High-speed tribological properties of Eucommia ulmoides gum/natural rubber blends: Experimental and molecular dynamics simulation study

Teng, Fei; Wu, Jian; Su, Benlong; Wang, Youshan

doi:10.1016/j.triboint.2022.107542

Cited by 12 publications

(4 citation statements)

References 41 publications

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“…The tribological behavior of rubber materials is a focus of attention [ 29 , 30 ], and the tribological performance after aging is crucial for rubber sealing materials. Dong et al [ 31 ] investigated the dry sliding friction of NBR after aging.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrothermal Aging on the Tribological Performance of Nitrile Butadiene Rubber Seals

Huang,

Chen,

et al. 2023

Polymers

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High temperature and humidity affect the tribological performance of nitrile butadiene rubber (NBR) seals, which affects the precise positioning of cylinder systems. Therefore, it is crucial to study the effect of hydrothermal aging on the tribological performance of the NBR seals. In this study, the changes in the tribological performance of the NBR seals under hydrothermal aging conditions were investigated. The results show that the volatilization of additives and the increase in crosslink density of the NBR seals occurs in the hydrothermal aging environment, leading to the deterioration of their surface quality, elastic deformability, and tribological performance. The formation of surface micropores due to additive volatilization is the main factor in the degradation of tribological performance.

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Section: Introductionmentioning

confidence: 99%

Effect of Hydrothermal Aging on the Tribological Performance of Nitrile Butadiene Rubber Seals

Huang,

Chen,

et al. 2023

Polymers

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“…EUO rubber is also known as one of the natural sources of rubber, which is highly valuable for sustainable development and applications. EUO rubber has a very wide scope of development mainly in the fields of industrial raw materials, medical devices and construction materials [14][15][16]. At present, studies of EUO mainly focus on the bark, leaves, male flowers and stems [17].…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Study of Key Components of the Samara-Hulling Machine for Eucommia ulmoides Oliver

Lan,

Bi,

Feng

et al. 2023

Processes

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In this article, a hammer-blade hulling machine for Eucommia ulmoides Oliver that solves the current industry problem of low hulling efficiency and high manual input in EUO samaras is described. Its main working components are a hulling device and a screening device. Discrete element simulation was used to simulate the hulling process of a EUO samara hulling machine, and a EUO samara bond model was used to simulate the crushing process. The optimal parameters of the huller were determined as follows: the spindle speed was 2800 r/min, the hammer length was 70 mm and the other mechanism parameters were determined according to the working processes of components. Before the prototype test, EUO samaras were pretreated via soaking and insolation. The soaking and insolation times were used as the influence factors when carrying out the test. Their effect on hulling efficiency was evaluated by calculating the yield rates of the kernels and shell and the loss rate. The results show that under the optimal pretreatment conditions, the parameters of the huller meet the requirements, and the yield rate of kernels is more than 28%, the yield rate of shells is more than 38%, and the loss rate is less than 7%. The test indexes meet the use requirements and improve the efficiency of the hulling of the EUO samara, which has the advantages of high efficiency and high hulling rates.

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“…Eucommia ulmoides Oliver (EUO) is a traditional medicinal resource in China; it is widely grown in many provinces in China, including Shaanxi, Sichuan, Yunnan, Guangxi, Zhejiang, and Guizhou [1]. As a part of EUO, the EUO samara shell is rich in EUO rubber, and its kernel is rich in EUO seed oil, which is widely used in the fields of national health, industrial raw materials, and medical devices and materials, and it has a high development value [2][3][4]. At present, the demand for EUO samara is urgent, but its industrialization is low.…”

Section: Introductionmentioning

confidence: 99%

Calibration and Experiments on the Parameters of the Bonding Particle Model of Eucommia ulmoides Oliver Samara Based on the Discrete Element Method

Lan,

Xu,

Zhu

et al. 2023

Processes

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The calibration of the discrete element model of EUO samara was conducted in response to the lack of discrete element simulation models and parameters in the development of mechanical hulling technology and equipment of EUO samara. The EUO samara was modeled based on the Hertz–Mindlin with bonding model, and its relevant parameters were measured by physical experiments. Among them, maximum shear force was used as the evaluation index, virtual calibration experiments were conducted for the bonding parameters by the single-factor experiments, and the two-level factorial experiment, the steepest climb experiment, and the Box–Behnken response surface experiment were also used. The results showed that the relative error between the simulated and measured maximum shear force is 0.93%; the model and parameter calibration results established by this research can be used for discrete element simulation research, which is of guiding significance for the research and development of hulling equipment of EUO samara.

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High-speed tribological properties of Eucommia ulmoides gum/natural rubber blends: Experimental and molecular dynamics simulation study

Cited by 12 publications

References 41 publications

Effect of Hydrothermal Aging on the Tribological Performance of Nitrile Butadiene Rubber Seals

Effect of Hydrothermal Aging on the Tribological Performance of Nitrile Butadiene Rubber Seals

Design and Experimental Study of Key Components of the Samara-Hulling Machine for Eucommia ulmoides Oliver

Calibration and Experiments on the Parameters of the Bonding Particle Model of Eucommia ulmoides Oliver Samara Based on the Discrete Element Method

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