Page 55 - 《橡塑技术与装备》英文版2026年2期

THEORY AND RESEARCH

(BNE-200): Purity 99%, Changchun Petrochemical Co., Ltd.;
Tetrahydrofuran: Analytical Reagent, Tianjin Kemio Chemical
Reagent Co., Ltd.
2.2 Equipment and instruments
Figure 2 Bis(2-hydroxyphenyl) ether
Electronic balance: BD202, Mettler Toledo Instruments
Facing the escalating performance demands for high- (Shanghai) Co., Ltd., oil bath (DF-101S), rotary evaporator
frequency and high-speed electronic packaging materials, (YRE-2000B), vacuum drying oven (DZF-6050), blast
traditional circuit substrate materials are facing technological drying oven (DHG-9070A), Fourier transform infrared
obsolescence due to insufficient dielectric performance spectrometer (FTIR), differential scanning calorimeter (Q20,
capabilities. Polyphenylene ether (PPE) resin, with its unique TA Instruments, USA), Ubbelohde viscometer, 25 mL pipette,
combination of performance advantages—including excellent two 250 mL beakers, ear syringe, intelligent magnetic stirrer,
dielectric stability, low moisture absorption rate, and superior Hei-Tec, Heidolph, Germany, water circulation vacuum pump
thermomechanical properties—has become the preferred (SHZ-D(III)): Gongyi Yuhua Instrument Co., Ltd.; rotary vane
substrate for the new generation of electronic packaging vacuum pump: 2XZ-2, Zhejiang Huangyan Ningxi Vacuum
materials. However, conventional high molecular weight Pump Factory.
PPE exhibits inherent defects such as high melt viscosity, 2.3 Preparation process of test samples
poor rheological properties, lack of thermosetting properties, Synthesis of PPO-2OH: Install a condensation reflux
and insufficient interfacial compatibility, which lead to apparatus, weigh 20.0 g of PPO, BPO with concentrations of
processing difficulties and severely restrict its processing 10%, 8%, and 5%, and 3.0 g of bisphenol A, and pour them
applicability in the field of electronic packaging materials. To into a three-neck flask containing 200 mL of xylene solvent.
address this technological bottleneck, low molecular weight Stir until dissolved. During the reaction process, continuously
PPE modified materials exhibit unique advantages: while introduce argon gas, heat up to 85℃ , and allow the reaction to
retaining the excellent properties of the base material, they proceed for 6 hours before terminating it.
significantly improve processing fluidity through molecular Post-treatment method: After the reaction is complete,
weight regulation (with a melt index increased by 3 to 5 orders transfer the cooled reaction mixture to a separatory funnel
of magnitude), and simultaneously introduce crosslinkable and mix it with an aqueous solution of sodium bisulfite
functional groups to achieve thermosetting properties. This (5% by mass). Stir thoroughly for 15 minutes, and after the
breakthrough development has garnered widespread attention reagents have separated into layers, drain the lower aqueous
in the field of advanced packaging. layer from the bottom of the separatory funnel. Then, add an
aqueous solution of sodium carbonate (5% by mass) and stir
2 Experimental part for another 15 minutes. Allow the mixture to stand for a while,
2.1 Raw materials then remove the lowest aqueous layer. After washing three
PPO: Mitsubishi Engineering Plastics Co., Ltd.; times with deionized water, remove the aqueous layer from the
Benzoyl Peroxide (BPO): Analytical Reagent, Chengdu organic layer, extract the upper liquid, dry the mixture using
Kelong Chemicals Co., Ltd.; Bisphenol A: Shanghai Aladdin anhydrous magnesium sulfate, filter through a funnel, and
Biochemical Technology Co., Ltd.; Sodium Sulfite: Analytical obtain PPO-2OH dissolved in xylene.
Reagent, Chengdu Kelong Chemicals Co., Ltd.; Sodium The reaction solution processed as described above
Carbonate and Xylene: Chengdu Kelong Chemicals Co., was subjected to rotary evaporation using a rotary evaporator
Ltd.; Anhydrous Magnesium Sulfate: Analytical Reagent, (with a vacuum degree of 0.08 MPa and a temperature range
Chengdu Kelong Chemical Reagent Factory; Deionized of 75℃ to 90℃ ) to remove the xylene solvent. The polymer
Water; 2-Ethyl-4-methyl Imidazole (2E4MZ): Chemical solution was concentrated until it became a yellow viscous
Reagent, Tianjin Chemical Reagent Co., Ltd.; Epoxy Resin substance, indicating the end of the rotary evaporation process.

Vol.52，2026 ·11·