Dynamics of destruction epoxy composites with different contents nanoparticles ultra-dispersed diamond is investigated. Epoxy diane oligomer ED-20 was employed as the basic bonding agent in composite formation. It characterized by its ability providing high adhesion and cohesive strengths, easy processibility, well low coating shrinkage on deposition onto long-length surfaces complex profile parts. Polyethylene polyamine (PEPA) used for cross-linking composites, which made it possible to...

The effect of nano-fillers (carbon carbon nanotubes) on thermophysical properties epoxy composites is investigated. curve showing the dependence between heat resistance composite and content nanoparticles demonstrates optimal nanotubes, indicating improved performance characteristics material with above nanotubes. To analyze processes structure formation behavior under influence a thermal field, coefficient linear expansion materials It established that increases an increase in temperature...

Coatings based on epoxy diane oligomer ED-20 are being developed as environmentally benign, foulingresistant marine coatings. Silver oxide and carbonate (mixture) was used filler, the dispersion of which is 0.5 µm. It proved that for formation composites with improved physical mechanical properties it necessary to add Mechanical Mixture Carbonate Oxide (MMSCO) in amount q = 0.050…0.250 pts. wt. into (100 wt.). The obtained values impact toughness during introduction MMSCO binder increased by...

Abstract The article presents the results of a study on effect dispersed filler, produced by thermal synthesis from mixture titanium hydride, ferrosilicomanganese, and boron carbide powders tribological characteristics polymer composite based ED-20 epoxy diane oligomer. filler was incorporated into resin at concentration ranging 5 to 40 parts powder per 100 (by weight) At sliding speed 0.5 m/s, highest friction coefficient (µ) in range 0.55–0.6 noted for without while an increase led...

Thanks to advanced logistics, water transport transports an unlimited amount of various cargoes. Therefore, is one the world's largest carriers. First, this due extensive network ports and sea routes, which allows transporting goods over long distances, including intercontinental ones. ensuring global connectivity critical delivering on time. The work presents technological aspects improving thermophysical characteristics epoxy composite protective coatings protect navigational means that...

Вступ. Забезпечення глобального зв’язку має вирішальне значення для постачання вантажів водним транспортом у чітко встановлені терміни. Таким чином, вагомим є надійність суднових радіолокаційних систем. При цьому надійної експлуатації систем необхідно контролювати стан їх зовнішніх поверхонь, зокрема лакофарбових покриттів. Отже, метою роботи розроблення математичних моделей прогнозування характеристик полімерних покриттів призначених захисту поверхонь засобів навігації. Результати. Для...

The tribological properties of complex polymeric materials, which include epoxy and polyester resins, two hardeners microdispersed fillers: mica-muscovite, copper (II) oxide, were investigated in the work. results testing specimens at dry friction lubricant analyzed. It is proved, that antifriction composite depend on its composition, formation technology conditions. has been experimentally determined, material was tested lubricating environment – Im = 0.25–0.30 mg/km, f 0.03–0.04, differs...

The corrosion resistance and hydroabrasive of the developed epoxy composite coatings are investigated in this paper. analysis penetration index change after τ = 50–150 days immersion a water medium 10% sulfuric acid solution is carried out. optimal ratio modifier nanodispersed (Si 3 N 4 , Al 2 O AlN, TiN) fibrous (viscose, polyamide, matka silk, rong, cashmere) fillers binder determined. It was allowed to slow down process electrochemical reaction on metal surface. aggressive media such...

The physical and mechanical properties of matrix based on epoxy resin ED-20 were investigated by adding unsaturated polyester ENYDYNE H 68372 TAE at different concentrations. contents in the one changing its concentration range q = 10–120 mas.fr. analysed. It was experimentally determined that is characterised with maximal rates 10 per 100 ED-20. received material marked following indexes properties: fracture stresses during flexion – σfl 56.2 MPa, modulus elasticity –E 4.2 GPa, impact...

The dynamics of fracture epoxy composites on various loadings fullerene C60 particles was investigated. Epoxy diane oligomer ED-20 employed as the basic bonding agent in composite formation. It is characterized by its ability providing high adhesion and cohesive strengths, easy processibility, well low coating shrinkage deposition onto long-length surfaces complex profile parts. Polyethylene polyamine (PEPA) used for cross-linking composites, which made it possible to carry out curing...

A new adhesive material and a restoration technology for marine equipment units are proposed. The optimal content of hardeners different nature is found, the effect temperature conditions used crosslinking epoxy resin DER-331, on properties polymeric determined. polymerization oligomer DER-331 polyethylene polyamine (PEPA) hardener at T = 413 ± 2 K found to enhance by 3.2–3.6 times, as compared polymer GEN-150. In addition, separation pattern metal surfaces was analyzed, which allowed an...

Abstract The tribological properties of composite materials with microdispersed proportions, based on the epoxy-polyether matrix, were investigated. specimens tested during dry friction and in conditions a corrosive environment. It was determined that at friction, coefficient is f = 0.33–0.35, contact temperature experimental specimen area mechanical interaction surfaces T 366–369 К. proved composites, which environment, differ improved antifriction increased durability. In this case,...

The influence of fire-resistant coarse-grained fillers different physical nature on the thermophysical properties epoxy composites in range temperatures ΔT = 303–873 K was determined. Martens temperature, thermal linear expansion coefficient, glass-transition shrinkage, and stability developed were investigated. Based researches carried out, it has been established that filled with calcium aluminate particles to a content q 80 pts.wt. are characterized by improved properties. quality...

The methods for ensuring long-term and safe operation of marine equipment due to comprehensive repair technologies that use epoxy oligomers new compositions based on them are developed. influence temperature UltraSonic Treatment (UST) the rheological properties pure matrix it is explored. have different content nanodispersed soot carbon black brand PowCarbon 2419G (particle size 24 ± 2 nm). It established when nanoparticle (q = 0.10…15.00 pts wt) introduced into composition treated with...

Corrosive destruction and hydroabrasive wear is a serious problem in the operation of machine parts water transport mechanisms. It promising to develop new composite materials with improved properties increase reliability vehicles. In this regard, use polymer-based materials, which are characterized by anticorrosion resistance, promising. work, therefore, for formation multifunctional protective coatings, epoxy dian oligomer brand ED-20, polyethylene polyamine (PEPA) hardener, mixture...

The impact of fillers in the epoxy oligomer on test culture marine ecosystem was investigated. content additive—biocides—was selected based complex research using STAT-GRAPHICS® Centurion XVI. ecotoxicity composite surfaces determined model systems methods which are standard eco-microbiology. microorganism identified by studying morphological, cultural, biochemical, and antigenic properties. Studies structure microrelief materials were conducted scanning electron microscopy (SEM) X-ray...

У роботі представлено аналіз та системний підхід до визначення сутності понять «інтермодальні» «мультимодальні» перевезення, ймовірність виникнення тяжкості непередбачуваних чи передбачуваних наслідків із погляду IMO стандарту ISO8402:1995/BS 4778. теоретичних дослідженнях використано аналітичні методи системного підходу, теорії ймовірності, математичної статистики експертних оцінок. Визначено проблеми розвитку екологоорієнтованих комбінованих перевезень з урахуванням надійності роботи...