CN111809267A - High-strength high-modulus nonmetal coarse fiber for concrete and preparation method thereof - Google Patents
High-strength high-modulus nonmetal coarse fiber for concrete and preparation method thereof Download PDFInfo
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- CN111809267A CN111809267A CN202010572465.XA CN202010572465A CN111809267A CN 111809267 A CN111809267 A CN 111809267A CN 202010572465 A CN202010572465 A CN 202010572465A CN 111809267 A CN111809267 A CN 111809267A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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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
- C04B14/38—Fibrous materials; Whiskers
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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
- C04B14/38—Fibrous materials; Whiskers
- C04B14/42—Glass
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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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/06—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Textile Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Civil Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention provides a high-strength high-modulus nonmetal coarse fiber for concrete and a preparation method thereof; the high-strength high-modulus nonmetal coarse fibers comprise modified polypropylene serving as a base material, a plurality of high-strength high-modulus nonmetal continuous fibers are axially distributed in the base material, and the base material is tightly combined with the nonmetal continuous fibers; when the material is used in concrete, the material can endow the concrete with better mechanical property, and simultaneously, the self weight of the concrete is reduced. Further, since the modified polypropylene has excellent alkali resistance, it can maintain excellent mechanical properties in strongly alkaline concrete for a long period of time.
Description
Technical Field
The invention relates to the field of new material manufacturing, in particular to a high-strength high-modulus nonmetal coarse fiber for concrete and a preparation method thereof.
Background
As an excellent civil construction material, cement concrete has been used for more than 170 years, and various well-known methods are provided for improving the performance and overcoming the defects of low tensile strength, large shrinkage deformation, brittleness, deflection intolerance and the like, but the requirement of the rapid development of the current civil construction industry cannot be met. In the middle of sixties, in order to solve the problem of freezing and brittle damage of a concrete enclosure structure of a northern Europe coal mine port, Europe researches and evaluates more than ten fiber materials which are sequentially applied to cement concrete, and a large amount of achievements are obtained.
The fiber which can be used for reinforcing concrete is divided into steel fiber and non-steel fiber, wherein the non-steel fiber is divided into high elastic fiber (Ef/Ec is more than 1, such as carbon fiber, asbestos fiber, glass fiber and the like) and low elastic fiber (Ef/Ec is less than or equal to 1, such as synthetic fiber of nylon, polypropylene and the like), and the Ef/Ec is the elastic modulus ratio of the fiber and the concrete. Wherein:
polypropylene fiber: the fiber has the advantages of moderate tensile strength, general modulus, acid and alkali resistance, almost no water absorption, no change of dry and wet fiber strength, small specific gravity, low price and good associativity with cement, and is considered to be one of the most industrially valuable fiber varieties.
Polypropylene is a typical polyolefin-based crystalline polymer. The main mechanical properties of a general polypropylene fiber (short fiber) are: the bulk density is 8.829KN/m3, the elastic modulus is 1.57-4.41 KN/mm2, and the tensile strength is 400N/mm 2.
The cement concrete and the modified polypropylene fiber are two independent phase materials with different properties, the physical and mechanical properties are greatly different, the volume weight of polypropylene is about 0.375 times that of the concrete, the elastic modulus is about 0.05-0.15 times, and the tensile strength is about 100 times. The combination mode of the two-phase interface is an extremely important link for fully playing the comprehensive performance of the fiber cement concrete.
The method for manufacturing organic crude fiber by using the prior art is to select polypropylene granules, melt the granules by using a melting method, extrude the granules into filaments through a capillary hole by an extruder, endow the fibers with desired mechanical properties by multiple times of high-power drawing, generate special shapes on the cross section or the surface of the fibers by a physical method, and cut the fibers into corresponding length specifications. The mechanical properties of the concrete organic crude fiber produced by the manufacturing method cannot be very high due to the characteristics of the raw materials and the limitations of the manufacturing method.
In the prior art (publication No. CN1683616A), a reinforced modified polypropylene crude fiber for concrete and a preparation method thereof are disclosed, which can produce a fiber with a single fiber diameter more than 0.5MM, and the fiber is a polypropylene crude fiber with certain mechanical properties.
However, the mechanical properties of the organic crude fiber produced by the above method are about 500MPA and the modulus is less than 10000MPA (i.e., 10 GPA). The fiber can only play a toughening role in concrete and can not play a reinforcing role. Since the modulus of a typical concrete after complete setting is 30000MPA (i.e. 30GPA), theoretically: in order to reinforce concrete by adding fiber material, the fiber material must have a modulus of more than 30 GPA.
