Permanent antistatic polypropylene based on polyethylene wax/polypropylene wax‐grafting sodium acrylate

Abstract

Two types of permanent antistatic agents, polyethylene wax grafted with sodium acrylate (PEW-g-AAS) and polypropylene (PP) wax grafted with sodium acrylate (PPW-g-AAS), were prepared using a solution grafting method and applied to PP to enhance antistatic properties. The grafting degree was determined using back titration method, and structures were confirmed by Fourier transform infrared spectroscopy. The antistatic properties of PEW-g-AAS/PP blends and PPW-g-AAS/PP blends were characterized by surface resistivities (q s ) and volume resistivities (q v ), and a combination of contact angle measurement, scanning electron microscopy, permittivity, and dielectric loss were used to investigate the surface and inner structures of the blends. Results showed that q s and q v of PEW-g-AAS/PP blends dropped significantly (four to seven orders of magnitudes) above a critical addition at 10%, where an electrostatic dissipative network formed; PPW-g-AAS revealed an inferior antistatic performance than PEW-g-AAS due to its better compatibility and smaller content of dispersed phase in the matrix. Furthermore, the antistatic blends treated in 80 C water, 80 C air, and room temperature were investigated, and the results were interpreted from surface energy. Moreover, the addition of antistatic agent had little impact on tensile strength of the PP matrix.

Preparation of antistatic high‐density polyethylene composites based on synergistic effect of graphene nanoplatelets and multi‐walled carbon nanotubes

“…The surface and volume resistivity values of the GNPs/MWCNTs/HDPE composites with various contents of GNPs and MWCNTs are shown in Table . According to the military handbook DOD‐HDBK‐263, the antistatic materials are defined as having surface resistivity value between 10 9 and 10 14 Ω/square . Electrostatic dissipative (ESD) materials are also defined by the industry standards ANSI/EIA‐541‐1988 (USA) and ANSI/ESD S541‐200 (USA) as having a surface resistivity value between 10 5 and 10 12 Ω/square and 10 4 and 10 11 Ω/square, respectively .…”

Preparation and Performance of an Oil-Soluble Polyethylene Wax Particles Temporary Plugging Agent

“…Polyethylene wax (PEW), also known as high molecular wax, has the following characteristics: (1) high melting point, (2) miscible with crude oil at high temperature, (3) controllable particle size, (4) high hardness, and (5) stable chemical properties. Because the melting point of polyethylene wax varies with the molecular weight, the temporary plugging can be carried out at different reservoir temperatures by controlling the molecular weight of polyethylene wax [16][17][18][19][20][21][22][23]. However, the existing production technology can not produce the oil-soluble polyethylene wax particles temporary plugging agent (OPPTA) which can meet the temporary plugging demand of the reservoir with fractures or dominant percolation channels.…”

Preparation and characterization of low environmental humidity sensitive ionic liquid polymer electrolytes

“…The main methods to improve antistatic ability are the addition of antistatic agents, addition of conductive filler, permanent antistatic polymer, surface modification, etc. Antistatic agents are usually composed of an amphiphilic surfactant which can migrate to the surface and enhance the surface conductivity by attracting a layer of water to endow materials the antistatic ability.…”