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

Method for manufacturing CTI copper-clad laminate

A technology of copper-clad laminates and manufacturing methods, applied in the direction of adhesive heating bonding methods, lamination, lamination devices, etc., can solve the problems of poor insulation performance of the substrate, aging of resin components, etc., and prolong the service life , Improve the effect of tracking voltage resistance

Active Publication Date: 2012-03-21
SHANGHAI GUOJI ELECTRONICS MATERIALS CO LTD
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the surface of the PCB substrate is tracked due to micro-leakage, on the one hand, heat is generated, which ages the resin components on the substrate surface; on the other hand, under the action of a high-voltage electric field, electron migration and denaturation will occur in the resin structure. The insulation performance of the substrate is getting worse and worse

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
  • Method for manufacturing CTI copper-clad laminate
  • Method for manufacturing CTI copper-clad laminate
  • Method for manufacturing CTI copper-clad laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Mixing formula:

[0049]

[0050] 2. Prepreg control parameters

[0051] Gluing machine oven temperature: 190°C

[0052] Gluing speed: 15m / min

[0053] Resin content: 43%

[0054] Gel time: 105s

[0055] Liquidity: 21%

[0056] Volatile matter: 0.35%;

[0057] 3. Arranging boards

[0058] 8 pieces of 7628 prepreg (1.6mm board material), the copper foil is H OZ.

[0059] 4. Thermoforming

[0060] Hot pressing temperature: 185°C

[0061] Pressure: 30kg / cm 2

[0062] Hot pressing time: 90min

[0063] 5. The basic performance parameters are as follows in Table 2:

[0064] Table 2

[0065]

[0066]

Embodiment 2

[0068] 1. Mixing formula:

[0069]

[0070] 2. Prepreg control parameters

[0071] Gluing machine oven temperature: 200°C

[0072] Gluing speed: 17m / min

[0073] Resin content: 46%

[0074] Gel time: 95s

[0075] Liquidity: 22%

[0076] Volatile matter: 0.35%;

[0077] 3. Arranging boards

[0078] 8 pieces of 7628 prepreg (1.6mm board material), copper foil is 1OZ.

[0079] 4. Thermoforming

[0080] Hot pressing temperature: 200°C

[0081] Pressure: 30kg / cm 2

[0082] Hot pressing curing time: 60min

[0083] 5. The basic performance parameters are as follows in Table 3:

[0084] table 3

[0085]

Embodiment 3

[0087] 1. Mixing formula:

[0088]

[0089] 2. Prepreg control parameters

[0090] Gluing machine oven temperature: 210°C

[0091] Gluing speed: 20m / min

[0092] Resin content: 45%

[0093] Gel time: 100s

[0094] Liquidity: 22%

[0095] Volatile matter: 0.30%;

[0096] 3. Arranging boards

[0097] 6 pieces of 7628 prepreg (1.2mm board material), copper foil is 2OZ.

[0098] 4. Thermoforming

[0099] Hot pressing temperature: 210°C

[0100] Pressure: 30kg / cm 2

[0101] Hot pressing time: 40min

[0102] 5. The basic performance parameters are as follows in Table 4:

[0103] Table 4

[0104]

[0105] The present invention focuses on the research of the epoxy resin system used in copper-clad laminates: FR-4 laminates usually use brominated epoxy resin, and the Br---C bond often makes the polarity of the resin molecule higher , relatively easy to polarize, under the action of electric tracking, the Br---C bond will be cracked, and the CTI value will be reduced. T...

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 relates to a method for manufacturing a CTI 600 copper-clad laminate. The method is realized by the following steps: glue mixing, sizing, plate arrangement, hot-press molding, disassembly, processing and inspecting, wherein an adhesive system in the step of the 'glue mixing' is composed of the following materials in mass ratio (kg): 125 to 133 kg of low brominated epoxy resin, 2.60 to 3.40 kg of dicyandiamide, 30 to 36 kg of dimethyl formamide, 0.060 to 0.080 kg of dimethyl imidazole, and 10 to 40 kg of aluminum hydroxide, wherein the low brominated epoxy resin belongs to tetrabromobisphenol A type brominated epoxy resin, and the content of bromine accounts for 10 to 14 mass percent of the low brominated epoxy resin. The method has the advantage of improving the tracking voltage resistance of a PCB substrate.

Description

technical field [0001] The invention relates to a method for manufacturing a copper-clad laminate, in particular to an adhesive used in the method. Background technique [0002] With the rapid development of the information industry and the rapid development of electronic technology, electronic and electrical products are becoming more and more integrated, which puts forward higher requirements for the core structure of electronic appliances - PCB board. [0003] The continuous improvement of high-density wiring technology and people's pursuit of the stability of electronic and electrical equipment require PCB substrates to have high reliability, especially for electrical equipment used in harsh environments, which must maintain long-term reliability. [0004] During the use of electrical products, there is current transmission on the wiring of the PCB substrate. Under the action of the electric field, micro-discharge, that is, micro-leakage tracking phenomenon, will occur b...

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): B32B37/12B32B37/06B32B37/10B32B37/14B32B38/16C09J163/00C09J5/06
Inventor 韩涛
Owner SHANGHAI GUOJI ELECTRONICS MATERIALS CO LTD
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