Therefore, there is a need for a high-strength and high-modulus coarse fiber that can simultaneously reinforce and toughen concrete, so that the concrete becomes stronger and lighter. The concrete has greater advantages for the requirements of large span, super high-rise buildings and special national defense projects.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide the high-strength high-modulus nonmetal coarse fiber and the preparation method thereof, and the coarse fiber prepared by the method has high fiber mechanical property and alkali resistance; when the material is used in concrete, the material can endow the concrete with better mechanical property, and simultaneously, the self weight of the concrete is reduced. Further, since the modified polypropylene has excellent alkali resistance, it can maintain excellent mechanical properties in strongly alkaline concrete for a long period of time.
In order to achieve the purpose, the invention provides the following technical scheme:
the high-strength high-modulus nonmetal coarse fiber for concrete comprises modified polypropylene as a base material, wherein a plurality of high-strength high-modulus nonmetal continuous fibers are axially distributed in the base material, and the base material is tightly combined with the nonmetal continuous fibers.
Preferably, the equivalent diameter is 0.20-0.65 mm, the tensile strength is more than 2000MPa, the elastic modulus is more than 50GPa, and the ultimate elongation is not more than 20%.
Preferably, the volume ratio of the base material to the nonmetal continuous fibers is 40-20%: 60 to 80 percent; the different proportion and adjustment of the components can meet different requirements of different fiber diameters, strengths and moduli in engineering.
Preferably, the modified polypropylene comprises a polypropylene material with excellent wettability and/or alkali resistance, so as to ensure that excellent mechanical properties and stability are maintained in strong alkali concrete for a long time.
Preferably, the high-strength high-modulus non-metallic continuous fibers include basalt fibers, glass fibers and high-strength high-modulus organic fibers, and specifically, carbon fibers, aramid fibers, polyethylene fibers and the like can be selected.
Preferably, the base material and the non-metallic continuous fibers are tightly bonded by a first surface treatment agent; the first surface treating agent comprises butyl acrylate or Y-aminopropyl triethoxysilane or monoalkoxy titanate or grafted maleic anhydride.
A preparation method of high-strength high-modulus nonmetal coarse fibers for concrete comprises the following steps:
1) treating the non-metallic continuous fibers with a first surface treatment agent;
2) enabling the processed bundled nonmetal continuous fibers to pass through a high-temperature cavity filled with high-viscosity melt, so that the nonmetal continuous fibers and the high-viscosity melt are tightly combined to form an intermediate;
3) and treating the intermediate by using a second surface treatment agent, cooling and cutting into a material to form the high-strength high-modulus nonmetal coarse fiber.
Preferably, the first surface treatment agent includes butyl acrylate or Y-aminopropyltriethoxysilane or monoalkoxy type titanate or grafted maleic anhydride for improving adhesion of the non-metallic continuous fiber to the high-viscosity melt.
Preferably, the second surface treatment agent comprises dodecyl dimethyl quaternary ammonium salt or polyether amide or propylene oxide or polyethylene oxide for improving the adhesion between the high-strength high-modulus nonmetallic coarse fiber and concrete.
Preferably, the high viscosity melt comprises a modified polypropylene or a modified polyamide or a modified polyester.
Compared with the prior art, the high-strength high-modulus nonmetal coarse fiber for concrete and the preparation method thereof achieve the following effects:
(1) the high-strength high-modulus nonmetal continuous fibers are added into the base material, so that the base material is reinforced, and the fiber strength and the modulus of the final high-strength high-modulus nonmetal coarse fibers are greatly improved.
(2) The different requirements of different fiber diameters, strength and modulus of engineering can be met by adjusting the proportion of the components.
(3) The modified polypropylene is used as a base material, so that the final high-strength high-modulus nonmetal coarse fiber can have very high fiber mechanical property and alkali resistance at the same time, and excellent mechanical property and stability in strong-alkaline concrete can be maintained for a long time.
(4) The reinforcing rib with the nonmetal continuous fibers as the base material enables the final coarse fibers to endow the concrete with better mechanical properties when used in the concrete, and simultaneously enables the self weight of the concrete to be reduced. The concrete material has greater advantages for the requirements of large-span and ultrahigh buildings and special national defense projects.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
In a preferred embodiment, the application discloses a high-strength high-modulus nonmetal coarse fiber for concrete, which comprises modified polypropylene as a base material, wherein a plurality of high-strength high-modulus nonmetal continuous fibers are axially distributed in the base material, and the base material is tightly combined with the nonmetal continuous fibers.
