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Showing 1 to 12 of 12 for “"plasticize"”.
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The Bending of Wood With Steam
… woods not easily bent; the time required to plasticize stock; and the time required to set curves. Also noted are some of the physical limitations involved in bending stock with steam in the craftsman's studio. Thirdly, steam bent wood is related to furniture design in terms of the …
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Rate-dependent deformation behavior of poss-filled and plasticized poly(vinyl chloride)
… with PVC up to 15 wt% added. Both mPOSS and DOP plasticize PVC and reduce the [alpha]-transition temperature. While mPOSS also reduces the secondary ([beta]) transition temperatures in PVC, DOP was found to restrict the p-relaxation motions.
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Characterizing Mechanical and Gas Transport Properties of Nitrile Norbornene (NN) ROMP in Preparation for Analysis of OMe-NN-ROMP Block Copolymers
… in permeation. The nitrile norbornene film did plasticize in intervals and the specific plasticization pressure is higher than 5 bar which is the CO₂-induced plasticization pressure point for the OMe-nitrile norbornene ROMP one-pot copolymers. Forming a block copolymer using nitrile norbornene …
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The effects of space radiation on a chemically modified graphite- epoxy composite material
… produced low molecular weight products which plasticize the material at elevated temperatures and cause apparent material stiffening at low stresses at room temperature.
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Room Temperature Ionic Liquid (Rtil) Membranes For Bio-Methane Dehumidification
… plasticization by H2O [6]. Water vapor does not plasticize room temperature ionic liquid membranes (RTIL-membranes) according to literature data, and RTIL-membranes have water/CH4 selectivities > 6000. In this paper we will build on the initial literature RTIL-dehumidification data by looking at …
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The attempted plasticization of cellulose from cellulose xanthate
… which is encountered in the attempt to plasticize a cellulose xanthate and the removing of the salts formed in the xanthate formation. The removal of the salts in the water treatment (B) required large amounts of water which also seemed to remove the plasticizer. Some of the plasticizers …
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Advancing additive friction stir deposition as a repair technology through smooth particle hydrodynamic simulations.
… frictional and plastic heat generation to plasticize material inside of a hollow, rotating tool. In addition to the manufacture of near net shape components similar to other AM methods, AFSD has also been proposed as a repair technology capable of depositing material identical to that of …
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Melt Processing Thermally Unstable and High Molecular Weight Polymers with Supercritical Carbon Dioxide
… what conditions it is possible to use CO₂ to plasticize and, thereby, reduce the viscosity of an acrylonitrile (AN) copolymer in an extrusion process and render it melt processable. In order to assess whether it was possible to absorb adequate amounts of CO₂ in short residence times by …
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The Effects of Structure, Humidity and Aging on the Mechanical Properties of Polymeric Ionomers for Fuel Cell Applications
… polymeric chains. Water was found to effectively plasticize the membranes, especially in the case of Dais® materials, by reducing the storage modulus and decreasing the structural integrity of the ionomers. The effect of pre-treatment of Nafion® was investigated and the glass transition …
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Benign Processing of High Performance Polymeric Foams of Poly(arylene ether sulfone)
… batch foaming process. Both water and scCO2 plasticize the PAES, allowing for precise control on both the foam morphology and the foam density. To optimize the foaming conditions, both thermogravimetric analysis and differential scanning calorimetery (DSC) were used to determine the …
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Melt Processing of Metastable Acrylic Copolymer Carbon Precursors
… was evaluated using carbon dioxide (CO₂) to plasticize AN copolymers to an extent that facilitates processing at reduced temperatures, below where thermal degradation is significant. A batch saturation method to absorb CO₂ in AN copolymers was developed. Differential scanning calorimetry and …
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Crystallization behavior and structure property behavior of selected thermoplastic polymers
… desorption behavior. Absorbed C0₂ was shown to plasticize polycarbonate. Polymeric liquid crystalline foams were produced from star-branched polyoxybenzoate-po1yoxyphenoxybenzoate copolymers (POB-co-POPB) via gas supersaturation followed by thermal blowing. Solid state C0₂ gas absorption well as …