Damage content of reinforced plastics at high temperature

1984 ◽  
Vol 16 (7) ◽  
pp. 964-968
Author(s):  
V. S. Dzyuba
Keyword(s):  
High Temperature ◽  
Reinforced Plastics ◽  
Damage Content

High-temperature carbon plastics based on thermoreactive polyimide binder

2020 ◽  
pp. 89-102
Author(s):  
M. I. Valueva ◽  
I. V. Zelenina ◽  
M. A. Zharinov ◽  
M. A. Khaskov
Keyword(s):  
Glass Transition ◽  
High Temperature ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Strength Properties ◽  
High Glass Transition Temperature ◽  
Reinforced Plastics ◽  
Carbon Plastics ◽  
Fundamental Possibility ◽  
Fiber Reinforced Plastics

The article presents results of studies of experimental carbon plastics based on thermosetting PMRpolyimide binder. Сarbon fiber reinforced plastics (CFRPs) are made from prepregs prepared by melt and mortar technologies, so the rheological properties of the polyimide binder were investigated. The heat resistance of carbon plastics was researched and its elastic-strength characteristics were determined at temperatures up to 320°С. The fundamental possibility of manufacturing carbon fiber from prepregs based on polyimide binder, obtained both by melt and mortar technologies, is shown. CFRPs made from two types of prepregs have a high glass transition temperature: 364°C (melt) and 367°C (solution), with this temperature remaining at the 97% level after boiling, and also at approximately the same (86–97%) level of conservation of elastic strength properties at temperature 300°С.

HIGH MODULUS, HIGH TEMPERATURE GLASS FIBERS FOR REINFORCED PLASTICS

1960 ◽  
Author(s):  
G. R. Machlan ◽  
C. J. Stalego ◽  
R. L. Tiede ◽  
A. B. Isham ◽  
D. E. Caramante
Keyword(s):  
High Temperature ◽  
Glass Fibers ◽  
High Modulus ◽  
Reinforced Plastics

An Experimental Study of Acid Exposed Fibre Reinforced Plastic Gratings

2011 ◽  
Author(s):  
Firoz Alam ◽  
Reza N. Jazar
Keyword(s):  
Experimental Study ◽  
High Temperature ◽  
Service Life ◽  
Industrial Plants ◽  
Reinforced Plastics ◽  
Industrial Manufacturing ◽  
Reinforced Plastic ◽  
Fluosilicic Acid ◽  
Long Time ◽  
Adverse Environmental Conditions

Fibre Reinforced Plastics (FRPs) generally have greater advantages over conventional materials for their structural properties. However, the service life can significantly be shortened if the fibre reinforced plastics are exposed to adverse environmental conditions especially acid vapour, humidity and high temperature. In many chemical industrial plants in Australia and elsewhere fibre reinforced plastic gratings are used as structural components of stairs and passages where they are subjected to varying degrees of fluosilicic acid, a byproduct of the industrial manufacturing process. As currently no experimental data on the effects of fluosilicic acid on FRPs is available in the public domain, it is difficult to predict the service life of FRPs with some certainty. In order to understand the structural strength of fluosilicic acid exposed FRPs, an experimental study was undertaken. A series of specimens from various locations of a chemical plan in Australia were acquired and studied. Some new specimens (not exposed to acid, humidity and high temperature) were also studied to provide a benchmark for the comparison. The results indicated that the long time exposure to harsh environment and acid vapour can significantly deteriorate the flexural strength and service life of FRPs.

Phthalonitrile-carbon fiber composites produced by vacuum infusion process

2017 ◽  
Vol 51 (30) ◽  
pp. 4157-4164 ◽  
Author(s):  
BA Bulgakov ◽  
AV Sulimov ◽  
AV Babkin ◽  
IA Timoshkin ◽  
AV Solopchenko ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Carbon Fiber ◽  
Carbon Fiber Composites ◽  
Vacuum Infusion ◽  
Reinforced Plastics ◽  
Composite Tooling ◽  
High Level ◽  
First Time ◽  
Vacuum Infusion Process

High-temperature carbon fiber-reinforced plastics based on phthalonitrile resins are obtained for the first time by vacuum infusion process. For this purpose, formulations based on low-melting bis(3-(3,4-dicyanophenoxy)phenyl) phenyl phosphate monomer in combination with 1,3-bis(3,4-dicyanophenoxy)benzene and 4-[3-(prop-2-yn-1-yloxy)phenoxy]benzene-1,2-dicarbonitrile were developed. Resin viscosities η ≤ 600 mPa·s were suitable for VIP and at the same time the thermal and mechanical properties of the cured matrices were in high level featured to phthalonitriles (HDT ≥ 420℃, E ≥ 5.1 GPa). CFRP samples were manufactured by vacuum infusion process with carbon fabric and demonstrated thermal stability over 400℃ and a change of mechanical properties by less than 10% at 300℃. Present results sufficiently extend the application field of phthalonitriles as matrices for complex-shape high temperature composite parts in aerospace or high-temperature composite tooling for PEEK-like thermoplastics processing.

INFLUENCE OF CLIMATIC AGEING ON THE PROPERTIES OF HIGH-TEMPERATURE CARBON FIBER REINFORCED PLASTICS

2021 ◽  
pp. 39-51
Author(s):  
I.N. Gulyev ◽  
◽  
I.V. Zelenina ◽  
E.O. Valevin ◽  
M.A. Khaskov ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Fiber ◽  
Cold Climate ◽  
Temperate Climate ◽  
Fiber Reinforced ◽  
Humid Climate ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

Presents the results of of research of the properties of a series of high-temperature carbon plastics based on phthalonitrile resin after long-term exposure in various climatic zones: temperate climate, moderately warm climate with mild winters, warm humid climate, very cold climate are presented. The state of the surface of carbon fiber reinforced plastics has been investigated, their thermal stability and water absorption have been determined. After exposure, CFRPs showed high retention of properties from the level of the initial values: 80–90% at room temperature of tests and 60–75% at a temperature of 300 °С.

Preparation of Carbon Nanotubes Doped TiO2/Glass Fiber Reinforced Plastics Hybrid Materials

2013 ◽  
Vol 785-786 ◽  
pp. 220-223
Author(s):  
Ling Yun Bai ◽  
Long Fa Jiang ◽  
Yao Chen
Keyword(s):  
Carbon Nanotubes ◽  
High Temperature ◽  
Glass Fiber ◽  
Hybrid Materials ◽  
Tetrabutyl Titanate ◽  
Fiber Reinforced ◽  
High Temperature Stability ◽  
Reinforced Plastics ◽  
Glass Fiber Reinforced ◽  
Fiber Reinforced Plastics

Carbon nanotubes (CNTs) doped TiO2/glass fiber reinforced plastics (GRP) hybrid materials were prepared by first step sol-gel and then hand lay-up method, using modified CNTs doped tetrabutyl titanate as precursor. The results showed that TiO2 component as the inorganic material, could improve the high temperature stability of the GRP, and the latticework structure of the hybrid material could disperse the CNTs well and prevented them from gathering at high temperature.

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