JACOBUS JOHANNES MENCKE,JOSEPH ARNOLD PAUL MARIA SIMMELINK,MARTINUS JOHANNES NICOLAAS JACOBS,ROELOF MARISSEN
申请号：
BRPI0418300
公开号：
BRPI0418300B1
申请日:
2004.12.23
申请国别(地区):
BR
年份:
2016
代理人:
摘要：
A process for the manufacture of high performance polyethylene multifilament yarn The invention relates to a process for the manufacture of high performance polyethylene multifilament yarn comprising the steps of a) manufacturing of ultra high molar mass polyethylene in a solvent ； b) rotating the solution through a spin plate containing at least 5 spin holes in an air space to form fluid filaments, while applying a fluid flow draw ratio； c) cooling the fluid filaments to form solvent-containing gel filaments； d) at least partially removing solvent from the filaments； ee) stretching the filaments at least one step before, during and / or after said solvent removal, while applying a dr solid draw ratio of at least 4, characterized in that, in the step (b) each turning hole has a downstream zone of diameter d ~ n ~ with l ~ n ~ / d ~ n ~ from 0 to a maximum of 25, to result in a dr ~ fluid draw ratio ~ = dr ~ sp dr * ag ~ is at least 150, where dr ~ sp ~ is the stretch ratio in the spinning holes and dr ~ ag ~ is the stretch ratio in the airspace, with dr ~ sp ~ being greater than 1 and at least 1. The invention further relates to a high performance polyethylene multifilament yarn and semi-finished or end-use products containing said yarn, especially for ballistic resistant ropes and composites.processo para fabricação de fio de multifilamentos de polietileno de alto desempenho a invenção se refere a um processo para a fabricação de fio de multifilamentos de polietileno de alto desempenho, compreendendo as etapas de a) fabricação de polietileno de massa molar ultra-elevada em um solvente； b) giro da solução através de uma placa de giro contendo pelo menos 5 furos de giro em um espaço de ar para formar filamentos de fluido, ao mesmo tempo em que se aplica uma proporção de estiramento de fluido dr~ fluido~； c) resfriamento dos filamentos de fluido para formar filamentos de gel contendo solvente； d) remoção, pelo menos parcialmente, do solvente dos filamentos； e e) estir
