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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Main Authors MATHUR, AJIT BEHARI, PATEL, NANUBHAI FULJIBHAI, GANDHAM, SATYA SRINIVASA RAO, SARMA, KRISHNA RENGANATH, SATPATHY, UMA SANKAR, MEHTA, GAURANG MANILAL, JASRA, RAKSH VIR
Format Patent
LanguageEnglish
French
Published 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.
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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– fullname: SATPATHY, UMA SANKAR
– fullname: MEHTA, GAURANG MANILAL
– fullname: JASRA, RAKSH VIR
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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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