scholarly journals Printed Circuit Board-Derived Glass Fiber-Epoxy Resin-Supported Mo–Cu Bimetallic Catalyst for Glucose Synthesis

ACS Omega ◽  
2018 ◽  
Vol 3 (12) ◽  
pp. 18499-18509 ◽  
Author(s):  
Sourav Barman ◽  
Rajat Chakraborty
Keyword(s):  
Glass Fiber ◽  
Epoxy Resin ◽  
Printed Circuit Board ◽  
Bimetallic Catalyst ◽  
Circuit Board ◽  
Printed Circuit ◽  
Glucose Synthesis

Air-plasma surface modification of epoxy resin substrate to improve electroless copper plating of printed circuit board

Vacuum ◽  
2019 ◽  
Vol 170 ◽  
pp. 108967 ◽  
Author(s):  
Yan Hong ◽  
Xiangqing You ◽  
Yi Zeng ◽  
Yuanming Chen ◽  
Yunzhong Huang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Epoxy Resin ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Copper Plating ◽  
Air Plasma ◽  
Electroless Copper Plating ◽  
Plasma Surface ◽  
Printed Circuit ◽  
Electroless Copper

Novel Method for Recycle Epoxy Resin from Waste Printed Circuit Board

2014 ◽  
Vol 931-932 ◽  
pp. 90-94 ◽  
Author(s):  
Rapeephun Dangtungee ◽  
Suchart Siengchin ◽  
Chaisiri Kitpaosong
Keyword(s):  
Epoxy Resin ◽  
Printed Circuit Board ◽  
Functional Group ◽  
Maximum Yield ◽  
Solvent System ◽  
High Viscosity ◽  
Circuit Board ◽  
Printed Circuit ◽  
Waste Printed Circuit Board ◽  
Tank System

This research was aimed to study and develop a method for recycle epoxy resin from waste printed circuit board by hot solvent methods and DMSO/NaOH catalytic extraction method. It was found that the pressure tank system, sub set of hot solvent method, variable as following; pressure of 15 bar, temperature of 80 °C, reaction time for 6 h and ethyl acetate solvent presented maximum yield 50.46 %, while DMSO/NaOH catalytic system at 145 °C for 5 h was found maximum yield of 42.97 %. Recycled epoxy resin, the final product from hot solvent and DMSO/NaOH catalytic were showed similarly clear orange-yellow high viscosity. Comparatively, DMSO/NaOH system showed slightly darker color than that of hot solvent system. Functional group at 3000-2850, 1480-1540 and 1020-1040 cm-1, characterized from Fourier transform infrared spectroscopy (FT-IR), indicated that the both product were alkane, aromatic, and phenyl-O-C group, respectively. It could be confirmed that the beneficial functional group of recycled epoxy resin was appeared as a new epoxy resin.

scholarly journals Corrosion Measurement of the Atmospheric Environment Using Galvanic Cell Sensors

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 331
Author(s):  
Daiming Yang ◽  
Hongwei Mei ◽  
Liming Wang
Keyword(s):  
Epoxy Resin ◽  
Printed Circuit Board ◽  
Lower Layer ◽  
Short Circuit ◽  
Salt Spray ◽  
Middle Layer ◽  
Galvanic Cell ◽  
Circuit Board ◽  
Atmospheric Environment ◽  
Printed Circuit

An atmospheric corrosion monitor (ACM) is an instrument used to track the corrosion status of materials. In this paper, a galvanic cell sensor with a simple structure, flexible parameters, and low cost was proposed for constructing a novel ACM, which consisted of three layers: the upper layer was gold, used as the cathode; the lower layer was corroded metal, used as the anode; and the middle layer was epoxy resin, used to separate the cathode and anode. Typically, the anode and epoxy resin were hollowed out, and the hollow parts were filled with electrolyte when it was wet to form a corrosive galvanic cell. Specifically, the corrosion rate was obtained by measuring the short circuit current of the cell. The sensor was made of a printed circuit board (PCB) or flexible printed circuit (FPC) and a metal coupon, which allowed for early control of the electrical parameters (including sensitivity and capacity) and could be combined with various metals. Additionally, the sensor feasibility was studied in water droplet experiments, during which the corrosive current changed with the electrolyte evaporation. The sensor practicability was also verified in a salt spray test, and the electric charge was compared using the thickness loss of bare coupons. A contrast test was also conducted for the corrosivity of different sensors made of aluminum, iron and copper.

Hot Solvent Extraction Method for Recycle Epoxy Resin in Waste Printed Circuit Board with Polyethylene Glycol

2016 ◽  
Vol 857 ◽  
pp. 524-529
Author(s):  
Rapeeporn Srisuk ◽  
Chaisiri Kitpaosong ◽  
Suchart Siengchin ◽  
Rapeephun Dangtungee
Keyword(s):  
Polyethylene Glycol ◽  
Epoxy Resin ◽  
Extraction Method ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Chemical Extraction ◽  
Metal Part ◽  
Printed Circuit ◽  
Waste Printed Circuit Board ◽  
Ft Ir

Waste printed circuit board (WPCB) from waste electrical and electronic equipment (e-waste) can be recycled a precious metal part while a non-metal part was burned or landfilled, which normally generated toxic substance of organic component to environment. The research work aimed to recycle epoxy resin by hot solvent chemical extraction. Polyethylene glycol 400 (PEG400) and ethylene glycol (EG), at 180°C, were mainly using as solvent and sodium hydroxide (NaOH) as a catalyst. Extraction method was reflux technique. The thermogravimetric analysis (TGA), Specific viscosity, and Fourier transform infrared spectroscopy (FT-IR) methods were investigated and discussed. The TGA result showed that the organic composition was 40.73%wt. The maximum of percent yield was 97.89% at non-metal WPCB/PEG, equal to 0.05 g/ml. Moreover, the extracted product presented a functional group close to virgin epoxy resin according to the peak of FT-IR data. The recycled epoxy resin could be formed well on specimen by virgin epoxy resin and hardener filled with 50% recycled extraction product.

Effect of AlN content on the performance of brominated epoxy resin for printed circuit board substrate

2007 ◽  
Vol 45 (13) ◽  
pp. 1662-1674 ◽  
Author(s):  
K. C. Yung ◽  
B. L. Zhu ◽  
J. Wu ◽  
T. M. Yue ◽  
C. S. Xie
Keyword(s):  
Epoxy Resin ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Brominated Epoxy Resin

The separation of waste printed circuit board by dissolving bromine epoxy resin using organic solvent

2013 ◽  
Vol 33 (2) ◽  
pp. 484-488 ◽  
Author(s):  
P. Zhu ◽  
Y. Chen ◽  
L.Y. Wang ◽  
M. Zhou ◽  
J. Zhou
Keyword(s):  
Organic Solvent ◽  
Epoxy Resin ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Waste Printed Circuit Board
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