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Wear particulate matters and physical properties of silica filled ENR/BR tread compounds according to the BR contents / Gyeongchan Ryu ; Donghyuk Kim ; Sanghoon Song ; Hyun Hee Lee ; Jin Uk Ha ; Wonho Kim 1

Abstract 1

Introduction 1

Materials and Experimental Methods 2

1. Materials 2

2. Measurements 2

3. Preparation of compounds 3

Results and Discussion 4

1. Cure Characteristics and Mooney Viscosity 4

2. Mechanical Properties, Crosslink Density and DIN Abrasion Loss 4

3. Dynamic Viscoelastic Properties 5

Conclusions 6

References 6

초록보기

The demand for truck bus radial (TBR) tires with enhanced fuel efficiency and wear resistance have grown in recent years. In addition, as the issue of particulate matter and air pollution increases, efforts are being made to reduce the generation of particulate matter. In this study, we investigated the effect of varying the content of butadiene rubber (BR) on the properties of the rubber compounds and the amount of particulate matter in the TBR tire tread compound. Furthermore, we utilized carbon black in the NR/BR blend compounds owing to its excellent compatibility, and we used silica in the ENR-25/BR blend compounds because it can interact chemically with epoxide groups. The NR/BR blend compounds and the ENR-25/BR blend compounds were evaluated by varying their BR content between 20 phr and 30 phr. The results showed that the ENR-25/BR blend compounds had superior wear resistance than the NR/BR blend compounds. This was caused by the interaction between silica and ENR. In addition, it was confirmed that the increased wear resistance as the BR content increased. Furthermore, compared to the NR/BR blend compounds, ENR-25/BR blend compounds exhibited a lower tan δ value at 60°C because silica was used as filler. This indicates a higher fuel efficiency. The measurement results for wear particulate matter showed that as increasing the BR content resulted in generation of less wear particulate matter.

This was caused by the increased wear resistance. Moreover, the ENR-25/BR blend compounds with excellent filler-rubber interaction exhibited lower quantities of generated wear particulate matters as compared to the NR/BR blend compounds.

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