single screw solid state pulverization

A method of making polymeric particulates wherein polymeric scrap material, polymeric material and mixtures thereof are supplied to intermeshing extruder screws which are rotated to transport the polymeric material along their length and subject the polymeric material to solid state shear pulverization and in-situ polymer compatibilization, if two or more incompatible polymers are present.

 · A single screw extruder was used to study the effect of the metering screw section geometry i.e., the shearing on the pulverization. The extruder exhibited a L/D ratio of 25:1 and 18 mm screw diameter. Three screws were studied having a channel depth in the feed section of 3.65 mm each and channel depth in the metering section of 0.73, 1.2 and ...

Single-screw extruder for solid state shear extrusion pulverization. ... A method for improving the throughput of solid-state shear pulverization and solid-state melt-extrusion devices may include the addition of a heat absorbing material with a mixture of polymeric materials in an extruder.

Solid-State Shear Pulverization K. A. Iyer, J. M. Torkelson* Macromol. Mater. Eng. 2015, 300, 772––784 A novel processing technique combining single-screw extrusion (SSE) and solid-state shear pulverization (SSSP) is employed for producing polyolefi n/soy fl our biocom-posites with synergistic property enhance-ments. In comparison, SSE ...

the auger collator can collect coal like a screw. for the coal storage, this coal crusher machine is suited for the coal with high moisture (15water). this type Wo/2009/157335 Crushing Roller a crushing roller for a vertical-type roller mill capable of effectively and efficiently in the crushing roller (10) used in a …

 · Called Solid-State Shear Pulverization (S3P), this innovative process produces polymeric powders with unique physical properties not found in the output of conventional size-reduction methods…. This technology, which utilizes a pulverizer based on a modified co-rotating twin-screw extruder…, has profound implications for both the creation ...

Single Screw Solid State Pulverization Cadia Hill Gold Mine. Mill Grinding - Wikipedia. A mill is a device that breaks solid materials into smaller pieces by grinding crushing or cutting. Such comminution is an important unit operation in many processes.There are many different types of mills and many types of materials processed in them ...

 · This information was used as a guide to obtain optimum operating conditions and design parameters for optimum design of the solid state shear extrusion (SSSE) pulverization process [H. Arastoopour, Single Screw Extruder for Solid State Shear Extrusion Pulverization, U.S. Patent No. 8,101,468 (1998)].

An apparatus for solid state shear extrusion pulverization of a polymeric material comprising an elongated hollow barrel having a feed zone, a heating zone adjacent to the feed zone, a powder formation zone adjacent to the heating zone, and a powder discharge zone adjacent to the powder formation zone. At least one screw is housed within the elongated hollow barrel.

 · Processing‐structure‐property relationships in solid‐state shear pulverization: Parametric study of specific energy. Philip J. Brunner. Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208‐3108.

An apparatus for solid state shear extrusion pulverization of a polymeric material comprising an elongated hollow barrel having a feed zone, a heating zone adjacent to the feed zone, a powder formation zone adjacent to the heating zone, and a powder discharge zone adjacent to …

 · Solid state shear extrusion pulverization: 1998-04-28: Ivanov: 5704555: Single-screw extruder for solid state shear extrusion pulverization and method: 1998-01-06: Arastoopour: 5397065: Solid state shear extrusion pulverization: 1995-03-14: Shutov et al. 5356054: Wagon with cutting, mixing and dispensing functions for fodder and grass or straw ...

 · Solid-state shear pulverization (SSSP) is a novel processing method, which utilizes a modified twin-screw extruder that operates under near-ambient temperature conditions. During SSSP, polymers are processed in their solid state using high compressional and shear forces that cause repeated fragmentation and fusion of the material.

Recycling of elastomeric materials using the solid state shear extrusion (SSSE) pulverization process ... Abstract. A single screw extruder was used to pulverize vulcanized natural rubber, ground tire tread and polyurethane foam granulates in the solid state into fine particles under high compression and shear. This process, known as Solid ...

Solid-state shear extrusion pulverization method of rubber waste in extruders is also proposed (Bilgili et al. 2000) based on the concept of pulverization proposed for plastics (Khait and Torkelson 1999).Under simultaneous action of the compressive shear and torsion due to the screw rotation

Biocomposites of low-density polyethylene (LDPE) and polypropylene (PP) with 5–40 wt% soy flour (SF) are produced by two-step single-screw extrusion (SSE) followed by solid-state shear pulverization (SSSP). The SSE-SSSP approach overcomes limitations with melt mixing, e.g poor SF dispersion and degradation, and limitations with single-step SSSP.

 · Nanoblends, in which dispersed-phase domains exhibit length scales of order 100 nm or less, are made using a continuous, industrially scalable, mechanical process called solid-state shear pulverization (SSSP).An 80/20 wt% polystyrene (PS)/poly(methyl methacrylate) (PMMA) blend processed by SSSP and consolidated by platen pressing, without melt processing, exhibits a quasi …

 · Krishnan A. Iyer, John M. Torkelson, Green composites of polypropylene and eggshell: Effective biofiller size reduction and dispersion by single-step processing with solid-state shear pulverization, Composites Science and Technology, 10.1016/j pscitech.2014.07.029, 102, …

A novel processing technique combining single-screw extrusion (SSE) and solid-state shear pulverization (SSSP) is employed for producing polyolefin/soy flour biocomposites with synergistic property enhancements. In comparison, SSE and melt-mixed composites show severe particle agglomeration resulting in poor material properties.

