Preparation method of composite epoxy resin material

Abstract

The invention discloses a preparation method of a composite epoxy resin material, and relates to the technical field of epoxy resin material preparation, the preparation method comprises the following steps: a, mixing a heat storage material and an adsorption material, and stirring in a stirring device I; b, sequentially putting an antioxidant, a curing agent, a flexibilizer, a thermal insulation material, an accelerant, reinforced fibers, composite color-changing microcapsules and epoxy resin into a stirring device II, and stirring; c, a mixture obtained after stirring in the first stirring device in the step a is put into the second stirring device in the step b to be stirred; and d, curing the composite epoxy resin material obtained in the stirring device II in the step c. Heat can be stored by adding the ethyl palmitate heat storage material into the epoxy resin material, furniture made of the composite epoxy resin material can store heat generated by an air conditioner when the electric charge price is low at night, then heat can be released to the outside for a longer time in the daytime, and then the expenditure of the electric charge is reduced.

Description

Technical Field

[0001] This invention relates to the field of epoxy resin material preparation technology, specifically to a method for preparing a composite epoxy resin material. Background Technology

[0002] Epoxy resin materials are widely used in household furniture. Generally, epoxy resin materials do not have special functions. However, adding heat storage materials to epoxy resin materials in household furniture can store heat or cold. In cold weather, when electricity prices are low at night, it can store heat and release heat during the day when electricity prices are high, which can reduce people's electricity bills. Moreover, heat storage epoxy resin furniture can be placed in various corners of the room, thereby regulating the indoor temperature more evenly.

[0003] The shortcomings of existing methods for preparing composite epoxy resins are:

[0004] 1. The prior art US20170114210A1 discloses an epoxy resin composite material, which does not have the function of storing heat. Furniture made of this material cannot regulate the indoor temperature. Therefore, there is a need for a method to prepare a composite epoxy resin material that can store heat and regulate the indoor temperature to solve this problem.

[0005] 2. Existing technology US5439746A discloses epoxy resin-based composite materials. If phase change thermal storage materials are added inside this technology, the thermal storage materials are easy to precipitate out of the composite epoxy resin when the temperature of the thermal storage materials rises and liquefies, which affects the performance of the product. Therefore, a method for preparing a composite epoxy resin material that can adsorb thermal storage materials is needed to solve this problem.

[0006] 3. The prior art US20150299457A1 discloses epoxy resin composite materials. If phase change heat storage materials are added to this technology, the furniture made from it stores heat at night in the home, but the stored heat is easily released into the indoor air in a short time during the day, resulting in a short time for regulating indoor temperature. Therefore, a method for preparing a composite epoxy resin material with heat storage function and reducing the rate at which the heat storage material releases heat is needed to solve this problem.

[0007] 4. Existing technology CN115490996A discloses an epoxy resin composite material and its processing method. This technology does not have the function of changing color with temperature. If a heat storage material is added to this epoxy resin material, people cannot intuitively know the temperature of the heat storage material. Therefore, it is not convenient for people to decide whether to turn on the air conditioner based on the amount of heat stored in the heat storage material. This leads to people choosing the wrong time to turn on the air conditioner, which makes it difficult to save energy. Therefore, there is a need for a method to prepare a composite epoxy resin material with heat storage function and convenient for people to know the temperature of the heat storage material to solve this problem. Summary of the Invention

[0008] One objective of this application is to provide a method for preparing composite epoxy resin materials, which can solve the technical problems raised in the prior art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing a composite epoxy resin material, the method comprising the following steps:

[0010] a: Mix the heat storage material and the adsorption material and put them into a stirring device with heating function for stirring. The stirring temperature is 35℃ and the stirring time is 10 minutes.

[0011] b: Then, antioxidant, curing agent, toughening agent, heat insulation material, accelerator, reinforcing fiber, composite color-changing microcapsule and epoxy resin are put into the second stirring device in sequence and stirred at a temperature of 13°C for 10 minutes.

[0012] c: Then, the mixture obtained after stirring in stirring device one in step a is put into stirring device two in step b for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0013] d: Then, the composite epoxy resin material obtained from the stirring device in step c is placed into the mold, and then the mold is placed in a 27°C heating box to cure the composite epoxy resin material.

[0014] Preferably, the heat storage material in step a is one or more of ethyl palmitate and butyl stearate.

