CN116144142B - Epoxy resin-anhydride curing agent for composite material pultrusion and preparation method thereof - Google Patents
Epoxy resin-anhydride curing agent for composite material pultrusion and preparation method thereof Download PDFInfo
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- CN116144142B CN116144142B CN202211729698.1A CN202211729698A CN116144142B CN 116144142 B CN116144142 B CN 116144142B CN 202211729698 A CN202211729698 A CN 202211729698A CN 116144142 B CN116144142 B CN 116144142B
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- anhydride
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000004593 Epoxy Substances 0.000 title description 19
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 23
- 239000003085 diluting agent Substances 0.000 claims abstract description 19
- 239000012745 toughening agent Substances 0.000 claims abstract description 11
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 20
- MWSKJDNQKGCKPA-UHFFFAOYSA-N 6-methyl-3a,4,5,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1CC(C)=CC2C(=O)OC(=O)C12 MWSKJDNQKGCKPA-UHFFFAOYSA-N 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 8
- 238000009736 wetting Methods 0.000 claims description 8
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 claims description 7
- 239000013530 defoamer Substances 0.000 claims description 6
- 239000006082 mold release agent Substances 0.000 claims description 6
- LTVUCOSIZFEASK-MPXCPUAZSA-N (3ar,4s,7r,7as)-3a-methyl-3a,4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione Chemical compound C([C@H]1C=C2)[C@H]2[C@H]2[C@]1(C)C(=O)OC2=O LTVUCOSIZFEASK-MPXCPUAZSA-N 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000002383 tung oil Substances 0.000 claims description 4
- ITZGNPZZAICLKA-UHFFFAOYSA-N bis(oxiran-2-ylmethyl) 7-oxabicyclo[4.1.0]heptane-3,4-dicarboxylate Chemical compound C1C2OC2CC(C(=O)OCC2OC2)C1C(=O)OCC1CO1 ITZGNPZZAICLKA-UHFFFAOYSA-N 0.000 claims description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 3
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 3
- ULKLGIFJWFIQFF-UHFFFAOYSA-N 5K8XI641G3 Chemical compound CCC1=NC=C(C)N1 ULKLGIFJWFIQFF-UHFFFAOYSA-N 0.000 claims description 2
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000005457 optimization Methods 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims 1
- 230000004075 alteration Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011353 cycloaliphatic epoxy resin Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
- C08G59/4207—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
- C08G59/4215—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof cycloaliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
- C08G59/4223—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof aromatic
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
Abstract
The invention discloses an epoxy resin system for composite material pultrusion and a preparation method thereof, and relates to the technical field of epoxy resin systems. The epoxy resin system is formed by mixing an A component consisting of epoxy resin, a diluent and a functional auxiliary agent with a B component consisting of anhydride, a toughening agent and an accelerator. The curing agent system can avoid the phenomenon of chromatic aberration of the composite material after high-temperature curing.
Description
Technical Field
The invention belongs to the technical field of epoxy resin curing agents, and particularly relates to an epoxy resin-organic anhydride curing system for composite material pultrusion and a preparation method thereof.
Background
When the polymer composite material is subjected to pultrusion, an epoxy resin-organic anhydride curing system is required to be added, and after high-temperature curing, the composite material is easy to change color, so that the color difference problem is caused.
Therefore, the existing epoxy resin-organic anhydride curing system is adjusted to avoid color difference of the composite material after curing and pultrusion
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an epoxy resin system for pultrusion of a composite material, which comprises an epoxy resin-organic anhydride curing agent and a preparation method thereof. The epoxy resin-organic anhydride curing system can avoid the phenomenon of chromatic aberration of the composite material after high-temperature curing.
The invention is realized by adopting the following technical scheme:
an epoxy resin-organic anhydride curing agent for pultrusion of composite materials is composed of a component A and a component B according to the mass ratio of 100:100-120;
the component A consists of the following raw materials in parts by mass:
80-100 parts of epoxy resin, 0-20 parts of diluent and 1-5 parts of functional auxiliary agent; the functional auxiliary agent is formed by mixing a wetting dispersant, a defoaming agent or an internal release agent;
the component B consists of the following raw materials in parts by mass:
70-90 parts of organic anhydride curing agent, 8-15 parts of toughening agent and 0.5-2.0 parts of accelerator.
