轴承
軸承
축승
Bearing
2015年
11期
39-41,63
,共4页
滚动轴承%航天轴承%润滑油%黏温特性%流变特性%低剪切速率
滾動軸承%航天軸承%潤滑油%黏溫特性%流變特性%低剪切速率
곤동축승%항천축승%윤활유%점온특성%류변특성%저전절속솔
rolling bearing%space bearing%lubricating oil%viscosity -temperature characteristic%rheological behav-ior%low shear rate
采用 MCR302旋转流变仪测量了航天润滑油4116，4129的动力黏度和流变参数，绘制出黏温曲线图并确定其 Vogel 黏温模型，同时探讨了润滑油的剪应力和黏度随剪切速率的变化关系以及复数黏度和损耗模量随扫描频率的变化特性。结果表明：4116的黏温性能优于4129，在低剪切速率时，润滑油的剪应力随剪切速率呈线性增加，而黏度随剪切速率的增加却保持不变；随着扫描频率的增加，损耗模量逐渐增大，复数黏度出现小幅度缓慢降低。
採用 MCR302鏇轉流變儀測量瞭航天潤滑油4116，4129的動力黏度和流變參數，繪製齣黏溫麯線圖併確定其 Vogel 黏溫模型，同時探討瞭潤滑油的剪應力和黏度隨剪切速率的變化關繫以及複數黏度和損耗模量隨掃描頻率的變化特性。結果錶明：4116的黏溫性能優于4129，在低剪切速率時，潤滑油的剪應力隨剪切速率呈線性增加，而黏度隨剪切速率的增加卻保持不變；隨著掃描頻率的增加，損耗模量逐漸增大，複數黏度齣現小幅度緩慢降低。
채용 MCR302선전류변의측량료항천윤활유4116，4129적동력점도화류변삼수，회제출점온곡선도병학정기 Vogel 점온모형，동시탐토료윤활유적전응력화점도수전절속솔적변화관계이급복수점도화손모모량수소묘빈솔적변화특성。결과표명：4116적점온성능우우4129，재저전절속솔시，윤활유적전응력수전절속솔정선성증가，이점도수전절속솔적증가각보지불변；수착소묘빈솔적증가，손모모량축점증대，복수점도출현소폭도완만강저。
The dynamic viscosities and rheological parameters of space lubricating oils 4116 and 4129 are tested by u-sing rotary rheometer MCR302.The viscosity -temperature curves are plotted,and their Vogel viscosity -temperature models are obtained.The variable relationships of shear stress and viscosity of lubricating oil with shear rate is ana-lyzed,as well as the variable characteristics of complex viscosity and loss modulus with scanning frequency are dis-cussed.The results show that the viscosity -temperature characteristic of 4116 is better than that of 4129.With the shear rate increases,the shear stresses of lubricating oils increase linearly and the viscosities keep a constant value at low shear rates.The loss modulus gradually increases with the increase of scanning frequency,while the complex vis-cosity slowly decreases.
