Degradable epoxy resin material and degradation method thereof

Abstract

The invention provides a degradable epoxy resin material and a degradation method thereof, and belongs to the technical field of epoxy resin materials. By introducing the ester exchange catalyst and the amine solution, rapid degradation of the epoxy resin material is successfully realized, and a new solution is provided for development of an environment-friendly resin-based fiber reinforced composite material. The technology is particularly suitable for application of composite materials, and efficient environment-friendly treatment can be achieved after the service life of the composite materials is over.

Description

Technical Field

[0001] The invention relates to the technical field of epoxy resin materials, and in particular to a degradable epoxy resin material and a degradation method thereof. Background Art

[0002] Traditional epoxy resins are widely used in composite materials, electronic packaging materials, electrical insulation materials, coatings, adhesives and other product fields, especially in resin-based fiber-reinforced composite materials, and are favored for their excellent mechanical properties, corrosion resistance and electrical properties. However, the three-dimensional cross-linked structure of traditional epoxy resins makes them difficult to degrade after the end of their service life, which creates an environmental burden. Existing degradation methods are inefficient and complex, making them difficult to be widely used. Therefore, the development of an epoxy resin material that is easy to degrade and environmentally friendly has become an urgent problem to be solved. Summary of the invention

[0003] The purpose of the present invention is to provide a degradable epoxy resin material and a degradation method thereof, so as to solve the technical problems of the existing epoxy resin material having a complex degradation process and a low degradation rate.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0005] The present invention provides a degradable epoxy resin material, comprising epoxy resin, a curing agent and an ester exchange catalyst;

[0006] The mass ratio of the epoxy resin, the curing agent and the transesterification catalyst is 50-90:50-90:0.5-5;

[0007] The transesterification catalyst comprises one or more of an organic titanium compound, a metal alkoxide and an organic tin compound.

[0008] Further, the organic titanium compound comprises tetrabutyl titanate and / or isopropyl titanate;

[0009] The metal alkoxide comprises one or more of zinc acetate, lithium alkoxide and aluminum alkoxide;

[0010] The organotin compound comprises dibutyltin dilaurate.

[0011] Furthermore, the epoxy resin includes glycidyl ether epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, alicyclic epoxy resin, polyether epoxy resin, polyester epoxy resin, heterocyclic or special structure epoxy resin.

[0012] Further, the glycidyl ether epoxy resin comprises one or more of bisphenol A epoxy resin, bisphenol F epoxy resin, bisphenol S epoxy resin, phenol formaldehyde epoxy resin, o-cresol epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol AD ​​epoxy resin, hydroxymethyl bisphenol A epoxy resin, brominated epoxy resin and phosphorus-containing epoxy resin;

[0013] The glycidyl ester epoxy resin comprises one or more of diglycidyl phthalate, diglycidyl isophthalate, diglycidyl terephthalate, diglycidyl tetrahydrophthalate, diglycidyl hexahydrophthalate, diglycidyl cyclohexane-1,2-dicarboxylate, diglycidyl 1,2-epoxycyclohexane 4,5-dicarboxylate, polyester glycidyl ester and modified glycidyl ester;

[0014] The glycidylamine epoxy resin comprises one or more of a difunctional amino epoxy resin, a trifunctional amino epoxy resin and a tetrafunctional amino epoxy resin;

[0015] The alicyclic epoxy resin comprises one or more of 3,4-epoxycyclohexylcarboxylic acid-3',4'-epoxycyclohexylmethyl ester, bis((3,4-epoxycyclohexyl)methyl)adipate, poly[(2-oxiranyl)-1,2-cyclohexanediol]2-ethyl-2-(hydroxymethyl)-1,3-propylene glycol ether, 1,2-epoxy-4-vinylcyclohexane, vinylcyclohexene dioxide, epoxidized tetrahydrofuran and epoxidized cyclopentene;

[0016] The heterocyclic or special structure epoxy resin includes one or more of polyethersulfoneketone epoxy resin, liquid crystal epoxy resin, polysiloxane copolymer modified epoxy resin, dicyclopentadiene epoxy resin, furan epoxy resin, thiophene epoxy resin, naphthalene epoxy resin, biphenyl epoxy resin and hydantoin epoxy resin.

[0017] Furthermore, the curing agent comprises one or more of an amine curing agent, an acid anhydride curing agent, an imidazole curing agent and a phenolic resin.

[0018] The present invention also provides a method for degrading a degradable epoxy resin material, comprising the following steps:

[0019] The degradable epoxy resin material is subjected to mechanical crushing treatment and then immersed in an amine solution for reaction.