Preferably, the epoxy resin is composed of epoxy resin I and epoxy resin II according to the mass ratio of 30:5-12, wherein the epoxy resin I is epoxy resin E-51; the epoxy resin II is one of epoxy resin TDE-85, epoxy resin AFG-90 and hydrogenated bisphenol A epoxy resin.
Preferably, the diluent is at least one of diluent AGE, diluent PGE and diluent BGE. The diluent is purchased from Anhui Xinyun corporation, the AGE brand is XY-748, the PGE brand is XY-693, and the BGE brand is XY-622.
Preferably, the brand of the wetting dispersant is BYK-W980 or BYK-W985; the brand of the defoamer is BYK-530; the brand of the internal mold release agent is INT-1890M.
Preferably, the anhydride is at least one of methyl tetrahydrophthalic anhydride, tung oil anhydride and methyl nadic anhydride.
Preferably, the toughening agent is optimization chemistry HIEFTO-TQ2.
Preferably, the accelerator is at least one of 2-methylimidazole and 2-ethyl-4-methylimidazole.
The invention also provides a preparation method of the epoxy resin-anhydride curing agent for the pultrusion of the composite material, which comprises the following steps:
(1) Preparing a component A:
adding the weighed epoxy resin, the diluent and the functional auxiliary agent into a reaction bottle, and uniformly stirring at the temperature of 50-60 ℃ to obtain a component A;
(2) And (3) preparing a component B:
adding the weighed anhydride and the toughening agent into a reaction bottle, uniformly stirring at the temperature of 30-50 ℃, adding the weighed accelerator, and continuously stirring until the materials are uniform to obtain a component B;
(3) Mixing
And uniformly mixing the prepared component A and component B in proportion.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an epoxy resin-organic anhydride curing agent, which consists of a component A and a component B, wherein the component A is formed by mixing epoxy resin, a diluent and a functional auxiliary agent, and the component B is formed by mixing anhydride, a toughening agent and a promoter. The curing agent is used for curing, so that the color difference of the polymer composite material can not be generated.
Drawings
FIG. 1 is a pultruded composite panel for a wind turbine blade spar processed from the curing agent prepared in example 1;
FIG. 2 is a pultruded composite panel for a wind turbine blade spar processed from the curing agent prepared in example 2;
FIG. 3 is a pultruded composite panel for a wind turbine blade spar processed from the curing agent prepared in example 3;
fig. 4 is a pultruded composite panel for a wind power blade girder processed by using the curing agent prepared in comparative example 1.
Detailed Description
The following detailed description of the present invention provides for a more complete understanding of the objects, features and advantages of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
An epoxy resin-organic anhydride curing agent for composite material pultrusion, the preparation method is as follows:
(1) Preparing a component A: heating the reaction bottle to 55 ℃, starting stirring (the stirring rotating speed is 50 r/min), adding epoxy resin E-51 300g, trifunctional cycloaliphatic epoxy resin TDE-85 61g, diluent AGE 3g, wetting dispersant BYK-W980 5g, defoamer BYK-530 g and internal mold release agent INT-1890M 5g into the reaction bottle, after all materials are added, lifting the stirring speed to 100r/min, and stirring for 30min until the materials are uniform, thus obtaining the component A for standby.
(2) And (3) preparing a component B: adding 300g of methyl tetrahydrophthalic anhydride (MeTHPA), 100g of Tung Oil Anhydride (TOA) and 2g of toughener HIEFTO-TQ2 into a reaction bottle with the temperature of 40 ℃, slowly and uniformly stirring, adding 4.5g of 2-methylimidazole (2-MZ), after all materials are added, lifting the stirring rotating speed to 80r/min, and stirring for 30min until the materials are uniform, thus obtaining a component B;
(3) And uniformly mixing the component A and the component B according to the weight ratio of 100:110 to obtain the epoxy resin-anhydride curing agent.
Example 2
An epoxy resin-organic anhydride curing agent for composite material pultrusion, the preparation method is as follows:
(1) Preparing a component A: heating the reaction bottle to 55 ℃, starting stirring (the stirring rotation speed is 50 r/min), adding epoxy resin E-51 300g, trifunctional cycloaliphatic epoxy resin AFG-90 58g, diluent PGE 3g, wetting dispersant BYK-W980 5g, defoamer BYK-530 g and internal mold release agent INT-1890M 5g into the reaction bottle, after all materials are added, lifting the stirring speed to 100r/min, and stirring for 30min until the materials are uniform, thus obtaining the component A for standby.
