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

Lead-free compatible high frequency copper clad laminate and its preparing method

A copper clad laminate, high-frequency technology, applied in printed circuit manufacturing, printed circuit components, electrical components, etc., can solve problems such as harmful gas generation, unfriendly human body and environment

Inactive Publication Date: 2009-09-09
GUANGDONG SHENGYI SCI TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there has been a view that halogen (mainly referring to Br and Cl) flame retardants will produce harmful gases during combustion, which is not friendly to the human body and the environment.

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
  • Lead-free compatible high frequency copper clad laminate and its preparing method
  • Lead-free compatible high frequency copper clad laminate and its preparing method
  • Lead-free compatible high frequency copper clad laminate and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Take 35 parts of multifunctional epoxy resin, 23 parts of phosphorus-containing phenolic resin, 21 parts of PTFE, 20 parts of silicon micropowder and 1 part of imidazole accelerator, add an appropriate amount of methyl ethyl ketone as a solvent, and prepare it with a solid content of 65% under sufficient stirring. resin solution.

[0067]Use 2116NE glass fiber cloth to impregnate the above resin solution, and bake at 170°C for 5 minutes to make a bonding sheet. The resin content of the adhesive sheet was 53%, and the resin fluidity was 20%.

[0068] Take 8 bonding sheets, stack them neatly, cover both sides with 35μm electrolytic copper foil, and then sandwich them between two mirror stainless steel plates, place them in a vacuum press, at 195±3°C, 30Kg / cm 2 Under the condition of hot pressing for 90 minutes, a double-sided copper clad laminate is made. The test results of copper clad laminates are shown in Table 1.

Embodiment 2

[0070] Take 37 parts of multifunctional epoxy resin, 25 parts of phosphorus-containing phenolic resin, 20 parts of PTFE, 17 parts of silicon micropowder and 1 part of imidazole accelerator, add an appropriate amount of methyl ethyl ketone as a solvent, and prepare a solid content of 65% under sufficient stirring resin solution.

[0071] Use 2116NE glass fiber cloth to impregnate the above resin solution, and bake at 170°C for 5 minutes to make a bonding sheet. The resin content of the adhesive sheet was 53%, and the resin fluidity was 21%.

[0072] Take 8 bonding sheets, stack them neatly, cover both sides with 35μm electrolytic copper foil, and then sandwich them between two mirror stainless steel plates, place them in a vacuum press, at 195±3°C, 30Kg / cm 2 Under the condition of hot pressing for 90 minutes, a double-sided copper clad laminate is made. The test results of copper clad laminates are 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
gel timeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a lead-free compatible high-frequency copper-clad laminate applied to printed circuits and a preparation method thereof. The key technology is the resin composition and NE glass fiber cloth used for making copper-clad laminates, as well as the adhesive sheets and clad laminates produced therefrom. Copper plate, the resin composition has the following components and contents: 30-45 parts of multifunctional epoxy resin, 20-30 parts of phosphorus-containing phenolic resin, 20-30 parts of polytetrafluoroethylene, 0.5-1.5 parts of curing accelerator, inorganic filler 20-30 parts, appropriate amount of solvent. The resulting copper clad laminates do not contain bromine, meet the requirements of the RoHS directive, and have high thermal reliability, excellent dielectric properties, low thermal expansion coefficient, and excellent flame retardancy.

Description

Technical field: [0001] The invention relates to the field of copper clad laminates applied to printed circuits. More specifically, it is the resin composition and NE glass fiber cloth for making copper-clad laminates, as well as the adhesive sheets and copper-clad laminates made therefrom. Background technique: [0002] On July 1, 2006, two EU directives (Restricting the Use of Certain Hazardous Substances in Electrical and Electronic Products and End-of-Life Electrical and Electronic Products) were officially implemented, marking that the global electronics industry has entered the era of lead-free soldering. Due to the increase in soldering temperature, the requirements for thermal reliability of copper clad laminates have been greatly improved in an all-round way. [0003] The thermal reliability of copper clad laminates includes glass transition temperature (Tg), thermal decomposition temperature (Td), thermal delamination time (T-288), solder resistance and coefficien...

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): H05K1/02H05K3/00
Inventor 辜信实
Owner GUANGDONG SHENGYI 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