Room temperature / UV dual-curing pouring sealant and preparation method thereof

Abstract

The invention relates to the technical field of electronic pouring sealants, and discloses a room temperature / UV dual-curing pouring sealant and a preparation method thereof.The room temperature / UV dual-curing pouring sealant is prepared by sequentially feeding acrylic monoester, tripropyl alcohol diacrylate and acrylic acid, evenly stirring, continuing to add 1-hydroxy-cyclohexyl-phenyl ketone and benzophenone, and stirring to obtain a solution A; and continuing to add silane modified polyurethane, modified benzoxazine and epoxy acrylic acid into the solution A, and stirring in vacuum to obtain the room temperature / UV dual-curing pouring sealant. In the stirring process, a terminal hydroxyl group in the silane modified polyurethane, a hydroxyl group in the modified benzoxazine and an epoxy group in the epoxy acrylic acid are subjected to a ring-opening reaction and are cross-linked with one another to form a molecular cross-linked network, so that the connection is tighter, and the mechanical property is improved. A hydroxyl-terminated group in silane modified polyurethane, a silicon element and a phosphorus element in modified benzoxazine and a benzoxazine structure have good flame retardance, a flame-retardant system is formed, and synergistic flame retardance is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of electronic potting glue, in particular to a room temperature / UV dual-curing potting glue and a preparation method thereof. Background Art

[0002] With the rapid development of electronic information technology in today's world, electronic components and logic circuits tend to be denser and smaller. Since electronic components continuously release heat when working, if the heat cannot be conducted in time, it is easy to form local high temperature, which may cause some components to burn out and fail to work properly. Therefore, the demand for potting glue in the electronics, automobile and optoelectronic industries continues to grow, and the performance of potting glue directly affects the reliability, stability and service life of the product.

[0003] At present, the potting glue widely used in the market mainly includes epoxy resin potting glue, silicone potting glue and polyurethane potting glue. However, these traditional potting glues still have many shortcomings. For example, the air tightness is not ideal. In harsh environments such as humidity and corrosion, it is easy to cause damage to components, thus affecting the performance and service life of the product; in addition, the large shrinkage and hardness can easily cause stress damage to the mechanical structure; and the epoxy resin potting glue has a long curing time, which not only increases the production cycle but also affects the production efficiency; the silicone potting glue has average performance in bonding strength and is difficult to meet the bonding requirements of high-demand application scenarios. Therefore, improving the performance of potting glue and thus increasing the service life of electronic devices is a technical problem that technicians in this field need to solve. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a room temperature / UV dual-curing potting adhesive and a preparation method thereof, which has good flame retardancy, tensile strength and air tightness.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned object, the present invention provides the following technical scheme: a room temperature / UV dual-curing potting glue, comprising the following weight components: 1-2 weight parts of acrylic acid monoester, 0.8-1.3 weight parts of tripropylene diacrylate, 0.4-0.9 weight parts of acrylic acid, 14-25 weight parts of epoxy acrylate, 0.1-0.3 weight parts of 1-hydroxy-cyclohexyl-phenyl ketone, 0.2-0.3 weight parts of benzophenone, 2-4 weight parts of silane-modified polyurethane, and 3-7 weight parts of modified benzoxazine.

[0008] Preferably, the preparation method of the silane-modified polyurethane is:

[0009] (1) Add octamethylcyclotetrasiloxane and 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane to a reaction kettle, add tetramethylammonium hydroxide catalyst thereto in a nitrogen atmosphere, heat to 100-110° C., react for 2-5 hours, then heat to 120-135° C., react for 0.8-1 hour, cool and discharge after reaction, and obtain a double-terminal epoxy silicone oil;

[0010] (2) adding pentaerythritol methyl silicate and double-ended epoxy silicone oil to an acetone solvent, stirring and mixing, and continuously adding boron trifluoride etherate catalyst thereto, reacting at 65-80° C. for 7-10 hours, and concentrating and washing the solution after the reaction to obtain an intermediate 1;

[0011] (3) adding 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide and magnolol into a reactor, introducing nitrogen protection, reacting at 75-90° C. for 6-12 hours, cooling after completion, filtering, washing, and obtaining a phosphorus-containing chain extender;

[0012] (4) Toluene diisocyanate and polyether polyol are added to a reactor, and then dibutyltin dilaurate catalyst is added to carry out prepolymerization under a nitrogen atmosphere at a temperature of 70-90° C. for 2-4 hours. Then, intermediate 1 and a phosphorus-containing chain extender are added and stirred to carry out a chain extension reaction. The reaction is carried out at 40-65° C. for 20-25 minutes. After the reaction is completed, the mixture is cooled naturally to obtain a silane-modified polyurethane.