(2) And (3) preparing a component B: 300g of methyl tetrahydrophthalic anhydride (MeTHPA), 42g of Tung Oil Anhydride (TOA) and 50g of Methyl Nadic Anhydride (MNA) are added into a reaction bottle with the temperature of 40 ℃ and slowly stirred uniformly, then 4.5g of 2-methylimidazole (2-MZ) is added, after all materials are added, the stirring speed is increased to 80r/min, and the stirring is carried out for 30min until the materials are uniform, thus obtaining the component B;
(3) And uniformly mixing the component A and the component B according to the weight ratio of 100:110 to obtain the epoxy resin-anhydride curing agent.
Example 3
An epoxy resin-organic anhydride curing agent for composite material pultrusion, the preparation method is as follows:
(1) Preparing a component A: heating the reaction bottle to 55 ℃, starting stirring (the stirring rotation speed is 50 r/min), adding epoxy resin E-51 300g, hydrogenated bisphenol A epoxy resin 120g, diluent BGE 3g, wetting dispersant BYK-W985 g, defoamer BYK-530 g and internal mold release agent INT-1890M 5g into the reaction bottle, after all materials are added, lifting the stirring speed to 100r/min, stirring for 30min until the materials are uniform, and obtaining the component A for standby.
(2) And (3) preparing a component B: 410g of methyltetrahydrophthalic anhydride (MeTHPA) and 215g of toughener HIEFTO-TQ are added into a reaction bottle with the temperature of 40 ℃, after being slowly and uniformly stirred, 5g of 2-methylimidazole (2-MZ) is added, after all materials are added, the stirring speed is increased to 80r/min, and the materials are stirred for 30min until the materials are uniform, so that a component B is obtained;
(3) And uniformly mixing the component A and the component B according to the weight ratio of 100:100 to obtain the epoxy resin-anhydride curing agent.
Comparative example 1
An epoxy resin-organic anhydride curing agent for composite material pultrusion, the preparation method is as follows:
(1) Preparing a component A: heating the reaction bottle to 55 ℃, starting stirring (the stirring rotation speed is 50 r/min), adding 400g of epoxy resin E-51, 3g of diluent AGE, 5g of wetting dispersant BYK-W980, 530 g of defoamer BYK-530 g and 5g of internal mold release agent 1890M into the reaction bottle, after all materials are added, lifting the stirring speed to 100r/min, and stirring for 30min until the materials are uniform, thus obtaining a component A;
(2) And (3) preparing a component B: heating the reaction bottle to 40 ℃, slowly starting stirring, adding 400g of methyl tetrahydrophthalic anhydride (MeTHPA) and 14 g of a toughening agent HIEFTO-T into the reaction bottle, adding 5g of 2-methylimidazole (2 MZ) after the materials are uniformly mixed, and after all the materials are added, lifting the stirring rotating speed to 80r/min and stirring for 30min until the materials are uniform, thus obtaining a component B;
(3) And mixing the component A and the component B according to the weight ratio of 100:100 to obtain the epoxy resin-anhydride curing agent.
The epoxy resin-organic acid anhydride curing agent prepared in examples 1-3 and comparative example 1 was used to prepare pultruded composite boards for wind power blade girders.
The specific using method is as follows:
uniformly mixing the epoxy resin and the organic anhydride curing agent prepared in the example, adding the mixture into a glue tank, immersing glass fiber or carbon fiber yarns in the glue tank, and then entering a die for curing and molding, wherein the die temperature is generally three-stage heating, the heating temperature is respectively 150-170 ℃, 170-190 ℃, 180-200 ℃, and the pultrusion speed is 0.2-1.2m/min. After heating by a high temperature die, the obtained composite plate is subjected to color comparison and mechanical property comparison, as shown in table 1 and fig. 1-4.
