Mechanical Properties of Nitrocellulose Composite Materials

Malchevsky, V. A.

doi:10.1007/978-1-4615-0687-4_24

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Polyurethane is one of the most common material used for a wide range of vehicle interior components. Among the most important properties of polyurethane are flexibility, abrasion resistance, high adhesive ability, fast curing rate, and possibility to use unique manufacturing processes [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Heat Treatment on the Quality of Vehicle Component Parts Made of Rigid Polyurethane Foam

Shakirova

Романова

Shafigullin

2020

MSF

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The paper provides the results of the investigation in the influence of heat treatment on the quality of vehicle component parts made of rigid polyurethane integral foam. The temperature of heat treatment was based on the exo-peak of the first heat cycle in DSC curve, and was equal to 135 °С. At that temperature, the samples were treated for 2-8 hours, and, as a result, they experienced an abnormal exo-effect in the glass transition region, which was indicative of thermal relaxation. The paper shows that the additional heat treatment stage for parts made of rigid polyurethane integral foam results in an increase in molecular mass of polymer, due to a smaller quantity of end groups, and, thus, in an increase in glass transition temperature from 169 °С to 176 °С. An increase in heat treatment time to 6 hours at 135 °С leads to a higher ultimate bending strength, which reaches its maximum, while further heat treatment (up to 8 hours) lowers this value. Therefore, with a higher degree of cross-linking the fracture toughness increases and passes its maximum, after that it starts to decrease, and the material becomes brittle.

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Section: Introductionmentioning

confidence: 99%

The Influence of Heat Treatment on the Quality of Vehicle Component Parts Made of Rigid Polyurethane Foam

Shakirova

Романова

Shafigullin

2020

MSF

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show abstract

“…The degradation of polymers during processing results in lower durability of products under the operating conditions. That's why it is important to know which effect the temperature has on the product performance [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Failure Analysis of the Propylene Parts Used in Trucks

Shakirova

Романова

Shafigullin

2020

MSF

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The paper provides the results of failure analysis of the air intake pipe in the truck compressor. The thermal studies were carried out to identify a material, and to analyze the thermal oxidative degradation caused by excessively high operating temperatures. The study of the vehicle component part showed that it was made from polypropylene block copolymer. Analysis of the thermo-physical properties of the warranty polypropylene part showed that the thermal degradation led to a higher polymer crystallization and, as a result, a lower molecular mass due to high temperatures. The results of the thermal studies showed that the polypropylene part was subjected to excessively high operating temperatures which caused the thermal degradation and, as a result, catastrophic failure of the material.

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Mechanical Properties of Nitrocellulose Composite Materials

Cited by 2 publications

References 2 publications

The Influence of Heat Treatment on the Quality of Vehicle Component Parts Made of Rigid Polyurethane Foam

The Influence of Heat Treatment on the Quality of Vehicle Component Parts Made of Rigid Polyurethane Foam

Failure Analysis of the Propylene Parts Used in Trucks

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