Pre⁃plating properties of ABS treated with non⁃thermal plasma

doi:10.19491/j.issn.1001-9278.2022.08.013

Abstract

Abstract:

The surface of acrylonitrile?butadiene?styrene （ABS） resin was etched through non?thermal plasma surface treatment. A palladium?free sensitization and activation solution composed of vinyltrimethoxysilane，（3?mercaptopropyl）trimethoxysilane， and 3?triethoxysilyl?1?propanamine was used for the surface nickel plating of ABS. The properties of electroplated ABS were investigated using Fourier?transform total reflectance infrared spectroscopy， contact angle measuring instrument， and scanning electron microscope. A 90° adhesive strength testing method was adopted to measure the adhesion between the plastic and metal layer according to the national standard GB/T 9286—2021. The results indicated that the optimal pretreatment effectiveness was achieved for ABS electroplating at a treatment time of 300 s and a power of 600 W. As a result， the substrate bonding strength reached 0.94 kN/m.

Key words: non?thermal plasma, palladium?free activation, electroplating, pretreatment

CLC Number:

TQ322.4⁺2

OUYANG Yufei, WANG Huashan. Pre⁃plating properties of ABS treated with non⁃thermal plasma[J]. China Plastics, 2022, 36(8): 80-86.

Figures/Tables 11

Fig.1. Electroplating pretreatment and electroless plating process of ABS

Fig.2. Contact angle change curve

Fig.3. SEM images of ABS treated at different conditions

Fig.4. ATR?FTIR pattern of ABS before and after low temperature plasma treatment

Fig.5. XPS spectra of ABS before and after low temperature plasma treatment

Fig.6. EDS images of ABS

Fig.7. Weight change curves of ABS after activation

Fig.8. Bonding strength of ABS nickel coating at different processing power

Fig.9. Photo of electroless plated ABS at different processing power

样品	处理条件	镀层外观
b	200 s、400 W	很差，脱落严重
c	300 s、400 W	很差，起泡脱落
d	300 s、500 W	较差，镀层起泡
e	300 s、600 W	良好，镀层平整
f	300 s、700 W	很差，起泡脱落
g	400 s、500 W	较差，镀层起泡
h	400 s、600 W	很差，起泡脱落

Tab.1. Quality and appearance of electroless nickel plating at different treatment conditions

Fig.10. Photos of electroless plated ABS at different treatment conditions

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