氧化四氟乙烯 的英文怎麼說
中文拼音 [yǎnghuàsìfúyǐxī]
氧化四氟乙烯
英文
fetrafluoroethylene oxide-
The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film
試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。Some additives such as graphite, ptfe and csno3 can improve obscuring effect of smoke screening in infrared waves. furthermore, some formulas entered nano ferric oxide can largely improve the effect of infrared extinction
指出金屬鎂粉優于其它金屬粉；三氧化二鐵和二氧化鈦是較好的氧化劑選擇；石墨、聚四氟乙烯和硝酸銫的添加有利於提高發煙劑紅外遮蔽能力。After that, cld of al2o3 is carried out through a system equipped with a teflon vessel immersed in a water bath. the chemicals used to make growth solution include al2 ( so4 ) 3. 18h2o, nahco3 and deionized h2o
然後，通過一套包括浸在水浴裝置中的聚四氟乙烯生長室的實驗裝置系統，我們完成了化學液相淀積氧化鋁薄膜的實驗過程。Experiments have shown that the nano silicon dioxide particles, nano teflon particles and calcium carbonate / rare earth compound particles have good performance on reducing the friction and resisting the wear
實驗表明，添加的納米二氧化硅微粒、納米聚四氟乙烯微粒和碳酸鈣、稀土復合微粒具有很好的減摩抗磨作用。分享友人