Method for preparing reinforced phenolic aldehyde-epoxy resin composite material by utilizing hollow glass bead-carbon fiber sheet-glass fiber

A technology of hollow glass microspheres and epoxy resin, which is applied in the field of mechanical parts materials, can solve the problems of brittleness of pure phenolic resin, and achieve the effects of uniform dispersion, improved tensile and bending properties, and excellent bending strength

Inactive Publication Date: 2018-12-11
界首市鑫一龙机械设备购销有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure phenolic resin is brittle and is often modified with other polymer compounds.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing reinforced phenolic-epoxy resin composite material with hollow glass microspheres-carbon fiber cloth-glass fiber, is characterized in that, comprises the steps:

[0023] (1) Surface treatment of hollow glass microspheres by silane coupling agent:

[0024] Add a mixed solution of ethanol and water at 1:25 to 5 parts of surface hydroxylated hollow glass microspheres, then add 0.5 parts of silane coupling agent, heat and magnetically stir at 80-83°C for 1 hour, then wash with ethanol while pumping under reduced pressure Filter, then put into 95-105 ℃ oven to heat and dry for 10h;

[0025] (2) Preparation of carbon fiber cloth reinforced phenolic-epoxy resin composites:

[0026] Heat the phenolic resin-epoxy resin solution to 60-63°C, stir evenly, cut the carbon fiber cloth to the size of the mold, soak it in the resin solution for 1 hour, take it out, and place it in a dry and ventilated place to air dry for 10 hours. Preheat in an oven at ℃ for 25...

Embodiment 2

[0035] A method for preparing reinforced phenolic-epoxy resin composite material with hollow glass microspheres-carbon fiber cloth-glass fiber, is characterized in that, comprises the steps:

[0036] (1) Surface treatment of hollow glass microspheres by silane coupling agent:

[0037] Add a mixed solution of ethanol and water at 1:35 to 10 parts of surface hydroxylated hollow glass microspheres, then add 1 part of silane coupling agent, heat and magnetically stir at 80-83°C for 2 hours, then wash with ethanol while pumping under reduced pressure Filter, then put into 95-105 ℃ oven to heat and dry for 12h;

[0038] (2) Preparation of carbon fiber cloth reinforced phenolic-epoxy resin composites:

[0039] Heat the phenolic resin-epoxy resin solution to 60-63°C, stir evenly, cut the carbon fiber cloth to the size of the mold, soak it in the resin solution for 2 hours, take it out, and place it in a dry and ventilated place to air dry for 12 hours, at 104-106 Preheat in an oven ...

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Abstract

The invention discloses a method for preparing a reinforced phenolic aldehyde-epoxy resin composite material by utilizing hollow glass bead-carbon fiber sheet-glass fiber. The method comprises the steps of putting epoxy resin into a heating sleeve, and stirring to form a water type; adding glass fiber modified by a plasma; mechanically stirring and mixing in a stirrer; carrying out ultrasonic treatment in water bath, and fully mixing; adding a hollow glass bead surface-treated by a curing agent, an accelerant and a silane coupling agent, and a carbon fiber sheet reinforced phenolic aldehyde-epoxy resin composite material, and carrying out ultrasonic treatment in water bath; using a vacuum pump for vacuumizing, pouring into a mold, continuously vacuumizing, putting into a drying oven, heating, curing, cooling to the room temperature, and obtaining the reinforced phenolic aldehyde-epoxy resin composite material. A sodium hydroxide solution is adopted for pretreating the surface of the hollow glass bead, so that the hydroxy content of the surface is improved, and the reaction activity of the silane coupling agent and the hollow glass bead is improved; the compression performance, thetensile property and the bending property of the composite material prepared from the modified hollow glass bead can be improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical parts materials, and in particular relates to a method for preparing a reinforced phenolic-epoxy resin composite material by using hollow glass microspheres-carbon fiber cloth-glass fibers. Background technique [0002] Phenolic resin has excellent mechanical properties, chemical properties and thermal properties, ranking among the forefront of various thermosetting resins and plastics. However, pure phenolic resin is brittle and is often modified with other polymer compounds. The phenolic hydroxyl group in the phenolic resin can undergo a ring-opening reaction with the epoxy group in the epoxy resin, and the unreacted methylol group in the phenolic resin can form a hydrogen bond or dehydrate with the hydroxyl group in the epoxy resin, thereby improving the mechanical properties of the phenolic resin. performance. After nearly half a century of research and development, glass fiber has become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L61/06C08K9/06C08K9/02C08K7/28C08K7/06C08K9/00C08K7/14
CPCC08L61/06C08L63/00C08K9/06C08K9/02C08K7/28C08K7/06C08K9/00C08K7/14
Inventor 申慧君
Owner 界首市鑫一龙机械设备购销有限公司
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