shearing rate 中文意思是什麼
-
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 。 -
Rubber, unvulcanized - determinations using a shearing - disc viscometer - determination of the mooney stress - relaxation rate
未硫化橡膠.用剪切圓盤型粘度計測定門尼應力鬆弛率 -
Sbs elastomers do not depend on a high shearing rate to achieve the injection viscosity, but sebs elastomers are vice - versa
Sbs彈體無需依賴高剪切率來達至塑性流動力， sebs彈體卻需依賴高剪切率來達至塑性流動力 -
At the same of solid rate and shearing rate, apparent viscosity in steady rheological state is lower than that in transient rheological state
相同固相率和剪切速率情況下，穩態流變的表觀粘度較瞬態流變的表觀粘度要低。 -
The general manufacturing temperature is between 200 and 230c and can be manufactured in high shearing rate
一般加工溫度在200230c間，可用高剪切率加工 -
If the materials are degraded in the event of high temperature and high shearing rate, the melt viscosity will decrease due to the breaking up of the molecular bonds
如果材料因高溫或高剪切率加工而降解，熔膠粘度會因分子鏈斷裂而降低 -
The molecules of soft sections of sbs elastomers are not satuated and is easily to be oxidized. it is highly possible to create degradation by manufacturing in high temperature and high shearing rate
Sbs軟質段分子段有不飽和鍵，容易被氧化，高溫或高剪切率加工產生材料降解degradation可能性高 -
The structure shearing force takes a one - way increasing trend with the decrease of ratio of beam bending rigidity and pier lateral displacement rigidity and the increasing rate is bigger. when the consolidation at the bottom of pier is elastic consolidation and the structure force is bigger the extreme value mentioned at the above, the structure force will take a increase with the decrease of ratio ; and when the structure force is smaller the extreme value, the improvement of the inner force at the bottom of pier is distinct adopting elastic consolidation and bending of at the top of pier and beam will has a great increase
對于墩底採用彈性固接時，結構內力在梁、墩剛度比不低於前述固接墩出現極值點時剛度比的情況下，將出現內力值隨剛度比的增加而減小；而在梁、墩剛度比小於極值點剛度比時採用彈性固接對墩底彎矩改善較大較為明顯，對墩頂及主梁的彎矩將會有較大幅度的增加。
分享友人