發(fā)布時(shí)間：2018-02-11 13:57

  本文關(guān)鍵詞： 氟塑料包覆硅橡膠 O型密封圈 數(shù)值模擬　出處：《華東理工大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：O型密封圈是制藥機(jī)械中最常用的密封墊片,密封圈的性能直接影響機(jī)械設(shè)備的正常運(yùn)轉(zhuǎn)及使用。新型的氟塑料包覆硅橡膠O型密封圈結(jié)合了氟塑料與硅橡膠各自材料特性的優(yōu)點(diǎn),近年來(lái)在密封領(lǐng)域得到了一定的應(yīng)用和推廣。但是目前對(duì)該種結(jié)構(gòu)型式的密封圈的系統(tǒng)研究還比較少,因此對(duì)氟塑料包覆硅橡膠O型密封圈的性能表征及適用性進(jìn)行全面系統(tǒng)地深入研究有著重要的意義。論文首先介紹了 O型密封圈的發(fā)展、應(yīng)用及研究現(xiàn)狀,同時(shí)對(duì)O型圈密封原理以及氟塑料包覆硅橡膠O型密封圈等方面的基本知識(shí)進(jìn)行了概述。闡述了密封對(duì)材料的一些基本要求,并比較了不同橡膠材料以及氟塑料材料性能的差異,總結(jié)了氟塑料包覆硅橡膠O型圈的不同結(jié)構(gòu)形式及相應(yīng)的制備方法。其次,選用硅橡膠和FEP氟塑料為主要原料,采用熔體焊接法制備了全包覆的復(fù)合O型密封圈。通過(guò)試驗(yàn)研究了氟塑料包覆硅橡膠O型密封圈所選用的兩種材料的應(yīng)力、應(yīng)變關(guān)系,獲得了它們的應(yīng)力-應(yīng)變曲線,并進(jìn)一步計(jì)算得到硅橡膠和FEP氟塑料的彈性模量應(yīng)用于之后的模擬分析。最后,根據(jù)橡膠材料的Mooney-Rivlin本構(gòu)模型,應(yīng)用有限元模擬分析軟件ANSYS對(duì)氟塑料包覆硅橡膠O型圈及普通硅橡膠O型圈進(jìn)行了數(shù)值模擬,在相同的模擬環(huán)境下比較兩者應(yīng)力和接觸壓力的分布情況,并詳細(xì)分析了介質(zhì)壓力、壓縮率及摩擦系數(shù)對(duì)應(yīng)力的影響。結(jié)果表明:在包覆O型圈密封中,氟塑料包覆層對(duì)硅橡膠芯起到了很好的保護(hù)作用,并且提供了均勻穩(wěn)定的應(yīng)力分布以保證密封的穩(wěn)定性。再加上氟塑料優(yōu)異的物理特性,氟塑料包覆硅橡膠0型密封圈在密封領(lǐng)域有著很好的應(yīng)用前景。
[Abstract]:O type seal gasket is the most commonly used pharmaceutical machinery, sealing performance directly affects the normal operation and the use of mechanical equipment. New type of fluorine plastic coated silicon rubber O ring combines the advantages of fluorine plastic and silicone rubber in their material properties, in recent years in the field of seal has been applied and promoted the but the current system of the sealing ring. The structure is still relatively small, so the properties and applicability of fluorine plastic coated silicon rubber O ring systematically in-depth study has important significance. This paper firstly introduces the development of O type sealing ring, application and research status, basic at the same time of knowledge O ring sealing principle and fluorine plastic coated silicon rubber O ring and other aspects were summarized. Describes some of the basic requirements for materials, sealing, and compared the different rubber materials and fluorine The difference of plastic material properties, summarizes the different structure form and the corresponding preparation method of fluorine plastic coated silicon rubber O ring. Secondly, using silicone rubber and FEP fluorine plastic as the main raw material, the welding method of O type full melt composite coated by the sealing ring. The stress strain relationship of two kinds of materials by experimental study on the selection of fluorine plastic coated silicone rubber O type sealing ring, the stress-strain curve was obtained, and further calculate the simulation analysis in the elastic modulus after application of silicone rubber and FEP fluorine plastics. Finally, according to the rubber material constitutive model of Mooney-Rivlin, the application of finite element simulation analysis software ANSYS of fluorine plastic coated silicon rubber O ring and ordinary silicon rubber O ring was simulated in the simulation environment between the distribution of stress and contact pressure, and a detailed analysis of the medium pressure, pressure Influence of shrinkage stress and friction coefficient. The results showed that: in the O type sealing ring coating, fluorine plastic coating on silicon rubber core plays a very good protective effect, and provides the stable and uniform stress distribution in order to ensure the stability of the seal. Coupled with excellent physical properties of fluoroplastics, fluorine plastic coated silicon rubber sealing ring type 0 has a good application prospect in the field of sealing.

【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TQ460.5;TQ336.42

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本文編號(hào)：1503219