[0020] Furthermore, the amine solution comprises an amine compound, a solvent, a buffer and an auxiliary agent;

[0021] The amount of the amine solution used is sufficient to immerse the epoxy resin material.

[0022] Further, the amine compound comprises one or more of polyetheramine, ethylenediamine, diethylenetriamine, triethanolamine and diethanolamine;

[0023] The solvent comprises one or more of water, ethanol, methanol, isopropanol, dimethylformamide, dimethyl sulfoxide and acetonitrile;

[0024] The buffer comprises phosphate buffer and acetate buffer;

[0025] The auxiliary agent comprises a surfactant, a stabilizer, an antioxidant, a catalyst and an accelerator.

[0026] Furthermore, the reaction temperature is 60-90° C., and the reaction time is 6-24 hours.

[0027] Furthermore, the mass ratio of the amine compound, the solvent, the buffer and the auxiliary agent is 5-30:50-80:0.5-5:1.5-15.

[0028] Beneficial effects of the present invention:

[0029] The present invention introduces an ester exchange catalyst and an amine solution, and by adding an ester exchange catalyst to the epoxy resin material, the ester groups in the resin material can undergo an ester exchange reaction under specific conditions, thereby promoting the breakage of the resin structure. Amine solution degradation: An amine solution is used to destroy the crosslinking points of the epoxy resin through nucleophilic attack, thereby accelerating the degradation process of the material and achieving complete depolymerization of the epoxy resin within 24 hours. The method of the present invention successfully achieves the rapid degradation of epoxy resin materials and provides a new solution for the development of environmentally friendly resin-based fiber-reinforced composite materials. The present invention is particularly suitable for the application of composite materials and can achieve efficient environmentally friendly treatment after the end of their service life. DETAILED DESCRIPTION

[0030] The present invention provides a degradable epoxy resin material, comprising epoxy resin, a curing agent and an ester exchange catalyst;

[0031] The mass ratio of the epoxy resin, the curing agent and the transesterification catalyst is 50-90:50-90:0.5-5;

[0032] The transesterification catalyst comprises one or more of an organic titanium compound, a metal alkoxide and an organic tin compound.

[0033] In the present invention, the mass ratio of the epoxy resin, the curing agent and the transesterification catalyst is preferably 55-65:55-65:1-4, and more preferably 60:60:2-3.

[0034] In the present invention, the degradable epoxy resin material further comprises a reactive diluent component, and the mass ratio of the reactive diluent component to the epoxy resin is 5-20:50-90, preferably 10-15:60-80, and more preferably 12:65-75.

[0035] In the present invention, the degradable epoxy resin material further comprises a filler, and the amount of the filler is 100-500% of the mass of the epoxy resin, preferably 200-400%, and more preferably 300%.

[0036] In the present invention, the degradable epoxy resin material further comprises a toughener and a reactive diluent, the toughener comprises a polyether polyol; the reactive diluent comprises one or more of polypropylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, hexanediol diglycidyl ether, dipropylene glycol diglycidyl ether, triethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, ethylene glycol diglycidyl ether and butanediol diglycidyl ether.

[0037] In the present invention, the transesterification catalyst can promote the transesterification reaction and accelerate the depolymerization process of the polymer at a specific temperature.

[0038] In the present invention, the organic titanium compound comprises tetrabutyl titanate and / or isopropyl titanate, preferably tetrabutyl titanate;

[0039] The metal alkoxide comprises one or more of zinc acetate, lithium alkoxide and aluminum alkoxide, preferably zinc acetate;

[0040] The organotin compound is preferably dibutyltin dilaurate.

[0041] In the present invention, the epoxy resin comprises glycidyl ether epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, alicyclic epoxy resin, polyether epoxy resin, polyester epoxy resin, heterocyclic or special structure epoxy resin, preferably one or more of glycidyl ether epoxy resin, glycidyl ester epoxy resin and alicyclic epoxy resin.

[0042] In the present invention, the glycidyl ether epoxy resin comprises one or more of bisphenol A epoxy resin, bisphenol F epoxy resin, bisphenol S epoxy resin, phenol formaldehyde epoxy resin, o-cresol epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol AD ​​epoxy resin, hydroxymethyl bisphenol A epoxy resin, brominated epoxy resin and phosphorus-containing epoxy resin, preferably one or more of bisphenol A epoxy resin, bisphenol F epoxy resin and bisphenol S epoxy resin.