Furthermore, the equivalent diameter is 0.20-0.65 mm, the tensile strength is more than 2000MPa, the elastic modulus is more than 50GPa, and the ultimate elongation is not more than 20%.
Further, the volume ratio of the base material to the nonmetal continuous fibers is 40-20%: 60 to 80 percent; the different proportion and adjustment of the components can meet different requirements of different fiber diameters, strengths and moduli in engineering.
Further, the modified polypropylene comprises a polypropylene material with excellent wettability and alkali resistance so as to ensure that excellent mechanical properties and stability are maintained in strongly alkaline concrete for a long time, and a specific modification method is the prior art, and specific references can be made to: CN1683616A (reinforced modified polypropylene crude fiber for concrete and preparation method thereof).
Further, the high-strength high-modulus nonmetal continuous fibers comprise high-strength high-modulus organic fibers such as basalt fibers, glass fibers, carbon fibers, aramid fibers and polyethylene fibers; compared with metal fiber, the weight can be obviously reduced on the premise of ensuring the strength.
Further, the base material and the non-metallic continuous fibers are tightly bonded by a first surface treatment agent; the first surface treating agent comprises butyl acrylate or Y-aminopropyl triethoxysilane or monoalkoxy titanate or grafted maleic anhydride.
And further, a second surfactant is arranged outside the base material and comprises dodecyl dimethyl quaternary ammonium salt or polyether amide or propylene oxide or polyethylene oxide for improving the adhesive force between the high-strength high-modulus nonmetal coarse fiber and the concrete.
In another preferred embodiment, the application discloses a high-strength high-modulus nonmetal coarse fiber for concrete, which comprises modified polyamide as a base material, wherein a plurality of high-strength high-modulus nonmetal continuous fibers are axially distributed in the base material, and the base material is tightly combined with the nonmetal continuous fibers.
Furthermore, the equivalent diameter is 0.20-0.65 mm, the tensile strength is more than 2000MPa, the elastic modulus is more than 50GPa, and the ultimate elongation is not more than 20%.
Further, the volume ratio of the base material to the nonmetal continuous fibers is 40-20%: 60 to 80 percent; the different proportion and adjustment of the components can meet different requirements of different fiber diameters, strengths and moduli in engineering.
Further, the modified polyamide comprises polyamide materials with excellent wettability and alkali resistance so as to ensure that excellent mechanical properties and stability are maintained in strongly alkaline concrete for a long time, and a specific modification method is the prior art, and specific references can be made to: CN1683616A (reinforced modified polypropylene crude fiber for concrete and preparation method thereof).
Further, the high-strength high-modulus nonmetal continuous fibers comprise high-strength high-modulus organic fibers such as basalt fibers, glass fibers, carbon fibers, aramid fibers and polyethylene fibers; compared with metal fiber, the weight can be obviously reduced on the premise of ensuring the strength.
Further, the base material and the non-metallic continuous fibers are tightly bonded by a first surface treatment agent; the first surface treating agent comprises butyl acrylate or Y-aminopropyl triethoxysilane or monoalkoxy titanate or grafted maleic anhydride.
And further, a second surfactant is arranged outside the base material and comprises dodecyl dimethyl quaternary ammonium salt or polyether amide or propylene oxide or polyethylene oxide for improving the adhesive force between the high-strength high-modulus nonmetal coarse fiber and the concrete.
In another preferred embodiment, the application discloses a high-strength high-modulus nonmetal coarse fiber for concrete, which comprises modified polyester as a base material, wherein a plurality of high-strength high-modulus nonmetal continuous fibers are axially distributed in the base material, and the base material is tightly combined with the nonmetal continuous fibers.
Furthermore, the equivalent diameter is 0.20-0.65 mm, the tensile strength is more than 2000MPa, the elastic modulus is more than 50GPa, and the ultimate elongation is not more than 20%.
Further, the volume ratio of the base material to the nonmetal continuous fibers is 40-20%: 60 to 80 percent; the different proportion and adjustment of the components can meet different requirements of different fiber diameters, strengths and moduli in engineering.
Further, the modified polyester comprises a polyester material with excellent wettability and alkali resistance so as to ensure that excellent mechanical properties and stability are maintained in strongly alkaline concrete for a long time, and a specific modification method is the prior art, and specific references can be made to: CN1683616A (reinforced modified polypropylene crude fiber for concrete and preparation method thereof).
