Cyanate ester/bimaleimide modified resin and preparation method

A bismaleimide and modified resin technology, applied in the field of high-performance modified resins, can solve the problems of harsh curing equipment and restrictions on the wide application of cyanate/bismaleimide resins

Inactive Publication Date: 2009-06-17
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high temperature (>230°C) and long-time curing conditions impose harsh requirements on curing equipment, which limits the wide application of cyanate / bismaleimide resins

Method used

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  • Cyanate ester/bimaleimide modified resin and preparation method
  • Cyanate ester/bimaleimide modified resin and preparation method
  • Cyanate ester/bimaleimide modified resin and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Bisphenol A type cyanate monomer (BADCy) 90g, 4,4'-diphenylmethane bismaleimide (BDM) 10g (BADCy:BDM=15.6:1mol), heat and melt in an oil bath at 160°C , after stirring evenly, add 4.5g of organotin catalyst, stir and react at this temperature for 20min, then pour it into the mold, degas it in a vacuum drying oven for 5min, put it in an electronic oven for curing according to the predetermined curing process, and post-cure The condition is 220°C / 2h. The properties of the cured resins are listed in Table 1. Dynamic Mechanical Thermal Analysis DMA as figure 1 shown.

Embodiment 2

[0020] Bisphenol A type cyanate monomer (BADCy) 30g, 4,4'-diphenylmethane bismaleimide (BDM) 20g (BADCy:BDM=1.93:1mol), heat and melt in an oil bath at 160°C , after stirring evenly, 1.5 g of organotin catalyst was added, and the rest were the same as in Example 1, and the post-curing condition was 220°C / 4h. Dynamic Mechanical Thermal Analysis DMA as figure 2 shown.

Embodiment 3

[0022] Bisphenol A type cyanate monomer (BADCy) 22g, 4,4'-diphenylmethane bismaleimide (BDM) 28g (BADCy:BDM=1:1mol), heat and melt in an oil bath at 160°C , add organotin catalyst 2.2g after stirring evenly, all the other are the same as embodiment 2. Dynamic Mechanical Thermal Analysis DMA as image 3 shown.

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Abstract

The invention discloses the ethylene rhodanate / bimaleimide modified resin catalyzed and solidified by organotin compound. The solidification reaction of the ethylene rhodanate / bimaleimide modified resin requires high temperature and long term to be completely solidified, and the harsh solidification condition restricts the application. The organotin compound is a high-activity catalyst, the adoption of which in catalyzing and solidifying the solidification reaction of the ethylene rhodanate / bimaleimide can obtain completely solidified resin with excellent performance under the condition of reducing solidification reaction temperature and shortening reaction time.

Description

technical field [0001] The invention relates to a thermosetting resin composition, especially a high-performance modified resin composed of cyanate ester and bismaleimide. Background technique [0002] Cyanate ester resin and bismaleimide resin are two kinds of high-performance thermosetting resin matrix respectively. Combining the two, the bis-triazine resin obtained through curing reaction combines the toughness of cyanate ester and bis-maleimide resin. Excellent heat resistance, without the need for complex molecular design, high-performance resin materials with a glass transition temperature greater than 200°C and excellent mechanical properties can be obtained. This material has an important role in aerospace structural materials. Application prospect. At the same time, cyanate ester / bismaleimide modified resin has good dielectric properties, and its dielectric constant and dielectric loss tangent (ε: ~3.1, tgδ: ~0.007) are between cyanate ester and bismaleimide Horse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/00C08F283/00
Inventor 李文峰王国建
Owner TONGJI UNIV
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