本文選題：污水泵　切入點(diǎn)：橡膠密封圈　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】：橡膠密封圈是污水泵的重要組成零件,其性能的好壞直接影響到污水泵能否可靠地工作。生活污水泵用橡膠密封圈的工作環(huán)境復(fù)雜且苛刻,復(fù)雜的外界因素會加速橡膠密封圈的老化。而目前生活污水泵中普遍使用的密封圈耐老化性能較差且使用壽命較短,增加了污水泵維護(hù)及保養(yǎng)的工作量,因此研究開發(fā)耐老化性能和力學(xué)性能優(yōu)越的新型密封圈是非常有必要的。本論文通過試驗(yàn),研究出了在生活污水介質(zhì)中具有良好耐老化性能的橡膠密封圈,并預(yù)測了其老化壽命,為污水泵橡膠密封圈的配方設(shè)計(jì)提供了思路與方法。本論文的主要研究內(nèi)容如下：1.本論文查閱了大量文獻(xiàn)資料并結(jié)合了生活污水泵橡膠密封圈的工作環(huán)境,對外界因素促使橡膠密封圈老化的機(jī)理以及配方因素影響橡膠密封圈老化的機(jī)理進(jìn)行了研究。為污水泵橡膠密封圈的研究提供了理論基礎(chǔ)。2.本論文通過正交試驗(yàn)、耐老化性能及力學(xué)性能影響規(guī)律試驗(yàn)所得到的試驗(yàn)數(shù)據(jù),分析出了配方中硫磺、防老劑、增塑劑、促進(jìn)劑等含量的變化對橡膠耐老化性能及力學(xué)性能的影響規(guī)律與產(chǎn)生原因。3.通過極差分析,明確了配方因素對各性能指標(biāo)影響的主次順序。采用綜合平衡法確定了具有良好耐老化性能和力學(xué)性能的生活污水泵橡膠密封圈最優(yōu)配方組合：EPDM (100phr)、炭黑N115 (45phr)、ZnO (5phr)、SA (lphr)硫磺(0.5phr)、防老劑4010NA (3phr)、促進(jìn)劑TMTD (1.5phr)、促進(jìn)劑NS(1phr)、增塑劑A(2phr)。4.通過373K、363K、353K、343K四個(gè)溫度下的污水介質(zhì)中的加速老化試驗(yàn),結(jié)合動(dòng)力學(xué)曲線法,建立起了生活污水泵用最優(yōu)配方橡膠密封圈的老化壽命預(yù)測模型。預(yù)測出橡膠密封圈在平均工作溫度303K下：當(dāng)老化特性指標(biāo)臨界值P0取0.4時(shí),老化壽命為7.21年；當(dāng)老化特性指標(biāo)臨界值P0取0.5時(shí),老化壽命為4.33年。
[Abstract]:Rubber seal ring is an important part of sewage pump, and its performance directly affects whether the sewage pump can work reliably. The working environment of rubber seal ring for domestic sewage pump is complex and harsh. Complex external factors will accelerate the aging of rubber sealing ring. However, the commonly used seal ring in domestic sewage pump has poor aging resistance and short service life, which increases the workload of maintenance and maintenance of sewage pump. Therefore, it is necessary to study and develop a new type of sealing ring with excellent aging and mechanical properties. In this paper, the rubber seal ring with good aging resistance in domestic sewage media is studied through experiments. And predicted its aging life, The main research contents of this paper are as follows: 1. This paper consulted a lot of literature and combined the working environment of domestic sewage pump rubber seal ring. The aging mechanism of rubber seal ring caused by external factors and the influence of formula factors on the aging of rubber seal ring are studied in this paper, which provides a theoretical basis for the study of rubber seal ring of sewage pump. The experimental data obtained from the experiments on the effects of aging resistance and mechanical properties were analyzed and the sulfur, antioxidant and plasticizer in the formula were analyzed. The influence of accelerator content on the Aging Resistance and Mechanical Properties of Rubber. The primary and secondary order of the influence of formulation factors on the performance index was determined. The optimum formula combination of the rubber seal ring of domestic sewage pump with good aging resistance and mechanical properties was determined by using the comprehensive equilibrium method. Sulfur 0.5 phrg, antioxidant 4010 na 3phrr, accelerator TMTD 1. 5phrr, accelerator NS1 phr1, plasticizer An2phr.4.The accelerated aging test was carried out in a sewage medium at 373K ~ 363K ~ 353K ~ 3 ~ 3K. Combined with the kinetic curve method, a model for predicting the aging life of the optimum formula rubber seal ring for domestic sewage pump was established. It was predicted that when the critical value of aging characteristic index P0 was 0.4, the average working temperature of rubber seal ring was 303K. The aging life is 7.21 years, and the aging life is 4.33 years when the critical value of aging characteristic index P0 is 0.5.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X703.3

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本文編號：1581470