Photosensitive resin composition and method for preparing the same, photosensitive resin material and application thereof

Abstract

The present application relates to the technical field of organic photocuring, and discloses a photosensitive resin composition, a preparation method thereof, a photosensitive resin material prepared from the photosensitive resin composition and application of the photosensitive resin material. The composition comprises, in parts by weight, 10-30 parts of polyester modified epoxy acrylate, 15-30 parts of aliphatic polyurethane acrylate, 30-36 parts of active diluent, 2-5 parts of photoinitiator and 5-25 parts of mercapto-terminated polysulfide liquid rubber. The C-S bond and rubber phase contained in the mercapto-terminated polysulfide liquid rubber can not only reduce the oxygen inhibition effect and avoid the odor problem caused by small molecule mercaptan, but more importantly, can significantly improve the impact strength and gel rate of the photosensitive resin material prepared from the photosensitive resin composition, and reduce the volume shrinkage of photocuring, so that the comprehensive performance of the photosensitive resin composition is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of organic photocuring, in particular, to a photosensitive resin composition and a preparation method thereof, a photosensitive resin material and an application thereof. BACKGROUND

[0002] In recent years, with the development of ultraviolet curing technology and the rise of click reaction research, the click reaction between mercapto-alkene initiated by ultraviolet light is gradually becoming a new research hotspot. Due to the unique advantages of fast curing speed, low energy consumption and low oxygen inhibition effect after the combination of the two, the technology has wide application in the fields of optical elements, biomedical materials, photocuring adhesives and the like.

[0003] As an advanced manufacturing technology, 3D printing based on photopolymerization technology provides a new manufacturing method for materials and structures. It mainly uses light as the energy source to initiate the reaction of photosensitive resin, and then solidifies and forms. The general photosensitive resin is mainly composed of reactive prepolymer, active diluent, ultraviolet light initiator and other auxiliaries, etc. However, due to the forming principle itself, the shrinkage and warping of the formed product is large, the precision is small, and the mechanical properties are poor. The thiol-alkene photosensitive resin shows high polymerization activity, good oxygen inhibition effect and small polymerization shrinkage stress, and has good application prospect. SUMMARY

[0004] The purpose of the present application is to overcome the problems of large shrinkage and warping of the formed product, small precision and poor mechanical properties in the existing photocuring rapid prototyping technology, and to provide a photosensitive resin composition and a preparation method thereof, a photosensitive resin material prepared from the photosensitive resin composition and an application thereof. The mercapto-terminated polysulfide liquid rubber contained in the photosensitive resin composition not only can reduce the oxygen inhibition effect and avoid the odor problem caused by small molecule mercaptan, but more importantly, it can significantly improve the impact strength and other mechanical properties of the photosensitive resin material prepared from the photosensitive resin composition, and reduce the volume shrinkage of the resin composition during photocuring, so that the comprehensive performance of the photosensitive resin composition is improved.

[0005] In order to achieve the above purpose, the first aspect of the present application provides a photosensitive resin composition, characterized in that, in terms of weight parts, the composition comprises 10-30 parts of polyester modified epoxy acrylate, 15-30 parts of aliphatic polyurethane acrylate, 30-36 parts of active diluent, 2-5 parts of photoinitiator and 5-25 parts of mercapto-terminated polysulfide liquid rubber.

[0006] The second aspect of the present application provides a preparation method of the above photosensitive resin composition, characterized in that, the method comprises the following steps:

[0007] (1) mixing the active diluent, the photoinitiator and the mercapto-terminated polysulfide liquid rubber under light-proof conditions until the photoinitiator is completely dissolved to obtain a mixed solution;

[0008] (2) adding the polyester-modified epoxy acrylate and the aliphatic polyurethane acrylate, optionally the leveling agent, and optionally the polymerization inhibitor into the mixed solution under light-proof conditions and stirring to obtain a photosensitive resin composition.

