Thermosetting resin able to realize high temperature heating and curing in high frequency magnetic field and preparation method thereof

A high-frequency magnetic field and thermosetting technology, which is applied in the field of thermosetting resin systems, can solve the problems of uneven material properties, difficult processing and molding, and low curing efficiency, and achieve the effects of short curing time, controllability, and elimination of internal stress

Inactive Publication Date: 2012-04-11
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional thermosetting resin curing has disadvantages such as too strict ratio, difficult processing and molding, low curing efficiency, long curing time, and uneven material properties due to uneven heating.

Method used

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  • Thermosetting resin able to realize high temperature heating and curing in high frequency magnetic field and preparation method thereof
  • Thermosetting resin able to realize high temperature heating and curing in high frequency magnetic field and preparation method thereof
  • Thermosetting resin able to realize high temperature heating and curing in high frequency magnetic field and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1100

[0033] Example 1100 parts by weight of thermosetting epoxy resin E-51 and 5 parts by weight of 2-phenylimidazole add 1 part of Fe with a magnetic content of 71.40%. 3 o 4 magnetic nanospheres.

[0034] 11.6584g of epoxy resin E-51 is added with Fe with a magnetic content of 71.40% 3 o 4 1.0336g of magnetic particles and 0.5706g of 2-phenylimidazole are mixed evenly and heated in an alternating magnetic field. Under the experimental conditions of SPG-06A series high-frequency induction heating equipment I=6.6A, f=150KHz, relying on magnetic microspheres The resulting thermally cured resin was used to measure the internal temperature of the resin system over time with a kerosene thermometer.

[0035] image 3 It is the curing time chart of the thermosetting resin system of this embodiment.

Embodiment 2100

[0036] Example 2 Add 2 parts of Fe with a magnetic content of 71.40% to 100 parts by weight of epoxy resin E-51 and 5 parts by weight of 2-phenylimidazole 3 o 4 Special magnetic particles.

[0037] 11.0838g of epoxy resin E-51 was added Fe with a magnetic content of 71.40% 3 o 4 1.4478g of magnetic particles and 0.5610g of 2-methylimidazole are mixed evenly and heated in an alternating magnetic field. Under the experimental conditions of SPG-06A series high-frequency induction heating equipment I=6.6A, f=150KHz, relying on magnetic microspheres The resulting heat-cured epoxy resin was tested with a kerosene thermometer to measure the internal temperature of the resin as a function of time.

[0038] Figure 4 It is the curing time chart of the thermosetting resin system of this embodiment.

Embodiment 3100

[0039] Example 3 Add 3 parts of Fe with a magnetic content of 71.40% to 100 parts by weight of epoxy resin E-51 and 5 parts by weight of 2-phenylimidazole3 o 4 Special magnetic particles.

[0040] 9.2762g of epoxy resin E-51 is added with Fe with magnetic content of 71.40% 3 o 4 Magnetic particles (the active ingredient of magnetic particles accounts for 10%) and 0.4638g of 2-phenylimidazole are mixed evenly and then heated in an alternating magnetic field. In the SPG-06A series of high-frequency induction heating equipment I=6.6A, f=150KHz Under the experimental conditions, the heat-cured resin produced by magnetic microspheres was used to test the internal temperature of the resin over time with a kerosene thermometer.

[0041] Figure 5 It is the curing time chart of the thermosetting resin system of this embodiment.

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Abstract

The invention relates to thermosetting resin able to realize high temperature heating and curing in high frequency magnetic field and a preparation method thereof. The method of the invention is technically characterized by: adopting thermosetting resin as the matrix and special Fe3O4 magnetic particles as filler, placing the resin system in a high frequency magnetic field generated by alternating current, making use of the heat generated from the Neel relaxation effect of the special Fe3O4 magnetic particles to cure thermosetting resin. The heating and curing technology in a high frequency magnetic field of in the invention realizes high efficiency curing of thermosetting resin. In the invention, by adjusting the mass ratio of special Fe3O4 magnetic particles in a thermosetting resin system, an optimum proportion of a heat production rule and the thermosetting resin curing system of the technology can be determined.

Description

technical field [0001] The invention relates to a thermosetting resin that can be heated and cured at a medium-high temperature in a high-frequency magnetic field and a preparation method thereof, which can be heated and cured at a medium-high temperature in a high-frequency magnetic field to form Fe 3 o 4 Thermosetting resin system with magnetic particles as filler. Background technique [0002] The traditional curing of resin is mostly heat curing. The temperature is transmitted from the surface of the resin to the inside of the resin, which causes the internal temperature of the resin to be lower than the external temperature. The external resin is cured first, and the internal resin is cured later. Therefore, internal stress will be generated in the product, and finally affect product performance. Moreover, traditional heat curing is highly toxic, slow to cure, difficult to process and shape, and is prone to uneven material properties due to uneven heating during the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08K3/22C08K9/10
Inventor 张秋禹于志龙王方琴史有强文喜星
Owner NORTHWESTERN POLYTECHNICAL UNIV
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