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  • Hanser Publications

    2015-3-10 · Hanser Publications

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  • One-Step Twin-Screw Extrusion Process to Fibrillate

    2021-3-12 · Bio-based wood materials are preferable for composites because of their sustainability, but adequately dispersing wood fibers in polymers can be difficult and costly. Our approach was to pretreat the wood with a green solvent system, allowing the composite to be extruded in a single step, simplifying the process, and reducing the overall cost. This study investigates the fibrillation of ...

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  • (PDF) Extrusion Pretreatment of Lignocellulosic

    This article presents a theoretical and experimental study on the measurement and prediction of die pressure in the extrusion process of wood-plastic composite (WPC).

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  • (PDF) Theoretical and Experimental Study on Die

    2017-12-1 · Extrusion process on wet lignocellulosic biomass for producing biogas or bioethanol, consisting in a single or twin-screw machine coupled to a microwave process at high temperature (150–250 °C) and pressure where thermal and possibly chemical hydrolysis (if catalyst is added) takes place, followed by anaerobic fermentation.

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  • Extrusion as a pretreatment for lignocellulosic

    Wood and lignocellulosic-based material components are explored in this review as functional additives and reinforcements in composites for extrusion-based additive manufacturing (AM) or 3D printing. The motivation for using these sustainable alternatives in 3D printing includes enhancing material properties of the resulting printed parts, while providing a green alternative to carbon or glass ...

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  • Material Extrusion Additive Manufacturing of Wood

    Bioconversion of lignocellulosic biomass to bioethanol has shown environmental, economic and energetic advantages in comparison to bioethanol produced from sugar or starch. However, the pretreatment process for increasing the enzymatic accessibility and improving the digestibility of cellulose is hindered by many physical-chemical, structural and compositional factors, which make these ...

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  • IJMS | Free Full-Text | Extrusion Pretreatment of ...

    Melt pumps is widely used in plastic, resin, rubber, chemical fiber products, extrusion molding. Reactive Extrusion: Principles and Practice (Hanser The Use Of Extruder. 1. Planning applicability. most of them lack single-machine production, but are matched with production lines for operation.

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  • Extruder Principles And Operation Extruder Principles

    Metal Extrusion and Drawing Processes and Equipment 360 Introduction 360 The Extrusion Process 362 15.3 Hot Extrusion 364 15.4 Cold Extrusion 368 15.5 Extrusion Defects 371 15.6 Extrusion Equipment 373 15.7 The Drawing Process 373 15.8 Drawing Practice 375 15.9 Drawing Defects and Residual Stresses 377 15.10 Drawing Equipment 377 Bibliography ...

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  • Met.pdf [z4084gk68xqx] - doku.pub

    Chemical process dynamics and controls-book 1. Jose Guti. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 25 Full PDFs related to this paper. READ PAPER. Chemical process dynamics and controls-book 1. Download. Chemical process dynamics and …

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  • Manufacturing Engineering and Technology 6th

    The machine is highly specialized, with very high stiffness (to minimize deflections, as well as vibration and chatter, during machining) and is operated in a room where the ambient temperature is controlled to within 1°C in order to avoid thermal distortions of the machine. Types of Production.

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  • Handbook of Plastics Joining: A Practical Guide - PDF

    For pipe sizes over 50 mm (1.97 inches) OD, the socket fusion process can be carried out on a manual butt fusion welding machine. The normal heater plate is removed and replaced by one with a central fixing hole, which allows attachment of the socket and spigot tools to either side of the plate.

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  • Environmentally Conscious Materials and Chemicals ...

    The process requires water as a drilling fluid, and may use additives in the fluid. Sample excavations may be small test pits sunk with a backhoe, trenches cut with a bulldozer, or large, bulk sample pits developed by drilling and blasting. The environmental consequences of sampling vary considerably among the various activities of sampling.

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  • Particleboard | SpringerLink

    The idea to create particleboard has a long history, but the term “particleboard” was not used for a long time. Within about 90 years many patents were granted, predominantly for “artificial board”....

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  • Characterization of ultrafine cellulose-filled high ...

    2021-4-18 · The specimens were prepared at 5 mm x 13 mm x 65 mm. These specimens were clamped to the bottom of the test fixture. The hammer of this test machine was 2.75 J, and this hammer was released from a specified height. The depth under the sample width and the notch were entered before the machine recorded the energy required to break the test sample.

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  • Properties of high density polyethylene – Paulownia

    2021-6-4 · Abstract. Paulownia wood (PW) flour was evaluated as a reinforcement for thermoplastic composites. Composites of high-density polyethylene in pellet form (HDPE), 25% by weight of PW, and either 0% or 5% by weight of maleated polyethylene pellets (MAPE), were produced by twin screw compounding followed by injection molding.