Further, the high-strength high-modulus nonmetal continuous fibers comprise high-strength high-modulus organic fibers such as basalt fibers, glass fibers, carbon fibers, aramid fibers and polyethylene fibers; compared with metal fiber, the weight can be obviously reduced on the premise of ensuring the strength.
Further, the base material and the non-metallic continuous fibers are tightly bonded by a first surface treatment agent; the first surface treating agent comprises butyl acrylate or Y-aminopropyl triethoxysilane or monoalkoxy titanate or grafted maleic anhydride.
And further, a second surfactant is arranged outside the base material and comprises dodecyl dimethyl quaternary ammonium salt or polyether amide or propylene oxide or polyethylene oxide for improving the adhesive force between the high-strength high-modulus nonmetal coarse fiber and the concrete.
In another preferred embodiment, a method for preparing high-strength high-modulus nonmetallic coarse fibers for concrete is disclosed, which comprises the following steps:
1) treating the non-metallic continuous fibers with a first surface treatment agent;
2) enabling the processed bundled nonmetal continuous fibers to pass through a high-temperature (220-340 ℃) cavity filled with high-viscosity melt, so that the nonmetal continuous fibers and the high-viscosity melt are tightly combined to form an intermediate;
3) and treating the intermediate by using a second surface treatment agent, cooling and cutting into a material to form the high-strength high-modulus nonmetal coarse fiber.
Specifically, the first surface treatment agent comprises butyl acrylate or Y-aminopropyltriethoxysilane or monoalkoxy titanate or grafted maleic anhydride for improving the adhesion of the non-metallic continuous fiber to the high-viscosity melt; the second surface treatment agent comprises dodecyl dimethyl quaternary ammonium salt or polyether amide or propylene oxide or polyethylene oxide, and is used for improving the adhesive force between the high-strength high-modulus nonmetal coarse fiber and concrete.
Further, the high-viscosity melt comprises a modified polymer material with excellent wettability and alkali resistance, such as polypropylene, polyamide or polyester, and the specific modification method is the prior art, and reference can be made specifically to: CN1683616A (reinforced modified polypropylene crude fiber for concrete and preparation method thereof).
Further, the volume ratio of the high-viscosity melt to the nonmetal continuous fibers is 40-20%: 60 to 80 percent; the different proportion and adjustment of the components can meet different requirements of different fiber diameters, strengths and moduli in engineering. Since the non-metallic continuous fiber is used to provide the strength of the final high-strength high-modulus non-metallic coarse fiber, the ratio thereof is properly increased, and the strength of the high-strength high-modulus non-metallic coarse fiber is also enhanced.
Compared with the prior art, the high-strength high-modulus nonmetal coarse fiber for concrete and the preparation method thereof achieve the following effects:
(1) the high-strength high-modulus nonmetal continuous fibers are added into the base material, so that the base material is reinforced, and the fiber strength and the modulus of the final high-strength high-modulus nonmetal coarse fibers are greatly improved. Taking steel fibers commonly used in concrete at present as an example: its strength is about 350MPA, modulus is about 200GPA and specific gravity is 7.8. The strength of the high-strength high-modulus nonmetal coarse fiber can be from 1000MPA to 5500MPA (even to 7000MPA), the modulus can be from 50GPA to 250GPA (even to 300GPA), and the specific gravity is only 1.4 to 2.7.
(2) The different requirements of different fiber diameters, strength and modulus of engineering can be met by adjusting the proportion of the components.
(3) And polymer materials such as modified polypropylene and the like are used as base materials, so that the final high-strength high-modulus nonmetal coarse fiber can have high fiber mechanical property and alkali resistance at the same time, and excellent mechanical property and stability in strong-alkaline concrete can be maintained for a long time.
(4) The reinforcing rib with the nonmetal continuous fibers as the base material enables the final coarse fibers to endow the concrete with better mechanical properties when used in the concrete, and simultaneously enables the self weight of the concrete to be reduced. The concrete material has greater advantages for the requirements of large-span and ultrahigh buildings and special national defense projects.
(5) And the combination between the base material and the nonmetal continuous fiber and between the base material and the concrete is firmer by adding the first surface treatment agent and the second surface treatment agent.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (10)
1. The high-strength high-modulus nonmetal coarse fiber for concrete comprises modified polypropylene as a base material, and is characterized in that a plurality of high-strength high-modulus nonmetal continuous fibers are axially distributed in the base material, and the base material is tightly combined with the nonmetal continuous fibers.
