A PROCESS FOR PREPARING A DISENTANGLED UHMWPE PRODUCT
A process for preparing a disentangled ultra-high molecular weight polyethylene product having a density not less than 1 g/cc is provided. The polyethylene product is prepared in the form of a sheet or a block by solid state compaction by a low flow process such as compression molding exhibiting a d...
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Format | Patent |
Language | English French |
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24.09.2015
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Abstract | A process for preparing a disentangled ultra-high molecular weight polyethylene product having a density not less than 1 g/cc is provided. The polyethylene product is prepared in the form of a sheet or a block by solid state compaction by a low flow process such as compression molding exhibiting a density not less than 1 g/cc. The product formed can further be hot stretched below the melting range of the polymeric material, to form films, tapes or fibers. The stretched films, tapes and fibers obtained have a high crystallization temperature and superior thermal properties with high strength and modulus, suitable for ballistic applications.
La présente invention concerne un procédé de préparation d'un produit de polyéthylène démêlé de poids moléculaire ultra-élevé ayant une densité non inférieure à 1 g/cc. Le produit de polyéthylène est préparé sous la forme d'une feuille ou d'un bloc par compactage à l'état solide par l'intermédiaire d'un procédé à faible débit tel que le moulage par compression présentant une densité qui n'est pas inférieure à 1 g/cc. Le produit formé peut en outre être étiré à chaud au-dessous de la plage de fusion du matériau polymère, pour former des films, des rubans ou des fibres. Les films, rubans, et fibres étirés obtenus ont une température de cristallisation élevée et des propriétés thermiques supérieures avec une résistance et un module d'élasticité supérieurs, convenant aux applications balistiques. |
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AbstractList | A process for preparing a disentangled ultra-high molecular weight polyethylene product having a density not less than 1 g/cc is provided. The polyethylene product is prepared in the form of a sheet or a block by solid state compaction by a low flow process such as compression molding exhibiting a density not less than 1 g/cc. The product formed can further be hot stretched below the melting range of the polymeric material, to form films, tapes or fibers. The stretched films, tapes and fibers obtained have a high crystallization temperature and superior thermal properties with high strength and modulus, suitable for ballistic applications.
La présente invention concerne un procédé de préparation d'un produit de polyéthylène démêlé de poids moléculaire ultra-élevé ayant une densité non inférieure à 1 g/cc. Le produit de polyéthylène est préparé sous la forme d'une feuille ou d'un bloc par compactage à l'état solide par l'intermédiaire d'un procédé à faible débit tel que le moulage par compression présentant une densité qui n'est pas inférieure à 1 g/cc. Le produit formé peut en outre être étiré à chaud au-dessous de la plage de fusion du matériau polymère, pour former des films, des rubans ou des fibres. Les films, rubans, et fibres étirés obtenus ont une température de cristallisation élevée et des propriétés thermiques supérieures avec une résistance et un module d'élasticité supérieurs, convenant aux applications balistiques. |
Author | GANDHAM, SATYA SRINIVASA RAO MATHUR, AJIT BEHARI PATEL, NANUBHAI FULJIBHAI SARMA, KRISHNA RENGANATH JASRA, RAKSH VIR SATPATHY, UMA SANKAR MEHTA, GAURANG MANILAL |
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DocumentTitleAlternate | PROCÉDÉ DE PRÉPARATION D'UN PRODUIT UHMWPE DÉMÊLÉ |
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Snippet | A process for preparing a disentangled ultra-high molecular weight polyethylene product having a density not less than 1 g/cc is provided. The polyethylene... |
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SubjectTerms | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
Title | A PROCESS FOR PREPARING A DISENTANGLED UHMWPE PRODUCT |
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