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Monomers, Polymers, and Plastics
Published in James G. Speight, Handbook of Petrochemical Processes, 2019
The list of chemicals produced by the petrochemical industry includes, but is not limited to (i) synthesis gas-based products including ammonia, methanol, and their derivatives; (ii) ethylene and derivatives; (iii) propylene, including on-purpose and methanol-based routes and derivatives; (iv) C4 monomers; aromatics; oxides, glycols, and polyols and derivatives; (v) chlor-alkali, ethylene dichloride, vinyl chloride monomer, and polyvinyl chloride (PVC); (vi) polyolefins—solution, slurry and gas phase; alpha olefins and poly alpha olefins; polyethylene terephthalate (PET)—bottles and fiber; polystyrene (PS)—general purpose, high impact and expandable; (vii) styrene derivatives—such as acrylonitrile butadiene styrene, acrylonitrile-styrene, and acrylonitrile styrene acrylate; and (viii) specialty polymers including poly-oxymethylene, super-absorbent polymers, and poly-methylmetacrylate; and nylon 6, 6-6, and intermediates.
Numerical simulation on structure and anti-explosion performance of new ASA building plates
Published in Ai Sheng, Energy, Environment and Green Building Materials, 2015
H.J. Wang, W.Z. Liao, M. Li, S.J. Shen
With the rapid development of tall and super-tall buildings in China, and the deepening reform of wall, the demand of new building materials for light weight, high strength, environmental protection and energy conservation continuously increases fast. This series board of ASA (Acrylonitrile styrene acrylate copolymer) belonging to new architecture board is the key part of the light steel residential systems. The new type of lightweight ASA compound wall plates with insulation properties used double combinations: the one layer embedded in the steel framework, which works with the framework, not only constitute the lateral force resisting system architecture, but also significantly reduce the amount of steel structure of architecture; the other layer that mounted on the outside of the steel frame, effectively prevents the “cold bridge” problem appearing in the steel frame of exterior wall[1]. And the ASA plates with industrial solid wastes as their main raw material, made by the physical foaming process, are the typical low carbon environmental protection material in today’s advocacy of green building, energy conservation and emissions reduction[2]. This paper referred to the data on bearing capacity of ASA plates tested by
Applications of High-Intensity Ultrasonics Based on Mechanical Effects
Published in Dale Ensminger, Leonard J. Bond, Ultrasonics, 2011
Dale Ensminger, Leonard J. Bond
Kolb [75] lists typical plastics and their weldability by ultrasonic means. In addition, this reference includes recommended joint designs for best bonding. A list of materials and their welding properties can be obtained from manufacturers of ultrasonic bonding equipment. Materials that have excellent ultrasonic bonding properties in both the near field and the far field as well as for staking include polystyrene, methyl methacrylate, methyl pentene, polycarbonate, acrylonitrile–styrene–acrylate (ASA), and a copolymer of styrene and acrylonitrile (SAN). Materials with excellent near-field bonding properties and staking properties as well as good far-field properties include acrylonitrile–butadiene–styrene (ABS), acrylics, polyimide, and polyarylsulfone. Butyrates, nylon, polysulfone, acetal, phenoxy, and structural foam (poly-olefin) display excellent staking qualities, good near-field bonding qualities, and good to fair far-field characteristics. Nylon fibers can be bonded; however, in oriented fibers, ultrasonic bonding produces a disruption of the molecular orientation, thus weakening the material at the joint.
Comparison of laboratory performance of two superpave binders mixed with two modifiers
Published in Road Materials and Pavement Design, 2020
The two selected modifiers used were Acrylate Styrene Acrylonhrtilrei (ASA) polymer and nano-aluminium oxide (Al2O3) at three different percentages of each. Both are available in the local market and they are weather resistant. The advantages of using ASA are its higher resistance to environmental stress cracking, higher stiffness, higher impact resistance, and better ability to withstand extremes of weather (Fink, 2010).