[0009] The third aspect of the present application provides a photosensitive resin material, characterized in that the photosensitive resin material is prepared from the photosensitive resin composition.

[0010] The fourth aspect of the present application provides an application of the photosensitive resin material in the field of light-curing rapid prototyping.

[0011] Through the above technical solution, the photosensitive resin composition and the preparation method thereof, and the photosensitive resin material prepared from the photosensitive resin composition provided by the present application have the following beneficial effects:

[0012] The photosensitive resin composition provided by the present application comprises the mercapto-terminated polysulfide liquid rubber, the C-S bond contained in the liquid rubber and the rubber phase can not only reduce the oxygen inhibition effect and avoid the odor problem caused by small molecule mercaptan, but more importantly, can significantly improve the flexibility, impact strength, elongation at break and gel rate of the photosensitive resin material prepared from the photosensitive resin composition, and reduce the curing time and volume shrinkage rate during the light curing of the resin composition, so that the comprehensive performance of the photosensitive resin composition is improved.

[0013] Further, the mercapto-terminated polysulfide liquid rubber contained in the resin composition of the present application has a special structure, specifically, a mercapto-terminated flexible long chain is introduced on the side chain of the polysulfide liquid rubber, which not only improves the chemical and physical bonding of the liquid rubber with other reaction components, but also reduces the oxygen inhibition effect of the reaction and the unpleasant odor problem caused by small molecule mercaptan.

[0014] Further, the preparation method of the photosensitive resin composition provided by the present application is simple, and no solvent is used in the preparation method, so that the viscosity of the composition is easy to adjust, and the photosensitive resin composition obtained and the photosensitive resin material prepared from the photosensitive resin composition have improved performance and can meet the needs of different fields. DETAILED DESCRIPTION

[0015] The endpoints of the ranges and any values disclosed herein are not limited to the precise values recited as the exact dimensions are not critical to the invention. Any numeric range recited is intended to include all values from the lower value to the upper value, inclusive of both values, and to sub-ranges falling within the specified range. In this context, integers are not meant to be singular; they can be combined with other integers to produce a new integer.

[0016] The first aspect of the present application provides a photosensitive resin composition, characterized in that the composition comprises, in parts by weight: polyester-modified epoxy acrylate 10-30 parts, aliphatic polyurethane acrylate 15-30 parts, active diluent 30-36 parts, photoinitiator 2-5 parts, and mercapto-terminated polysulfide liquid rubber 5-25 parts.

[0017] In the present application, the photosensitive resin composition provided by the present application contains mercapto-terminated polysulfide liquid rubber, which contains C-S bonds and rubber phases, can not only reduce the oxygen inhibition effect and avoid the odor problem caused by small molecule mercaptan, but more importantly, can significantly improve the flexibility, impact strength, elongation at break, and other properties of the photosensitive resin material made from the photosensitive resin composition, and reduce the curing time of the resin composition during photocuring and the volume shrinkage rate of the resin composition during curing, so that the comprehensive performance of the photosensitive resin composition is improved.

[0018] Further, when the amount of each component in the photosensitive resin composition meets the above range, the mechanical properties such as impact strength and tensile strength of the photosensitive resin composition are significantly improved, and the volume shrinkage rate is reduced.

[0019] According to the present application, the composition comprises, in parts by weight: polyester-modified epoxy acrylate 25-30 parts, aliphatic polyurethane acrylate 15-25 parts, active diluent 30-36 parts, photoinitiator 2-5 parts, and mercapto-terminated polysulfide liquid rubber 15-25 parts.

[0020] According to the present application, the photosensitive resin composition further comprises a leveling agent and / or a polymerization inhibitor.

[0021] Further, the photosensitive resin composition further comprises 1-1.5 parts of a leveling agent and / or 1-1.5 parts of a polymerization inhibitor.

[0022] According to the present application, the number average molecular weight of the mercapto-terminated polysulfide liquid rubber is 5000-10000.

