Thermally resistant polymer composites reinforced with fibreglass

Abstract

THERMALLY RESISTANT POLYMER COMPOSITES REINFORCED WITH FIBREGLASSABSTRACT. The aim of this paper was to obtain and characterize polymeric composites based on polyamide (PA) and polycarbonate (PC), reinforced with chemically ac# vated surface fi breglass (FG), with advanced proper# es and temperature resistance. Polyamide was employed as the polymeric matrix, and the polycarbonate as disperse phase. As PA and PC are immiscible due to the polarity diff erences, a polyoxazoline compa# biliser was used. A* erwards, fi breglass was introduced in this composite. However, in order to obtain these proper# es, many varia# ons of recipes had to be tested, with diff erent concentra# ons of the components. The star# ng point was a mixture of 70% PA and 30% PC. The amount of compa# biliser varied up to 5%, and the FG amount, up to 30%. The characteris# cs of these polymeric composites with compa# biliser and simple and treated fi breglass were studied. KEY WORDS: polymeric composites, polyamide, polyethylene, fi breglass COMPOZITE POLIMERICE TERMOREZISTENTE RANFORSATE CU FIBRĂ DE STICLĂREZUMAT. Scopul acestui ar# col a fost realizarea şi caracterizarea compozitelor polimerice pe bază de poliamidă (PA) şi policarbonat (PC), armate cu fi bre de s# clă cu suprafeţe ac# vate chimic (FG), cu caracteris# ci performante şi rezistente la temperatură. A fost u# lizată ca matrice polimerică poliamida, iar faza dispersă a fost policarbonatul. PA şi PC fi ind nemiscibile datorită diferenţelor de polaritate, a fost u# lizat un compa# bilizator pe bază de polioxazolină. În acest compozit s-au introdus, apoi, fibre de sticlă. Totuşi, în vederea obţinerii acestor proprietăţi au trebuit testate mai multe variante de reţete cu diferite concentraţii ale componenţilor. Astfel s-a pornit de la un amestec de 70% PA şi 30% PC. Cantitatea de compatibilizator a variat până la 5%, iar cea de FG până la 30%. Au fost studiate caracteristicile acestor compozite polimerice cu compatibilizator precum şi cu fibre de sticlă funcţionalizate şi nefuncţionalizate. CUVINTE CHEIE: compozite polimerice, poliamidă, polie# lenă, fi bră de s# clă COMPOSITES POLYMÈRES THERMOSTABLES RENFORCÉS AUX FIBRES DE VERRERÉSUMÉ. Le but de cet ar# cle était de concevoir et de caractériser des composites polymères à base de polyamide (PA) et polycarbonate (PC), renforcés aux fi bres de verre ac# vées chimiquement (FG) avec des caractéris# ques de haute performance et de résistance à la température. La polyamide a été u# lisée comme matrice polymère et la phase dispersée était le polycarbonate. PA et PC étant non miscibles en raison des diff érences de polarité, un agent de compa# bilité à base de polyoxazoline a été u# lisé. La fi bre de verre a ensuite été introduite dans ce composite. Cependant, afi n d'obtenir ces propriétés, plusieurs variantes de rece$ es avec diff érentes concentra# ons des composants ont dû être testées. On a par# d'un mélange de 70% PA et 30% PC. La quan# té d'agent de compa# bilité a varié jusqu'à 5% et la quan# té de fi bres de verre jusqu'à 30%. Les ca...

Achieving high quality surface of laminated glass-reinforced plastics during milling

“…The research is executed at milling of STEF-1 composite glass-fiber plastic as it possesses high-strength properties and is of fine grain structure, which allows using this composite as a construction material in the manufacture of machine parts for various purposes [1,3,4].…”