its preparation method and application |
| CN108546046A (en) * | 2018-05-22 | 2018-09-18 | 成都新柯力化工科技有限公司 | A kind of external wall hydrophobic flexible heat-insulating mortar and preparation method |
-
2018
- 2018-11-22 CN CN201811399063.3A patent/CN109437735A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001019932A2 (en) * | 1999-09-15 | 2001-03-22 | Georg Gros | Agents for producing self-cleaning thin surface coatings and methods suited therefor |
| JP2005082715A (en) * | 2003-09-09 | 2005-03-31 | Fine Technology:Kk | Hydrophilic agent |
| CN103979871A (en) * | 2014-05-09 | 2014-08-13 | 沈南生 | Hydrophobic polymer emulsion and its application |
| CN105198243A (en) * | 2015-09-15 | 2015-12-30 | 和县浙徽新型材料有限公司 | Water-proof ultra-fine slag powder and preparation method thereof |
| CN105622007A (en) * | 2015-12-21 | 2016-06-01 | 潍坊市宏源防水材料有限公司 | Environmentally-friendly flame-retardant polymer cement waterproof coating and production process therefor |
| CN107244847A (en) * | 2016-11-16 | 2017-10-13 | 大连理工大学 | A kind of preparation method of the super-hydrophobic concrete of high hardness wear-resisting |
| CN108341635A (en) * | 2018-02-11 | 2018-07-31 | 东南大学 | A kind of super-hydrophobic cement and its preparation method and application |
| CN108546046A (en) * | 2018-05-22 | 2018-09-18 | 成都新柯力化工科技有限公司 | A kind of external wall hydrophobic flexible heat-insulating mortar and preparation method |
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Application publication date: 20190308 |