[0013] Preferably, the mass ratio of octamethylcyclotetrasiloxane, 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane and tetramethylammonium hydroxide catalyst in (1) is 5.1-5.4:1:0.01-0.03.

[0014] Preferably, the mass ratio of pentaerythritol methyl silicate, double-ended epoxy silicone oil and boron trifluoride etherate catalyst in (2) is 1.2-1.6:1:0.02-0.03.

[0015] Preferably, the mass ratio of 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide to magnolol in (3) is 1.2-1.4:1.

[0016] Preferably, in (4), the ratio of toluene diisocyanate, polyether polyol, dibutyltin dilaurate catalyst, intermediate 1, and phosphorus-containing chain extender is 0.8-1.3:1:0.02-0.04:0.4-0.6:0.7-0.9.

[0017] Preferably, the preparation method of the modified benzoxazine is: 3-5 parts by weight of 2-amino-4,6-dihydroxypyrimidine, 6-14 parts by weight of an aqueous solution of formaldehyde, and 10-15 parts by weight of a phosphorus-containing chain extender are added to a toluene solvent, fully dissolved, and subjected to a cyclization reaction, reacted at 60-90° C. for 10-15 hours, and then distilled under reduced pressure, washed with deionized water, and the crude product was recrystallized from dichloromethane to obtain the modified benzoxazine.

[0018] Preferably, the preparation method of the room temperature / UV dual-curing potting glue is: add acrylate monoester, tripropylene glycol diacrylate, and acrylic acid in sequence, set the stirring speed to 10-12 rpm, the dispersion speed to 600 rpm, stir for 20-35 min until the materials are uniformly stirred, continue to add 1-hydroxy-cyclohexyl-phenyl ketone and benzophenone, set the stirring speed to 10-14 rpm, the dispersion speed to 600-650 rpm, vacuum stir for 30-40 min, and the vacuum reaches -0.09 to -0.08 MPa to obtain liquid A; continue to add silane-modified polyurethane, modified benzoxazine, and epoxy acrylic acid to liquid A, set the stirring speed to 8-11 rpm, the dispersion speed to 600-660 rpm, vacuum stir for 30-45 min, and the vacuum reaches -0.09 to -0.07 MPa, until the materials are uniformly stirred, and the room temperature / UV dual-curing potting glue is obtained.

[0019] (III) Beneficial technical effects

[0020] The invention provides a method for preparing a liquid A by sequentially adding acrylate monoester, tripropylene glycol diacrylate and acrylic acid, stirring them uniformly, and then adding 1-hydroxy-cyclohexyl-phenyl ketone and benzophenone thereto, stirring them, and then adding silane-modified polyurethane, modified benzoxazine and epoxy acrylic acid to the liquid A, and then stirring them in vacuum to obtain a room temperature / UV dual-curing potting adhesive.

[0021] Octamethylcyclotetrasiloxane and 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane are reacted to introduce epoxy groups, thereby obtaining double-terminal epoxy silicone oil; hydroxyl groups in pentaerythritol methyl silicate and epoxy groups in double-terminal epoxy silicone oil are subjected to addition reaction to introduce hydroxyl groups, thereby obtaining intermediate 1; phosphorus-hydrogen bonds in 9,10-dihydro-9-oxa-10-phosphophanthenanthrene-10-oxide and alkenyl groups in magnolol are subjected to addition reaction to introduce phenolic hydroxyl groups, thereby obtaining a phosphorus-containing chain extender; toluene diisocyanate and polyether polyol are added to a reactor, and then a dibutyltin dilaurate catalyst is added to perform prepolymerization, and then intermediate 1 and a phosphorus-containing chain extender are added and stirred to perform a chain extension reaction, thereby obtaining a silane-modified polyurethane; 2-amino-4,6-dihydroxypyrimidine, formaldehyde, and a phosphorus-containing chain extender are subjected to a cyclization reaction, thereby obtaining a modified benzoxazine.

