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A kind of graphene epoxy resin polymer nanocomposite material and preparation method thereof
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A nano-composite material and olefin epoxy resin technology, which is applied in the field of nano-materials, can solve the problems of low efficiency, complex technical route, poor adhesion of the matrix interface, etc., and achieves less environmental pollution, improved dispersibility, and simple process. Effect
Inactive Publication Date: 2021-06-22
SOUTHWEAT UNIV OF SCI & TECH
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[0009] (1) Use conventional traditional mechanical stirring to improve the dispersion of graphene. In the process of preparing graphene / epoxy resin composite materials, the dispersion of graphene is not good, and the mechanical and electrical properties of graphene to epoxy resin matrix , the enhanced degree of thermal performance is not high
[0010] (2) The technical route of using graphene surface to connect organic groups or graphene and other fillers to synergistically reinforce composite materials is complex and inefficient
[0012] Graphene itself has very excellent mechanical, electrical, thermal and other properties, but it is difficult to show these properties in composite materials, mainly because graphene is easy to agglomerate in the polymer matrix, and the viscosity of the interface with the matrix is not good.
Existing technologies are difficult to improve the dispersion of graphene in matrix materials and reduce the agglomeration of graphene
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preparation example Construction
[0045] Traditional mechanical stirring is often used in the preparation process of the existing graphene / epoxy resin composite material to improve the dispersion of graphene, but the dispersion of graphene in the composite material is not good.
[0046] For the composite material prepared by the existing process, graphene does not enhance the mechanical, electrical and thermal properties of the epoxy resin matrix to a high degree.
[0047] figure 1 , the preparation method of the graphene epoxy resin polymer nanocomposite material that the embodiment of the present invention provides, comprises:
[0048] S101: Graphene Soaking and Planetary Stirring: Add an appropriate amount of absolute ethanol solution to graphene of a specified quality, and pre-soak for more than 6 hours. 2000 rpm;
[0049] S102: mixing and stirring the graphene soaking material: the mixed solution in step S101 was stirred for 30 minutes using ultrasonic waves, the ultrasonic power was 900W, and then pla...
Embodiment 1
[0069] Step 1: Weigh 3g of graphene, add 50ml-80ml of absolute ethanol solution, pre-soak for more than 6 hours, and planetary stir the mixed solution of soaked graphene and absolute ethanol for 30 minutes at a speed of 2000 rpm; The mixed solution was stirred with 900w ultrasonic wave for 30 minutes, and then planetary stirred for 5 minutes at a speed of 2000 rpm.
[0070] Step 2: Weigh 5.25g of epoxy resin, add an appropriate amount of 40ml of acetone solution, and stir ultrasonically for 5 minutes to fully dissolve the epoxy resin;
[0071] Step 3: Mix the solution of step 1 and step 2, and use 900w power to ultrasonically stir for 30 minutes, and then use planetary stirring for 5 minutes. Then add 0.16g of KH-570 solution, and planetary stirring for 5 minutes, then place part of the solution in a blast drying oven to evaporate most of the solution, and then place it in a vacuum drying oven to continue to mix the solvent, the temperature is 90 ° C, and dry The time is 10 h...
Embodiment 2
[0073] The operation method is the same as Example 1, except that the graphene content is 2wt%, that is, 2g of graphene, 6g of epoxy resin, and 2g of curing agent are weighed.
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Abstract
The invention belongs to the technical field of nanomaterials, and discloses a graphene epoxy resin polymer nanocomposite material and a preparation method. The graphene / epoxy resin composite material is prepared by an ultrasonic blending method, and the agglomeration of graphene is reduced by ultrasonic vibration. , improve the dispersion of graphene in the epoxy resin matrix, so that the uniformly dispersed graphene can better enhance the mechanical, electrical, thermal and other properties of the epoxy resin matrix. The solvent used in the present invention is absolute ethanol and acetone, which has little environmental pollution; the composite material is prepared by the ultrasonic blending method, and the process is simple; the ultrasonic vibration power is determined, and the dispersion of graphene in the epoxy resin matrix can be better improved Properties; composite materials prepared by this process have better electrical conductivity and better thermal expansion properties.
Description
technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a graphene epoxy resin polymer nanocomposite material and a preparation method thereof. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] In the existing preparation process of graphene / epoxy resin composite materials, the common preparation method is the solution blending method. Among them, the dispersion of graphene in the matrix is an important factor affecting the material properties. The existing technologies to solve this problem mainly contain the following methods: [0004] Traditional mechanical stirring to improve the dispersion of graphene; [0005] The method of connecting organic groups on the surface of graphene reduces the agglomeration of graphene in the matrix; [0006] Graphene synergistically enhances the properties of the matrix material with other fillers. ...
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