[0015] Preferably, the adsorbent in step a is one or more of bentonite and activated carbon particles.

[0016] Preferably, the antioxidant in step b is one of triphenyl phosphite and tris[2,4-di-tert-butylphenyl]phosphite.

[0017] Preferably, the curing agent in step b is one of ethylenediamine, diethylenetriamine, and m-phenylenediamine.

[0018] Preferably, the toughening agent in step b is one of carboxyl-terminated butadiene-acrylonitrile rubber, polyamide resin, polyester resin, and polyimide resin.

[0019] Preferably, the heat insulation material in step b is one of aluminum silicate fiber and alumina fiber, and the reinforcing fiber in step b is glass fiber.

[0020] Preferably, the accelerator in step b is one of triethylamine, triethanolamine, tetramethylammonium chloride, and tetrabutylammonium bromide.

[0021] Preferably, the composite color-changing microcapsules in step b are a mixture of equal masses of color-changing microcapsules with color-changing temperatures of 21°C and 31°C.

[0022] Preferably, the raw materials for preparing the composite epoxy resin material include, by weight, 30-50 parts of heat storage material, 30-50 parts of adsorption material, 3-5 parts of antioxidant, 3-5 parts of curing agent, 3-5 parts of toughening agent, 10-20 parts of heat insulation material, 3-5 parts of accelerator, 5-10 parts of reinforcing fiber, 10-15 parts of composite color-changing microcapsules, and 80-100 parts of epoxy resin.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention stores heat by adding ethyl palmitate heat storage material to epoxy resin material, which can continuously release heat to the outside when the temperature drops, reducing external temperature fluctuations. Furniture made of this composite epoxy resin material can store the heat generated by air conditioning when electricity prices are low at night, and then release heat to the outside for a longer period of time during the day, reducing the rate of heat loss and waste, thereby reducing electricity costs.

[0025] 2. This invention reduces the loss of the heat storage material during liquefaction by setting activated carbon particles as the adsorbent material, thereby preventing the phase change heat storage material from precipitating out of the composite epoxy resin material during liquefaction and increasing the functional stability of the composite epoxy resin material.

[0026] 3. By incorporating aluminum silicate fiber as a heat-insulating material, this invention can reduce the rate of heat loss from the heat storage material in the composite epoxy resin material, thereby enabling the heat storage material to maintain a stable temperature for a longer period of time. In winter, furniture made of composite epoxy resin material can maintain indoor warmth for a longer period of time, and in summer, furniture made of composite epoxy resin material can store the cooling energy generated by air conditioning and release it into the room, maintaining indoor coolness for a longer period of time.

[0027] 4. This invention uses color-changing microcapsules to change color when the temperature changes, allowing people to more intuitively understand the temperature of epoxy resin furniture and conveniently turn on the air conditioner according to the temperature of the epoxy resin furniture. Attached Figure Description

[0028] Figure 1 This is a flowchart of the preparation method of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1 A method for preparing a composite epoxy resin material, comprising the following steps:

[0031] a: Mix the heat storage material and the adsorption material and put them into a stirring device with heating function for stirring. The stirring temperature is 35℃ and the stirring time is 10 minutes.

[0032] b: Then, antioxidant, curing agent, toughening agent, heat insulation material, accelerator, reinforcing fiber, composite color-changing microcapsule and epoxy resin are put into the second stirring device in sequence and stirred at a temperature of 13°C for 10 minutes.

[0033] c: Then, the mixture obtained after stirring in stirring device one in step a is put into stirring device two in step b for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0034] d: Then, the composite epoxy resin material obtained from the stirring device in step c is placed into the mold, and then the mold is placed in a 27°C heating box to cure the composite epoxy resin material.

[0035] The heat storage material in step a is one or more of ethyl palmitate and butyl stearate.

[0036] The adsorbent in step a is one or more of bentonite and activated carbon particles.

[0037] The antioxidant in step b is one of triphenyl phosphite and tris[2,4-di-tert-butylphenyl]phosphite.

[0038] The curing agent in step b is one of ethylenediamine, diethylenetriamine, and m-phenylenediamine.

[0039] In step b, the toughening agent is one of the following: carboxyl-terminated butadiene-acrylonitrile rubber, polyamide resin, polyester resin, and polyimide resin.

