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.

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.

Studies on the Reuse of Waste Printed Circuit Board as an Additive for Cement Mortar

2005 ◽  
Vol 40 (3) ◽  
pp. 645-656 ◽  
Author(s):  
Bong-Chan Ban ◽  
Jong-Yoon Song ◽  
Joong-Yeon Lim ◽  
Soo-Kyoon Wang ◽  
Kwang-Guk An ◽  
...  
Keyword(s):  
Printed Circuit Board ◽  
Cement Mortar ◽  
Circuit Board ◽  
Printed Circuit ◽  
Waste Printed Circuit Board

Waste Printed Circuit Board (PCB) Recycling Techniques

2017 ◽  
Vol 375 (2) ◽  
Author(s):  
Chao Ning ◽  
Carol Sze Ki Lin ◽  
David Chi Wai Hui ◽  
Gordon McKay
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Waste Printed Circuit Board ◽  
Recycling Techniques

An impact crushing dynamic model of waste printed circuit board particles

2012 ◽  
Vol 39 (8) ◽  
pp. 3611-3630 ◽  
Author(s):  
Shibing Hou ◽  
Yunxia He ◽  
Deming Yang ◽  
Zhenming Xu
Keyword(s):  
Dynamic Model ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Waste Printed Circuit Board ◽  
Impact Crushing
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