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 · Abstract: A process and apparatus for single screw solid state shear extrusion pulverization of polymeric materials in which the polymeric materials are heated to a temperature suitable for forming a continuous thin film of said polymeric material, and then cooled, and normal and shear forces sufficient to form powder of the polymeric material ...

 · By Jan H. Schut. Solid State Shear Pulverization, which chills a co-rotating twin-screw extruder below the softening temperature of plastic rather than allowing it to melt, is finally commercial after more than 20 years of R&D. Zzyzx Polymers LLC, Allentown, PA (), started up in January 2015 reportedly using the first commercial SSSP technology, according to a paper …

Hamid Arastoopour is Henry R. Linden Professor of Engineering and Director of Wanger Institute for Sustainable Energy Research (WISER) at Illinois Institute of Technology (IIT) in Chicago, Illinois. Since 1985, he has been a member of the chemical engineering faculty at IIT, where he served as chairman of the department from 1989 to 2003, and Dean of the Armour College of Engineering from 2003 ...

 · Here, we investigate the potential of using a single-step, continuous, and industrially scalable process called solid-state shear pulverization (SSSP),,,,,,,,,,,,,,,, to produce well-dispersed, green composite materials of PP/ES with significant property enhancements (Fig. 1b). Although the current study employs a lab-scale/pilot-plant apparatus, polyolefins have been processed ...

 · Biocomposites of low-density polyethylene (LDPE) and polypropylene (PP) with 5–40 wt% soy flour (SF) are produced by two-step single-screw extrusion (SSE) followed by solid-state shear pulverization (SSSP). The SSE-SSSP approach overcomes limitations with melt mixing, e.g poor SF dispersion and degradation, and limitations with single-step SSSP.

Polymer processing techniques make and shape many of the products we use in our daily lives. Solid-state shear pulverization (SSSP) is a novel extrusion technique that has been shown to produce materials that have been historically difficult to manufacture, and has opened a new door to unique polymer products. The process employs cold temperatures and pulverizes solid plastics into fine ...

After short-residence-time single-screw extrusion, the pulverized blend exhibits spherical dispersed-phase domains with a number-average diameter of 155 nm. Thus, SSSP followed by certain melt-processing operations can yield nanoblends. ... T1 - Achievement of quasi-nanostructured polymer blends by solid-state shear pulverization and ...

 · A single screw extruder was used to pulverize rubber granulates at high shear and compression without using cryogenic fluid for cooling. This process, solid-state shear extrusion (SSSE), is based on the large compressive shear deformation of rubber granulates, which results in the storage of a large amount of strain energy and the formation of cracks.

The present invention relates generally to the extrusion of polymer composites and/or nanocomposites, and more specifically, to exfoliation and/or dispersion of aggregated filler particles in polymer composites and/or nanocomposites using solid-state shear pulverization and melt-state extrusion in a single, continuous apparatus.

Using the Solid State Shear Extrusion (SSSE) Process: Part I. Process Concepts and Characteristics," Powder Technol. 115, 265–276 (2001). E. Bilgili, H. Arastoopour, B. Bernstein,"Analysis of Rubber Particles Produced by the Solid State Shear Extrusion Pulverization Process," Rubber Chem. Technol.73, 340–355 (2000).

1.2. Solid-state shear pulverization: A new strategy for producing polyolefin/CNC composite materials Here, we employ a single-step, solventless, continuous and industrially scalable process called solid-state shear pulverization (SSSP) [14,15,19,89e103] to produce green composites of poly-

 · Free Online Library: Processing-structure-property relationships in solid-state shear pulverization: parametric study of specific energy.(Report) by "Polymer Engineering and Science"; Engineering and manufacturing Science and technology, general Chemical processes Research Polymer composites Chemical properties Composition Identification and classification Production processes …

A two-stage process for recycling of vulcanized rubber was proposed. In the first stage, the vulcanized rubber was shredded into granulates, and then the granulates were pulverized into fine particles using a single screw extruder in the solid state shear extrusion (SSSE) process. In the second stage, the produced rubber powder was compression molded to produce new items.

Single-screw extruder for solid state shear extrusion pulverization and method. H Arastoopour. US Patent 5,704,555, 1998. 45: ... Analysis of rubber particles produced by the solid state shear extrusion pulverization process. E Bilgili, H Arastoopour, B Bernstein. Rubber chemistry and technology 73 (2), 340-355, 2000. 39:

 · Vulcanized natural rubber was pulverized using a single screw extruder in a non-cryogenic Solid State Shear Extrusion (SSSE) process where rubber granulates were subjected to high compressive and shear stresses. The produced particles had diameters ranging from 40 to 1700 µm.