2. The high-strength high-modulus nonmetal coarse fiber for concrete according to claim 1, characterized in that the equivalent diameter is 0.20-0.65 mm, the tensile strength is more than 2000MPa, the elastic modulus is more than 50GPa, and the ultimate elongation is not more than 20%.
3. The high-strength high-modulus nonmetal coarse fiber for concrete according to claim 2, wherein the volume ratio of the base material to the nonmetal continuous fiber is 40-20%: 60 to 80 percent.
4. The high-strength high-modulus nonmetallic coarse fiber for concrete according to claim 2, wherein the modified polypropylene comprises a polypropylene material with excellent wettability and/or alkali resistance.
5. The high-strength high-modulus non-metallic coarse fiber for concrete according to claim 2, wherein the high-strength high-modulus non-metallic continuous fiber comprises basalt fiber, glass fiber and high-strength high-modulus organic fiber.
6. The high-strength high-modulus non-metallic coarse fiber for concrete according to claim 2, wherein the base material and the non-metallic continuous fiber are tightly combined by a first surface treatment agent; the first surface treating agent comprises butyl acrylate or Y-aminopropyl triethoxysilane or monoalkoxy titanate or grafted maleic anhydride.
7. The method for preparing the high-strength high-modulus nonmetallic coarse fibers for concrete according to claim 1, comprising the steps of:
1) treating the non-metallic continuous fibers with a first surface treatment agent;
2) enabling the processed bundled nonmetal continuous fibers to pass through a high-temperature cavity filled with high-viscosity melt, so that the nonmetal continuous fibers and the high-viscosity melt are tightly combined to form an intermediate;
3) and treating the intermediate by using a second surface treatment agent, cooling and cutting into a material to form the high-strength high-modulus nonmetal coarse fiber.
8. The method for preparing high-strength high-modulus non-metallic crude fiber for concrete according to claim 7, wherein the first surface treatment agent comprises butyl acrylate or Y-aminopropyl triethoxysilane or monoalkoxy titanate or grafted maleic anhydride for improving the adhesion of the non-metallic continuous fiber to the high-viscosity melt.
9. The method for preparing high-strength high-modulus non-metallic crude fiber for concrete according to claim 7, wherein the second surface treatment agent comprises dodecyl dimethyl quaternary ammonium salt or polyether amide or propylene oxide or polyethylene oxide for improving the adhesion between the high-strength high-modulus non-metallic crude fiber and the concrete.
10. A method for preparing high-strength high-modulus non-metallic crude fiber for concrete according to claim 7, wherein the high-viscosity melt comprises modified polypropylene or modified polyamide or modified polyester.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010572465.XA CN111809267A (en) | 2020-06-22 | 2020-06-22 | High-strength high-modulus nonmetal coarse fiber for concrete and preparation method thereof |
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| CN202010572465.XA CN111809267A (en) | 2020-06-22 | 2020-06-22 | High-strength high-modulus nonmetal coarse fiber for concrete and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354351A (en) * | 2021-07-16 | 2021-09-07 | 广州市粤晟混凝土有限公司 | Anti-permeability and anti-crack concrete and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6071613A (en) * | 1998-11-03 | 2000-06-06 | W. R. Grace & Co.-Conn. | Fiber reinforced cementitious materials with improved toughness and ductility |
| CN103289194A (en) * | 2013-05-22 | 2013-09-11 | 江苏金发科技新材料有限公司 | Basalt continuous fiber reinforced polypropylene material and preparation method thereof |
| CN105776922A (en) * | 2016-04-15 | 2016-07-20 | 殷石 | Hybrid fiber reinforced concrete |
-
2020
- 2020-06-22 CN CN202010572465.XA patent/CN111809267A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6071613A (en) * | 1998-11-03 | 2000-06-06 | W. R. Grace & Co.-Conn. | Fiber reinforced cementitious materials with improved toughness and ductility |
| CN103289194A (en) * | 2013-05-22 | 2013-09-11 | 江苏金发科技新材料有限公司 | Basalt continuous fiber reinforced polypropylene material and preparation method thereof |
| CN105776922A (en) * | 2016-04-15 | 2016-07-20 | 殷石 | Hybrid fiber reinforced concrete |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354351A (en) * | 2021-07-16 | 2021-09-07 | 广州市粤晟混凝土有限公司 | Anti-permeability and anti-crack concrete and preparation method thereof |
| CN113354351B (en) * | 2021-07-16 | 2022-07-05 | 广州市粤晟混凝土有限公司 | Anti-permeability and anti-crack concrete and preparation method thereof |
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Application publication date: 20201023 |
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| RJ01 | Rejection of invention patent application after publication |