CN113277824A - Curing method for inorganic glue impregnated carbon fiber - Google Patents
Curing method for inorganic glue impregnated carbon fiber Download PDFInfo
- Publication number
- CN113277824A CN113277824A CN202110264753.3A CN202110264753A CN113277824A CN 113277824 A CN113277824 A CN 113277824A CN 202110264753 A CN202110264753 A CN 202110264753A CN 113277824 A CN113277824 A CN 113277824A
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- inorganic
- impregnated
- impregnated carbon
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B14/38—Fibrous materials; Whiskers
- C04B14/386—Carbon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Nanotechnology (AREA)
- Civil Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a curing method for inorganic glue impregnated carbon fibers, which consists of 2-3 parts by volume of water glass and 1-1.5 parts by volume of an internal-doped waterproof agent, wherein carbon fiber cloth is impregnated into inorganic glue, is impregnated for 10-15min by adopting a wood brush in a pressing mode, and then is taken out and dried. The invention can resist higher temperature, the bonding strength can not be suddenly reduced along with the temperature rise, thereby ensuring the shearing force between the transmission fibers and the foundation of the combined action with concrete, and the invention has simple manufacture and quick drying.
Description
Technical Field
The invention belongs to the field of buildings, and particularly relates to a curing method for inorganic glue impregnated carbon fibers.
Background
With the increasing demand of building structure repair and reinforcement, carbon fiber materials are widely used in the field of building structure reinforcement due to the advantages of light weight, high strength, corrosion resistance, good durability, convenient construction and the like. One of the applications is a fiber woven mesh Reinforced Concrete (TRC), which is a novel composite material and mainly comprises a multi-axial fiber woven mesh and fine Concrete. As the main component of the carbon fiber mesh cloth, the carbon fiber has good high-temperature mechanical property under the anaerobic condition, and the strength of the carbon fiber mesh cloth is not reduced along with the temperature rise within 1000 ℃. But currently the epoxy glue used is reinforced. Glass transition temperature (T)g60-82 ℃ lower, and the thermal stability and long-term chemical stability of the product are poorer. When the temperature reaches the glass transition temperature TgWhen the adhesive strength of the organic adhesive is reduced, the shear force between the transmission fibers is lostAnd the effect is to reduce the bearing capacity and rigidity of the reinforced structure. And the TRC component protective layer is thin, the protective effect of the matrix material on the fiber is weak under the high-temperature condition, the high-temperature resistance of the component is not facilitated, and the high-temperature resistance requirement is difficult to meet by adhering the epoxy organic glue to the carbon fiber fabric reinforced concrete thin-plate structure. Therefore, the problem of high temperature resistance of the carbon fiber fabric reinforced concrete structure needs to be solved.
In order to solve the above problems, an inorganic gelling material such as an alkali-activated gelling material, magnesium oxychloride cement, a cement-based composite material, or the like is used to bond the carbon fiber fabric to the cement-based board or the like. However, the diameter of the carbon fiber is only 5-8 microns, so gaps among the carbon fibers are extremely small, and the existing inorganic cementing material has high viscosity, so that the carbon fibers are extremely difficult to penetrate into the gaps among the carbon fibers and are bonded into a whole, and a fiber bundle cannot be well constrained, so that the carbon fibers cannot be integrally stressed in a synergistic manner, and the utilization rate is low. Most of the carbon fiber cloth in the prior TRC plate is still impregnated by organic epoxy resin glue. However, the glass transition temperature (T) of the epoxy resin adhesives currently used for reinforcementg60-82 ℃ lower, and the thermal stability and long-term chemical stability of the product are poorer. When the temperature reaches the glass transition temperature TgIn the process, the bonding strength of the organic glue is reduced sharply, and the shearing force between the transmission fibers and the foundation acted with the concrete are lost, so that the bearing capacity and the rigidity of the reinforced structure are reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a curing method for impregnating carbon fibers with inorganic glue. The invention can resist higher temperature, the bonding strength can not be suddenly reduced along with the temperature rise, thereby ensuring the shearing force between the transmission fibers and the foundation of the combined action with concrete, and the invention has simple manufacture and quick drying.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a curing method of inorganic glue impregnated carbon fiber comprises the following steps:
step one, weighing 2-3 parts by volume of water glass and 1-1.5 parts by volume of an internal-mixing type waterproof agent;
step two, uniformly mixing the water glass and the internally doped waterproofing agent to obtain inorganic glue impregnated carbon fiber cloth;
and step three, dipping the carbon fiber cloth into the carbon fiber inorganic dipping glue, performing press type dipping for 10-15min by adopting a wood brush, and then taking out and drying.