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  • Bio-based composites from agricultural wastes:

    2019-8-26 · Three types of fillers were applied: sawdust, fiber from a Kraft process, and fiber with low lignin content. The blends of PLA reinforced with 5% organic fillers were performed on a torque rheometer at temperatures between 170 to 200℃ with the addition of glycerol as plasticizer and viscosity reducer of the system and maleic anhydride as ...

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  • Selected properties of flat-pressed wood-polymer ...

    2021-4-29 · The produced wood-polymer composites (variants A, B, and C) compared to the control particleboards (variant D) were easier to process. Both axial forces during drilling (Fig. 2) and the resultant cutting forces during milling (Fig. 3) were approximately 10 to 20% lower than the forces recorded during the processing of the control particleboards.

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  • Change of Mechanical Properties of Powder Recyclate ...

    2017-8-23 · As an example, furniture parts are produced by mixing sawdust with polymer-reinforced adhesives and pressing . In mixes, the main composite ingredients are called matrix material, while the other elements used to improve any desired property of the matrix material are called reinforcement or filler materials [5,6,7,8,9,10,11,12]. To obtain an ...

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  • Adsorption and Kinetic Study of Activated Carbon

    Post-consumer polymeric wastes in form of low-density polyethylene (LDPE) can now be considered suitable as a precursor for the synthesis of low-cost activated carbon (AC). This study produced AC from LDPE using sulphuric acid (H2SO4) and potassium hydroxide (KOH) as the activating agent. The reaction conditions for pyrolysis were varied in the range of 0.50 - 2.00 M, 400°C - 500°C, and 45 ...

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  • WO1996013368A1 - Injection molding process for the ...

    Improved injection molding apparatus for the manufacture of an article formed of a thermoplastics material having a melt index selected from the range 50 °C - 350 °C, comprising an article-shaping mold in communication with a melted feed means for intermittently feeding said thermoplastics material under pressure and at a temperature above said melt index in a first mold-filling and article ...

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  • US Patent for Oriented thermoplastic and particulate ...

    A process for the continuous production of a high modulus article comprising a composite of an oriented plastic material and an oriented particulate material, said process including the steps of:a. continuously forcing an orientable plastics material, while it is close to or at its softening temperature and in admixture with an orientable particulate material, through a converging passage of ...

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  • ADDITIVES Microspheres – a Universal, Effective Blowing

    2021-1-28 · very much indeed on the machine and process parameters such as screw dia-meter, dwell time, part dimensions etc. Nevertheless,all the results are unanimous that the expansion of thermoplastics withmicrospheres is a universal,technically simple and very efficient way to reduce the density of injection moulded parts.

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  • Bio-based composites from agricultural wastes:

    2019-8-26 · Three types of fillers were applied: sawdust, fiber from a Kraft process, and fiber with low lignin content. The blends of PLA reinforced with 5% organic fillers were performed on a torque rheometer at temperatures between 170 to 200℃ with the addition of glycerol as plasticizer and viscosity reducer of the system and maleic anhydride as ...

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  • Warpage Optimisation Using Recycled Polycar

    2021-3-15 · The recycled material was prepared using a crusher machine (XC-GB20HP, Jiangmen Xiecheng Machinery Co., Ltd., Guangdong, China) to crush the rejected parts and gating system produced by using the virgin material. A sieve with a mesh size of 6 mm was integrated into the crusher machine.

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  • A Comprehensive Review on Process and

    Recent progress relevant to wood-plastic composites has been reviewed in this article. T he process and technological aspects of WPC, such as raw materials, fabrication, mechanical, physical, thermal, and morphological properties, were outlined comprehensively. The manufacturing process of WPCs is an important aspect of WPCs production.

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  • Processes | Free Full-Text | Post-Polymerization Heat ...

    2020-12-2 · 601.2 Machine Components - 602.1 Mechanical Drives Superior Mechanical Properties of AlCoCrFeNiTixHigh-Entropy Alloys upon Dynamic Loading 20160101751362 Jiao, Z.M.(1); ...

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  • Selected properties of flat-pressed wood-polymer ...

    The book employs a practical approach to cover the key, unique capabilities that are critical for a successful structural analysis of discontinuous fiber reinforced polymer structures: -Process simulation to estimate the condition of fibers in the finished parts, i.e., fiber length, orientation, and concentration -Capability to measure micro ...

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  • Discontinuous Fiber Reinforced Composites:

    2017-6-3 · International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research ..

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  • Peer Reviewed Journal - ijera.com

    Wood materials are the best and resource-saving alternative to solid wood and are of great importance especially for furniture production and in the quality of building materials. Raw materials are thin layers of wood of different thickness, wood chips, sawdust or wood fibre from different species of wood.

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  • Method to reduce release of formaldehyde in wood

    2016-8-3 · Encyclopedic Dictionary of Polymers_哲学/历史_人文社科_专业资料 21人阅读|次下载 Encyclopedic Dictionary of Polymers_哲学/历史_人文社科 ...

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