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Process for preparing modified epoxy adhesive agent with nano powder

An epoxy adhesive and nano-powder technology, applied in the direction of adhesive, epoxy resin glue, adhesive type, etc., can solve the problems of complex process, environmental pollution, high cost, and achieve simple modification process, good comprehensive performance, easy to use effect of operation

Inactive Publication Date: 2005-11-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above methods require related equipment, solvents, etc., chemical reactions occur, the process is complex, and the cost is high, resulting in environmental pollution
[0007] There are also reports on the introduction of inorganic nanoparticles into epoxy resins to improve certain properties, but these are all modifications to epoxy resin powder coatings, and there is no patent report to add inorganic nanoparticles to epoxy resin adhesives to improve properties, especially in the modification of the bond strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 0.3Kg of the A component in the German Henkel epoxy adhesive (Pattex® Henkel Baide), add 6g of nano-SiO 2 , uniform mechanical mixing, add 0.3Kg of component B, mix evenly, wash and dry the steel sheet polished by 150# metallographic sandpaper with acetone, and apply the nanometer-added and uniformly mixed adhesive on the two steel sheets. The sheets were bonded together and cured in an oven at 50°C for 1 hour. The pull-out strength is 3.3 times higher than that of the unmodified one.

Embodiment 2

[0019] Weigh 0.4Kg of component B in Guanwei® Super Epoxy EPO-530 epoxy adhesive, add 8g of nano-Al 2 o 3 , mechanically stirred and mixed evenly, then added 0.4Kg of component A, the process was the same as in Example 1. Its shear strength is doubled compared with the unmodified one.

Embodiment 3

[0021] 2g nano-Al 2 o 3 Put in 140g of acetone, ultrasonically oscillate for 30-60 minutes, and then mix with 0.2Kg of component A in Guanwei® SuperEpoxy EPO-530 epoxy adhesive, and ultrasonically oscillate for 10 minutes, evaporate the solvent at 70°C, and then add 0.2Kg of A B component, the process is the same as Example 1. Its shear strength is 60% higher than that of unmodified.

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PUM

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Abstract

A nanoparticles modified epoxy adhesive for ceramics, metals and high-molecular materials is proportionally prepared from the dual-component epoxy adhesive and nanoparticles through mechanical mixing or solution mixing.

Description

technical field [0001] The invention relates to a preparation method of nano powder modified epoxy adhesive. Background technique [0002] The application of adhesives, especially epoxy adhesives, has been extended to many fields, providing an effective way for all walks of life to simplify processes, save energy, reduce costs, and improve economic benefits, and is increasingly replacing mechanical connections. However, general adhesives have low bonding strength and can only meet the needs of general bonding strength in daily life and engineering. [0003] Epoxy adhesives with epoxy resin as the main component have excellent mechanical properties, water resistance, aging resistance, chemical medium resistance, good acid and alkali resistance, and good bonding performance, so they are suitable for epoxy resins. The modification of the adhesive mostly focuses on improving the brittleness of the epoxy resin adhesive, toughening it (Chinese patent 03135153.0, 03117022.6, 03112...

Claims

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Application Information

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IPC IPC(8): C09J163/00
Inventor 凌国平翟兰兰栾飞毛启楠郑一方
Owner ZHEJIANG UNIV
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