不同防护体系对NR/SBR并用胶耐臭氧老化性能的影响

近几年由于轮胎胎面表面臭氧浓度提高,加速了轮胎胎面的老化裂口,导致了轮胎使用寿命下降,尤其是工程轮胎胎侧胶比较薄,在轮胎侧部最外边,且运动过程中持续不断的受到屈挠作用,所以胎侧胶近几年受到臭氧老化影响较严重,本文以工程轮胎胎侧胶为例进行基本性能、疲劳性能、力学性能、老化性能等几个方面进行实验,研究了不同防护体系对工程轮胎胎侧胶耐臭氧老化性能的影响,通过6组不同防老剂品种、不同比例的实验,寻求出了最有效的防护体系,提高了工程轮胎胎侧胶耐臭氧老化性能。

Different Protection System for the Effect of NR/SBR Resistance to Ozone Ading Performance

In recent years, due to the increase of ozone concentration of tire surface, the aging cracks of tire tread accelerated and the service life-time of engineering tire declined, we mainly studied the ozone resistance properties of tire sidewall rubber compound. Since the tire sidewall rubber is thin, constantly flexure and located outermost of the tire, the tire sidewall rubber is affected more seriously by ozone aging in recent years. In the present paper, we took the sidewall rubber compound of engineering tire as an example to study its basic properties, fatigue properties, mechanical properties and aging properties. By using 6 different series antioxidants and different proportions, we found out the most efficient anti-degradation system and the ozone resistance properties were significantly increased.