[0023] Further, the number average molecular weight of the mercapto-terminated polysulfide liquid rubber is 5000-8000.

[0024] According to the present application, the mercapto-terminated polysulfide liquid rubber comprises a structural unit A shown in formula (1), a structural unit B selected from any one of formula (2-1), formula (2-2) and formula (2-3), and a structural unit C shown in formula (3);

[0025] The content of the structural unit A is 30-55wt%, the content of the structural unit B is 20-50wt%, and the content of the structural unit C is 0-20wt%, based on the total weight of the mercapto-terminated polysulfide liquid rubber.

[0026]

[0027]

[0028] wherein m, n and p are each independently an integer of 2-10.

[0029] In the present application, the mercapto-terminated polysulfide liquid rubber comprising the flexible long side chain is used in the photosensitive resin composition, the liquid rubber is well dispersed in the resin, and has a good interpenetrating network with the resin matrix, which greatly improves the mechanical properties such as impact strength of the photosensitive resin composition.

[0030] In the present application, the content of each structural unit in the mercapto-terminated polysulfide liquid rubber is measured by nuclear magnetic resonance hydrogen spectrum method.

[0031] In the present application, the total content of the structural unit A, the structural unit B and the structural unit C is 100wt%.

[0032] According to the present application, m, n and p are each independently an integer of 2-5.

[0033] According to the present application, the content of the structural unit A is 45-55wt%, the content of the structural unit B is 35-50wt%, and the content of the structural unit C is 0.1-20wt%, based on the total weight of the mercapto-terminated polysulfide liquid rubber.

[0034] In one specific embodiment of the present application, the mercapto-terminated polysulfide liquid rubber A1 is composed of the structural unit A shown in formula (1) and the structural unit B shown in formula (2-1); wherein the content of the structural unit A is 50wt%, the content of the structural unit B is 50wt%, and in formula (2-1), m is 5. The number average molecular weight of the mercapto-terminated polysulfide rubber A1 is 6100.

[0035] In one specific embodiment of the present application, the mercapto-terminated polysulfide liquid rubber A2 is composed of structural unit A described by formula (1) and structural unit B described by formula (2-2); wherein the content of structural unit A is 55wt%, the content of structural unit B is 45wt%, and in formula (2-2), n is 4. The number average molecular weight of the mercapto-terminated polysulfide rubber A2 is 5200.

[0036] In one specific embodiment of the present application, the mercapto-terminated polysulfide liquid rubber A3 is composed of structural unit A described by formula (1), structural unit B described by formula (2-3) and structural unit C described by formula (3); wherein the content of structural unit A is 45wt%, the content of structural unit B is 35wt%, and the content of structural unit C is 20wt%, and in formula (2-3), p is 2. The number average molecular weight of the mercapto-terminated polysulfide rubber A3 is 8000.

[0037] According to the present application, the functionality of the polyester modified epoxy acrylate is 2-4, and the viscosity of the polyester modified epoxy acrylate is 3000-6500 cps under the condition of 100wt% solid content and 60℃; the functionality of the aliphatic polyurethane acrylate is 2-3, and the viscosity of the aliphatic polyurethane acrylate is 10000-20000 cps under the condition of 100wt% solid content and 25℃.

[0038] In the present application, the photosensitive resin composition containing the polyester modified epoxy acrylate and the aliphatic polyurethane acrylate with specific functionality and viscosity can make the photosensitive resin material prepared therefrom not only have excellent mechanical properties such as hardness possessed by epoxy resin, but also have high wear resistance, flexibility and excellent low temperature resistance possessed by polyurethane, so that the comprehensive performance of the photosensitive resin material is significantly improved. In particular, by adjusting the amount of the two to meet the range defined in the present application, the mechanical properties of the photosensitive resin material can be further improved.

[0039] Further, the polyester modified epoxy acrylate has a solid content of 100wt%, a functionality of 2, and a viscosity of 5500 cps under the condition of 60℃; and the aliphatic polyurethane acrylate has a functionality of 3, a solid content of 100wt%, and a viscosity of 12000 cps under the condition of 25℃.