[0043] In the present invention, the glycidyl ester type epoxy resin comprises one or more of diglycidyl phthalate, diglycidyl isophthalate, diglycidyl terephthalate, diglycidyl tetrahydrophthalate, diglycidyl hexahydrophthalate, diglycidyl cyclohexane-1,2-dicarboxylate, diglycidyl 1,2-epoxycyclohexane 4,5-dicarboxylate, polyester glycidyl ester and modified glycidyl ester, preferably one or more of diglycidyl phthalate, diglycidyl isophthalate, diglycidyl terephthalate, diglycidyl tetrahydrophthalate and diglycidyl hexahydrophthalate.

[0044] In the present invention, the glycidylamine epoxy resin includes one or more of a bifunctional amino epoxy resin, a trifunctional amino epoxy resin and a tetrafunctional amino epoxy resin, and is preferably a trifunctional amino epoxy resin.

[0045] In the present invention, the alicyclic epoxy resin comprises one or more of 3',4'-epoxycyclohexylmethyl 3,4-epoxycyclohexylcarboxylate, bis((3,4-epoxycyclohexyl)methyl)adipate, poly[(2-oxiranyl)-1,2-cyclohexanediol]2-ethyl-2-(hydroxymethyl)-1,3-propylene glycol ether, 1,2-epoxy-4-vinylcyclohexane, vinylcyclohexene dioxide, epoxidized tetrahydrofuran and epoxidized cyclopentene, preferably one or more of 3',4'-epoxycyclohexylmethyl 3,4-epoxycyclohexylcarboxylate, bis((3,4-epoxycyclohexyl)methyl)adipate and poly[(2-oxiranyl)-1,2-cyclohexanediol]2-ethyl-2-(hydroxymethyl)-1,3-propylene glycol ether.

[0046] In the present invention, the heterocyclic or special structure epoxy resin includes one or more of polyethersulfoneketone epoxy resin, liquid crystal epoxy resin, polysiloxane copolymer modified epoxy resin, dicyclopentadiene epoxy resin, furan epoxy resin, thiophene epoxy resin, naphthalene type epoxy resin, biphenyl type epoxy resin and hydantoin epoxy resin, preferably one or more of polyethersulfoneketone epoxy resin, liquid crystal epoxy resin, polysiloxane copolymer modified epoxy resin and dicyclopentadiene epoxy resin.

[0047] In the present invention, the curing agent comprises one or more of an amine curing agent, an acid anhydride curing agent, an imidazole curing agent and a phenolic resin, and is preferably an amine curing agent.

[0048] In the present invention, the equivalent of the curing agent needs to match the epoxy equivalent of the epoxy resin to ensure sufficient curing reaction. For amine curing agents, the curing agent to epoxy equivalent ratio is 0.8 to 1:1, preferably 1:1.

[0049] In the present invention, the amine curing agent is preferably one or more of aliphatic amines, alicyclic amines, polyether amines, aromatic amines, polymeric amines, tertiary amines, tertiary amine salts and modified amines.

[0050] In the present invention, the fatty amine comprises one or more of ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, diethylamine and aminopropyltriethoxysilane.

[0051] In the present invention, the alicyclic amine comprises one or more of isophoronediamine, cyclohexylamine, methylcyclohexylamine, dicyclohexylamine and 4,4'-diaminodicyclohexylmethane.

[0052] In the present invention, the aromatic amine comprises one or more of diaminodiphenylmethane, 4,4'-diaminostilbene, 4,4'-diaminodiphenyl sulfone, m-phenylenediamine, o-phenylenediamine and p-phenylenediamine.

[0053] In the present invention, the tertiary amine comprises one or more of triethylamine, trimethylamine, triethanolamine and tetrabutylammonium chloride.

[0054] In the present invention, the acid anhydride curing agent comprises one or more of aliphatic acid anhydride, aromatic acid anhydride, alicyclic acid anhydride and special acid anhydride.

[0055] In the present invention, the aliphatic anhydride comprises anhydride prepared from an aliphatic dibasic acid, preferably one or more of succinic anhydride, glutaric anhydride, adipic anhydride, sebacic anhydride and dodecenylsuccinic anhydride.

[0056] In the present invention, the aromatic anhydride comprises anhydride prepared from aromatic dibasic acid, preferably one or more of phthalic anhydride, maleic anhydride, pyromellitic anhydride, 3,3',4,4'-dibenzoic anhydride, trimellitic anhydride and ketopyrimitic anhydride.

