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Preparation method of composite material based on epoxy resin and phosphazene nanotubes

An epoxy resin and composite material technology, applied in the field of nanomaterials, can solve the problems of high production cost of carbon nanotubes, damage to the structure of carbon nanotubes, inconvenient production process, etc., and achieve controllable morphology, simple method and low cost. Effect

Inactive Publication Date: 2012-07-04
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production cost of carbon nanotubes is high; when added to the resin matrix, it is easy to produce unfavorable phenomena such as agglomeration and uneven dispersion; in addition, because there are no active points on the carbon nanotubes, it must be pretreated before being added to the resin matrix , and this process requires complex multi-step chemical reactions, which brings inconvenience to the production process; according to literature reports, the complex modification process will also damage the structure of carbon nanotubes, making them lose their original excellent properties

Method used

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  • Preparation method of composite material based on epoxy resin and phosphazene nanotubes
  • Preparation method of composite material based on epoxy resin and phosphazene nanotubes
  • Preparation method of composite material based on epoxy resin and phosphazene nanotubes

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Step 1: Under 50W ultrasonic conditions, in a single-necked flask containing 10,000 parts by weight of tetrahydrofuran, add 87 parts by weight of triethylamine, then add 144 parts by weight of 4,4'-dihydroxydiphenyl sulfone and 50 parts by weight of Hexachlorocyclotriphosphazene reacted for 4 hours at 40 degrees Celsius, then added 900 parts by weight of epichlorohydrin, dripped 400 parts by weight of a 30% aqueous sodium hydroxide solution, and reacted in a water bath at 60 degrees Celsius for 4 hours, Wash with tetrahydrofuran, water and ethanol, filter, and dry to obtain epoxy group-modified phosphazene nanotubes with a yield of 83%.

[0025] Step 2 Add 8000 parts by weight of epoxy resin E618 to 6000 parts by weight of acetone, add 11 parts by weight of phosphazene nanotubes modified by epoxy groups, and then add 3000 parts by weight of 4,4'-di Aminodiphenylmethane, dispersed under the condition of ultrasonic 240W for 90 minutes, placed in a vacuum oven at 30 degree...

Embodiment 2

[0027] Step 1: Under 50W ultrasonic conditions, in a single-necked flask containing 20,000 parts by weight of tetrahydrofuran, add 174 parts by weight of triethylamine, then add 288 parts by weight of 4,4'-dihydroxydiphenyl sulfone and 100 parts by weight of Hexachlorocyclotriphosphazene reacted for 4 hours at 40 degrees Celsius, then added 1800 parts by weight of epichlorohydrin, dripped 800 parts by weight of 30% aqueous sodium hydroxide solution, and reacted in a water bath at 60 degrees Celsius for 6 hours, Wash with tetrahydrofuran, water and ethanol, filter, and dry to obtain epoxy group-modified phosphazene nanotubes with a yield of 78%.

[0028] Step 2 Add 8000 parts by weight of epoxy resin E618 to 5000 parts by weight of acetone, add 5.5 parts by weight of phosphazene nanotubes modified by epoxy groups, and then add 3000 parts by weight of 4,4'-bis Aminodiphenylmethane, dispersed under the condition of ultrasonic 240W for 90 minutes, placed in a vacuum oven at 30 deg...

Embodiment 3

[0030] Step 1 Under 50W ultrasonic conditions, in a single-necked flask containing 10000 parts by weight of tetrahydrofuran, add 174 parts by weight of triethylamine, then add 288 parts by weight of 4,4'-dihydroxydiphenyl sulfone and 100 parts by weight of Hexachlorocyclotriphosphazene reacted for 4 hours at 40 degrees Celsius, then added 1800 parts by weight of epichlorohydrin, dripped 800 parts by weight of 30% aqueous sodium hydroxide solution, and reacted for 4 hours in a water bath at 60 degrees Celsius. Wash with tetrahydrofuran, water and ethanol, filter, and dry to obtain epoxy group-modified phosphazene nanotubes with a yield of 81%.

[0031] Step 2 Add 8000 parts by weight of epoxy resin E618 to 8000 parts by weight of acetone, add 55 parts by weight of phosphazene nanotubes modified by epoxy groups, and then add 3000 parts by weight of 4,4'-di Aminodiphenylmethane, dispersed under the condition of ultrasonic 240W for 90 minutes, placed in a vacuum oven at 30 degrees...

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Abstract

The invention relates to a preparation method of a composite material based on epoxy resin and phosphazene nanotubes, which belongs to the technical field of nano materials. The preparation method comprises the following steps: under ultrasonic conditions, adding acid binding agent into tetrahydrofuran; adding 4,4'-dihydroxy-diphenyl sulfone and hexachlorocyclotriphosphazene to carry out condensation reaction; adding epoxy chloropropane; dropwise adding sodium hydroxide water solution; heating to carry out water bath reaction, thereby obtaining epoxide group modified phosphazene nanotubes; adding the epoxide group modified phosphazene nanotubes into the acetone dissolved epoxy resin, adding epoxy resin curing agent, carrying out ultrasonic dispersion, removing acetone in a vacuum drying oven at low temperature, and pouring the mixture into a die; and curing at high temperature to obtain the composite material based on epoxy resin and phosphazene nanotubes. The epoxy resin composite material has the advantages of high shock resistance, tensile property and thermal stability.

Description

technical field [0001] The invention relates to a method in the technical field of nanomaterials, in particular to a method for preparing a composite material based on epoxy resin and phosphazene nanotubes. Background technique [0002] Epoxy resin has excellent heat resistance, electrical insulation, dielectric properties and good bonding properties, so it is widely used in electronic packaging materials, coatings, adhesives and other fields. However, due to the inherent brittleness of epoxy resin, especially its poor impact resistance and tensile properties, its application is limited to a certain extent, so it is very important to improve its mechanical properties. [0003] So far, the methods for improving the mechanical properties of epoxy resin at home and abroad can be roughly divided into two categories according to the size of the modified additives: nanoscale and non-nanoscale. Non-nano-level additives have been studied earlier, such as using rubber for toughening...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L85/02C08G79/04C08G59/50
Inventor 黄小彬顾晓俊魏玮刘维陈奎永
Owner SHANGHAI JIAOTONG UNIV
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