本文選題：抗燃性　切入點(diǎn)：極壓抗磨　出處：《天津科技大學(xué)》2017年碩士論文

【摘要】：水-乙二醇難燃液壓液是目前使用最為廣泛的難燃液壓液之一,其對(duì)環(huán)境友好、成本較低、系統(tǒng)無(wú)需修改即可使用以及其使用壽命較長(zhǎng)。但是由于它屬于水基類(lèi)型難燃液壓液,所以耐燃性很好。但是防銹能力和承壓抗磨能力有待改善。因此,研究并制備潤(rùn)滑性?xún)?yōu)異的水-乙二醇難燃液壓液具有重要的意義。本文采用四球試驗(yàn)機(jī)對(duì)不同物質(zhì)的摩擦學(xué)性能進(jìn)行了研究。測(cè)試了添加量不同時(shí),油酸三乙醇胺、二聚酸鉀以及混合物在基礎(chǔ)液(水、乙二醇及增稠劑)中的摩擦學(xué)性能。包括摩擦系數(shù)(f)、最大無(wú)卡咬負(fù)荷(PB)以及磨斑直徑(WSD)。測(cè)試結(jié)果表明,這三種物質(zhì)均有較好的潤(rùn)滑性。當(dāng)油酸三乙醇胺質(zhì)量分?jǐn)?shù)為7%時(shí),其PB是基礎(chǔ)液的3.7倍,WSD與f分別減小了 15%和39%;當(dāng)二聚酸鉀質(zhì)量分?jǐn)?shù)為3%時(shí),其PB是基礎(chǔ)液的3.2倍,WSD與f分別減小了30%和30%;二聚酸鉀以及油酸三乙醇胺以質(zhì)量比3:7,配合成混合物。其質(zhì)量分?jǐn)?shù)為5%時(shí),其PB是基礎(chǔ)液的5.8倍,WSD與f分別減小了37% 和 40%。以二聚酸鉀與油酸三乙醇胺的質(zhì)量比3:7,配合成混合物。并以其質(zhì)量分?jǐn)?shù)為5%作為極壓抗磨劑制備難燃液壓液,對(duì)自制難燃液壓液進(jìn)行以上摩擦學(xué)測(cè)試,以及傾點(diǎn)、銅片腐蝕、pH值、泡沫特性等性能測(cè)試,并與市售樣品A和B進(jìn)行性能對(duì)比。自制難燃液壓液PB為1166N,WSD為0.40mm,摩擦系數(shù)為0.054。傾點(diǎn)小于-42℃,pH值為9.4,銅片腐蝕級(jí)別為1a級(jí),泡沫特性滿(mǎn)足國(guó)標(biāo);市售樣品A的PB為1000N,磨斑直徑為0.59mm,摩擦系數(shù)為0.078;市售樣品B的PB為902N,磨斑直徑為0.55mm,摩擦系數(shù)為 0.088。對(duì)自制水-乙二醇難燃液壓液四球機(jī)測(cè)試后的鋼球表面磨斑的形貌以及元素通過(guò)掃描電子顯微鏡和EDS進(jìn)行分析。基礎(chǔ)液潤(rùn)滑條件下的磨損最是嚴(yán)重,其磨痕深而密同時(shí)還有鋼球表皮剝落和明顯的犁溝。市售樣品A和B中,鋼球表面也有較深劃痕及表皮的輕微脫落。自制難燃液壓液潤(rùn)滑條件下,鋼球摩擦表面的磨痕較淺,沒(méi)有明顯的溝痕。相比于基礎(chǔ)液和市售樣品,磨斑更為平整。EDS圖中存在元素C、O和N的峰,是油酸三元乙醇胺和二聚酸鉀牢牢的吸附在金屬元件的表面并且發(fā)生化學(xué)反應(yīng),從而形成堅(jiān)固的有機(jī)化學(xué)反應(yīng)膜及物理吸附膜。
[Abstract]:Water-glycol refractory hydraulic fluid is one of the most widely used refractory hydraulic fluids at present. It is environmentally friendly, low-cost, the system can be used without modification and its service life is long. So the flammability is very good. But the anti-rust ability and the pressure anti-wear ability need to be improved. It is of great significance to study and prepare water-glycol refractory hydraulic fluid with excellent lubricity. The tribological properties of different substances have been studied by a four-ball tester. Tribological properties of potassium dimer and its mixtures in the base solution (water, ethylene glycol and thickener). These include friction coefficient FG, maximum free bite load PBB, and abrasive spot diameter WSDN. When the mass fraction of triethanolamine oleate is 7, the PB is 3.7 times of the base solution and the WSD and f of the base solution are decreased by 15% and 39%, respectively, and when the mass fraction of potassium dimer is 3, the content of PB decreases by 15% and 39%, respectively, when the mass fraction of potassium dimer is 3, PB was 3.2 times as much as the base solution and WSD and f were reduced by 30% and 30%, respectively. Potassium dimer and triethanolamine oleate were mixed into a mixture with a mass ratio of 3: 7. The PB is 5.8 times as much as the base solution and WSD and f are reduced by 37% and 40% respectively. The mixture is prepared by using the mass ratio of potassium dimer and triethanolamine oleate as 3: 7, and its mass fraction is 5% as extreme pressure antiwear agent to prepare refractory hydraulic fluid. The above tribological tests were carried out on the self-made refractory hydraulic fluid, as well as the performance tests such as pour point, corrosion pH value of copper sheet, foam characteristics, etc. Compared with the commercial samples A and B, the self-made refractory hydraulic fluid PB = 1166NU WSD is 0.40mm, the friction coefficient is 0.054, the pour point is less than -42 鈩，

本文編號(hào)：1666537