Structural analyses of the bound rubber in silica-filled silicone rubber nanocomposites reveal mechanisms of filler-rubber interaction

Huang, Longjin; Yu, Fengmei; Liu, Yu; Lu, A.; Zhang, Song; Liu, Wei; Xiong, Y.; He, Hongjiang; Li, Shichun; Zhao, Xueyan; Cui, Sheng; Zhu, Chunhua

doi:10.1016/j.compscitech.2022.109905

Cited by 26 publications

(16 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure 4A1,A2, there were no obvious RHAS aggregates, and RHAS had a homogeneous dispersion in the rubber matrix. In Figure 4B1,B2, there were many larger particles and RHAS exhibited obvious aggregations compared with Figure 4A1,A2, indicating that the wet‐mixing method could improve RHAS dispersion in NR, 37,38 and this is consistent with the result of Payne effect as shown in Figure 3.…”

Section: Resultssupporting

confidence: 77%

“…52 With the increase of RHAS loading, the effective volume of NR was reduced, and the segmental mobility of NR was restricted, the presence of high modulus RHAS particles led to the increases of G' at low strains. 38 Especially when RHAS loading increased from 50 to 70 phr, G' 0 increased significantly.…”

Section: Payne Effectmentioning

confidence: 95%

“…The storage modulus (G') of filled rubbers decreases nonlinearly with increasing strain, and this is called Payne effect. 36 Payne effect is usually used to characterize the aggregation degree of filler, 37,38 and it could not only affect the heat-up, but also affect the fatigue resistance and the service life of vulcanizates. 39 Figure 1 shows the G'-strain curves of silica/NR compounds filled with different kinds of silica.…”

Section: Characterizationsmentioning

confidence: 99%

See 2 more Smart Citations

Preparation and properties of rice husk ash silica filled natural rubber

Zhang,

Wang,

Jiang

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

Rice husk ash silica obtained from the chemical purification of rice husk ash is a bio‐based silica. As a sustainable raw material, the bio‐based silica has attracted much attention in recent years. It can be used to replace traditional carbon black and silica in tire rubbers. Our experimental results show that the bio‐based silica can bring similar mechanical properties and higher wet grip to natural rubber in comparison with traditional silica. The wet mixing method is successfully used to disperse the bio‐based silica in natural rubber latex, obtaining a bio‐based silica/natural rubber composite with higher abrasion resistance and lower rolling resistance than the composite prepared by traditional dry mixing. The mechanical properties of bio‐based silica/natural rubber composites depend on the silica loading and mixing methods. Mixing natural rubber and bio‐based silica through wet‐mixing method is a green and sustainable approach to the tread rubbers with excellent mechanical properties, low rolling resistance, high abrasion resistance, and wet grip.

show abstract

Section: Resultssupporting

confidence: 77%

Section: Payne Effectmentioning

confidence: 95%

Section: Characterizationsmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and properties of rice husk ash silica filled natural rubber

Zhang,

Wang,

Jiang

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…It is clearly that the replacement of silica with AP in the composites generates an increased curing rate, due to the content of silica reduced, the adsorption of silica to rubber auxiliaries is weakened. The minimum torque (ML) is a measure of the stock viscosity of the uncured compounds, the maximum torque (MH) can be correlated to the stock modulus of the cured compounds and Δ M is the difference between MH and ML which is generally proportional to the crosslink density 28 . Replacing of silica with AP, the MH, ML, and Δ M of composites decrease gradually compared with Silica50.…”

Section: Resultsmentioning

confidence: 99%

“…The minimum torque (ML) is a measure of the stock viscosity of the uncured compounds, the maximum torque (MH) can be correlated to the stock modulus of the cured compounds and ΔM is the difference between MH and ML which is generally proportional to the crosslink density. 28 Replacing of silica with AP, the MH, ML, and ΔM of composites decrease gradually compared with Silica50. Due to the decrease of silica, the number of physical cross-linking sites between silica particles decreased, leading to the decrease of equivalent cross-linking density and the number of cross-linking sites provided by fiber was not enough to offset the number of cross-linking sites provided by replaced silica.…”

Section: Vulcanization Characteristics Analysismentioning

confidence: 99%

Hybrid enhancement of silica and aramid pulp on improving performance and reducing dynamic heat generation of natural rubber composites

et al. 2023

View full text Add to dashboard Cite

The composites with excellent mechanical, low rolling resistance, and low heat build‐up are the potential materials for preparing green tires. In this study, we prepared silica‐natural rubber latex (silica‐NRL) masterbatch, which improved the processing and dispersion properties of silica in the natural rubber, proved by the rheological properties of composites. Furthermore, the idea of partial replacement of silica with low content modified aramid pulp (AP) for preparing hybrid enhanced natural rubber with high mechanical properties and low heat build‐up was put forward and evaluated the feasibility of this strategy. We find that replacing 5 phr silica with 1 phr AP, the performances of the rubber composites were all superior to the composites with only filled 50 phr silica, and replacing 10 phr silica with 2 phr AP, the mechanical and fatigue property was improved remarkably and dynamic heat generation was reduced the most at same time. The strategy of preparing silica‐NRL masterbatch and partial replacement of silica with AP provides a novel reference for the preparation of low heat build‐up green tire.

show abstract

Frictional characteristics and vibration behavior of silicone rubber powders modified resin‐based friction materials

Gou,

Li,

Fei

et al. 2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

Resin‐based friction materials (RFM) are widely used in vehicle brakes. However, the thermosetting resins and rigid fillers in RFM have low toughness and produce strong vibration behavior during continuous friction processes, which adversely affects the equipment. This work proposed a method for co‐blending modification of RFM with silicone rubber powders (SRP) to mitigate friction‐induced vibrations, and the mechanism of silicone rubber modification on the vibrational behavior of RFM during friction was investigated. The results demonstrate that SRP‐modified RFM exhibit excellent damping property and frictional characteristics. SRP modification improves the stability of the coefficient of friction and reduces fatigue wear. The wear rate of RFM modified with 10 wt% SRP reduced by 29% and the average amplitude of friction‐induced vibration decreased by 35.5% compared to unmodified RFM. This work provides both theoretical and practical foundations for designing and developing RFM with high damping, low wear, and low vibration characteristic.

show abstract

Structural analyses of the bound rubber in silica-filled silicone rubber nanocomposites reveal mechanisms of filler-rubber interaction

Cited by 26 publications

References 56 publications

Preparation and properties of rice husk ash silica filled natural rubber

Preparation and properties of rice husk ash silica filled natural rubber

Hybrid enhancement of silica and aramid pulp on improving performance and reducing dynamic heat generation of natural rubber composites

Frictional characteristics and vibration behavior of silicone rubber powders modified resin‐based friction materials

Contact Info

Product

Resources

About