转变温度即临界温度。聚合物材料有两类转变温度,即结晶熔融温度Tm和玻璃化转变温度Tg。
转变温度(transformation temperature),相应于玻璃粘度为10 12 s Pa ⋅ 时的温度。 在该温度下,玻璃的折射率、比热、热膨胀系数发生突变。
基于584个网页-相关网页
大分子单体(M)具有可交联区域和不能交联的热塑性区域,在交联后具有转变温度(Ttrans)。聚合物(P)含有具有高于室温的第一转变温度(T1trans)的硬链段和具有低于(T1trans)的第二转变温度(Ttrans)的软链段。
基于36个网页-相关网页
目前的PTs准则(1oCFR50.61)基于参考无延性转变温度(RTNDT)的限值建立了筛选判 据(Screening Criteria):RTNDT是反应堆压力容器材料延性损失或脆化程度的量度。
基于22个网页-相关网页
玻璃化转变温度 [物化] glass transition temperature ; glass transition point ; TG ; GTT
脆性转变温度 FATT ; fracture appearance transition temperature ; brittle transition temperature ; fragile transition temperature
韧脆转变温度 DBTT ; FATT ; toughness-brittleness transformation temperature
无塑性转变温度 NDTT ; RTNDT
无延性转变温度 nil-ductility transition temperature ; TNDT ; NDT ; TNOT
延脆转变温度 brittle-ductile transition temperature ; brittle-ductile transition
相转变温度 PIT ; phase inversion temperature ; liquid crystalline transition temperature
体积相转变温度 VPTT ; TVPT ; volume phase transition temperature
超导转变温度 superconducting transition temperature
The critical temperature of the Be-C co-doped system is higher than that of C doped system,and lower than that of Be doped system.
Be、C共掺MgB2系统的超导转变温度比C掺杂系统的高比Be掺杂系统的低。
参考来源 - MgB·2,447,543篇论文数据,部分数据来源于NoteExpress
从这个可以得到什么?,转变温度是多少?
And what we are supposed to get out of this is, what's the phase transition temperature?
这就是转变温度了。
若所有材料以玻璃转变温度进行加热,那就再不能进行折叠了。
If all of the material is heated to the glass transition temperature, no folding will occur.
OK, for most gases, T inversion is much 300K greater than 300 degrees Kelvin. Much greater than room temperature.
好,对大多数气体,转变温度都高于,比室温高很多。
If T is less than T inversion, you have the opposite case, and dT/dp is greater than zero.
如果T比转变温度低,情况就相反,偏T偏p大于零。
But now, so this is where the refrigeration comes in. So if you take a gas, and you're below the inversion temperature and you make it go through this irreversible process, the gas comes out colder from that side than that side.
这就是冰箱的原理,如果在低于转变温度,的情况下我们将气体经过,这个不可逆过程,气体出来的温度将比这边低。
应用推荐