[0040] According to the present application, the reactive diluent is selected from at least one of tripropyleneglycol diacrylate (TPGDA), 1,6-hexanediol diacrylate (HDDA), trimethylolpropane trimethacrylate (TMPTMA), isooctyl acrylate and pentaerythritol triacrylate (PETA).

[0041] In the present application, the active diluent of the specific type described above is used as the active diluent for the photosensitive resin composition, and the multiple active functional groups of the active diluent can participate in the reaction, thereby not only improving the curing rate of the photosensitive resin composition, but also improving the comprehensive performance of the photosensitive material prepared from the composition.

[0042] Further, the active diluent is selected from two or more of tripropyleneglycol diacrylate (TPGDA), 1,6-hexanediol diacrylate (HDDA), and trimethylolpropane trimethacrylate (TMPTMA). Further, in order to further improve the comprehensive performance of the photosensitive resin composition, the active diluent is tripropyleneglycol diacrylate (TPGDA), 1,6-hexanediol diacrylate (HDDA), and trimethylolpropane trimethacrylate (TMPTMA).

[0043] Further, the mass ratio of the tripropyleneglycol diacrylate (TPGDA), the 1,6-hexanediol diacrylate (HDDA), and the trimethylolpropane trimethacrylate (TMPTMA) is 10-16:5-10:5-10.

[0044] According to the present application, the free radical photoinitiator is selected from at least one of 1-hydroxycyclohexyl phenyl ketone (184), 2-hydroxy-2-methyl-1-phenylpropanone (1173), (2,4,6-trimethylbenzoyl) diphenyl phosphine oxide (TPO), a mixture of 2-isopropylthioxanthone (ITX) and 4-dimethylamino ethyl benzoate (EDAB), and benzophenone (BP).

[0045] In the present application, preferably, the photoinitiator is selected from 1-hydroxycyclohexyl phenyl ketone (184) and / or (2,4,6-trimethylbenzoyl) diphenyl phosphine oxide (TPO).

[0046] In the present application, the absorption spectrum of the photoinitiator of the specific type described above matches the emission spectrum of the radiation light source, can efficiently induce the chemical reaction between the unsaturated double bonds in the system, and improve the photoinitiating efficiency.

[0047] According to the present application, the leveling agent is selected from organic silicon surface auxiliaries and / or acrylic auxiliaries.

[0048] According to the present application, the polymerization inhibitor is selected from 2,6-di-tert-butyl phenol and / or p-methyl phenol.

[0049] The second aspect of the present application provides a preparation method of the photosensitive resin composition described above, characterized in that the method comprises the following steps:

[0050] (1) Under the condition of avoiding light, the active diluent, the photoinitiator and the thiol-terminated polythioether liquid rubber are mixed until the initiator is completely dissolved to obtain a mixed solution;

[0051] (2) Under the condition of avoiding light, the polyester-modified epoxy acrylate and the aliphatic polyurethane acrylate, optionally the leveling agent, and optionally the polymerization inhibitor are added into the mixed solution and stirred to obtain the photosensitive resin composition.

[0052] In the present application, the preparation method of the photosensitive resin composition is simple, and no solvent is used in the preparation method, so that the viscosity of the composition is easy to adjust, and the obtained photosensitive resin composition and the photosensitive resin material prepared from the photosensitive resin composition have improved performance and can meet the needs of different fields.

[0053] In the present application, the preparation method further comprises weighing the raw materials according to the weight ratio at room temperature.

[0054] According to the present application, in step (2), the stirring conditions include a stirring temperature of 40-60℃ and a stirring time of 1-2h.

[0055] In the present application, in order to avoid the adverse effects of light in the environment on the performance of the photosensitive resin composition, preferably, the preparation method further comprises placing the photosensitive resin composition in a dark environment for standing and defoaming.

