INSTITUTUL DE CHIMIE MACROMOLECULARĂ " PETRU PONI" IAŞI
发明人:
VLAD STELIAN,IOANID EMIL GHIOCEL,ISTRATE IOAN
申请号：
RO201900115
公开号：
RO134393A2
申请日:
2019.02.22
申请国别(地区):
RO
年份:
2020
代理人:
摘要：
The invention relates to an apparatus for spinning in electrostatic field, meant for solutions of polymers, e.g. polyurethane, polyamide, polysaccharide and the like, meant for producing nanofibre films to be used in micro electronics, in separation membranes or in biomedical applications, such as hemostatic membranes and plasters. According to the invention, the apparatus consists of a thermostated enclosure (A) having a temperature of 20...60°C, provided with a gas discharge system (19), a high voltage source (1) of 0...35 kV, an infusion pump (2) with adjustable flow rate ranging between 0.001...2 ml/min, a plastic syringe (3) having a capacity of 1...100 ml, where, in order to produce nanofibre films (8) by deposition in electrostatic field on the collectors (9 and 22) arranged vertically, horizontally or in other intermediate positions, the apparatus is provided with an adapting system (11) with bevel gears driven, by means of the insulating coupling (15), by the electric motor (16), thereby permitting the rotary motion to be transmitted in various planes, the evenness of the nanofibre film deposition being ensured by both the system (6) for translation of the capillary (7) and the value of the electrostatic potential and of the optimal distance between the capillary and the collector, as well as by the rotation speed of the collectors (9 and 22), parameters to be experimentally set depending on the nature of the polymer used, the film being removed from the collector 18...24 h after the stopping of the apparatus.Invenţia se referă la o instalaţie de filare în câmp electrostatic, pentru soluţii de polimeri ca, de exemplu, poliuretani, poliamide, polizaharide şi altele asemenea, destinată obţinerii de filme din nanofibre utilizate în microelectronică, la membrane de separare sau în aplicaţii biomedicale, cum sunt membranele hemostatice şi plasturii. Instalaţia conform invenţiei este alcătuită dintr-o incintă (A) termostatată cu temperatura cuprinsă în intervalul
