rotary dryer and air quality

rotary dryer and air quality

Study on the solid-state shear pulverization process in ...

Study on the solid-state shear pulverization process in single screw extruder illustrated by polyethylene as an example March 2004 Polimery -Warsaw- 49(3):202-207

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US5704555A - Single-screw extruder for solid state shear ...

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 are applied by a single cylindrical or conical mesh screw.

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Pulverization of rubber granulates using the solid-state ...

2001-4-30  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.

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EP0825919B1 - Single-screw extruder and process for solid ...

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 are applied by a single cylindrical or conical mesh screw.

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single screw solid state pulverization

single screw solid state pulverization Green composites of polypropylene and eggshell: Effective ... Here, green composite materials of PP with 5–40 wt% unmodified ES shards of several centimeters in size are directly processed using continuous, singlestep solidstate shear pulverization (SSSP).

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Recycling of elastomeric materials using the solid state ...

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 ...

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Pulverization of rubber using modified Solid State Shear ...

A twin screw conical counter-rotating extruder, a mixer head with roller blades and a single screw extruder attached to a C.W. Brabender PL2000 Plasti-Corder were utilized as pulverization ...

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Experimental and theoretical analyses of pulverization and ...

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.

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Investigation of Solid-State Shear Pulverization ...

2020-10-13  Solid-state shear pulverization (SSSP) is a continuous solid-state milling technique in which polymer/nanofiller blends are pulverized within a modified twin-screw extruder operating at sub-ambient temperatures The SSSP method can be tailored to specific applications by controlling the numerous processing parameters. Additionally, solid-state shear

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Well-mixed blends of HDPE and ultrahigh molecular

2014-9-15  Solid-state shear pulverization uses a twin-screw melt extruder modified with a cooling system to maintain the polymer in the solid state , , , , , , , , , , , . This process is accompanied by high shear stresses and compressional forces that cause repeated fragmentation and fusion of material; conditions are tuned by feed rate, screw speed ...

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Pulverization of rubber granulates using the solid-state ...

2001-4-30  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.

Get Price

Study on the solid-state shear pulverization process in ...

Study on the solid-state shear pulverization process in single screw extruder illustrated by polyethylene as an example March 2004 Polimery -Warsaw- 49(3):202-207

Get Price

Recycling of elastomeric materials using the solid state ...

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 ...

Get Price

solid state shear pulverization sssp - uniekebruidstaarten.nl

Solid-state shear pulverization (SSSP), which relies on a modified twin screw extruder to process materials in the solid state, is designed to overcome these limitations. Repeated fragmentation and fusion steps accompanying SSSP lead to intimate mixing and compatibilization which are difficult to be achieved in conventional melt mixing.

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Pulverization of Rubber Using the SSSE Process

2007-10-3  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).

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Solid-State Shear Pulverization Klementina Khait ...

2001-4-30  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 ...

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Solid state shear extrusion pulverization - Illinois ...

15. A process for solid state shear extrusion pulverization of rubber according to claim 12 wherein said fine powder is fluidized in a gas stream for removal from said screws. 16. A process for solid state shear extrusion pulverization of rubber according to claim 15 wherein said gas stream is

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[PDF] Dispersion and Property Enhancements in Polyolefin ...

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.

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Cellulose nanocrystal/polyolefin biocomposites prepared

2015-3-26  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-

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Processing‐structure‐property relationships in solid‐state ...

2012-3-27  Abstract Solid‐state shear pulverization (SSSP) is a unique processing technique for mechanochemical modification of polymers, compatibilization of

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Analysis of Rubber Particles Produced by the Solid State ...

2000-5-1  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.

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solid state shear pulverization sssp - uniekebruidstaarten.nl

Solid-state shear pulverization (SSSP), which relies on a modified twin screw extruder to process materials in the solid state, is designed to overcome these limitations. Repeated fragmentation and fusion steps accompanying SSSP lead to intimate mixing and compatibilization which are difficult to be achieved in conventional melt mixing.

Get Price

Dispersion and Property Enhancements in Polyolefin/Soy ...

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

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Pulverization of Rubber Using the SSSE Process

2007-10-3  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).

Get Price

Solid-State Shear Pulverization Klementina Khait ...

2001-4-30  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 ...

Get Price

Dispersion and Property Enhancements in Polyolefin/Soy ...

2015-4-3  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.

Get Price

Cellulose nanocrystal/polyolefin biocomposites prepared

2015-3-26  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-

Get Price

Processing‐structure‐property relationships in solid‐state ...

2012-3-27  Abstract Solid‐state shear pulverization (SSSP) is a unique processing technique for mechanochemical modification of polymers, compatibilization of

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Polymer Graphite Nanocomposites: Effective Dispersion

2013-5-8  made by single-screw melt extrusion and (d) PP/2.5 wt % graphite nanocomposite fabricated in the solid state by SSSP. Field-emission scanning electron micrograph of (e) PP/2.5 wt % graphite nanocom-posite fabricated in the solid state by SSSP. Note: all graphite used in making hybrids and nanocomposites was as-received graphite (ARG). Figure 2.

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Some Aspects of a Plastics Pulverization Technology by ...

2000-3-1  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 ...

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