玻璃化

Effects of physical ageing on glass transition of phenolphthalein polyaryletherketone, phenolphthalein polyarylethersulfone and their blends and composites have been studied by differential scanning calorimetry.

本文用DSC技术研究了物理老化对PEK-C、PES-C及其共混物和复合材料玻璃化转变的影响。

The results of GPC show that there are two different reaction mechanisms,linear condensation and cyclic reaction in the synthesis process,and the molecular weightreaches 1.17×105 and P d is 1.33.The DSC curves show that supercritical carbon dioxide can plasticize PC so that the T g of PC decreased.

凝胶渗透色谱测试表明，合成过程中存在线形缩聚和成环两种不同的反应机理，产物的重均分子量高达117740，分子量分布指数 P d=1.33；差示扫描量热法测试表明，超临界CO2能增塑PC致使其玻璃化转变温度降低。

The effect of plasticizer on the ionic conductivity of the polyurethane was also investigated.

为了提高聚合物的机械强度、降低玻璃化温度，合成了交联的聚醚聚氨酯。

In this article, the glass transition temperature of a single polyoxymethylene chain adopting the modified bond fluctuation model was studied.

聚甲醛单链的键平均能量随温度增加而增加，比热在玻璃化转变温度 Tg 附近发生突变，同时发现 Tg 与链长 N有：Tg=T∞g -A/ N的关系

It was found that the energy Per Kuhnian bond of a single polyoxymethylene chain increases slowly at TT g , and the specific heat of this system is discontinuous around the glass transition temperature T g .

聚甲醛单链的键平均能量随温度增加而增加，比热在玻璃化转变温度 Tg 附近发生突变，同时发现 Tg 与链长 N有：Tg=T∞g -A/ N的关系

Molecular dynamics simulations of NPT (constant pressure and constant temperature) dynamics are carried out to obtain specific volume as a function of temperature for polyethylene , polypropylene , poly-isobutylene , polyoxymethylene , and polydimethylsiloxane .

用NPT分子动力学模拟来获得聚乙烯、聚丙烯、聚异丁烯、聚甲醛和聚二甲基硅氧烷在不同温度下的特征体积。体积玻璃化转变温度通过对模拟得到的V-T作图的曲线的拐点决定。

The results show that the fibers with good dye ability can be obtained from blends containing certain amount of SIPE, which are made by using an appropriate proportion of cationic dyeable polyesters and recycled polyester.

结果表明：以适当比例和种类的CDP与PETRc共混，制得的三单体含量一定的共混纤维，能够实现阳离子染料常压染色；影响CDP/PETRc共混纤维实现常压染色的主要因素是共混纤维的结晶度和玻璃化温度。

It has been proved that it was an amorphous plastics with high glass temperature,soluble in some solvents at room temperature and the polymer was also an intermediate product of cross-linked copolymer and grafted copolymer.

结果表明，这系列聚合物是具有较高的玻璃化温度的可溶性无规共聚物。聚合物含有不饱和双键结构，可作为交联聚合物、接枝聚合物及其它特种高分子材料的中间体。

It is an amorphous polymer with a sub-zero glass transition temperature, resulting in good low-temperature flexibility.

是一种无定型的聚合物，其玻璃化温度达到零摄氏度以下，因此，在低温状态下具有很好的流动性。

A shrill whistle filled the desert air as they attacked the thick glassy surface with their sixteen thaumaturgy energy rays on the sharp ends of their legs.

当他们用来自腿部的十六道辐射魔光来袭击厚厚的火玻璃化的表面时，沙漠上空响起了刺耳的呼啸声。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。