A kind of hydantoin type epoxy resin toughening agent and preparation method thereof

A technology of hydantoin epoxy resin and epoxy resin, applied in the field of toughening agent, can solve the problems of loss of application value, decrease of temperature resistance, difficulty in processing, etc., to eliminate cracking phenomenon, improve impact strength, and have environmental protection Guaranteed effect

Inactive Publication Date: 2017-12-01
李发凯 +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After a large number of tests, it is found that when the existing general-purpose epoxy resin toughening agent system is used to toughen hydantoin epoxy, there will be insurmountable problems. For example, when using liquid nitrile rubber to toughen hydantoin epoxy resin, there will be corresponding New problems such as poor capacity, uneven size of rubber particles after curing and phase separation, and lower heat distortion temperature; the use of modified nitrile rubber or polyether polyol tougheners will greatly reduce the temperature resistance and lose important properties. Application value; using inorganic nanoparticles or core-shell structure nanoparticles, as well as organic elastic nanoparticles for toughening, will be difficult to process, and it is very difficult to disperse evenly, so that the purpose of toughening cannot be achieved

Method used

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  • A kind of hydantoin type epoxy resin toughening agent and preparation method thereof
  • A kind of hydantoin type epoxy resin toughening agent and preparation method thereof
  • A kind of hydantoin type epoxy resin toughening agent and preparation method thereof

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Embodiment Construction

[0016] According to the above design scheme, two toughening agent products, HYR1 and HYR2, are now prepared, and the formulas of the examples are shown in Table 1.

[0017] Table 1 Hydantoin type epoxy resin toughening agent embodiment formula

[0018]

[0019] The processing flow of Hein type epoxy resin toughening agent is divided into eight steps in detail, as follows:

[0020] Step 1. Pre-dispersion: Put the nano-elastic particles in the dispersion container, add FL-1 composite lubricating dispersant, stir with a high-speed mixer at a speed of 4000r / min for 25 minutes, and keep the temperature at 25°C~45°C;

[0021] Step 2, fine dispersion: transfer the material obtained in step 1 into a colloid mill, grind twice, and keep the temperature at 25°C~45°C;

[0022] Step 3, soaking and coating: transfer the material obtained in step 2 into a dispersion container, add FL-2 active surface treatment agent, stir with a high-speed mixer at a speed of 100r / min for 120 minutes, an...

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Abstract

The hydantoin type epoxy resin is a high-performance special epoxy resin, and the invention provides a toughening agent with hydantoin type epoxy resin as a carrier. The toughening agent is mainly used for the toughening of high-temperature-resistant resins such as hydantoin epoxy resin, which can greatly improve the impact strength of hydantoin epoxy matrix, and the heat distortion temperature does not decrease, maintaining the original hydantoin epoxy resin. High temperature performance. The main components of the toughening agent are: composite nano-elastomer, FL‑1 surface lubricating and dispersing agent, FL‑2 active surface treatment agent, defoaming agent, etc. The formula of the present invention adopts a self-designed high-energy homogenization dispersion method, and is made through fine processing such as batching, pre-dispersion, surface coating modification, high-energy grinding, ultrasonic treatment, and high-pressure homogenization treatment.

Description

technical field [0001] The invention relates to a toughening agent with a hydantoin-type epoxy resin as a carrier and a composite nano-elastomer as a main functional component and a preparation method thereof. Background technique [0002] Hydantoin type epoxy resin is a kind of special epoxy resin different from ordinary diphenol-based propane type epoxy resin, its chemical name is 2,4-imidazolidinedione-3,5,5-dimethyl-1 ,3-bis(2-oxiranylmethyl)-homopolymer, whose structure is characterized by hydantoin polyheterocycles and reactive epoxy groups. The main performance characteristics of hydantoin type epoxy resin are: (1) low viscosity, only 1 / 4~1 / 3 of the viscosity of ordinary diphenol propane type epoxy resin, and good process operability; (2) cured product is temperature resistant (3) Good weather resistance; (4) Excellent arc resistance and leakage resistance; (5) Low toxicity, safe and environmentally friendly. It is widely used in various fields such as photoelectric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L13/00C08L9/02C08L33/02C08K3/34C08K3/36C08K3/22C08K5/5435C08K5/54
Inventor 徐唱李发凯范忠庆黎铖
Owner 李发凯
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