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Thermosetting resin containing propargyl ether and preparation method of thermosetting resin

A technology of propargyl ether and thermosetting, applied in the field of thermosetting resin with propargyl ether and its preparation, to achieve the effects of improving processability, good environmental stability, and low hygroscopicity

Inactive Publication Date: 2018-04-17
CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, benzoxazine still has some shortcomings, and people expect it to have better processing performance and environmental stability

Method used

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  • Thermosetting resin containing propargyl ether and preparation method of thermosetting resin
  • Thermosetting resin containing propargyl ether and preparation method of thermosetting resin
  • Thermosetting resin containing propargyl ether and preparation method of thermosetting resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 5g of phenol, 4.947g of aniline, and 3.192g of paraformaldehyde into a three-necked flask, connect a condenser and a stirring device, slowly raise the temperature to 110°C, react for 6 hours, and take out the reactant to obtain 12.027g of benzoxazine resin.

[0029] Put 5g of benzoxazine resin, 1.8g of 4-nitrophthalonitrile, and 1g of anhydrous potassium carbonate into a three-necked flask, add 30ml of N-methylpyrrolidone, and react at room temperature for 24h under the protection of nitrogen. The reacted substance was filtered, the filtrate was poured into a large amount of water, the solid was filtered out with suction, washed with water several times, and dried in a vacuum oven at 50° C. for 24 hours.

Embodiment 2

[0031] Add 3g of phenol, 2.968g of aniline, and 2.106g of paraformaldehyde into a three-necked flask, connect a condenser and a stirring device, slowly raise the temperature to 110°C, react for 6 hours, and take out the reactant to obtain 7.304g of benzoxazine resin.

[0032] Put 5g of benzoxazine resin, 2g of 4-nitrophthalonitrile, and 1.2g of anhydrous potassium carbonate into a three-necked flask, add 30ml of N-methylpyrrolidone, and react at room temperature for 24h under the protection of nitrogen. The reacted substance was filtered, the filtrate was poured into a large amount of water, the solid was filtered out with suction, washed several times with water, and dried.

Embodiment 3

[0034] Add 2.5g of phenol, 2.473g of aniline, and 1.755g of paraformaldehyde into a three-necked flask, connect a condenser and a stirring device, slowly raise the temperature to 110°C, react for 3 hours, and take out the reactant to obtain 6.215g of benzoxa oxazine resin.

[0035] Put 3g of benzoxazine resin, 1g of 4-nitrophthalonitrile, and 1g of anhydrous potassium carbonate into a three-necked flask, add 25ml of N-methylpyrrolidone, and react at room temperature for 24h under the protection of nitrogen. The final substance was filtered, the filtrate was poured into a large amount of water, the solid was filtered out with suction, washed several times with water, and dried.

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Abstract

The invention provides thermosetting resin containing propargyl ether and a preparation method of thermosetting resin. The thermosetting resin has a molecular structural formula with a structure as follows: formula (shown in the description). A monomer structure prepared by virtue of the thermosetting resin is proved through various analysis methods, and the temperature of a curing peak of propargyl ether modified benzoxazine thermosetting resin synthesized by virtue of the method is 180-225 DEG C; and the residual carbon rate of the resin reaches up to 50%-70% at 800 DEG C. Phenolic hydroxylgroups are produced during the curing of benzoxazine and are capable of catalyzing the cross-linking reaction of propargyl. By virtue of propargyl, the polymerization temperature of benzoxazine can belowered. Propargyl contains a carbon-carbon triple bond and is unsaturated bond type polybenzoxazine, so that the processing property of benzoxazine resin is improved.

Description

technical field [0001] The invention relates to a thermosetting resin and a preparation method thereof, in particular to a thermosetting resin with propargyl ether and a preparation method thereof. Background technique [0002] Compared with other typical thermosetting resins, benzoxazine polymers have obvious advantages, such as high thermal stability, close to zero curing shrinkage, very flexible molecular design, high carbon residue rate, and low surface energy. After complete curing, the glass transition temperature of benzoxazine is above 150°C. The structure of benzoxazine after ring-opening polymerization is not much different from that of phenolic resin, which makes its electrical insulation performance good; when benzoxazine resin is placed under appropriate temperature conditions, it can be cured, but it is different from phenolic and phenolic resins. Compared with epoxy resin, the curing temperature and post-processing temperature are higher, but when it is used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G14/12C08G14/073
CPCC08G14/06C08G14/12
Inventor 张侃谈昆伦刘宇奇季小强王秀岗刘时海
Owner CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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