[0056] The third aspect of the present application provides a photosensitive resin material, characterized in that the photosensitive resin material is prepared from the above-mentioned photosensitive resin composition.

[0057] The fourth aspect of the present application provides the application of the above-mentioned photosensitive resin material in the field of light-curing rapid prototyping.

[0058] In one specific embodiment of the present application, the photosensitive resin material is prepared according to the following steps: an appropriate amount of light-curing reaction liquid is taken and added dropwise onto a glass sheet, the thickness of the cured layer is controlled to be 0.2-0.5mm, and the photosensitive resin material is prepared by placing it in a UV light-curing machine for light-curing.

[0059] In the present application, the light-curing conditions include a light-curing machine power of 1000-1500W, a main emission wavelength of 365nm and 385nm, an irradiation distance of 20-25cm, and a temperature of 20-30℃.

[0060] The present application will be described in detail by way of examples below. In the following examples,

[0061] Curing time: The liquid resin is coated on a glass sheet using a wire bar coater, the wet film thickness is 0.5mm, and the curing time is measured by the finger dry method by placing it in a UV light-curing machine for curing.

[0062] Flexibility: QTX type paint film elasticity tester was used, which was composed of 6 steel rods with different diameters, each rod was 35 mm long, and the curvature radius was 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 5 mm and 7.5 mm respectively. Tinplate sheet with the size of 120 mm x 25 mm x 0.2 mm was selected. The photocured film was placed with the film surface facing upwards, and the sample plate was tightly pressed on the rod with the diameter selected, and was bent around the rod within 2-3 s. After bending, the two thumbs should be symmetric to the center line of the rod. Then, the damage phenomena such as network, crack and peeling of the paint film were observed. The minimum diameter of the rod on which the sample plate was bent without causing damage to the paint film represented the flexibility of the paint film.

[0063] Impact strength: tested according to the standard of GB / T1043.1-2008.

[0064] Tensile strength and elongation at break: 5 samples with the size of 60 x 10 x 4 mm were prepared according to the type I sample in GB / T1042-92. 3 Dumbbell-shaped forming block was used to test the tensile strength and elongation at break of the cured material by using a universal mechanical tester, and the loading speed was 5 mm / min.

[0065] Gel content: acetone extraction method was used to test the gel content. The cured film (mass m0) was placed in a Soxhlet extractor, soaked and extracted with acetone for 8 h, and dried at 100°C to constant weight, and then the mass m1 was measured. The gel content was calculated as ηgel = (m1 / m0) x 100%.

[0066] Volume shrinkage rate: the density of the resin system before curing ρ1 and the density after complete curing ρ2 were measured at room temperature by using a specific gravity bottle method, and then the volume shrinkage rate % = (ρ2-ρ1) / ρ2 x 100%.

[0067] Mercapto-terminated polysulfide liquid rubber A1, self-made;

[0068] Mercapto-terminated polysulfide liquid rubber A2, self-made;

[0069] Mercapto-terminated polysulfide liquid rubber A3, self-made;

[0070] Polyester-modified epoxy acrylate, CM3225, solid content 100 wt%, functionality 2, viscosity 5500 cps under the test condition of 60°C, Guangzhou Chenglan Material Technology Co., Ltd.;

[0071] Aliphatic polyurethane-modified epoxy resin acrylate, functionality 3, solid content 100 wt%, viscosity 12000 cps under the test condition of 25°C, Guangzhou Chenglan Material Technology Co., Ltd.;

[0072] Flowing agent is silicone surface additive BYK-UV3570, Germany BYK-Chemical Co., Ltd.

[0073] The other raw materials used in the examples and comparative examples are commercially available.