Further improvement, the airing time is not less than 2 days within the range of 0-25 ℃, and is not less than 1.5 days when the airing time is higher than 25 ℃.
The further improvement is that the internally doped waterproofing agent is a sodium methylsilicate solution; the concentration of the sodium methylsilicate solution is 55-62%.
In a further improvement, the modulus of the water glass is 2.8-3.3.
The inorganic glue impregnated carbon fiber cloth prepared by the curing method of the inorganic glue impregnated carbon fiber has the advantages that:
(1) improve the high temperature resistance
Compared with epoxy resin, the inorganic adhesive can resist higher temperature, the bonding strength cannot be suddenly reduced, and the foundation of the shearing force between the transmission fibers and the combined action with concrete can be ensured.
(2) Low cost
The water glass and the waterproof agent have low price and respectively have early application in the field of building engineering.
(3) Time saving
Compared with epoxy resin, the epoxy resin is dried for a long time in autumn and winter, and needs 5-7 days to be completely hardened, and the inorganic adhesive can be hardened only in 2-3 days.
Drawings
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a graph showing the performance at 200 ℃ of the carbon fiber cloth impregnated with the inorganic paste of example 1;
FIG. 3 is a graph showing the performance of the carbon fiber cloth impregnated with the inorganic paste of example 1 at 100 ℃;
FIG. 4 is a graph showing the performance at 50 ℃ of the carbon fiber cloth impregnated with the inorganic paste of example 1;
FIG. 5 is a graph of performance at 50 ℃ after an uncoated carbon fiber cloth;
fig. 6 is a performance detection diagram of the carbon fiber cloth coated with epoxy resin at 50 ℃.
Detailed Description
The technical means of the present invention will be specifically described below by way of specific embodiments.
Example 1
A curing method of inorganic glue impregnated carbon fiber comprises the following steps:
step one, weighing 200ml of water glass and 150ml of sodium methylsilicate solution with the concentration of 55-62%;
step two, uniformly mixing the water glass and the sodium methylsilicate solution to obtain inorganic glue impregnated carbon fiber cloth;
and step three, dipping the carbon fiber cloth into the carbon fiber inorganic dipping glue, performing press type dipping for 10-15min by adopting a wood brush, and then taking out and drying. The air drying time is not less than 2 days at the temperature of 0-25 ℃, and is not less than 1.5 days at the temperature higher than 25 ℃.
As shown in fig. 2-5: the tensile load value range of the carbon fiber cloth soaked in the inorganic glue-soaked carbon fiber cloth at 200 ℃ is 1950N-2119N, the tensile load value range of the carbon fiber cloth soaked in the inorganic glue-soaked carbon fiber cloth at 100 ℃ is 1980N-2250N, the tensile load value range of the carbon fiber cloth soaked in the inorganic glue-soaked carbon fiber cloth at 50 ℃ is 2224N-2379N, the tensile load value range of the carbon fiber cloth not soaked in the glue at 50 ℃ is 1537N-1651N, and the tensile strength of the carbon fiber cloth soaked in the epoxy resin and completely dried at 50 ℃ is 1702N-1775N. (since epoxy exhibits softening and debonding phenomena above 60 ℃, tensile testing was not performed at temperatures greater than 60 ℃).
When the carbon fiber mesh cloth is impregnated with the cement-based composite material, the cement-based composite material cannot be completely impregnated, so that the carbon fiber mesh cloth is not suitable for the carbon fiber mesh cloth.
