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Dendritic macromolecular functional titanium dioxide micro particle toughening agent and epoxy resin

A technology of titanium dioxide and micron particles, which is applied in the field of epoxy resin toughening agent, epoxy resin and its preparation, can solve problems such as unsatisfactory performance and unsatisfactory performance, and achieve the effect of increasing processing difficulty and cost

Inactive Publication Date: 2012-07-18
CHANGZHOU LOONG TOP NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are other reports of nanoparticles as toughening agents, the performance is not ideal and cannot meet the needs of high-end resin fields such as megawatt wind blades.

Method used

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  • Dendritic macromolecular functional titanium dioxide micro particle toughening agent and epoxy resin
  • Dendritic macromolecular functional titanium dioxide micro particle toughening agent and epoxy resin
  • Dendritic macromolecular functional titanium dioxide micro particle toughening agent and epoxy resin

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Embodiment Construction

[0016] Method of Toughening Epoxy Resins with Titanium Dioxide Microparticle Tougheners Functionalized with Amino-Terminated Dendrimers,

[0017] (1) adopt one of the following methods to prepare the titanium dioxide micron particle toughening agent functionalized by amino-terminated dendrimers,

[0018] A. Disperse the amino-terminated dendrimers and titanium dioxide microparticles in organic solvents (absolute ethanol, acetone, n-hexane, cyclohexane, toluene, etc.), and add them respectively to a reaction kettle with a stirring and heating device, The titanium dioxide microparticles used here are microparticles with uniform particles obtained by hydrolysis of organic titanate. The preparation method is a method commonly used in industry to prepare titanium dioxide microparticles. The butyl orthotitanate used is Hydrolysis occurs, and the particle size distribution of titanium dioxide microparticles obtained is narrow, and its particle size can be controlled between 0.5 and 3...

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Abstract

The invention discloses an amino-terminated dendritic macromolecular functional titanium dioxide micro particle toughening agent. The toughening agent is generated by reacting a dendritic macromolecule with titanium dioxide micro particle, wherein the center of adopted amino-terminated dendritic macromolecule is provided with an alkoxy estersil group, and the terminal of the amino-terminated dendritic macromolecule is provided with a plurality of amino groups; the molecular formula of the macromolecule is G6.0-PAMAM-(NH2)z; the dendritic macromolecules are distributed on the surfaces of the titanium dioxide micro particles and bonded with titanium dioxide through covalent bonds, and the content of the dendritic macromolecules is 3 to 20 wt% that of the toughening agent. By combining a material technology with an epoxy resin toughening technology, the invention provides the flexible epoxy resin material with good comprehensive performance and a preparation method thereof, so that the impact strength of an epoxy resin system can be improved by over 400 percent.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to an epoxy resin toughening agent, an epoxy resin for increasing impact strength and a preparation method thereof. Background technique [0002] Epoxy resin has the characteristics of strong adhesion and small shrinkage, and is one of the most widely used thermosetting resins in industry. However, epoxy resin is very brittle, and its toughness index impact strength is low, which cannot meet the requirements of some high-end fields in the development of modern industrial technology. The toughening mechanism of epoxy resin generally includes two types: the first is the rubber filling technology based on the "sea-island structure", which emphasizes the uniformity and dispersion of the sea-island structure, and the combination of the sea-island and resin is embedded. The second is the use of polymer materials represented by liquid nitrile rubber, emphasizing the ability to bon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/22C08L63/00C09C1/04C09C3/10
Inventor 包海峰崔小强
Owner CHANGZHOU LOONG TOP NEW MATERIALS TECH
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