[0022] During the stirring process, the terminal hydroxyl groups in the silane-modified polyurethane and the hydroxyl groups in the modified benzoxazine will undergo a ring-opening reaction with the epoxy groups in the epoxy acrylic acid, and cross-linking will occur between each other to form a molecular cross-linking network, making the connection more tightly, while also increasing the compatibility and mechanical properties between each other. The terminal hydroxyl groups in the silane-modified polyurethane, the silicon element, the phosphorus element, and the benzoxazine structure in the modified benzoxazine have good flame retardancy, forming a flame retardant system, and synergistic flame retardancy. The potting adhesive of the present invention also has good viscosity and air tightness. DETAILED DESCRIPTION

[0023] Example 1

[0024] (1) Add octamethylcyclotetrasiloxane and 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane to a reaction kettle, and then add tetramethylammonium hydroxide catalyst thereto in a nitrogen atmosphere, wherein the mass ratio of octamethylcyclotetrasiloxane, 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane and tetramethylammonium hydroxide catalyst is 5.1:1:0.01, heat to 100° C., react for 2 h, then heat to 120° C., react for 0.8 h, cool and discharge after reaction, and obtain double-terminal epoxy silicone oil;

[0025] (2) adding pentaerythritol methyl silicate and double-ended epoxy silicone oil to an acetone solvent, stirring and mixing, and continuously adding boron trifluoride etherate catalyst thereto, wherein the mass ratio of pentaerythritol methyl silicate, double-ended epoxy silicone oil, and boron trifluoride etherate catalyst is 1.2:1:0.02, reacting at 65° C. for 7 h, and concentrating and washing the solution after the reaction to obtain an intermediate 1;

[0026] (3) adding 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide and magnolol into a reactor, wherein the mass ratio of 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide to magnolol is 1.2:1, introducing nitrogen protection, reacting at 75° C. for 6 h, cooling after completion, filtering, washing, and obtaining a phosphorus-containing chain extender;

[0027] (4) Adding toluene diisocyanate and polyether polyol to a reactor, adding dibutyltin dilaurate catalyst, and prepolymerizing under a nitrogen atmosphere at a temperature of 70° C. for 2 h, then adding intermediate 1 and a phosphorus-containing chain extender, wherein the ratio of toluene diisocyanate, polyether polyol, dibutyltin dilaurate catalyst, intermediate 1, and phosphorus-containing chain extender is 0.8:1:0.02:0.4:0.7, stirring for chain extension reaction, reacting at 40° C. for 20 min, and cooling naturally after the reaction is completed to obtain a silane-modified polyurethane;

[0028] (5) 3 parts by weight of 2-amino-4,6-dihydroxypyrimidine, 6 parts by weight of an aqueous solution of formaldehyde, and 10 parts by weight of a phosphorus-containing chain extender are added to a toluene solvent, fully dissolved, and subjected to a cyclization reaction at 60° C. for 10 h. After the reaction, the reaction is performed under reduced pressure distillation, washed with deionized water, and the crude product is recrystallized from dichloromethane to obtain a modified benzoxazine;

[0029] (6) 1 part by weight of monoacrylate, 0.8 part by weight of tripropylene glycol diacrylate, and 0.4 part by weight of acrylic acid were added in sequence, the stirring speed was set to 10 rpm, the dispersion speed was set to 600 rpm, and the mixture was stirred for 20 min until the mixture was uniformly stirred. Then, 0.1 part by weight of 1-hydroxy-cyclohexyl-phenyl ketone and 0.2 part by weight of benzophenone were added thereto, the stirring speed was set to 10 rpm, the dispersion speed was set to 600 rpm, and the mixture was stirred under vacuum for 30 min, and the vacuum was reduced to -0.09 MPa, to obtain liquid A. Then, 2 parts by weight of silane-modified polyurethane, 3 parts by weight of modified benzoxazine, and 14 parts by weight of epoxy acrylate were added to liquid A, the stirring speed was set to 8 rpm, the dispersion speed was set to 600 rpm, and the mixture was stirred under vacuum for 30 min, and the vacuum was reduced to -0.09 MPa, to obtain a room temperature / UV dual-curing potting adhesive.