[0057] In the present invention, the alicyclic anhydride is an anhydride prepared from an alicyclic dibasic acid, preferably one or more of hexahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylhexahydrophthalic anhydride, tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, dicyclopentadiene dianhydride, nadic anhydride and methylnadic anhydride.

[0058] In the present invention, the special acid anhydride is a specially modified acid anhydride curing agent, preferably one or more of maleic anhydride, methyl-2-butenedioic anhydride, maleic anhydride modification, trifluoromaleic anhydride, hydrogenated maleic anhydride and hydrogenated phthalic anhydride.

[0059] In the present invention, the curing agent containing amino, hydroxyl or acid groups is used, which can increase the reactivity with the transesterification catalyst and help accelerate the degradation process.

[0060] In the present invention, the imidazole curing agent comprises one or more of monocyclic imidazole, imidazole derivatives, biimidazole compounds, imidazole salts and latent imidazole curing agents.

[0061] In the present invention, the monocyclic imidazole comprises one or more of imidazole, 1-methylimidazole, 2-methylimidazole, 4-methylimidazole, 2-ethyl-4-methylimidazole and 2-phenylimidazole.

[0062] In the present invention, the imidazole derivatives include one or more of long-chain alkyl imidazole, alkoxy imidazole, ester imidazole, amide imidazole and carboxy imidazole.

[0063] In the present invention, the bisimidazolyl compound is composed of two imidazole rings connected by a covalent bond, and is preferably one or more of 4,4'-bisimidazolylbenzene, 1,1'-bisimidazolylethane, 1,2-bisimidazolylethane and bisimidazolylmethane.

[0064] In the present invention, the imidazole salt is a salt generated by reacting imidazole with an acid or other salts, preferably one or more of imidazole tetrafluoroborate, imidazole phosphate, imidazole sulfate and imidazole p-toluenesulfonate.

[0065] In the present invention, the latent imidazole curing agent refers to imidazole that is chemically modified to be stable and non-reactive at room temperature, but can be rapidly cured under heating conditions, preferably one or more of N-ethylimidazole-2-carboxylate, N-phenylimidazole derivatives and blocked imidazole compounds.

[0066] The present invention also provides a method for degrading a degradable epoxy resin material, comprising the following steps:

[0067] The degradable epoxy resin material is subjected to mechanical crushing treatment and then immersed in an amine solution for reaction.

[0068] In the present invention, the amine solution comprises an amine compound, a solvent, a buffer and an auxiliary agent;

[0069] The amount of the amine solution used is sufficient to immerse the epoxy resin material.

[0070] In the present invention, the amine compound is selected from an amine compound with strong nucleophilicity that can significantly improve the degradation rate of epoxy resin, including one or more of polyetheramine, ethylenediamine, diethylenetriamine, triethanolamine and diethanolamine, preferably one or more of polyetheramine, ethylenediamine, diethylenetriamine and triethanolamine; polyetheramine (such as Jeffamine D-230) has the advantage of having strong nucleophilicity and can effectively react with epoxy resin to promote degradation. In general, polyetheramine has high reactivity and degradation efficiency, and is suitable for use in scenarios of rapid degradation. Ethylenediamine has the advantage that ethylenediamine is a small molecule amine with strong reactivity, but the degradation product may cause crosslinking or incomplete degradation, and is suitable for use in medium-speed degradation. Diethylenetriamine has the advantage of containing multiple amine groups and high reactivity, but may cause crosslinking and increased viscosity, and is suitable for use in medium-speed to mild degradation. Triethanolamine has the advantage of having good hydrophilicity and catalytic properties, relatively low reactivity, and is suitable for use in mild degradation.

[0071] The solvent comprises one or more of water, ethanol, methanol, isopropanol, dimethylformamide, dimethyl sulfoxide and acetonitrile, preferably one or more of ethanol, methanol and isopropanol;

[0072] The buffer comprises a phosphate buffer and an acetate buffer, preferably a phosphate buffer, wherein the phosphate buffer adjusts the pH of the solution by the acid-base balance of phosphate, and the acetate buffer maintains a neutral or weakly alkaline reaction environment by the balance of acetic acid and sodium acetate;

[0073] The auxiliary agent comprises a surfactant, a stabilizer, an antioxidant, a catalyst and an accelerator.

[0074] In the present invention, the surfactant helps to enhance the diffusion and permeability of the solution, and includes polyethylene glycol or polyvinyl alcohol, which can help the amine compound to be more evenly distributed on the surface of the epoxy resin and penetrate into the cross-linked network.