[0040] In step b, the thermal insulation material is either aluminum silicate fiber or alumina fiber, and the reinforcing fiber in step b is glass fiber.

[0041] The accelerator in step b is one of triethylamine, triethanolamine, tetramethylammonium chloride, and tetrabutylammonium bromide.

[0042] In step b, the composite color-changing microcapsules are a mixture of equal masses of color-changing microcapsules with color-changing temperatures of 21℃ and 31℃.

[0043] The raw materials for preparing composite epoxy resin materials include, by weight, 30-50 parts of heat storage material, 30-50 parts of adsorbent material, 3-5 parts of antioxidant, 3-5 parts of curing agent, 3-5 parts of toughening agent, 10-20 parts of heat insulation material, 3-5 parts of accelerator, 5-10 parts of reinforcing fiber, 10-15 parts of composite color-changing microcapsules, and 80-100 parts of epoxy resin.

[0044] Example 1:

[0045] 1. Mix 30 parts of thermal storage material ethyl palmitate and 30 parts of adsorption material activated carbon granules and put them into a stirring device with heating function for stirring. The stirring temperature is 35℃ and the stirring time is 10 minutes.

[0046] 2. Then, 4 parts of the antioxidant triphenyl phosphite, 4 parts of the curing agent ethylenediamine, 4 parts of the toughening agent polyamide resin, 15 parts of the thermal insulation material aluminum silicate fiber, 4 parts of the accelerator triethylamine, 8 parts of the reinforcing fiber glass fiber, 12 parts of the color-changing microcapsules with two color-changing temperatures of 21℃ and 31℃, and 90 parts of epoxy resin are mixed in equal mass and placed into the stirring device 2 for stirring. The stirring temperature is 13℃ and the stirring time is 10 minutes.

[0047] 3. Then, put the mixture obtained after stirring in stirring device 1 in step 1 into stirring device 2 in step 2 for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0048] Fourth: Then, put the composite epoxy resin material obtained from the stirring device in step three into the mold, and then put the mold into a 27°C heating box to cure the composite epoxy resin material.

[0049] Example 2:

[0050] 1. Place 30 portions of activated carbon granules, the adsorbent material, into a stirring device with a heating function and stir for 10 minutes at a temperature of 35°C.

[0051] 2. Then, 4 parts of the antioxidant triphenyl phosphite, 4 parts of the curing agent ethylenediamine, 4 parts of the toughening agent polyamide resin, 15 parts of the thermal insulation material aluminum silicate fiber, 4 parts of the accelerator triethylamine, 8 parts of the reinforcing fiber glass fiber, 12 parts of the color-changing microcapsules with two color-changing temperatures of 21℃ and 31℃, and 90 parts of epoxy resin are mixed in equal mass and placed into the stirring device 2 for stirring. The stirring temperature is 13℃ and the stirring time is 10 minutes.

[0052] 3. Then, put the mixture obtained after stirring in stirring device 1 in step 1 into stirring device 2 in step 2 for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0053] Fourth: Then, put the composite epoxy resin material obtained from the stirring device in step three into the mold, and then put the mold into a 27°C heating box to cure the composite epoxy resin material.

[0054] Example 3:

[0055] 1. Place 30 parts of thermal storage material ethyl palmitate into a stirring device with heating function and stir for 10 minutes at a stirring temperature of 35°C.

[0056] 2. Then, 4 parts of the antioxidant triphenyl phosphite, 4 parts of the curing agent ethylenediamine, 4 parts of the toughening agent polyamide resin, 15 parts of the thermal insulation material aluminum silicate fiber, 4 parts of the accelerator triethylamine, 8 parts of the reinforcing fiber glass fiber, 12 parts of the color-changing microcapsules with two color-changing temperatures of 21℃ and 31℃, and 90 parts of epoxy resin are mixed in equal mass and placed into the stirring device 2 for stirring. The stirring temperature is 13℃ and the stirring time is 10 minutes.

[0057] 3. Then, put the mixture obtained after stirring in stirring device 1 in step 1 into stirring device 2 in step 2 for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0058] Fourth: Then, put the composite epoxy resin material obtained from the stirring device in step three into the mold, and then put the mold into a 27°C heating box to cure the composite epoxy resin material.

