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A kind of modified polyamine coupling agent and preparation method thereof

A polyamine coupling agent and modification technology are applied in the field of modified polyamine coupling agent and its preparation, which can solve the problems of unsatisfactory improvement of mechanical properties of high-filling modified plastics and little improvement of two-phase interface strength, etc. , to achieve the effect of enhancing interfacial compatibility, simple and easy preparation method, and promoting uniform dispersion

Inactive Publication Date: 2015-09-16
广东省石油化工研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the coupling agents widely used in the industry include silane coupling agents, titanate coupling agents, aluminate coupling agents, zircoaluminate coupling agents, organic chromium coupling agents, etc. These coupling agents have been proven to be effective Effectively improve the interfacial compatibility between the filler and the plastic matrix, and improve the dispersion uniformity of the filler powder in the plastic matrix, but the strength of the two-phase interface is not greatly improved, and the mechanical properties of highly filled modified plastics are not ideal.

Method used

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  • A kind of modified polyamine coupling agent and preparation method thereof
  • A kind of modified polyamine coupling agent and preparation method thereof
  • A kind of modified polyamine coupling agent and preparation method thereof

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preparation example Construction

[0029] The preparation method of the above-mentioned modified polyamine coupling agent comprises the following steps: put polyethyleneimine, acrylic acid or methacrylic acid, and a polymerization inhibitor into a reactor, mix them uniformly, and react at 100-180°C under a protective gas atmosphere After 1-6 hours, the product is obtained; wherein, the mass ratio of acrylic acid or methacrylic acid to polyethyleneimine is 1: (1-10), and the polymerization inhibitor is 0.1-1% of the mass of acrylic acid or methacrylic acid.

[0030] Preferably, the polyethyleneimine has a weight average molecular weight of 1000-10000 Da. More preferably, the polyethyleneimine has a weight average molecular weight of 2000-5000 Da.

[0031] Preferably, the polymerization inhibitor is phenothiazine, 1,4-hydroquinone, p-hydroxyanisole, 2-tert-butylhydroquinone, 2,4-dimethyl-6-tert-butylphenol at least one of the More preferably, the polymerization inhibitor is phenothiazine.

[0032] Preferably, ...

Embodiment 1

[0037] 250g acrylic acid, 250g anhydrous polyethyleneimine (M w =2000) and 0.5g of phenothiazine were added to a 1L reactor, fed with nitrogen, heated to 130°C, and stirred for 2 hours to obtain a light yellow viscous liquid, namely polyethyleneimine-acrylic acid graft PEI- g-ACR-1.

Embodiment 2

[0039] 150g methacrylic acid, 400g anhydrous polyethyleneimine (M w =2000) and 0.7g of 1,4-hydroquinone were added to a 1L reactor, nitrogen was introduced, heated to 110°C, and stirred for 3 hours to obtain a light yellow viscous liquid, polyethyleneimine-formazol Acrylic acid graft PEI-g-ACR-2.

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Abstract

The invention discloses a modified polyamine coupling agent and a preparation method thereof. The modified polyamine coupling agent provided by the invention has high reactivity, and it can be used to fill and strengthen modified plastics, which can promote the uniform dispersion of fillers in the plastic matrix, and greatly enhance the interface compatibility between the filler and the plastic matrix Improve the mechanical properties of filled modified plastics. The modified polyamine coupling agent can be widely used in highly filled reinforced modified plastics. The preparation method of the modified polyamine coupling agent of the invention is simple and easy, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, and in particular relates to a modified polyamine coupling agent and a preparation method thereof. Background technique [0002] In plastic processing, adding appropriate powder fillers can achieve the effect of incremental cost reduction, and can also improve or enhance the physical and mechanical properties, wear resistance, and thermal properties of plastic products. Filled reinforced modified plastics are an important class of modified materials, and commonly used fillers are inorganic powder or plant fiber powder. With the increasing shortage of petroleum resources, the application of highly filled modified plastics is increasing. However, the polarity difference between fillers and plastics leads to low mechanical properties of highly filled modified plastics, which limits the application of highly filled modified plastics. In order to improve the interfacial compatib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/04C08L23/12C08L79/02C08K3/26C08L23/06C08L23/08C08K3/34C08K3/22
Inventor 李伟浩陈建良李华亮刘超栋
Owner 广东省石油化工研究院