Example 2
A curing method of inorganic glue impregnated carbon fiber comprises the following steps:
step one, weighing 300ml of water glass and 150ml of sodium methylsilicate solution with the concentration of 55-62%;
step two, uniformly mixing the water glass and the sodium methylsilicate solution to obtain inorganic glue impregnated carbon fiber cloth;
and step three, dipping the carbon fiber cloth into the carbon fiber inorganic dipping glue, performing press type dipping for 10-15min by adopting a wood brush, and then taking out and drying. The air drying time is not less than 2 days at the temperature of 0-25 ℃, and is not less than 1.5 days at the temperature higher than 25 ℃.
The tensile load value of the carbon fiber cloth impregnated with the inorganic glue under 200 ℃ (high temperature performance) is 1950N-2119N.
Example 3
Wherein the proportion of water glass to the water-proof agent is changed as follows:
water glass and water-proofing agent 2:1
Water glass and water-proofing agent 1:1
1:2 ratio of water glass to water-proofing agent
1:3 ratio of water glass and water-proofing agent
The strength difference of the carbon fiber cloth obtained after the carbon fiber cloth is impregnated by the corresponding inorganic glue is not large, but white frost is easy to appear on the surface of the carbon fiber after more waterproof agents are added, and the waterproof effect is poor after less waterproof agents are added, so that the inorganic glue is not selected.
The above description is only one specific guiding embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention using this concept shall fall within the scope of the invention.
Claims (5)
1. The curing method for the inorganic glue impregnated carbon fiber is characterized by comprising the following steps:
step one, weighing 2-3 parts by volume of water glass and 1-1.5 parts by volume of an internal-mixing type waterproof agent;
step two, uniformly mixing the water glass and the internally doped waterproofing agent to obtain inorganic glue impregnated carbon fiber cloth;
and step three, dipping the carbon fiber cloth into the carbon fiber inorganic dipping glue, performing press type dipping for 10-15min by adopting a wood brush, and then taking out and drying.
2. The method for curing inorganic size-impregnated carbon fibers according to claim 1, wherein the air-drying time is not less than 2 days at 0 to 25 ℃ and not less than 1.5 days at a temperature higher than 25 ℃.
3. The method for curing inorganic size-impregnated carbon fibers according to claim 1, wherein the internal-doped water repellent is a sodium methylsilicate solution; the concentration of the sodium methylsilicate solution is 55-62%.
4. The method of claim 1, wherein the water glass has a modulus of 2.8 to 3.3.
5. An inorganic glue-impregnated carbon fiber cloth produced by the curing method of inorganic glue-impregnated carbon fibers according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110264753.3A CN113277824B (en) | 2021-03-11 | 2021-03-11 | Curing method of inorganic adhesive impregnated carbon fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110264753.3A CN113277824B (en) | 2021-03-11 | 2021-03-11 | Curing method of inorganic adhesive impregnated carbon fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113277824A true CN113277824A (en) | 2021-08-20 |
| CN113277824B CN113277824B (en) | 2022-06-14 |
Family
ID=77275926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110264753.3A Active CN113277824B (en) | 2021-03-11 | 2021-03-11 | Curing method of inorganic adhesive impregnated carbon fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113277824B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100183862A1 (en) * | 2007-04-13 | 2010-07-22 | Toho Tenax Co., Ltd. | Resin composition, and prepreg |
| CN102863199A (en) * | 2012-09-21 | 2013-01-09 | 华南理工大学 | Preparation of geopolymer inorganic gelled material combining fire insulating and protecting functions and application |
| CN103072346A (en) * | 2012-06-19 | 2013-05-01 | 厦门朝富人造革有限公司 | Thermoplastic foaming polyurethane fiber board, production method and uses thereof |
| CN103710983A (en) * | 2012-09-29 | 2014-04-09 | 北京建筑材料科学研究总院有限公司 | Preparation method for waterproof and breathable glass wool board |