[0074] The specific experiments of examples 1-10 and comparative examples 1-5 include the following steps:

[0075] All raw materials were weighed according to the proportions in Table 1, and the active diluent, photoinitiator and mercapto-terminated polysulfide liquid rubber were added to the container respectively, and magnetically stirred under light-proof conditions until the photoinitiator was completely dissolved; then the polyester-modified epoxy acrylate and aliphatic polyurethane acrylate, as well as the leveling agent and polymerization inhibitor, were added to the above prepared mixture, and stirred at 50°C under light-proof conditions for 2h. After the components were mixed uniformly, the photosensitive resin composition was obtained and placed in a dark environment for standing and defoaming for use.

[0076] The photosensitive resin composition was prepared according to the formulations shown in Table 1 below

[0077] Table 1

[0078]

[0079]

[0080] Table 1 (continued)

[0081]

[0082] Test Example

[0083] An appropriate amount of photosensitive resin composition examples 1-10 and comparative examples 1-5 was added dropwise to a glass sheet, and the cured layer thickness was 0.5mm. Then it was placed in a 1000W ultraviolet light curing machine (main emission wavelength was 365nm and 385nm, irradiation distance was 20cm) and cured at room temperature to obtain a photosensitive resin material. The performance of the above photosensitive resin material was tested, and the results are shown in Table 2.

[0084] Table 2

[0085]

[0086] As can be seen from Table 2, the photosensitive resin compositions comprising the thiol-terminated polysulfide liquid rubber provided by the embodiments 1-10 of the present application not only can reduce the unpleasant odor brought by small molecule mercaptan, but more importantly, the comprehensive performance of the photosensitive resin material is improved. Compared with the photosensitive resin material without the thiol-terminated polysulfide liquid rubber, the photosensitive resin material added with the thiol-terminated polysulfide liquid rubber has faster curing speed, which is reduced from 30s to 10s, in addition, the mechanical properties such as impact strength and tensile strength are obviously improved, and the highest values are 65.1 / KJ·m 2 and 65MPa, respectively, the elongation at break is up to 73%, the flexibility is obviously improved, the gel rate is increased from 70% to 94%, and the volume shrinkage rate is reduced from 5.8% to 3.1%.

[0087] As can be seen from the embodiments 3-7 and 9-10, when the amount of each component in the photosensitive resin composition meets the more preferred range of the present application, the viscosity of the composition system is suitable, easy to operate, and the liquid rubber is well dispersed in the resin, and the resin matrix forms an interpenetrating network, which greatly improves the mechanical properties such as impact strength of the photosensitive resin composition.

[0088] The preferred embodiments of the present application are described in detail above, but the present application is not limited thereto. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be considered as disclosed by the present application, and all fall within the protection scope of the present application.

Claims

1. A photosensitive resin composition, characterized by comprising: The composition comprises, in parts by weight, 10-30 parts of a polyester-modified epoxy acrylate, 15-30 parts of an aliphatic polyurethane acrylate, 30-36 parts of an active diluent, 2-5 parts of a photoinitiator, and 5-25 parts of a mercapto-terminated polysulfide liquid rubber. The number average molecular weight of the mercapto-terminated polysulfide liquid rubber is 5000-10000.

2. The photosensitive resin composition according to claim 1, wherein The composition comprises, in parts by weight, 25-30 parts of a polyester-modified epoxy acrylate, 15-25 parts of an aliphatic polyurethane acrylate, 30-36 parts of an active diluent, 2-5 parts of a photoinitiator, and 15-25 parts of a mercapto-terminated polysulfide liquid rubber.

3. The photosensitive resin composition according to claim 1 or 2, wherein, The photosensitive resin composition further comprises a leveling agent and / or a polymerization inhibitor.

4. The photosensitive resin composition according to claim 3, wherein The photosensitive resin composition further comprises 1-1.5 parts of a leveling agent and / or 1-1.5 parts of a polymerization inhibitor.

