本文關(guān)鍵詞： UFPR 抗滑性能 損耗因子 表面性能　出處：《青島科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：本文分別應(yīng)用超細(xì)全硫化粉末羧基丁腈橡膠(UFPCNBR)、超細(xì)全硫化粉末丁苯橡膠(DB-50,DB-70)、超細(xì)全硫化粉末丁腈橡膠(UFPNBR)四種粒子制備了UFPR/天然橡膠(NR)/丁苯橡膠(SBR)胎面膠復(fù)合材料,在研究UFPR粒子胎面膠復(fù)合材料硫化性能和物理機(jī)械性能的基礎(chǔ)上,重點(diǎn)研究了UFPR粒子對(duì)胎面膠復(fù)合材料的動(dòng)態(tài)力學(xué)性能和表面性能的影響,進(jìn)而優(yōu)化選擇UFPR粒子,制備具有高抗滑、低滾阻的胎面膠復(fù)合材料,完善抗滑性能作用機(jī)制,并提出了抗滑性能的基本經(jīng)驗(yàn)理論模型,為高溫高速下安全行駛輪胎胎面膠的制備提供了新的研究思路。機(jī)械力學(xué)性能研究表明,非極性DB-50、DB-70粒子改性胎面膠復(fù)合材料的斷裂伸長(zhǎng)率明顯提高,二者的拉伸程度和撕裂強(qiáng)度均可達(dá)到20MPa和50N/mm,能夠滿足胎面膠力學(xué)性能的要求。極性UFPCNBR和UFPNBR改性胎面膠的斷裂伸長(zhǎng)率也明顯提高,但拉伸、撕裂強(qiáng)度有一定程度的降低。動(dòng)態(tài)力學(xué)性能(DMA)實(shí)驗(yàn)結(jié)果表明,UFPNBR、DB-50、DB-70粒子能夠明顯提高胎面膠復(fù)合材料在-10～10℃溫度范圍內(nèi)的損耗因子(tan8),提高了胎面膠的抗?jié)窕阅?抗?jié)窕阅芸煞謩e提高31.71%、56.64%、21.43%；UFPCNBR粒子不能夠提高胎面膠復(fù)合材料的抗?jié)窕阅�。在上述研究的基礎(chǔ)上,本文重點(diǎn)研究了4種UFPR粒子胎面膠復(fù)合材料的表面性能,發(fā)現(xiàn)UFPR粒子能夠改善胎面膠的表面性能。其中,DB-50粒子能夠明顯降低DB-50/NR/SBR復(fù)合材料表面的水接觸角,且摩擦后胎面膠表面形貌更為粗糙；此外,DB-50粒子還能夠提高胎面膠的模量(宏觀、微觀)。胎面膠的微觀粗糙度、潤(rùn)濕能力、宏觀模量和微觀模量的提高能夠降低水膜厚度、破壞水膜,從而提高胎面膠的抗?jié)窕阅堋Ｔ谇叭丝節(jié)窕阅艿睦碚撗芯炕A(chǔ)上,本文充分考慮影響水膜厚度的各種因素,對(duì)現(xiàn)有采用損耗因子作為評(píng)價(jià)抗?jié)窕阅艿膯我环绞竭M(jìn)行補(bǔ)充,提出了抗?jié)窕阅艿暮?jiǎn)化經(jīng)驗(yàn)函數(shù)表達(dá)式：橡膠加工分析儀(RRA)實(shí)驗(yàn)結(jié)果表明,10%應(yīng)變條件下,25份UFPCNBR粒子改性胎面膠的tanδ(30℃)增大了13.98%,雖然提高了抗干滑性能,但同時(shí)提高了胎面膠的滾動(dòng)阻力；25份DB-50粒子改性胎面膠的tanδ(30℃)增大了4.66%,而60℃下的tanδ降低了16.18%,既提高了抗干滑性能,又降低了滾動(dòng)阻力；UFPNBR和DB-70粒子改性胎面膠對(duì)抗干滑性和滾動(dòng)阻力的改善效果不明顯。胎面膠復(fù)合材料的表面能研究發(fā)現(xiàn),UFPR粒子能夠提高胎面膠復(fù)合材料的表面能。其中,DB-50粒子改性橡膠的表面能是基體橡膠的6倍左右,增強(qiáng)了橡膠與路面之間的粘附能力,從而可進(jìn)一步提高胎面膠的抗干滑性能。在前人研究胎面膠的抗滑性能和摩擦理論的基礎(chǔ)上,本文指出采用損耗因子和表面性能來(lái)評(píng)價(jià)胎面膠的抗干滑性能的合理性,并結(jié)合實(shí)驗(yàn)結(jié)果和橡膠的摩擦系數(shù)公式,提出了抗干滑性能的簡(jiǎn)化經(jīng)驗(yàn)函數(shù)表達(dá)式：
[Abstract]:In this paper, ultrafine fully-vulcanized powder carboxylic acrylonitrile butadiene rubber (UFPCNBRN) and ultrafine fully vulcanized powder butadiene rubber (DB-50 / DB-70) were used respectively. UFPNBR4 particles of ultrafine fully vulcanized powder nitrile butadiene rubber (UFPNBR) were used to prepare UFPR / NRN / SBR tread composites. Based on the study of the vulcanization and physical mechanical properties of UFPR particle tread composites, the effect of UFPR particles on the dynamic mechanical properties and surface properties of tread composites was studied. Then the UFPR particles were optimized to prepare the tread rubber composites with high sliding resistance and low roll resistance. The mechanism of the anti-slide properties was improved and the basic empirical theoretical model of the skid resistance was put forward. It provides a new research idea for the preparation of tread rubber for safe driving tire at high temperature and high speed. The study of mechanical properties shows that non-polar DB-50. The elongation at break of DB-70 particle modified tread composite was improved obviously. The tensile degree and tear strength of the two composites could reach 20MPa and 50Nm / mm. It can meet the requirements of mechanical properties of tread rubber. The elongation at break of the tread modified by polar UFPCNBR and UFPNBR is also obviously increased, but the tensile properties are also improved. The tear strength is reduced to some extent. The dynamic mechanical properties of DMA show that UFPNBR-DB-50. DB-70 particles can obviously improve the loss factor of tread rubber composites in the temperature range of -10 鈩，

本文編號(hào)：1476115