[0075] In the present invention, the auxiliary agent further comprises an ether solvent, preferably propylene glycol methyl ether or ethylene glycol methyl ether, which is used to improve the wettability and permeability of the solution, thereby accelerating the degradation process.

[0076] In the present invention, the antioxidant comprises 2,6-di-tert-butyl-p-cresol or vitamin E, which can effectively inhibit the oxidation reaction of amine compounds.

[0077] In the present invention, the stabilizer comprises ethylenediaminetetraacetic acid, which is used to remove metal ions in the solution and avoid the degradation of amine compounds caused by metal catalysis.

[0078] In the present invention, the catalyst comprises oxalic acid or citric acid, which is used to promote the reaction between the amine substance and the epoxy group.

[0079] In the present invention, the accelerator comprises a metal ion catalyst, preferably a zinc ion catalyst or a copper ion catalyst, which can accelerate the degradation process through a complex reaction.

[0080] In the present invention, the synergistic effect between the components in the amine solution is that the cross-linking network of the epoxy resin is rapidly degraded after contact.

[0081] Degradation mechanism of the present invention: During the degradation process, the transesterification catalyst firstly catalyzes the cleavage of the ester group to destroy the main chain structure of the resin. Subsequently, the amine solution further breaks the crosslinking points of the epoxy resin through a nucleophilic attack ring-opening reaction. Finally, the epoxy resin is decomposed into small molecular products, achieving rapid degradation.

[0082] In the present invention, a buffer is added to control the pH of the solution to ensure the mildness of the reaction and avoid excessively violent reactions or side reactions. The presence of the buffer can stabilize the reaction environment.

[0083] In the present invention, the reaction temperature is 60-90°C, preferably 70-80°C, and more preferably 75°C; this temperature range can achieve the best degradation effect in a shorter time, while avoiding the side effects that excessively high temperature may cause to the system. The reaction time is 6-24h, preferably 10-20h, and more preferably 15h. Within this temperature range, the synergistic effect of the transesterification catalyst and the amine solution can maximize the acceleration of the degradation reaction of the epoxy resin, while ensuring the complete destruction of the structure and the improvement of the degradation efficiency during the material degradation process.

[0084] In the present invention, the mass ratio of the amine compound, the solvent, the buffer and the auxiliary agent is 5-30:50-80:0.5-5:1.5-15, preferably 10-25:60-70:1-4:2-10, more preferably 15-20:62-68:2-3:4-8, and more preferably 18:65:2:8.

[0085] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0086] Example 1 (suitable for rapid degradation):

[0087]

[0088]

[0089] Example 2 (suitable for medium rate degradation):

[0090]

[0091] Example 3 (suitable for mild degradation):

[0092]

[0093] Example 4

[0094] Epoxy resin materials for wind turbine blade infusion:

[0095]

[0096] The epoxy resin material obtained above was immersed in the amine solution of Example 1, the pH was maintained at 6, and the degradation reaction was carried out at 80°C for 48 hours. The decomposition rate of the epoxy resin material exceeded 90%, and the final products were small molecule alcohol, acid and some residual epoxy resin, and the fiber part maintained its structure.

[0097] Example 5

[0098] Epoxy resin materials for wind power beam pultrusion:

[0099]

[0100] This formula is suitable for the pultrusion process of wind power beams, has high strength and toughness, and the ester exchange catalyst ensures that it can be quickly degraded when needed. The epoxy resin material obtained above is immersed in the amine solution of Example 2, and the degradation reaction is carried out at 70°C for 48 hours. The decomposition rate of the epoxy resin material exceeds 85%, and the final product is small molecule alcohol, acid and some residual epoxy resin, and the fiber part maintains the structure.

[0101] Example 6

[0102] Epoxy resin combination material for electrical casting

[0103]

[0104] This formula is suitable for electrical casting, has high strength and toughness, high and low temperature resistance, and the ester exchange catalyst ensures that it can be quickly degraded when needed. The epoxy resin material obtained above is immersed in the amine solution of Example 3 and subjected to degradation reaction at 60°C for 48 hours. The decomposition rate of the epoxy resin material exceeds 80%, and the final product is small molecule alcohol, acid and some residual epoxy resin, and the fiber part maintains the structure.

[0105] As can be seen from the above embodiments, the present invention provides a degradable epoxy resin material and a degradation method thereof. The present invention successfully achieves rapid degradation of epoxy resin materials by introducing an ester exchange catalyst and an amine solution, and provides a new solution for the development of environmentally friendly resin-based fiber-reinforced composite materials. The technology is particularly suitable for the application of composite materials, and can achieve efficient environmentally friendly treatment after the end of their service life.

