Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of flame-retardant bismaleimide resin and preparation method thereof

A bismaleimide and resin technology is applied in the fields of biomass-based phosphate ester flame retardant modified bismaleimide resin, flame retardant bismaleimide resin and preparation thereof, and can solve the problem of High volatility, no technical solutions reported in literature, unsatisfactory compatibility, etc., to achieve excellent flame retardant performance, easy industrial production, and low cost.

Active Publication Date: 2019-02-26
SUZHOU UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphate esters are mostly viscous liquids, and they have the disadvantages of high volatility and unsatisfactory compatibility when added to resins as additive flame retardants.
So far, the technical scheme of modifying BMI based on biomass phosphate flame retardant has not been reported in the literature

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of flame-retardant bismaleimide resin and preparation method thereof
  • A kind of flame-retardant bismaleimide resin and preparation method thereof
  • A kind of flame-retardant bismaleimide resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Preparation of biomass-based phosphate

[0030] See attached figure 1 , It is the synthesis reaction formula of the biomass-based phosphate ester of the present invention, the reaction is a phosphorylation reaction; in this example, the specific method is: 36.0g sodium hydroxide and 10mL water at 1±0.5℃ Mix to obtain paste A. Under stirring conditions, add dropwise a solution of eugenol (147.8 g) in dichloromethane (300 mL) to paste A to prepare sodium eugenol suspension B. Then, at 0°C, a solution of phosphorus oxychloride (46.0 g) in dichloromethane (200 mL) was slowly added dropwise to the sodium eugenol suspension B, the addition was completed in 2 hours, and the reaction was continued for 2 hours. After the reaction is over, add 120 g of 20% sodium hydroxide aqueous solution to the reaction flask to remove unreacted eugenol and generated sodium chloride. The organic layer was separated by extraction, washed with saturated brine until neutral, and dried over anhydr...

Embodiment 2

[0038] 1) Preparation of biomass-based phosphate

[0039] Mix 42.0g of sodium hydroxide with 13mL of water at 1±0.5℃ to obtain paste A. Under stirring conditions, add eugenol (172.4g) and methylene chloride (400mL) to paste A dropwise Sodium eugenol suspension colloid B was prepared. Then, at 20°C, a solution of phosphorus oxychloride (46.0 g) in dichloromethane (250 mL) was slowly added dropwise to the sodium eugenol suspension B. The addition was completed in 3 hours, and the reaction was continued for 3 hours. After the reaction, add 200g of 10% sodium hydroxide aqueous solution to the reaction flask to remove unreacted eugenol and generated sodium chloride. The organic layer was separated by extraction, washed with saturated brine until neutral, and dried over anhydrous sodium sulfate. Rotate the solvent to obtain a light yellow liquid, which is a biomass-based phosphate flame retardant.

[0040] 2) Preparation of flame-retardant bismaleimide resin

[0041] At 20℃, 50.0g N, N...

Embodiment 3

[0043] 1) Preparation of biomass-based phosphate

[0044] Mix 48.0 g of sodium hydroxide and 15 mL of water in an ice water bath at 0~5℃ to obtain paste A. Under stirring conditions, add eugenol (197.0 g) in methylene chloride ( 500mL) solution to prepare sodium eugenol suspension colloid B. Then, at 30°C, a solution of phosphorus oxychloride (46.0 g) in dichloromethane (300 mL) was slowly added dropwise to the sodium eugenol suspension B. The addition was completed in 4 hours, and the reaction was continued for 4 hours. After the reaction is completed, 300g of 5% sodium hydroxide aqueous solution is added to the reaction flask to remove unreacted eugenol and generated sodium chloride. The organic layer was separated by extraction, washed with saturated brine until neutral, and dried over anhydrous sodium sulfate. Rotate the solvent to obtain a light yellow liquid, which is a biomass-based phosphate flame retardant.

[0045] 2) Preparation of flame-retardant bismaleimide resin

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a flame-retardant bismaleimide resin and a preparation method thereof. The eugenol of the whole biomass is formed into a suspension colloid of eugenol salt under the action of alkali metal strong base, and then dripped into the methyl chloride solution of phosphorus oxychloride for reaction to obtain a phosphate flame retardant based on biomass; imide, 2,2'-diallyl bisphenol A and the obtained phosphate are mixed, and after curing and post-treatment, a flame-retardant bismaleimide resin is obtained. Compared with petroleum-based bismaleimide resin, the flame-retardant bismaleimide resin prepared by the present invention is obtained from raw material eugenol from biomass, and the raw material is green and renewable; it maintains the petroleum-based bismaleimide resin In addition to the mechanical properties and processability of imide resin, it has excellent flame retardancy. The preparation method provided by the invention has the characteristics of low cost and simple production process, and has broad application prospects in the fields of aerospace, electronic information, electrical insulation and the like.

Description

Technical field [0001] The invention relates to a flame-retardant bismaleimide resin and a preparation method thereof, in particular to a biomass-based phosphate flame retardant modified bismaleimide prepared by using green renewable biomass resources Amine resin belongs to the technical field of chemical and polymer materials. Background technique [0002] Bismaleimide resin (BMI), as one of the representative high-performance thermosetting resins, has outstanding heat resistance, dielectric properties, heat and humidity resistance, and excellent mechanical properties, chemical resistance, radioactivity, and Abrasion and dimensional stability, so it has huge application prospects in aerospace, electrical insulation, new energy and other fields. However, the disadvantages of BMI itself, such as high melting point, narrow processing window, and large brittleness of the cured product, have largely limited its application. Therefore, the research on BMI in the past has been devote...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/12
CPCC08G73/12
Inventor 顾嫒娟缪佳涛梁国正袁莉
Owner SUZHOU UNIV