[0059] Example 4:

[0060] 1. Mix 30 parts of thermal storage material ethyl palmitate and 30 parts of adsorption material activated carbon granules and put them into a stirring device with heating function for stirring. The stirring temperature is 35℃ and the stirring time is 10 minutes.

[0061] 2. Then, 4 parts of antioxidant triphenyl phosphite, 4 parts of curing agent ethylenediamine, 4 parts of toughening agent polyamide resin, 4 parts of accelerator triethylamine, 8 parts of reinforcing fiber glass fiber, 12 parts of color-changing microcapsules with two color-changing temperatures of 21℃ and 31℃, and 90 parts of epoxy resin are mixed in equal mass and placed into stirring device 2 for stirring. The stirring temperature is 13℃ and the stirring time is 10 minutes.

[0062] 3. Then, put the mixture obtained after stirring in stirring device 1 in step 1 into stirring device 2 in step 2 for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0063] Fourth: Then, put the composite epoxy resin material obtained from the stirring device in step three into the mold, and then put the mold into a 27°C heating box to cure the composite epoxy resin material.

[0064] Example 5:

[0065] 1. Mix 30 parts of thermal storage material ethyl palmitate and 30 parts of adsorption material activated carbon granules and put them into a stirring device with heating function for stirring. The stirring temperature is 35℃ and the stirring time is 10 minutes.

[0066] 2. Then, 4 parts of the antioxidant triphenyl phosphite, 4 parts of the curing agent ethylenediamine, 4 parts of the toughening agent polyamide resin, 15 parts of the thermal insulation material aluminum silicate fiber, 4 parts of the accelerator triethylamine, 12 parts of the color-changing microcapsules with two color-changing temperatures of 21℃ and 31℃, and 90 parts of epoxy resin are mixed in equal mass and placed into the stirring device 2 for stirring. The stirring temperature is 13℃ and the stirring time is 10 minutes.

[0067] 3. Then, put the mixture obtained after stirring in stirring device 1 in step 1 into stirring device 2 in step 2 for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0068] Fourth: Then, put the composite epoxy resin material obtained from the stirring device in step three into the mold, and then put the mold into a 27°C heating box to cure the composite epoxy resin material.

[0069] Example 6:

[0070] 1. Mix 30 parts of thermal storage material ethyl palmitate and 30 parts of adsorption material activated carbon granules and put them into a stirring device with heating function for stirring. The stirring temperature is 35℃ and the stirring time is 10 minutes.

[0071] 2. Then, 4 parts of antioxidant triphenyl phosphite, 4 parts of curing agent ethylenediamine, 4 parts of toughening agent polyamide resin, 15 parts of thermal insulation material aluminum silicate fiber, 4 parts of accelerator triethylamine, 8 parts of reinforcing fiber glass fiber and 90 parts of epoxy resin are put into the second mixing device in sequence and stirred at a temperature of 13°C for 10 minutes.

[0072] 3. Then, put the mixture obtained after stirring in stirring device 1 in step 1 into stirring device 2 in step 2 for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0073] Fourth: Then, put the composite epoxy resin material obtained from the stirring device in step three into the mold, and then put the mold into a 27°C heating box to cure the composite epoxy resin material.

[0074] Example 7:

[0075] 1. Mix 30 parts of thermal storage material ethyl palmitate and 30 parts of adsorption material activated carbon granules and put them into a stirring device with heating function for stirring. The stirring temperature is 35℃ and the stirring time is 10 minutes.

[0076] 2. Then, 4 parts of the antioxidant triphenyl phosphite, 4 parts of the curing agent ethylenediamine, 4 parts of the toughening agent polyamide resin, 4 parts of the accelerator triethylamine, 12 parts of the color-changing microcapsules with two color-changing temperatures of 21℃ and 31℃, and 90 parts of epoxy resin are mixed in equal mass and placed into the stirring device 2 for stirring. The stirring temperature is 13℃ and the stirring time is 10 minutes.

[0077] 3. Then, put the mixture obtained after stirring in stirring device 1 in step 1 into stirring device 2 in step 2 for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes.

[0078] Fourth: Then, put the composite epoxy resin material obtained from the stirring device in step three into the mold, and then put the mold into a 27°C heating box to cure the composite epoxy resin material.