| CN104240789A (en) * | 2013-06-21 | 2014-12-24 | 河南科信电缆有限公司 | Carbon fiber complex core type overhead photoelectric insulated cable |
| WO2017016436A1 (en) * | 2015-07-27 | 2017-02-02 | 比亚迪股份有限公司 | Preimpregnated fiber cloth and preparation method therefor |
| US20200115514A1 (en) * | 2017-05-26 | 2020-04-16 | Dic Corporation | Fiber sizing agent, fiber material, molding material and molding |
-
2021
- 2021-03-11 CN CN202110264753.3A patent/CN113277824B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100183862A1 (en) * | 2007-04-13 | 2010-07-22 | Toho Tenax Co., Ltd. | Resin composition, and prepreg |
| CN103072346A (en) * | 2012-06-19 | 2013-05-01 | 厦门朝富人造革有限公司 | Thermoplastic foaming polyurethane fiber board, production method and uses thereof |
| CN102863199A (en) * | 2012-09-21 | 2013-01-09 | 华南理工大学 | Preparation of geopolymer inorganic gelled material combining fire insulating and protecting functions and application |
| CN103710983A (en) * | 2012-09-29 | 2014-04-09 | 北京建筑材料科学研究总院有限公司 | Preparation method for waterproof and breathable glass wool board |
| CN104240789A (en) * | 2013-06-21 | 2014-12-24 | 河南科信电缆有限公司 | Carbon fiber complex core type overhead photoelectric insulated cable |
| WO2017016436A1 (en) * | 2015-07-27 | 2017-02-02 | 比亚迪股份有限公司 | Preimpregnated fiber cloth and preparation method therefor |
| US20200115514A1 (en) * | 2017-05-26 | 2020-04-16 | Dic Corporation | Fiber sizing agent, fiber material, molding material and molding |
Non-Patent Citations (1)
| Title |
|---|
| 张美云主编: "《造纸技术》", 31 January 2014, 中国轻工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113277824B (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Toutanji et al. | Durability characteristics of concrete beams externally bonded with FRP composite sheets | |
| CN105419815B (en) | A kind of polymeric soil curing agent | |
| CN106398119B (en) | A kind of fibre-reinforced bio-resin glue composite material and preparation method | |
| Aiello et al. | Effects of environmental conditions on performance of polymeric adhesives for restoration of concrete structures | |
| CN110423587A (en) | A kind of novel carbon fiber reinforcement is with applying primer and preparation method thereof | |
| CN113277824B (en) | Curing method of inorganic adhesive impregnated carbon fiber | |
| CN105802566B (en) | A kind of epoxy resin adhesive pasted for moist concrete surface C FRP | |
| Douier et al. | Durability performance of RC beams strengthened with CFRP laminates and galvanized steel mesh bonded with epoxy and mortar systems | |
| CN106189973B (en) | A kind of fast curable type epoxy impregnation glue and preparation method thereof | |
| CN103664025A (en) | Method of improving bonding performance of fiber bundle and potassium magnesium phosphate cement-based material | |
| Al-Safy et al. | A study of the use of high functionality-based resin for bonding between CFRP and concrete under harsh environmental conditions | |
| CN1250667C (en) | Dynamic structural adhesive for bridge | |
| CN105484355A (en) | Connecting system of wood-concrete combined structure | |
| Abdullah et al. | Modified epoxy for fibre reinforced polymer strengthening of concrete structures | |
| CN115141590A (en) | Bridge expansion joint filling material and construction method adopting same | |
| CN110028929B (en) | Bridge deck waterproof bonding layer material and preparation method thereof | |
| CN114059720B (en) | Preparation method of basalt fiber toughened bamboo reinforcement | |
| CN110499741A (en) | A kind of concrete dam antiseepage and reinforcing flexible fiber composite sheet and preparation method thereof | |
| CN117698233B (en) | Multi-layer composite glass fiber super-strong felt and preparation method thereof | |
| CN203429811U (en) | Fibre-reinforced fireproof coiled material | |
| CN114382055B (en) | Asphalt concrete sliding joint structure and construction process | |
| CN115534431A (en) | Continuous fabric reinforced mortar composite material and preparation method thereof | |
| CN110922731B (en) | Weather-proof daylighting panel and processing technology thereof | |
| Frigione | Fiber reinforced polymers in civil engineering: durability issues | |
| CN116514453A (en) | Adhesive for energy conservation and heat preservation of building and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |