High-toughness high-Tg-value epoxy resin and preparation method

A technology of epoxy resin and group epoxy resin, which is applied in the field of epoxy resin and its preparation, can solve the problems of application limitation, decline of impact resistance of resin matrix, etc., and achieve the effect of improving poor toughness and excellent mechanical properties

Inactive Publication Date: 2015-04-29
HENGSHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At this stage, epoxy resin composite materials are usually used for a long time at a maximum temperature of 180°C, and there are few reports on composite products with a temperature resistance exceeding 200°C, and with the gradual increase in temperature resistance, the impact resistance of the resin matrix decreases sharply , so that its application in load-bearing structures is greatly restricted

Method used

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  • High-toughness high-Tg-value epoxy resin and preparation method
  • High-toughness high-Tg-value epoxy resin and preparation method

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Experimental program
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Effect test

Embodiment 1

[0028]Embodiment 1 Preparation of high toughness and high Tg epoxy resin

[0029] The preparation method of the high toughness high Tg epoxy resin of the present embodiment may further comprise the steps:

[0030] 1) Preparation of toughening agent paste, epoxy resin in toughening agent paste system B, toughening agent respectively choose trifunctional epoxy resin AFG-90, nano core shell particle toughening agent "Kane Ace" MX125, according to weight The ratio is 15:10 combination. First weigh 45g of trifunctional epoxy resin AFG-90 into the beaker, then weigh 30g of nano core-shell particle toughening agent "Kane Ace" MX125 into the beaker, mechanically stir the two to mix evenly, and finally pass through the three-roller grinding equipment Mix more fully to obtain a uniformly mixed toughener paste for later use.

[0031] 2) Preparation of high-toughness, high-Tg epoxy resin composition. Resin mixture A selects trifunctional epoxy resin AFG-90 and cresol-formaldehyde epoxy ...

Embodiment 2～6

[0036] The preparation method of the epoxy resin cast body is as shown in Example 1, and the contained specific components are shown in Table 2 below:

[0037] Table 2 Components and properties of cast resin

[0038]

[0039] As shown in the results in Table 2, when different ratios of four-functional epoxy resin AG-80 and nano-core-shell particle toughening agent "Kane Ace" MX125 are used according to the embodiments disclosed herein, curable Composition: High glass transition temperature, high impact strength, high tensile strength, high stretch film weight and high elongation at break.

Embodiment 7～10

[0041] The preparation method of epoxy resin is as shown in Example 1, and the contained specific components are shown in Table 3 below

[0042] Table 3 Resin mixture components and their casting properties

[0043]

[0044] As shown in the results in Table 3, when using different types of thermoplastic tougheners such as polyetherimide, phenolic hydroxyl polyphenylene ether PPO-SA90 and nano core-shell particle tougheners such as "Kane Ace" according to the embodiments disclosed herein MX217, P52, can form a curable composition with the following properties: high glass transition temperature, high impact strength, high tensile strength, high tensile modulus and high elongation at break.

[0045] In summary, the curable epoxy resin disclosed herein can include multifunctional epoxy resin, thermoplastic toughening agent, nano core-shell particle toughening agent and amine curing agent, and such composition can exhibit multiple A good balance of various physical properties i...

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Abstract

The invention provides a high-toughness high-Tg-value epoxy resin. The high-toughness high-Tg-value epoxy resin is prepared from the following components in parts by weight: 40-100 parts of an epoxy resin mixture, 2-20 parts of at least one thermoplastic toughened resin, 5-40 parts of at least one nano core-shell particle and 34-40 parts of an amine curing agent, wherein the epoxy resin mixture comprises at least one polyfunctional epoxy resin. The high-toughness high-Tg-value epoxy resin provided by the invention has excellent mechanical properties, electrical insulating properties, corrosion resistance and adhering performance of the epoxy resin, is improved in the defects of poor toughness and low Tg value of the epoxy resin, can be used as a coating, an adhesive, an electronic and electrical device packaging and insulating material, an industrial building material and a composite material and can be directly or indirectly applied to various fields of the national economy from daily necessities to high and new technologies.

Description

technical field [0001] The invention relates to an epoxy resin and a preparation method thereof, in particular to an epoxy resin with high toughness and high heat resistance (high Tg) performance and a preparation method thereof. Background technique [0002] As a thermosetting resin, epoxy resin is widely used in construction, machinery, electronics, aerospace and other fields due to its good electrical insulation, chemical stability, adhesion, and processability. However, epoxy resin contains a large number of epoxy groups. After curing, the crosslinking density is large, the internal stress is high, the quality is brittle, and the impact resistance, crack resistance, weather resistance and heat and humidity resistance are poor, so it is difficult to meet the requirements of engineering technology. requirements, its application is subject to certain restrictions. In recent years, structural bonding materials, packaging materials, fiber reinforced materials, laminates, int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L81/06C08L79/08C08L71/12C08G59/20C08G59/40C08G59/50
Inventor 单瑞俊杨强贾艳荣郭自豪
Owner HENGSHEN
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