Elastic modulus of thermoplastic elastomers investigated with the instantaneous volumetric strain method

Cheng, Shuai; Qian, Shanhua; Huang, Chuanhui; Zhang, Ni; Liu, Liguo

doi:10.1002/app.47181

Cited by 2 publications

(2 citation statements)

References 30 publications

(33 reference statements)

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“…The flat‐ended indenter (

{\emptyset }

30 mm) and spherical indenter (

{\emptyset }

12.5 mm) were selected to carry out monotonic static loading on the samples. The uniaxial indentation tests were carried out and the loads were 1 N, 2 N and 3 N with the loading rate of 1 N min −1 [28, 45]. Three tests were carried out under the same experimental parameters.…”

Section: Methodsmentioning

confidence: 99%

“…The characterization methods affect the accuracy of the test results of materials' deformation properties. At present, tensile test, hardness test and indentation test are usually applied to characterizing the soft materials' deformation properties [20][21][22][23][24][25][26][27][28]. For instance, the mechanical property of a new vulcanized silicone rubber was characterized by the tensile test [29].…”

Section: Introductionmentioning

confidence: 99%

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Study on characterization methods of the deformation properties of soft material polydimethylsiloxane using the indentation test

Tang

Qian

Zhou

et al. 2022

Materialwissenschaft Werkst

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Soft materials are widely used in biomedical and flexible electronics fields, while their deformation properties are affected by many factors. It is difficult to obtain accurate characteristic parameters using common test methods. In this work, polydimethylsiloxane is used as the tested object, and the samples with different mass ratios of curing agent/base and thicknesses are prepared. The deformation properties of polydimethylsiloxane under the conditions of different loads and two indenters are investigated using the experiment and finite element analysis, and the factors affecting its deformation properties are discussed. The results demonstrate that the elastic modulus of polydimethylsiloxane is positively correlated with the content of curing agent, and the load has no significant role in its deformation properties. The correlation coefficients between the indentation tests and finite element results are in excess of 0.92. The difference between the modulus of the spherical indentation mode and the elastic modulus of the standard tensile test is lower than 3 %, while the flat‐ended indentation mode is more applicable to characterizing deformation properties of soft materials with variable thickness. These results will provide a new insight into the deformation characterization of soft materials.

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“…The flat‐ended indenter (

{\emptyset }

30 mm) and spherical indenter (

{\emptyset }

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on characterization methods of the deformation properties of soft material polydimethylsiloxane using the indentation test

Tang

Qian

Zhou

et al. 2022

Materialwissenschaft Werkst

View full text Add to dashboard Cite

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Influence of silane‐modified coconut shell powder on thermal and mechanical properties of thermoplastic elastomers

Qian

Cheng

Zhang

et al. 2020

Polymer International

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A silane coupling agent (glycidyloxypropyltrimethoxysilane, GPTMS) was used to modify coconut shell powder (CSP), and the influence of the modified coconut shell powder (G‐CSP) on the thermal and mechanical properties of thermoplastic elastomers (TPEs) was investigated. The thermal stabilities of the G‐CSP‐TPEs were studied using TGA; Young's modulus of the G‐CSP‐TPEs was studied by means of the spherical indentation test and the tensile test, and the tensile test was also used to characterize the tensile strength of the G‐CSP‐TPEs. The results revealed that the specific functional groups of GPTMS were efficiently grafted onto the CSP and that G‐CSP enhanced the thermal stability of the TPEs. Under 8% strain, Young's moduli of 0–7.5 wt% G‐CSP‐TPEs obtained by the spherical indentation test and tensile test were almost equal, while the modulus of 10–15 wt% G‐CSP‐TPEs measured by the latter test was greater than that of the former test. The tensile strength of G‐CSP‐TPEs increased up to a threshold limit (10 wt% G‐CSP), followed by a significant decrease. Micro‐images of the fractured surfaces obtained by SEM indicated that the addition of G‐CSP gradually filled the microvoids in the matrix and enhanced the tensile strength of the composite. As the G‐CSP mass percentage exceeded a threshold limit (>10 wt%), the particles started to agglomerate, resulting in weak interfacial adhesion and inferior mechanical properties. Hence, an optimal amount of reinforcing agent G‐CSP should be added to attain desirable thermal and mechanical properties. © 2020 Society of Chemical Industry

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Elastic modulus of thermoplastic elastomers investigated with the instantaneous volumetric strain method

Cited by 2 publications

References 30 publications

Study on characterization methods of the deformation properties of soft material polydimethylsiloxane using the indentation test

Study on characterization methods of the deformation properties of soft material polydimethylsiloxane using the indentation test

Influence of silane‐modified coconut shell powder on thermal and mechanical properties of thermoplastic elastomers

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