Rolivsans ? New binders for heat-resistant and strong reinforced plastics

Zaitsev, B. А.; Khramova, G. I.; Tsygankova, T. S.; Kiseleva, R. F.; Laius, L. A.; Besonov, M. I.; Lebedeva, M. F.; Zakharov, S.K.

doi:10.1007/bf00604106

Cited by 7 publications

(17 citation statements)

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“…Rolivsans demonstrate good adhesion to fiberglass surface, and rolivsan-based fiberglass cloth laminates possess rather high mechanical strength and high chemical resistance [16,29,30]. Figure 9 shows temperature dependences of flexural strength σ F (determined using the three-point bending test) of fiberglass cloth laminate samples obtained from prepregs impregnated with ROL-I and one of its components with the lowest molecular weight (the M1 monomer).…”

Section: Fiberglass Cloth Laminates Based On the Common Rolivsan Matrmentioning

confidence: 99%

“…It has been found that thermal cure of ROLs leads to the formation of heat resistant network copolymers capable of changing their chemical structure [16][17][18][19], microstructure [20], network density and, accordingly, their thermal and mechanical properties. In the present work, the first detailed studies of the influence of structure and composition as well as cure and post-cure schedules of ROLs on thermal and mechanical properties of the resulting network copolymers and compositions were carried out.…”

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

“…4) and fiberglass cloth laminates (Table 5) allowed us to determine service temperatures for rolivsan thermosetting resins; these materials can be used as chemically resistant, electrically insulating potting, casting and encapsulating compounds as well as binders for composites [16,29,30,32]. The combined analysis of the data on isothermal aging of cured unreinforced ROLs (Fig.…”

Section: Estimation Of Rolivsan Service Temperaturesmentioning

confidence: 99%

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High-temperature properties of rolivsan thermosetting resins (network copolymers of (di)vinylaromatic ethers and cyclized (di)methacrylates)

Zaitsev

Shvabskaya

2015

J Polym Res

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Rigid chemical structure provides for excellent thermal and thermo-mechanical properties of heat resistant organic polymers, but affects their fabricability. For the first time a new original chemical approach to the problem of combining high-temperature stability, durability of thermosetting polymers with environmental safety and easy processability has been developed and demonstrated in detail. The key methodological concept was introducing a new structure-forming tool (α-hydroxyethyl)phenylene functional groups) into the chemistry of thermally stable organic polymers. The main goal of this work was to reveal structure-property correlations for rolivsans and products of their cure; using the obtained data would allow to combine resin processability with high thermo-oxidative stability, good heat deformation characteristics and mechanical strength of the prepared polymeric materials. The properties of network copolymers of ( d i ) v i n y l a r o m a t i c e t h e r s w i t h t h e r m o s e n s i t i v e (di)methacrylates and copolymer-based composites were studied. These copolymers were capable of changing their (micro)structure, crosslink density and mechanical properties in the process of thermal treatment. Rolivsan resin compositions with equimolar concentrations of styrene-like and methacrylate end groups have shown optimal combination of fabricability, mechanical strength and heat deflection temperature (HDT). It was found that HDT of rolivsan castings/glassreinforced plastics was 250°C/275°С. Rolivsan copolymers/composites could withstand short-duration temperature spikes (up to 350°C).

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Section: Fiberglass Cloth Laminates Based On the Common Rolivsan Matrmentioning

confidence: 99%

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

Section: Estimation Of Rolivsan Service Temperaturesmentioning

confidence: 99%

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High-temperature properties of rolivsan thermosetting resins (network copolymers of (di)vinylaromatic ethers and cyclized (di)methacrylates)

Zaitsev

Shvabskaya

2015

J Polym Res

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“…In addition to prior work that focused on details of the polyester resin synthesis and cure kinetics, the thermal and physical properties of the cured resins have been reported. Several types of composites (using glass,11 carbon,12 polyimide,13 or Kevlar13 fibers) were prepared, tested, and compared to samples constructed with an epoxy matrix. In general, the performance of the polyester‐based composites was shown to be superior to the epoxy‐based composites at high temperatures (>350°C) on the basis of measurements of Young's modulus ( E ′), tensile strength, and rupture strain.…”

Section: Introductionmentioning

confidence: 99%

Properties and toughening of heat‐resistant thermosets based on unsaturated ester resins

Canelas

Abbey

Fentress

2002

J of Applied Polymer Sci

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ABSTRACT:We describe our investigations of the curing chemistry and properties of heat-resistant thermosets comprised of unsaturated ester resins. We suggest a mechanism for the rearrangement of the cured matrix and volatile evolution during the curing process. We employed dielectric spectroscopy (DES) as a tool for monitoring the extent of cure, determining glass-transition temperatures, and evaluating electrical properties of the resins. We compare and contrast results obtained by DES to results obtained by dynamic mechanical analysis (DMA). Fracture testing showed that improvements were made in the toughness of these materials by blending the uncured resin with impact modifiers such as hydrocarbon or silicone reactive rubber adducts or poly(arylene ether sulfone)-based thermoplastic oligomers. We determined the effects of the thermoplastic toughening additive's molecular weight, concentration, and endgroup functionality on the phase separation, thermal stability, and fracture toughness of the blend.

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“…We included these syntheses in a system of polyreactions for the preparation of a specific type of unsaturated polyester resins which were later called Rolivsans and were applied in various field of technology as high-temperature polymer materials (dielectrical polymer compounds, nonporous matrix resins, highly corrosion resistant protective coatings, etc.). [12][13][14][15][16] The method of obtaining linear aromatic polyethers with styrene-like end groups, which has been developed by the authors, may be referred to stepgrowth polymerization or, as Higashimura" has called it, proton-transfer polyaddition. It is based on cationic polymerization of styrene-like p-(m-)divinyl aromatics, which is carried out under specific conditions.…”

Section: Introductionmentioning

confidence: 99%

Proton-transfer polyaddition reactions in syntheses of linear, branched, and functionalized poly(p-divinyl aromatics). I. Synthesis, kinetics, and mechanism of formation of linear unsaturated poly[bis(p-vinylphenyl) ether]

Zaitsev

Kiseleva

Gusarova

1996

J. Polym. Sci. A Polym. Chem.

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Rolivsans ? New binders for heat-resistant and strong reinforced plastics

Cited by 7 publications

References 0 publications

High-temperature properties of rolivsan thermosetting resins (network copolymers of (di)vinylaromatic ethers and cyclized (di)methacrylates)

High-temperature properties of rolivsan thermosetting resins (network copolymers of (di)vinylaromatic ethers and cyclized (di)methacrylates)

Properties and toughening of heat‐resistant thermosets based on unsaturated ester resins

Proton-transfer polyaddition reactions in syntheses of linear, branched, and functionalized poly(p-divinyl aromatics). I. Synthesis, kinetics, and mechanism of formation of linear unsaturated poly[bis(p-vinylphenyl) ether]

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