[0030] Example 2

[0031] (1) Add octamethylcyclotetrasiloxane and 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane to a reaction kettle, and then add tetramethylammonium hydroxide catalyst thereto in a nitrogen atmosphere, wherein the mass ratio of octamethylcyclotetrasiloxane, 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane and tetramethylammonium hydroxide catalyst is 5.4:1:0.03, heat to 110° C., react for 5 h, then heat to 135° C., react for 1 h, and cool and discharge after reaction to obtain a double-terminal epoxy silicone oil;

[0032] (2) adding pentaerythritol methyl silicate and double-ended epoxy silicone oil to an acetone solvent, stirring and mixing, and continuously adding boron trifluoride etherate catalyst thereto, wherein the mass ratio of pentaerythritol methyl silicate, double-ended epoxy silicone oil, and boron trifluoride etherate catalyst is 1.6:1:0.03, reacting at 80° C. for 10 h, and concentrating and washing the solution after the reaction to obtain an intermediate 1;

[0033] (3) adding 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide and magnolol into a reactor, wherein the mass ratio of 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide to magnolol is 1.4:1, introducing nitrogen protection, reacting at 90° C. for 12 h, cooling after completion, filtering, washing, and obtaining a phosphorus-containing chain extender;

[0034] (4) Adding toluene diisocyanate and polyether polyol to a reactor, adding dibutyltin dilaurate catalyst, and prepolymerizing under a nitrogen atmosphere at a temperature of 90° C. for 4 hours, then adding intermediate 1 and phosphorus-containing chain extender, wherein toluene diisocyanate, polyether polyol, dibutyltin dilaurate catalyst, intermediate 1, phosphorus-containing chain extender are in a ratio of 1.3:1:0.04:0.6:0.9, stirring for chain extension reaction, reacting at 65° C. for 25 minutes, and cooling naturally after the reaction is completed to obtain silane-modified polyurethane;

[0035] (5) adding 5 parts by weight of 2-amino-4,6-dihydroxypyrimidine, 14 parts by weight of an aqueous solution of formaldehyde, and 15 parts by weight of a phosphorus-containing chain extender into a toluene solvent, fully dissolving them, and carrying out a cyclization reaction at 90° C. for 15 h. After the reaction, the mixture was distilled under reduced pressure, washed with deionized water, and the crude product was recrystallized from dichloromethane to obtain a modified benzoxazine;

[0036] (6) 2 parts by weight of acrylic acid monoester, 1.3 parts by weight of tripropylene glycol diacrylate, and 0.9 parts by weight of acrylic acid were added in sequence, the stirring speed was set to 12 rpm, the dispersion speed was set to 600 rpm, and the mixture was stirred for 35 minutes until the mixture was uniformly stirred. Then, 0.3 parts by weight of 1-hydroxy-cyclohexyl-phenyl ketone and 0.3 parts by weight of benzophenone were added thereto, the stirring speed was set to 14 rpm, the dispersion speed was set to 650 rpm, and the mixture was stirred under vacuum for 40 minutes, and the vacuum was reduced to -0.08 MPa, to obtain liquid A. Then, 4 parts by weight of silane-modified polyurethane, 7 parts by weight of modified benzoxazine, and 25 parts by weight of epoxy acrylate were added to liquid A, the stirring speed was set to 11 rpm, the dispersion speed was set to 660 rpm, and the mixture was stirred under vacuum for 45 minutes, and the vacuum was reduced to -0.07 MPa, to obtain a room temperature / UV dual-curing potting adhesive.

[0037] Example 3

[0038] (1) Add octamethylcyclotetrasiloxane and 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane to a reaction kettle, and then add tetramethylammonium hydroxide catalyst thereto in a nitrogen atmosphere, wherein the mass ratio of octamethylcyclotetrasiloxane, 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane and tetramethylammonium hydroxide catalyst is 5.3:1:0.02, heat to 105° C., react for 3 h, then heat to 125° C., react for 0.9 h, and cool and discharge after reaction to obtain a double-terminal epoxy silicone oil;

[0039] (2) adding pentaerythritol methyl silicate and double-ended epoxy silicone oil to an acetone solvent, stirring and mixing, and continuously adding boron trifluoride etherate catalyst thereto, wherein the mass ratio of pentaerythritol methyl silicate, double-ended epoxy silicone oil, and boron trifluoride etherate catalyst is 1.4:1:0.025, reacting at 72° C. for 8 h, and concentrating and washing the solution after the reaction to obtain an intermediate 1;

[0040] (3) adding 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide and magnolol into a reactor, wherein the mass ratio of 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide to magnolol is 1.3:1, introducing nitrogen protection, reacting at 82° C. for 10 h, cooling after completion, filtering, washing, and obtaining a phosphorus-containing chain extender;