5. The photosensitive resin composition according to claim 1 or 2, wherein The mercapto-terminated polysulfide liquid rubber comprises a structural unit A represented by formula (1), a structural unit B selected from any one of formula (2-1), formula (2-2), and formula (2-3), and a structural unit C represented by formula (3); based on the total weight of the mercapto-terminated polysulfide liquid rubber, the content of the structural unit A is 30-55 wt%, the content of the structural unit B is 20-50 wt%, and the content of the structural unit C is 0-20 wt%. Formula (1) Formula (2-1) Formula (2-2) formula (2-3) Formula (3) Wherein, m, n and p are each independently an integer of 2-10.

6. The photosensitive resin composition according to claim 5, wherein m, n and p are each independently an integer of 2-5.

7. The photosensitive resin composition according to claim 5, wherein Based on the total weight of the mercapto-terminated polysulfide liquid rubber, the content of the structural unit A is 45-55 wt%, the content of the structural unit B is 35-50 wt%, and the content of the structural unit C is 0.1-20 wt%.

8. The photosensitive resin composition according to claim 1 or 2, wherein The functionality of the polyester-modified epoxy acrylate is 2-4, and the viscosity of the polyester-modified epoxy acrylate is 3000-6500 cps at a solid content of 100 wt% and a temperature of 60°C. The functionality of the aliphatic polyurethane acrylate is 2-3, and the viscosity of the aliphatic polyurethane acrylate is 10000-20000 cps at a solid content of 100 wt% and a temperature of 25°C.

9. The photosensitive resin composition according to claim 1 or 2, wherein, The active diluent is selected from at least one of tripropyleneglycol diacrylate, 1,6-hexanediol diacrylate, trimethylolpropane trimethacrylate, isooctyl acrylate, and pentaerythritol triacrylate.

10. The photosensitive resin composition according to claim 9, wherein The active diluent is selected from at least two of tripropyleneglycol diacrylate, 1,6-hexanediol diacrylate, and trimethylolpropane trimethacrylate.

11. The photosensitive resin composition according to claim 10, wherein The active diluent is tripropyleneglycol diacrylate, 1,6-hexanediol diacrylate, and trimethylolpropane trimethacrylate.

12. The photosensitive resin composition according to claim 11, wherein The mass ratio of the tripropyleneglycol diacrylate, the 1,6-hexanediol diacrylate, and the trimethylolpropane trimethacrylate is 10-16:5-10:5-10.

13. The photosensitive resin composition according to claim 1 or 2, wherein The photoinitiator is at least one of 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenylpropanone, a mixture of (2,4,6-trimethylbenzoyl) diphenyl phosphine oxide, 2-isopropylthioxanthone and ethyl 4-dimethylaminobenzoate, and benzophenone.

14. The photosensitive resin composition according to claim 13, wherein The photoinitiator is selected from 1-hydroxycyclohexyl phenyl ketone and / or (2,4,6-trimethylbenzoyl) diphenyl phosphine oxide.

15. The photosensitive resin composition according to claim 3, wherein The leveling agent is selected from silicone surface adjuvants and / or acrylate adjuvants.

16. The photosensitive resin composition according to claim 3, wherein The polymerization inhibitor is selected from 2,6-di-tert-butyl phenol and / or p-methyl phenol.

17. A method for producing the photosensitive resin composition according to any one of claims 1 to 16, characterized by, The method comprises the following steps: (1) mixing an active diluent, a photoinitiator, and a mercapto-terminated polysulfide liquid rubber under light-proof conditions until the photoinitiator is completely dissolved to obtain a mixed solution; (2) adding a polyester-modified epoxy acrylate and an aliphatic polyurethane acrylate, optionally a leveling agent, and optionally a polymerization inhibitor to the mixed solution under light-proof conditions, and stirring to obtain a photosensitive resin composition.

18. The method of making according to claim 17, wherein, In step (2), the stirring conditions include a stirring temperature of 40-60°C and a stirring time of 1-2h.

19. A photosensitive resin material, characterized by, The photosensitive resin material is prepared from the photosensitive resin composition of any one of claims 1-16.

20. Use of the photosensitive resin material of claim 19 in photocuring rapid prototyping.

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