TECHNICAL PRODUCTS MADE OF RUBBER AND THERMOPLASTIC POLYURETHANE AND PROCESS FOR MANUFACTURING THE SAME

The invention relates to a range of technical products and to a process for manufacturing the same. According to the invention, the products consist of vulcanizable rubbers, reinforcing elements and active surfaces of thermoplastic polyurethane-type. According to the invention, the process consists...

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Hauptverfasser: DAVID VIOREL, ANGLI OIU FLORIAN, RASCOL MIRCEA, GR MAD ION, TOMESCU CONSTANTIN SORIN, GHIMISI LETI IA VIOLETA
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creator DAVID VIOREL
ANGLI OIU FLORIAN
RASCOL MIRCEA
GR MAD ION
TOMESCU CONSTANTIN SORIN
GHIMISI LETI IA VIOLETA
description The invention relates to a range of technical products and to a process for manufacturing the same. According to the invention, the products consist of vulcanizable rubbers, reinforcing elements and active surfaces of thermoplastic polyurethane-type. According to the invention, the process consists in heating a thermoplastic polyurethane sheet at a temperature of 130...150°C, thereafter the sheet is treated successively with a 15% solution of rubber in N-methylpyrrolidone, then with 5% solution of thermoplastic polyurethane in N-methylpyrrolidone and with an adherence agent, the thus treated sheet, rolled in a polyethylene foil, is subjected to a maturation process, thereafter the sheet is doubled on a calendering machine with a mixture of vulcanizable rubber and then it is used for manufacturing technical products which are vulcanized at a temperature of 145...148°C, for 20...50 min at a pressure of 80...150 at. Invenţia se referă la o gamă de articole tehnice şi la un procedeu pentru obţinerea acestora. Articolele conform invenţiei constau din cauciucuri vulcanizabile, elemente de ranforsare şi suprafaţe active de tip poliuretan termoplastic. Procedeul conform invenţiei constă din încălzirea unei folii de poliuretan termoplastic la o temperatură de 130...150°C, după care se tratatează succesiv, cu o soluţie 15% cauciuc în N-metil pirolidonă, apoi cu o soluţie 5% poliuretan termoplastic în N-metil-pirolidonă, şi cu un agent de aderenţă, folia astfel tratată se maturează rolată în folie de polietilenă, după care se dublează pe un calandru cu un amestec de cauciuc vulcanizabil, apoi se foloseşte pentru confecţionarea unor articole tehnice care se vulcanizează la o temperatură de 145...148°C, timp de 20...50 min, la o presiune de 80...150 at.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title TECHNICAL PRODUCTS MADE OF RUBBER AND THERMOPLASTIC POLYURETHANE AND PROCESS FOR MANUFACTURING THE SAME
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