[0079] Performance testing:

[0080] 1. Heat storage capacity test: In an environment of 12°C, the products of each embodiment were placed in multiple transparent glass boxes of the same size and stored separately. Then, the temperature in the glass boxes was heated to 35°C using a heating rod and maintained at 35°C for 2 hours. After heating was stopped, the temperature in each glass box was measured at each time point in the following two hours. The product was observed to change color before and after heating, and the presence of liquid ester on the product surface was also observed.

[0081] Test data of each embodiment under the same test conditions

[0082]

[0083] Experimental data shows that adding ethyl palmitate as a heat storage material to epoxy resin can store heat, allowing it to continuously release heat to the outside world when the temperature drops, thus reducing external temperature fluctuations. The addition of activated carbon particles as an adsorbent material allows the phase change heat storage material to be adsorbed, reducing heat loss during liquefaction. The inclusion of aluminum silicate fiber as an insulating material slows down the heat loss rate of the heat storage material in the composite epoxy resin, enabling it to maintain a stable temperature for a longer period. In winter, furniture made from this composite epoxy resin material can store heat at night when electricity prices are low, and then release it to the outside world for a longer period during the day, reducing heat loss and waste, thereby reducing electricity costs. Furthermore, the inclusion of color-changing microcapsules allows the furniture to change color with temperature changes, providing a more intuitive understanding of the epoxy resin furniture's temperature and facilitating the use of air conditioning accordingly.

[0084] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the rights involved.

Claims

1. A method for preparing a composite epoxy resin material, characterized in that: The preparation method of the composite epoxy resin material includes the following steps: a: Mix the heat storage material and the adsorption material and put them into a stirring device with heating function for stirring. The stirring temperature is 35℃ and the stirring time is 10 minutes. b: Then, antioxidant, curing agent, toughening agent, heat insulation material, accelerator, reinforcing fiber, composite color-changing microcapsule and epoxy resin are put into the second stirring device in sequence and stirred at a temperature of 13°C for 10 minutes. c: Then, the mixture obtained after stirring in stirring device one in step a is put into stirring device two in step b for stirring. The stirring temperature is 27°C and the stirring time is 3 minutes. d: Then, the composite epoxy resin material obtained from the stirring device in step c is placed into the mold, and then the mold is placed in a 27°C heating box to cure the composite epoxy resin material.

2. The method for preparing a composite epoxy resin material according to claim 1, characterized in that: The heat storage material in step a is one or more of ethyl palmitate and butyl stearate.

3. The method for preparing a composite epoxy resin material according to claim 1, characterized in that: The adsorbent in step a is one or more of bentonite and activated carbon particles.

4. The method for preparing a composite epoxy resin material according to claim 1, characterized in that: The antioxidant in step b is one of triphenyl phosphite and tris[2,4-di-tert-butylphenyl]phosphite.

5. The method for preparing a composite epoxy resin material according to claim 1, characterized in that: The curing agent in step b is one of ethylenediamine, diethylenetriamine, and m-phenylenediamine.

6. A method for preparing a composite epoxy resin material according to any one of claims 1-5, characterized in that: In step b, the toughening agent is one of carboxyl-terminated nitrile rubber, polyamide resin, polyester resin, and polyimide resin.

7. The method for preparing a composite epoxy resin material according to claim 1, characterized in that: In step b, the thermal insulation material is either aluminum silicate fiber or alumina fiber, and the reinforcing fiber is glass fiber.

8. The method for preparing a composite epoxy resin material according to claim 1, characterized in that: The accelerator in step b is one of triethylamine, triethanolamine, tetramethylammonium chloride, and tetrabutylammonium bromide.

9. The method for preparing a composite epoxy resin material according to claim 1, characterized in that: In step b, the composite color-changing microcapsules are a mixture of equal masses of color-changing microcapsules with color-changing temperatures of 21°C and 31°C.

10. The method for preparing a composite epoxy resin material according to claim 1, characterized in that: The raw materials for preparing the composite epoxy resin material include, by weight, 30-50 parts of heat storage material, 30-50 parts of adsorption material, 3-5 parts of antioxidant, 3-5 parts of curing agent, 3-5 parts of toughening agent, 10-20 parts of heat insulation material, 3-5 parts of accelerator, 5-10 parts of reinforcing fiber, 10-15 parts of composite color-changing microcapsules, and 80-100 parts of epoxy resin.

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