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A hollow microsphere filled epoxy resin composite foam material and preparation method thereof

An epoxy resin and composite foam technology, which is applied in the field of foam materials, can solve the problems of not meeting the requirements of light weight, unsatisfactory mechanical properties, and decreased mechanical properties, and achieves the effects of uniform distribution, low cost, and improved mechanical properties.

Inactive Publication Date: 2016-01-20
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Huang Wenlin, "Preparation and Characterization of Epoxy Lightweight Composite Materials Filled with Polymer Hollow Microspheres", Zhejiang University, 2006 Master's Dissertation, when the volume fraction of microspheres is small (V f f When >30%, the density of the material can be effectively reduced, but the mechanical properties decline rapidly
The syntactic foam material filled with hollow glass microspheres has excellent mechanical properties, but the density of the material is relatively high and the cost is high; the syntactic foam material prepared only with polystyrene microspheres, although the amount of microbeads is small and the cost is low, but Unsatisfactory mechanical properties

Method used

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  • A hollow microsphere filled epoxy resin composite foam material and preparation method thereof
  • A hollow microsphere filled epoxy resin composite foam material and preparation method thereof
  • A hollow microsphere filled epoxy resin composite foam material and preparation method thereof

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Effect test

Embodiment 1

[0026] like figure 1 Shown, a kind of preparation method of hollow microsphere filling epoxy resin composite foam material, it comprises the steps:

[0027] 1) Modification of hollow glass microspheres:

[0028] a. First add a small amount of ethanol to a certain amount of water, and adjust the pH of the solution with glacial acetic acid to make the pH=5.0. Then, dropwise add coupling agent KH550 to the solution while stirring, adjust the concentration of coupling agent to 0.5wt%, and continue stirring for 1.0h to completely hydrolyze the coupling agent;

[0029] b. Adjust the hydrolyzed coupling agent solution to pH = 5.5, add a certain amount of hollow glass microspheres K46 to it, then heat the solution in a water bath at 60°C and stir at a low speed for 30 minutes. 400wt% distilled water rinsed the microbeads 3 times, and finally dried in an oven at a temperature of 100°C to constant weight;

[0030] 2) Mixing and primary defoaming: choose reactive diluent XY678 (neopen...

Embodiment 2

[0043] 1) Modification of hollow glass microspheres:

[0044] a. First add a small amount of ethanol to a certain amount of water, and adjust the pH of the solution with glacial acetic acid to make the pH=6.0. Then add coupling agent KH570 dropwise to the solution while stirring, adjust the concentration of coupling agent to 0.1wt%, and continue stirring for 1.5h to completely hydrolyze the coupling agent;

[0045] b. Adjust the hydrolyzed coupling agent solution to pH = 5.0, add a certain amount of hollow glass microspheres K46 to it, then heat the solution in a water bath at a temperature of 70°C and stir at a low speed for 60 minutes. 400wt% distilled water rinsed the microbeads 3 times, and finally dried in an oven at a temperature of 100°C to constant weight;

[0046] 2) Mixing and primary defoaming: select hollow polystyrene microspheres with 1.5wt% epoxy resin weight and modified hollow glass microspheres with 30wt% epoxy resin weight, and add the above raw materials int...

Embodiment 3

[0050] 1) Modification of hollow glass microspheres:

[0051] a. First add a small amount of ethanol to a certain amount of water, and adjust the pH of the solution with glacial acetic acid to make pH = 4.0. Then, dropwise add coupling agent KH560 to the solution while stirring, adjust the concentration of the coupling agent to 1.0wt%, and continue stirring for 2 hours to completely hydrolyze the coupling agent;

[0052] b. Adjust the hydrolyzed coupling agent solution to pH = 6.5, add a certain amount of hollow glass microspheres K46 to it, then heat the solution in a water bath at a temperature of 50°C and stir at a low speed for 50 minutes. 400wt% distilled water rinsed the microbeads twice, and finally dried in an oven at a temperature of 50°C to constant weight;

[0053] 2) Mixing and primary defoaming: choose active diluent XY678 with 10wt% epoxy resin weight, hollow polystyrene microspheres with 6.0wt% epoxy resin weight, and modified hollow glass microspheres with 40w...

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Abstract

The invention discloses a hollow-microsphere-filled epoxy resin composite foam material and a preparation method thereof, belonging to the field of foam materials. The composite foam material comprises hollow polystyrene microspheres, hollow glass microspheres, an epoxy resin, a curing agent, a diluter and a coupling agent. The invention also discloses a preparation method of the composite foam material, which is characterized by comprising the following steps: 1) hollow glass microsphere modification; 2) mixing and primary defoaming; and 3) secondary defoaming and curing formation. The composite foam material has the characteristics of higher compression strength, lower density, excellent properties, lower cost, simple preparation process, uniform distribution of the filled microspheres, and the like, and provides a new option for deep-sea buoyancy materials.

Description

technical field [0001] The invention relates to a hollow microsphere-filled epoxy resin composite foam material and a preparation method thereof, belonging to the field of foam materials. Background technique [0002] Hollow microsphere-filled resin-based composite foam refers to a foam material prepared by using polymer as a binder matrix, filling hollow microspheres and other hollow particles, mixing, molding, and curing. This type of material has high compressive strength, low density, low water absorption, corrosion resistance, insulation, heat insulation, flame retardant, sound insulation and many other excellent qualities and good machining performance. It has been used in many fields such as aerospace, ocean and national defense. It has been widely used and has been widely concerned and valued by people. [0003] Compared with the chemical foaming material made by adding foaming agent to the base material through chemical foaming, the microsphere-filled composite foa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L25/06C08K9/06C08K7/28B29C39/42
Inventor 葛曷一金鑫王平王冬至柳华实
Owner UNIV OF JINAN