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Hollow-microsphere-filled epoxy resin composite foam material and preparation method thereof

A technology of epoxy resin and composite foam, which is applied in the field of foam materials, can solve the problems of not being able to meet the requirements of light weight, unsatisfactory mechanical properties, and decreased mechanical properties, and achieve the effects of uniform distribution, low cost, and improved mechanical properties

Inactive Publication Date: 2014-07-09
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 (Vff>30%, the density of the material can be effectively reduced, but the decline in mechanical properties is relatively small quick
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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  • Hollow-microsphere-filled epoxy resin composite foam material and preparation method thereof
  • Hollow-microsphere-filled epoxy resin composite foam material and preparation method thereof
  • Hollow-microsphere-filled epoxy resin composite foam material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a method for preparing hollow microsphere-filled epoxy resin composite foam material includes the following steps:

[0027] 1) Modification of hollow glass beads:

[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 pH=5.0. Then, while stirring, add the coupling agent KH550 dropwise to the solution, adjust the concentration of the coupling agent to 0.5 wt%, and continue to stir for 1.0 h 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 beads K46 to it, and then heat the solution in a water bath at 60 ℃ and stir at low speed for 30 minutes. After the reaction, filter with suction and use beads Rinse the beads 3 times with 400 wt% distilled water, and finally dry them in an oven at 100 ℃ to a constant weight;

[0030] 2) Mixing and one-time deaeration: select the...

Embodiment 2

[0043] 1) Modification of hollow glass beads:

[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 pH=6.0. Then, while stirring, add the coupling agent KH570 dropwise to the solution, adjust the concentration of the coupling agent to 0.1 wt%, and continue to stir for 1.5 h to make the coupling agent completely hydrolyzed;

[0045] b. Adjust the hydrolyzed coupling agent solution to pH=5.0, add a certain amount of hollow glass beads K46 to it, and then heat the solution in a water bath at 70 ℃ and stir at low speed for 60 min. After the reaction, filter with suction and use beads Rinse the beads 3 times with 400 wt% distilled water, and finally dry them in an oven at 100 ℃ to a constant weight;

[0046] 2) Mixing and one-time degassing: select hollow polystyrene microspheres with epoxy resin weight of 1.5 wt%, modified hollow glass beads with epoxy resin weight of 30 wt%, and add the above raw...

Embodiment 3

[0050] 1) Modification of hollow glass beads:

[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, while stirring, add the coupling agent KH560 dropwise to the solution, adjust the concentration of the coupling agent to 1.0 wt%, and continue stirring for 2 h to make the coupling agent completely hydrolyzed;

[0052] b. Adjust the hydrolyzed coupling agent solution to pH=6.5, add a certain amount of hollow glass beads K46 to it, and then heat the solution in a water bath at 50 ℃ and stir at low speed for 50 min. After the reaction, filter with suction and use beads Rinse the beads twice with 400 wt% distilled water, and finally dry them in an oven at a temperature of 50 ℃ to a constant weight;

[0053] 2) Mixing and one-time deaeration: select the reactive diluent XY678 with 10 wt% epoxy resin weight, hollow polystyrene microspheres with 6.0 wt% epoxy resin weight, and modified h...

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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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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
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