[0041] (4) Adding toluene diisocyanate and polyether polyol to a reactor, adding dibutyltin dilaurate catalyst, and prepolymerizing under a nitrogen atmosphere at a temperature of 75° C. for 3 h, then adding intermediate 1 and phosphorus-containing chain extender, wherein toluene diisocyanate, polyether polyol, dibutyltin dilaurate catalyst, intermediate 1, phosphorus-containing chain extender are in a ratio of 1.2:1:0.03:0.5:0.8, stirring for chain extension reaction, reacting at 55° C. for 21 min, and cooling naturally after the reaction is completed to obtain silane-modified polyurethane;

[0042] (5) 4 parts by weight of 2-amino-4,6-dihydroxypyrimidine, 10 parts by weight of an aqueous solution of formaldehyde, and 12.5 parts by weight of a phosphorus-containing chain extender are added to a toluene solvent, fully dissolved, and subjected to a cyclization reaction at 75° C. for 12.5 hours. After the reaction, the mixture is distilled under reduced pressure, washed with deionized water, and the crude product is recrystallized from dichloromethane to obtain a modified benzoxazine;

[0043] (6) 1 part by weight of acrylic acid monoester, 1.2 parts by weight of tripropylene glycol diacrylate, and 0.7 parts by weight of acrylic acid were added in sequence, the stirring speed was set to 11 rpm, the dispersion speed was set to 600 rpm, and the mixture was stirred for 24 minutes until the mixture was uniformly stirred. Then, 0.2 parts by weight of 1-hydroxy-cyclohexyl-phenyl ketone and 0.25 parts by weight of benzophenone were added thereto, the stirring speed was set to 12 rpm, the dispersion speed was set to 630 rpm, and the mixture was stirred under vacuum for 35 minutes, and the vacuum was reduced to -0.09 MPa, to obtain liquid A. Then, 2-4 parts by weight of silane-modified polyurethane, 5 parts by weight of modified benzoxazine, and 16 parts by weight of epoxy acrylate were added to liquid A, the stirring speed was set to 8 rpm, the dispersion speed was set to 630 rpm, and the mixture was stirred under vacuum for 40 minutes, and the vacuum was reduced to -0.09 MPa, to obtain a room temperature / UV dual-curing potting adhesive.

[0044] Comparative Example 1

[0045] The difference between this comparative example and Example 3 is that no silane-modified polyurethane is added.

[0046] Comparative Example 2

[0047] The difference between this comparative example and Example 3 is that no modified benzoxazine is added.

[0048] Use an oxygen index tester to test the oxygen index of the potting compound.

[0049] Use a horizontal and vertical combustion tester to test the combustion level of the potting compound.

[0050] Table 1: Flame retardancy tests.

[0051] project Oxygen index (%) UL-94 Example 1 29 V-0 Example 2 30 V-0 Example 3 31 V-0 Comparative Example 1 22 V-1 Comparative Example 2 21 V-1

[0052] It can be seen from Table 1 that Examples 1-3 of the present invention have better flame retardant effects than Comparative Examples 1-2.

[0053] Air tightness test is carried out according to ASTM F2471 standard. Tensile strength test is carried out according to GB / T528-2009. Viscosity test is carried out according to GB / T2794-1995.

[0054] Table 2: Air tightness, tensile strength, and viscosity tests.

[0055] project Air tightness(Mpa) Tensile properties(Mpa) Viscosity (mpa·s) Example 1 26 1.56 1031 Example 2 27 1.59 1052 Example 3 26 1.57 1046 Comparative Example 1 18 1.01 650 Comparative Example 2 17 1.04 668

[0056] It can be seen from Table 2 that Examples 1-3 of the present invention have better air tightness, tensile strength and viscosity than Comparative Examples 1-2.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A room temperature / UV dual-curing potting glue, characterized in that: The invention comprises the following components by weight: 1-2 parts by weight of monoacrylate, 0.8-1.3 parts by weight of tripropylene diacrylate, 0.4-0.9 parts by weight of acrylic acid, 14-25 parts by weight of epoxy acrylate, 0.1-0.3 parts by weight of 1-hydroxy-cyclohexyl-phenyl ketone, 0.2-0.3 parts by weight of benzophenone, 2-4 parts by weight of silane-modified polyurethane, and 3-7 parts by weight of modified benzoxazine.

