Environment-friendly modified benzoxazine resin and preparation method thereof

A benzoxazine and environment-friendly technology, which is applied in the field of environment-friendly modified benzoxazine resin and its preparation, can solve the problem of low carbon residue rate of benzoxazine resin, low molecular regularity of resin, and uneven molecular weight distribution. Concentration and other issues to achieve the effect of improving heat resistance, improving resin thermal stability and mechanical properties, and good heat resistance

Active Publication Date: 2021-12-21
北京玻钢院复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Introduce phosphazene groups into the benzoxazine structure to develop different types of phosphazene-type benzoxazines. These phosphazene-type benzoxazines are superior to traditional benzoxazines in terms of flame retardancy and thermal stability. oxazi

Method used

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  • Environment-friendly modified benzoxazine resin and preparation method thereof

Examples

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Example Embodiment

[0031] Example one

[0032] In this embodiment, the present invention provides an environmentally friendly modified benzoxazine resin and a preparation method thereof, and the present invention provides an environmentally friendly modified benzoxazine resin, according to a mass part, including: six 35 parts of chlorine cycloalkitrile, 70 parts of acetaminophenol, 90 parts of the 4-maleimide-phyllophenol, 90 parts of formaldehyde; calculated by mass parts, catalysts include 4 parts of potassium carbonate, sodium hydroxide 0.2 parts. The solvent is acetone, methanol, tetrahydrofuran.

[0033] Specifically, the following steps:

[0034] S1. In the reactor, 35 parts of solvent acetone, hexachlorocyclic triaphoonitrile and 70 parts of acetaminophenol were stirred and dissolved, and 4 parts of potassium carbonate were added, and the first heating was heated to 60 ° C. For the first return reaction, the reflux reaction time is 24 h, the return reaction end, the first cooling, cooling to ...

Example Embodiment

[0055] Example 2

[0056] In this embodiment, the present invention provides an environmentally friendly modified benzoxazine resin and a preparation method thereof, and the present invention provides an environmentally friendly modified benzoxazine resin, according to a mass part, including: six 25 parts of chloride cycloalkitrile, 60 parts of acetaminophenol, 4- maleimide threslophenols, 80 parts of formaldehyde; calculated according to mass parts, catalysts include 4 parts of potassium carbonate, sodium hydroxide 0.2 parts The solvent is acetone, methanol, tetrahydrofuran.

[0057] Specifically, the following steps:

[0058] S1. In the reactor, 25 parts of solvent acetone, hexachlorocyclic triaphoonitrile and 60 parts of the acetaminophenol were stirred and dissolved, and 4 parts of potassium carbonate was added, and the first heating was heated to 57 ° C. For the first return reaction, the reflux reaction time is 28 h, the reflow reaction ends, the first cooling, cooling to 35...

Example Embodiment

[0061] Example three

[0062] In this embodiment, the present invention provides an environmentally friendly modified benzoxazine resin and a preparation method thereof, and the present invention provides an environmentally friendly modified benzoxazine resin, according to a mass part, including: six 40 parts of chlorine cycloalkitrile, 75 parts of acetaminophenol, 100 parts of 4-maleimide, 100 parts of formaldehyde; calculated by mass parts, catalysts include 4 parts of potassium carbonate, sodium hydroxide 0.2 parts. The solvent is acetone, methanol, tetrahydrofuran.

[0063] Specifically, the following steps:

[0064] S1. In the reactor, 40 parts of solvent acetone, hexachlorocyclic triaphoonitrile, and stirred with acetaminophenol, stirred and dissolved, 4 parts of potassium carbonate, first heating, heating to 65 ° C for the first time. The first reflux reaction was performed, the reflux reaction time was 36 h, the reflux reaction ended, the first cooling, cooled to 34 ° C, w...

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Abstract

The invention relates to the technical field of resin, in particular to environment-friendly modified benzoxazine resin and a preparation method thereof. The preparation method includes the steps that a solvent, phosphonitrilic chloride trimer, acetaminophenol and a catalyst are added, stirred, dissolved and heated to react to obtain a first solid intermediate product, the first solid intermediate product is added into the solvent, a catalyst is added, and a heating reaction is performed, a second solid intermediate product is obtained, the second solid intermediate product is added into the solvent, formaldehyde and 4-maleimidophenol are added, and the heating reaction is performed to obtain the environment-friendly modified benzoxazine resin. The invention further provides the environment-friendly modified benzoxazine resin. The environment-friendly modified benzoxazine resin is prepared from phosphonitrilic chloride trimer, acetaminophenol, 4-maleimido phenol, formaldehyde, the catalyst and the solvent. The obtained modified benzoxazine resin is regular in structure and low in molecular activity, and the cured resin is high in heat resistance, high in residual carbon rate, excellent in mechanical property and good in flame retardant effect.

Description

technical field [0001] The invention relates to the technical field of resins, in particular to an environment-friendly modified benzoxazine resin and a preparation method thereof. Background technique [0002] Polymeric flame retardants are used in a wide range of applications such as advanced composite matrices, copper clad laminates, coatings for printed circuit boards and barrier materials, semiconductor packaging and manufacturing. Additives containing halides in flame retardants can effectively show higher flame retardant potential, but they will release highly toxic gases and form potential carcinogens when burned. For example, some traditional flame retardants will migrate to the surface and evaporate, becoming Potential pollutants of the environment, which can have long-term effects on human health, are potentially problematic flame retardant polymers even if they are not burned. [0003] In order to meet the increasing demand for flame retardants and the developme...

Claims

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Application Information

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IPC IPC(8): C08G14/06
CPCC08G14/06
Inventor 田谋锋姚亚琳尹群皎贾晨辉刘红影
Owner 北京玻钢院复合材料有限公司
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