[0106] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A degradable epoxy resin material, characterized in that: including epoxy resin, curing agent and transesterification catalyst; The mass ratio of the epoxy resin, the curing agent and the transesterification catalyst is 50-90:50-90:0.5-5; The transesterification catalyst comprises one or more of an organic titanium compound, a metal alkoxide and an organic tin compound.

2. The degradable epoxy resin material according to claim 1, characterized in that: The organic titanium compound comprises tetrabutyl titanate and / or isopropyl titanate; The metal alkoxide comprises one or more of zinc acetate, lithium alkoxide and aluminum alkoxide; The organotin compound comprises dibutyltin dilaurate.

3. The degradable epoxy resin material according to claim 1 or 2, characterized in that: The epoxy resin includes glycidyl ether epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, alicyclic epoxy resin, polyether epoxy resin, polyester epoxy resin, heterocyclic or special structure epoxy resin.

4. The degradable epoxy resin material according to claim 3, characterized in that: The glycidyl ether epoxy resin comprises one or more of bisphenol A epoxy resin, bisphenol F epoxy resin, bisphenol S epoxy resin, phenol formaldehyde epoxy resin, o-cresol epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol AD ​​epoxy resin, hydroxymethyl bisphenol A epoxy resin, brominated epoxy resin and phosphorus-containing epoxy resin; The glycidyl ester epoxy resin comprises one or more of diglycidyl phthalate, diglycidyl isophthalate, diglycidyl terephthalate, diglycidyl tetrahydrophthalate, diglycidyl hexahydrophthalate, diglycidyl cyclohexane-1,2-dicarboxylate, diglycidyl 1,2-epoxycyclohexane 4,5-dicarboxylate, polyester glycidyl ester and modified glycidyl ester; The glycidylamine epoxy resin comprises one or more of a difunctional amino epoxy resin, a trifunctional amino epoxy resin and a tetrafunctional amino epoxy resin; The alicyclic epoxy resin comprises one or more of 3,4-epoxycyclohexylcarboxylic acid-3',4'-epoxycyclohexylmethyl ester, bis((3,4-epoxycyclohexyl)methyl)adipate, poly[(2-oxiranyl)-1,2-cyclohexanediol]2-ethyl-2-(hydroxymethyl)-1,3-propylene glycol ether, 1,2-epoxy-4-vinylcyclohexane, vinylcyclohexene dioxide, epoxidized tetrahydrofuran and epoxidized cyclopentene; The heterocyclic or special structure epoxy resin includes one or more of polyethersulfoneketone epoxy resin, liquid crystal epoxy resin, polysiloxane copolymer modified epoxy resin, dicyclopentadiene epoxy resin, furan epoxy resin, thiophene epoxy resin, naphthalene epoxy resin, biphenyl epoxy resin and hydantoin epoxy resin.

5. The degradable epoxy resin material according to claim 1 or 4, characterized in that: The curing agent comprises one or more of an amine curing agent, an acid anhydride curing agent, an imidazole curing agent and a phenolic resin.

6. The method for degrading a degradable epoxy resin material according to any one of claims 1 to 5, characterized in that: The following steps are involved: The degradable epoxy resin material is subjected to mechanical crushing treatment and then immersed in an amine solution for reaction.

7. The method for degrading a degradable epoxy resin material according to claim 6, characterized in that: The amine solution comprises an amine compound, a solvent, a buffer and an auxiliary agent; The amount of the amine solution used is sufficient to immerse the epoxy resin material.

8. The method for degrading a degradable epoxy resin material according to claim 7, characterized in that: The amine compound comprises one or more of polyetheramine, ethylenediamine, diethylenetriamine, triethanolamine and diethanolamine; The solvent comprises one or more of water, ethanol, methanol, isopropanol, dimethylformamide, dimethyl sulfoxide and acetonitrile; The buffer comprises phosphate buffer and acetate buffer; The auxiliary agent comprises a surfactant, a stabilizer, an antioxidant, a catalyst and an accelerator.

9. The method for degrading a degradable epoxy resin material according to any one of claims 6 to 8, characterized in that: The reaction temperature is 60-90° C., and the reaction time is 6-24 hours.

10. The method for degrading a degradable epoxy resin material according to claim 7 or 8, characterized in that: The mass ratio of the amine compound, the solvent, the buffer and the auxiliary agent is 5-30:50-80:0.5-5:1.5-15.

Images