2. The room temperature / UV dual-curing potting adhesive according to claim 1, characterized in that: The preparation method of the silane-modified polyurethane is: (1) Add octamethylcyclotetrasiloxane and 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane to a reaction kettle, add tetramethylammonium hydroxide catalyst thereto in a nitrogen atmosphere, heat to 100-110° C., react for 2-5 hours, then heat to 120-135° C., react for 0.8-1 hour, cool and discharge after reaction, and obtain a double-terminal epoxy silicone oil; (2) adding pentaerythritol methyl silicate and double-ended epoxy silicone oil to an acetone solvent, stirring and mixing, and continuously adding boron trifluoride etherate catalyst thereto, reacting at 65-80° C. for 7-10 hours, and concentrating and washing the solution after the reaction to obtain an intermediate 1; (3) adding 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide and magnolol into a reactor, introducing nitrogen protection, reacting at 75-90° C. for 6-12 hours, cooling after completion, filtering, washing, and obtaining a phosphorus-containing chain extender; (4) Toluene diisocyanate and polyether polyol are added to a reactor, and then dibutyltin dilaurate catalyst is added to carry out prepolymerization under a nitrogen atmosphere at a temperature of 70-90° C. for 2-4 hours. Then, intermediate 1 and a phosphorus-containing chain extender are added and stirred to carry out a chain extension reaction. The reaction is carried out at 40-65° C. for 20-25 minutes. After the reaction is completed, the mixture is cooled naturally to obtain a silane-modified polyurethane.

3. The room temperature / UV dual-curing potting adhesive according to claim 2, characterized in that: The mass ratio of octamethylcyclotetrasiloxane, 1,3-diglycidyloxypropyl-1,1,3,3-tetramethyldisiloxane and tetramethylammonium hydroxide catalyst in (1) is 5.1-5.4:1:0.01-0.

03.

4. The room temperature / UV dual-curing potting adhesive according to claim 2, characterized in that: The mass ratio of pentaerythritol methyl silicate, double-ended epoxy silicone oil and boron trifluoride etherate catalyst in (2) is 1.2-1.6:1:0.02-0.

03.

5. The room temperature / UV dual-curing potting adhesive according to claim 2, characterized in that: The mass ratio of 9,10-dihydro-9-oxa-10-phosphophananthrene-10-oxide to magnolol in (3) is 1.2-1.4:

1.

6. The room temperature / UV dual-curing potting adhesive according to claim 2, characterized in that: The (4) comprises toluene diisocyanate, polyether polyol, dibutyltin dilaurate catalyst, intermediate 1, and phosphorus-containing chain extender 0.8-1.3:1:0.02-0.04:0.4-0.6:0.7-0.

9.

7. The room temperature / UV dual-curing potting adhesive according to claim 1, characterized in that: The preparation method of the modified benzoxazine is as follows: 3-5 parts by weight of 2-amino-4,6-dihydroxypyrimidine, 6-14 parts by weight of an aqueous solution of formaldehyde, and 10-15 parts by weight of a phosphorus-containing chain extender are added to a toluene solvent, fully dissolved, and subjected to a cyclization reaction, reacted at 60-90° C. for 10-15 hours, and then subjected to reduced pressure distillation, washed with deionized water, and the crude product was recrystallized from dichloromethane to obtain the modified benzoxazine.

8. A method for preparing a room temperature / UV dual-curing potting adhesive as claimed in any one of claims 1 to 7, characterized in that: The preparation method of the room temperature / UV dual-curing potting glue is as follows: monoacrylate, tripropylene glycol diacrylate and acrylic acid are added in sequence, the stirring speed is set to 10-12 rpm, the dispersion speed is set to 600 rpm, stirring for 20-35 minutes until the materials are uniformly stirred, 1-hydroxy-cyclohexyl-phenyl ketone and benzophenone are continuously added thereto, the stirring speed is set to 10-14 rpm, the dispersion speed is set to 600-650 rpm, vacuum stirring is performed for 30-40 minutes, and the vacuum reaches -0.09 to -0.08 Mpa to obtain liquid A; silane-modified polyurethane, modified benzoxazine and epoxy acrylic acid are continuously added to liquid A, the stirring speed is set to 8-11 rpm, the dispersion speed is set to 600-660 rpm, vacuum stirring is performed for 30-45 minutes, and the vacuum reaches -0.09 to -0.07 Mpa to obtain the room temperature / UV dual-curing potting glue.