TABLE 1
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (2)
1. An epoxy resin system for pultrusion of composite materials is characterized by comprising a component A and a component B according to the mass ratio of 100:100-120;
the component A consists of the following raw materials in parts by mass:
80-100 parts of epoxy resin, 0-20 parts of diluent and 1-5 parts of functional auxiliary agent; the functional auxiliary agent is formed by mixing a wetting dispersant, a defoaming agent or an internal release agent;
the component B consists of the following raw materials in parts by mass:
70-90 parts of organic anhydride curing agent, 8-15 parts of toughening agent and 0.5-2.0 parts of accelerator;
the epoxy resin consists of epoxy resin I and epoxy resin II according to the mass ratio of 30:5-12, wherein the epoxy resin I is epoxy resin E-51; the epoxy resin II is one of epoxy resin TDE-85, epoxy resin AFG-90 and hydrogenated bisphenol A epoxy resin;
the diluent is at least one of diluent AGE, diluent PGE and diluent BGE;
the brand of the wetting dispersant is BYK-W980 or BYK-W985;
the brand of the defoamer is BYK-530;
the brand INT-1890M of the internal mold release agent;
the organic acid anhydride is at least one of methyl tetrahydrophthalic anhydride, tung oil anhydride and methyl nadic anhydride;
the toughening agent is optimization chemistry HIEFTO-TQ2;
the promoter is at least one of 2-methylimidazole and 2-ethyl-4-methylimidazole.
2. The method for preparing an epoxy resin system for pultrusion of composite materials according to claim 1, characterized by comprising the following steps:
(1) Preparing a component A:
adding the weighed epoxy resin, the diluent and the functional auxiliary agent into a reaction bottle, and uniformly stirring at the temperature of 50-60 ℃ to obtain a component A;
(2) And (3) preparing a component B:
adding the weighed anhydride and the toughening agent into a reaction bottle, uniformly stirring at the temperature of 30-50 ℃, adding the weighed accelerator, and continuously stirring until the materials are uniform to obtain a component B;
(3) Mixing
And uniformly mixing the prepared component A and component B in proportion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211729698.1A CN116144142B (en) | 2022-12-30 | 2022-12-30 | Epoxy resin-anhydride curing agent for composite material pultrusion and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211729698.1A CN116144142B (en) | 2022-12-30 | 2022-12-30 | Epoxy resin-anhydride curing agent for composite material pultrusion and preparation method thereof |
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| CN116144142A CN116144142A (en) | 2023-05-23 |
| CN116144142B true CN116144142B (en) | 2024-01-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105949719A (en) * | 2016-05-13 | 2016-09-21 | 河南省科学院化学研究所有限公司 | Environment-friendly epoxy resin based composite board |
| CN112300537A (en) * | 2020-11-10 | 2021-02-02 | 山东非金属材料研究所 | Epoxy resin matrix composition and preparation method thereof |
| CN113637290A (en) * | 2021-08-03 | 2021-11-12 | 安徽众博新材料有限公司 | Epoxy resin-based composite material with high glass transition temperature and capable of being rapidly molded for wind power pultrusion girder and preparation method of epoxy resin-based composite material |
| CN114292496A (en) * | 2021-11-26 | 2022-04-08 | 山东奥卓新材料有限公司 | Transparent epoxy resin matrix for pultrusion and preparation method thereof |
| WO2022095286A1 (en) * | 2020-11-03 | 2022-05-12 | 南京大学 | Epoxy resin-based polymer material, preparation method therefor and use thereof |
| CN114907548A (en) * | 2022-05-16 | 2022-08-16 | 南京海拓复合材料有限责任公司 | Epoxy resin batch for pultrusion of composite material and preparation method thereof |
-
2022
- 2022-12-30 CN CN202211729698.1A patent/CN116144142B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105949719A (en) * | 2016-05-13 | 2016-09-21 | 河南省科学院化学研究所有限公司 | Environment-friendly epoxy resin based composite board |
| WO2022095286A1 (en) * | 2020-11-03 | 2022-05-12 | 南京大学 | Epoxy resin-based polymer material, preparation method therefor and use thereof |
| CN112300537A (en) * | 2020-11-10 | 2021-02-02 | 山东非金属材料研究所 | Epoxy resin matrix composition and preparation method thereof |
| CN113637290A (en) * | 2021-08-03 | 2021-11-12 | 安徽众博新材料有限公司 | Epoxy resin-based composite material with high glass transition temperature and capable of being rapidly molded for wind power pultrusion girder and preparation method of epoxy resin-based composite material |
| CN114292496A (en) * | 2021-11-26 | 2022-04-08 | 山东奥卓新材料有限公司 | Transparent epoxy resin matrix for pultrusion and preparation method thereof |
| CN114907548A (en) * | 2022-05-16 | 2022-08-16 | 南京海拓复合材料有限责任公司 | Epoxy resin batch for pultrusion of composite material and preparation method thereof |
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