CN115625949A - Alkali-resistant glass fiber reinforced composite material rib - Google Patents
Alkali-resistant glass fiber reinforced composite material rib Download PDFInfo
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- CN115625949A CN115625949A CN202211348941.5A CN202211348941A CN115625949A CN 115625949 A CN115625949 A CN 115625949A CN 202211348941 A CN202211348941 A CN 202211348941A CN 115625949 A CN115625949 A CN 115625949A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/26—Layered products comprising a layer of synthetic resin characterised by the use of special additives using curing agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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Abstract
The invention discloses an alkali-resistant glass fiber reinforced composite (AR-GFRP) rib, which comprises: a core and a cladding; the core comprises the following components in percentage by weight: 70-85% of glass fiber, 12-28% of resin and 2-8% of additive; the coating part comprises the following components in percentage by weight: 70-85% of alkali-resistant glass fiber, 12-28% of resin and 2-8% of additive. The alkali-resistant glass fiber reinforced composite material rib has strong corrosion resistance and small weakening phenomenon generated by soaking in seawater, and can improve the life cycle of an engineering structure.
Description
Technical Field
The invention relates to the technical field of fiber reinforced composite materials, in particular to an alkali-resistant glass fiber reinforced composite (AR-GFRP) rib which can be used in wading concrete reinforcing engineering structures and is mainly used in water conservancy/ocean engineering.
Background
The durability of the existing glass fiber reinforced composite material rib in wading engineering application has a certain problem, which is mainly reflected in the weakening phenomenon caused by continuous soaking of glass fiber in seawater, and the life cycle of an engineering structure is greatly reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an alkali-resistant glass fiber reinforced composite rib.
The invention discloses an alkali-resistant glass fiber reinforced composite rib, which comprises: a core and a cladding;
the core comprises the following components in percentage by weight: 70-85% of glass fiber, 12-28% of resin and 2-8% of additive;
the coating part comprises the following components in percentage by weight: 70-85% of alkali-resistant glass fiber, 12-28% of resin and 2-8% of additive.
As a further improvement of the present invention,
the glass fiber used in the composition of the core is alkali-resistant glass fiber or conventional glass fiber.
As a further improvement of the present invention,
the resin includes, but is not limited to, one or more of epoxy resin, vinyl resin and unsaturated resin.
As a further improvement of the present invention,
the additives include, but are not limited to, anti-aging agents, anti-freezing agents, and curing agents.
As a further improvement of the present invention,
2-8% of the additive comprises 0.5-2% of age resister, 0-2% of antifreeze and 1.5-4% of curing agent according to weight percentage.
As a further improvement of the present invention,
the outer surface of the cladding part is a threaded surface, a sand layer surface or a smooth surface.
As a further improvement of the present invention,
the thickness of the cladding part is more than 4-6mm.
As a further improvement of the present invention,
the core part and the cladding part are both prepared by curing.
Compared with the prior art, the invention has the beneficial effects that:
the alkali-resistant glass fiber reinforced composite material rib has strong corrosion resistance and small weakening phenomenon generated by soaking in seawater, and can improve the life cycle of an engineering structure; meanwhile, tests show that compared with the existing glass fiber reinforced composite material rib, the residual tensile strength of the alkali-resistant glass fiber reinforced composite material rib immersed in seawater can be improved by more than 20%.
Drawings
Fig. 1 is a schematic structural diagram of an alkali-resistant glass fiber reinforced composite rib according to an embodiment of the present invention.
In the figure:
1. a core; 2. and a coating part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the present invention provides an alkali-resistant glass fiber reinforced composite bar, comprising: a core 1 and a covering 2; specifically, the method comprises the following steps:
the core part 1 comprises the following components in percentage by weight: 70-85% of glass fiber, 12-28% of resin and 2-8% of additive; wherein the content of the first and second substances,
the resin includes, but is not limited to, one or more of epoxy resin, vinyl resin, and unsaturated resin.
The additives include but are not limited to age resister, antifreeze and curing agent, and 2-8% of the additives comprise 0.5-2% of age resister, 0-2% of antifreeze and 1.5-4% of curing agent by weight percent.
The cladding part 2 comprises the following components in percentage by weight: 70-85% of alkali-resistant glass fiber, 12-28% of resin and 2-8% of additive; wherein, the first and the second end of the pipe are connected with each other,
the resin includes, but is not limited to, one or a mixture of epoxy resin, vinyl resin and unsaturated resin.
The additives include but are not limited to an anti-aging agent, an antifreezing agent and a curing agent, and 2-8% of the additives comprise 0.5-2% of the anti-aging agent, 0-2% of the antifreezing agent and 1.5-4% of the curing agent in percentage by weight;
the outer surface of the cladding part is a threaded surface, a sand layer surface or a smooth surface, the thickness of the cladding part is more than 4-6mm, and the cladding part with the thickness can achieve the purpose of alkali resistance enhancement.
Example 1:
an alkali-resistant glass fibre reinforced composite bar, 20mm in diameter, comprising: a core and a cladding;
the core has a thickness of 4mm and comprises, in weight percent: 85% of glass fiber, 13% of resin, 0.5% of anti-aging agent, 0% of antifreezing agent and 1.5% of curing agent;
the thickness of the cladding part is 6mm, and the composition comprises the following components in percentage by weight: 85% of alkali-resistant glass fiber, 13% of resin, 0.5% of anti-aging agent, 0% of antifreezing agent and 1.5% of curing agent.
Example 2:
the thickness of the coating was changed to 6mm in the same manner as in example 1 except that the conditions were not changed.
