Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cyanate ester adhesive with low dielectrics and high toughness, and preparation method thereof

A cyanate ester, high toughness technology, applied in adhesives and other directions, can solve the problems of reducing the dielectric properties of cyanate esters, environmental pollution, harsh conditions for fluorinated cyanate esters, etc., and achieves short curing time, low curing temperature, and equipment. less demanding effects

Active Publication Date: 2017-05-31
SOUTHWEAT UNIV OF SCI & TECH
View PDF21 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy resin is an ideal toughening modifier for cyanate ester resin. It can react with cyanate ester group to form oxazoquinolone, which has a good toughening effect on cyanate ester. Ester materials will reduce the dielectric properties of cyanate esters; in the method of preparing low-dielectric cyanate ester materials, the effect is better to introduce F atoms into cyanate esters, but the conditions for preparing fluorinated cyanate esters are harsh. , easy to cause environmental pollution, so there are still many problems in the preparation of cyanate ester materials with good toughness and excellent dielectric properties

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
  • Cyanate ester adhesive with low dielectrics and high toughness, and preparation method thereof
  • Cyanate ester adhesive with low dielectrics and high toughness, and preparation method thereof
  • Cyanate ester adhesive with low dielectrics and high toughness, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh a certain amount of bisphenol A cyanate and fully melt it at 110-115 °C, then cool it down to 80-85 °C, add 0.5‰ cobalt acetylacetonate (Co 3+ ), after fully stirring and mixing, the cyanate ester adhesive was prepared. The specific performance is shown in Table 1.

Embodiment 2

[0027] Weigh a certain amount of bisphenol F type cyanate and fully melt it at 110-115 °C, then cool it down to 80-85 °C, add 0.5‰ cobalt acetylacetonate (Co 3+ ), after fully stirring and mixing, the cyanate ester adhesive was prepared. The specific performance is shown in Table 1.

Embodiment 3

[0029] Weigh a certain amount of bisphenol E-type cyanate and fully melt it at 110-115 °C, then cool it down to 80-85 °C, add 0.5‰ cobalt acetylacetonate (Co 3+ ), after fully stirring and mixing, the cyanate ester adhesive was prepared. The specific performance is shown in Table 1.

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

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
shear strengthaaaaaaaaaa
dielectric lossaaaaaaaaaa
Login to View More

Abstract

The invention discloses a cyanate ester adhesive with low dielectrics and high toughness, and a preparation method thereof, and belongs to the field of high polymer materials. Bisphenol AF type epoxy resin (DGEBHF) and organic metal salt catalyst are used for jointly modifying cyanate ester so as to solve the problem of poor dielectrics, poor toughness and insufficient adhesion of the cyanate ester. The cyanate ester adhesive is used for the bonding of electronic products. The preparation method comprises the following steps: (1) at a ratio of 70-95%, weighing cyanate ester resin, smelting at the temperature of 100-120DEG C, cooling to 75-90DEG C, and adding 4.9-29.957% of DGEBHF to be stirred to be transparent to obtain premixing adhesive; (2) adding 0.025-0.1% of organic metal salt catalyst into the premixing adhesive obtained in (1) to be evenly mixed at the temperature of 75-90DEG C to obtain the cyanate ester adhesive with low dielectrics and high toughness. The cyanate ester adhesive has the advantages of excellent dielectricity, toughness, adhesion and solidification, simple preparation technology, low equipment requirement and environment protection.

Description

technical field [0001] The invention relates to a low-dielectric and high-toughness cyanate adhesive and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Cyanate Ester Resin (CE) is a kind of resin with -OCN in the terminal group, which forms a triazine ring resonance structure after curing, and has low dielectric constant, low dielectric loss, high dimensional stability, and heat resistance. It is an ideal adhesive resin matrix for electronic products. However, the triazine ring structure formed by ordinary cyanate adhesives after curing is highly symmetrical, high in crystallinity, and high in crosslinking density, which makes ordinary cyanate adhesives poor in toughness and becomes an important factor limiting their application; in addition, ordinary cyanate Adhesives cannot be fully cured at relatively low temperatures (adhesives generally used in electronic products require a curing temperature below 200 °C), and ...

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 Applications(China)
IPC IPC(8): C09J187/00C08G81/00
CPCC08G81/00C09J187/00
Inventor 何杰马寒冰侯德发
Owner SOUTHWEAT UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com