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SMTnet Express, August 24, 2017, Subscribers: 30,744, Companies: 10,648, Users: 23,699

Technical Library

Development of Halogen Free, Low Loss Copper-Clad Laminates Containing a Novel Phosphonate Oligomer

Dr. Lawino Kagumba - FRX Polymers Inc.., Yang Zhong Qiang, Huang Tian Hui, You Jiang, Douglas Sober - Shengyi Technology Co., Ltd.

With the rapid development of the information industry, increasing attention is being paid to the dielectric performance of base materials including copper-clad laminates (CCL) and prepregs. In addition to the increasingly high performance requirements of CCL's, the present global attention to less toxic products is leading to an increase in the use of halogen-free flame retardants in electronics. (...)

This paper introduces a new phosphonate oligomer which can be used as a reactive flame retardant in epoxy based resin systems. Suitable conditions for the complete reaction between the phosphonate oligomer and epoxy resin are described and the resulting halogen-free laminates with improved properties such as low Df, low coefficient of thermal expansion (CTE), high peel strength, and good toughness are presented.

Forum search results for related keywords: laminates.

SMT / PCB Products


Selective Soldering




Material Handling...

Count On Tools

Solder Paste Stencils

BEST, Inc.

Hand Assembly

Virtual Industries

Surface Finish

Nordson March


BTU International


GPD Global




VJ Electronix


Precision PCB Services


PDR America




Wave Soldering


SMT / PCB Equipment Auctions

Complete Closure 115,000 SF Facility

Universal, YesTech, MPM, Terradyne and more...

September 19 - 20 | X-Line

Electronic Equipment Mart

Universal Instruments GSM 2

Flexible Mounters

ECM Equipment Sales, Inc.

Leica HG 7900

Repair/Rework Equipment

AdoptSMT Europe GmbH

BTU Pyramax 98A

Reflow Ovens

Recon Inc

Panasonic CM401

Chipshooters / Chip Mounters

Capital Equipment Exchange

DEK Horizon 03iX

Screen Printing Equipment

IBE SMT Equipment

Universal Instruments GC120

Pick and Place Equipment/Feeders

KD Electronics Ltd.

Events Calendar

SMTA International Conference & Exhibition | September 19 - 20 | SMTA

IPC & WHMA Wire Harness Manufacturing Conference | October 3 | IPC

NEPCON South China - SMT and Electronics Manufacturing Expo | August 29 - 31 | Reed Exhibitions

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

PCB Cleaning Webinar Series | ZESTRON Corporation

Career Center

Manufacturing Engineering Manager

Eden Prairie, MN

Logic PD, Inc.


Dorval (Montreal), Canada

Cancino Technologies Corporation

Senior Design Engineer

Murphy, NC

Aegis Power Systems

Industry Associations Events


SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies.

Membership Info | SMTA Certification | Bookstore | Upcoming Events


IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly.

Membership Info | Training & Certification | Online Store | Upcoming Events

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.


Used PCB Assembly Equipment - CE Exchange

Adjustable SMT Carrier - MB Manufacturing

Kyzen Free PCB Cleaning Audit

Unused Equipment? - let BajaBid turn your EXCESS ASSETS into cash!

NEW PDR Products for IR Thermal Test and Rework

KD Electronics - High quality SMT nozzles, feeders, cutters, filters, etc

Experience the Blackfox Difference - Premier IPC Training & Certification Center

Nitrogen Capable SMD & BGA Rework Station

Pre-Owned SMT - Siplace, DEK, Asys, Mydata, Rehm and more...

Fully automatic selective soldering stations - 1 Click SMT - Inline with multiple modules, or standalone for cost effective soldering solutions. - Rework Tools

Vacuum Tweezers - pick up small components with ease

HELLER - Choose an Oven for Your Reflow Needs

KIC - Making Reflow Ovens Smarter

ii-Feed intelligent pick and place feeder

Speedprint SP700avi inline SMT screen printer

Late Model SMT equipment ONLINE AUCTIONS

Quality Pre-Owned SMT Eequipment - Robo-Tek

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