Example 3:
an alkali-resistant fiberglass reinforced composite rebar comprising: a core and a cladding;
the thickness of the core is 4mm, and the composition comprises, in weight percent: 70% of glass fiber, 28% of resin, 0.5% of anti-aging agent, 0% of antifreezing agent and 1.5% of curing agent;
the thickness of the cladding part is 6mm, and the composition comprises the following components in percentage by weight: 70 percent of alkali-resistant glass fiber, 28 percent of resin, 0.5 percent of anti-aging agent, 0 percent of antifreezing agent and 1.5 percent of curing agent.
Example 4:
the thickness of the coating was changed to 6mm in the same manner as in example 2, but the other conditions were not changed.
Comparative example 1:
the thickness of the coating was changed to 2mm in the same manner as in example 1, but the other conditions were not changed.
Comparative example 2:
the thickness of the coating was changed to 2mm in the same manner as in example 2, but the other conditions were not changed.
Comparative example 3:
the other conditions were the same as in example 1 except that the coating portion was not provided.
The experimental conditions are as follows:
the products of examples and comparative examples were directly immersed in an alkaline solution at 40 c, pH 13, and tested for tensile strength and shear strength at 120 days and 240 days of immersion.
The results of the experiment are shown in table 1.
TABLE 1
| Tensile strength (120 d) | Tensile strength (240 d) | Shear strength (120 d) | Shear strength (240 d) | |
| Example 1 | 1209.8 | 1137.2 | 198.5 | 190.3 |
| Example 2 | 1210.2 | 1142.3 | 199.0 | 189.9 |
| Example 3 | 1005.2 | 944.9 | 202.2 | 196.2 |
| Comparative example 4 | 1010.3 | 952.2 | 202.4 | 198.3 |
| Comparative example 1 | 1028.3 | 894.5 | 175.6 | 166.8 |
| Comparative example 2 | 960.5 | 816.4 | 182.6 | 172.3 |
| Comparative example 3 | 846.9 | 796.1 | 165.2 | 155.9 |
And (4) conclusion:
based on the comparison of examples 1, 2 with comparative example 1, it can be seen that the lower the clad layer, the lower the retained tensile strength and the layer shear strength;
based on the comparison of examples 3, 4 with comparative example 2, it can be seen that the lower the coating layer, the lower the retained tensile strength and the lower the layer shear strength;
based on the comparison between example 1 and comparative example 3, it can be seen that the non-coated reinforcement is most affected by the alkaline environment, and the tensile strength and the layer shear strength are greatly reduced.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An alkali-resistant glass fiber reinforced composite rib, comprising: a core and a cladding;
the core comprises the following components in percentage by weight: 70-85% of glass fiber, 12-28% of resin and 2-8% of additive;
the coating part comprises the following components in percentage by weight: 70-85% of alkali-resistant glass fiber, 12-28% of resin and 2-8% of additive.
2. The alkali-resistant glass fiber reinforced composite reinforcement of claim 1,
the glass fibers used in the composition of the core are alkali-resistant glass fibers or conventional glass fibers.
3. Alkali-resistant glass-fibre-reinforced composite reinforcement according to claim 1,
the resin includes, but is not limited to, one or a mixture of epoxy resin, vinyl resin and unsaturated resin.
4. The alkali-resistant glass fiber reinforced composite reinforcement of claim 1,
the additives include, but are not limited to, age resistors, antifreeze and curing agents.
5. Alkali-resistant glass-fibre-reinforced composite reinforcement according to claim 4,
2-8% of additive comprises 0.5-2% of age resister, 0-2% of antifreezing agent and 1.5-4% of curing agent.
6. Alkali-resistant glass-fibre-reinforced composite reinforcement according to claim 1,
the outer surface of the cladding part is a threaded surface, a sand layer surface or a smooth surface.
7. Alkali-resistant glass-fibre-reinforced composite reinforcement according to claim 1,
the thickness of the cladding part is more than 4-6mm.
8. Alkali-resistant glass-fibre-reinforced composite reinforcement according to claim 1,
the core part and the cladding part are both prepared by curing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211348941.5A CN115625949A (en) | 2022-10-31 | 2022-10-31 | Alkali-resistant glass fiber reinforced composite material rib |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211348941.5A CN115625949A (en) | 2022-10-31 | 2022-10-31 | Alkali-resistant glass fiber reinforced composite material rib |
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| CN115625949A true CN115625949A (en) | 2023-01-20 |
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| CN202211348941.5A Pending CN115625949A (en) | 2022-10-31 | 2022-10-31 | Alkali-resistant glass fiber reinforced composite material rib |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745944A (en) * | 2012-06-05 | 2012-10-24 | 河海大学 | Steel fiber reinforced glass fiber resin composite bar material and preparation method |
| CN104060536A (en) * | 2014-06-06 | 2014-09-24 | 四川航天五源复合材料有限公司 | Basalt fiber composite reinforcement |
| CN104725780A (en) * | 2015-02-28 | 2015-06-24 | 河海大学 | Hybrid basalt fiber and glass fiber reinforced resin |
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2022
- 2022-10-31 CN CN202211348941.5A patent/CN115625949A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745944A (en) * | 2012-06-05 | 2012-10-24 | 河海大学 | Steel fiber reinforced glass fiber resin composite bar material and preparation method |
| CN104060536A (en) * | 2014-06-06 | 2014-09-24 | 四川航天五源复合材料有限公司 | Basalt fiber composite reinforcement |
| CN104725780A (en) * | 2015-02-28 | 2015-06-24 | 河海大学 | Hybrid basalt fiber and glass fiber reinforced resin |
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