热稳定的

The results indicate that the effect of alloying elements V and Cr on mechanical properties at room-temperature, creep behavior and microstructures are similar. With increasing contents of V and Cr, their mechanical properties produce little change, the creep resistant property decreases and microstructure grows, which is mainly due to their characteristics of β-stability element and smaller atomic radius compared with Ti. On the contrary, the effects of V and Cr on the thermal stability are quite different. With increasing V content or decreasing Cr content the thermal stability for the alloy becomes better, which may be due to the different solution characteristics of V and Cr element in titanium alloy that V belongs to isomorphous β-stability element and Cr belongs to eutectoid β-stability element.

结果表明：合金元素V和Cr对Ti40合金室温力学性能、蠕变行为和组织的影响具有相似性，即随V和Cr含量的降低，合金室温综合力学性能变化不明显、抗蠕变能力减弱、组织粗化：这与V和Cr同属于β稳定元素、且原子半径都小于Ti原子有关；而V和Cr对于热稳定性能的影响则完全相反，V含量的增加或Cr含量的降低含金热稳定性能优化，其主要原因可能与V属于同品型β稳定元素而Cr属于共析型β稳定元素有关。

The results showed the synergistic effect was the best when epoxidized soybean oil was used as auxiliary heat stabilizer;β-diketone could restrain the early coloring up effectively; when non-lead and non-tin thermal stabilizers were used as main stabilizer, and houghite as auxiliary heat stabilizer, the stability of rigid PVC was improved perfectly, which showed great potentialities in its development.

结果表明：环氧大豆油作为辅助热稳定剂时，与各种主稳定剂的协效作用最好；β-二酮在抑制初期着色方面表现优异；以无铅无锡型为主稳定剂、水滑石为辅助稳定剂时，硬质PVC的热稳定性能有很大提高，因而有着很大的发展潜力。

This has led to development of a series of low toxic and innoxious thermal stabilizers including mainly dust-free compounded lead salts, calcium/zinc compounds,organic stannum,rare earths,organic stibium,hydrotalcite etc.

随着环保意识的逐渐加强，传统的PVC热稳定剂如粉末状铅盐稳定剂、钡/镉类稳定剂受到了一定的限制，目前已相应地开发出了一系列低毒、无毒型热稳定剂，主要包括无尘复合铅盐类、复合钙/锌类、有机锡类、稀土类、有机锑类、水滑石类等。

Decoloring and Spectral Properties Analysis of Innoxious Ultraviolet Absorbents;2. This has led to development of a series of low toxic and innoxious thermal stabilizers including mainly dust-free compounded lead salts, calcium/zinc compounds,organic stannum,rare earths,organic stibium,hydrotalcite etc.

随着环保意识的逐渐加强，传统的PVC热稳定剂如粉末状铅盐稳定剂、钡/镉类稳定剂受到了一定的限制，目前已相应地开发出了一系列低毒、无毒型热稳定剂，主要包括无尘复合铅盐类、复合钙/锌类、有机锡类、稀土类、有机锑类、水滑石类等。

Calcium pimelate, calcium azelate and zinc azelate are prepared by alkali neutralization process, and calcium dimer are prepared using double decomposition reaction, the effect of binary carboxylate heat stabilizer on PVC thermal stability is studied adopting Congo red method and toast with heat method.

通过碱中和法制备了庚二酸钙、壬二酸钙、壬二酸锌，采用复分解反应法制备了二聚酸钙，采用刚果红法与热烘法研究了二元羧酸盐热稳定剂对PVC的热稳定作用。

The Characterization and application scope of organoantimony heat stabilizers were introduced in comparative detail; the effects when it used with other heat stabilizers and the conventional formulation when it used as heat stabilizer for polyvinyl chloride were also introduced.

较详细地介绍了有机锑热稳定剂的表征及应用范围，同时还介绍了它与其他热稳定剂并用时的效果及用作PVC热稳定剂时的常用配方，建议今后在PVC管材中使用。

The results show that stable organic sulfur is the main s9lfur form in ZY coal. Pyrite can be removed under all the atmospheres in the tests, except for nitrogen at 500℃ 1% O2-N2 atmosphere has strong reactivity to remove the stable organic sulfur in ZY coal, especially at 700℃. Under 1% O2-N2 atmosphere, not only a part of stable organic sulfurs can be decomposed, but also more stable organic sulfur-containing structure can be broken down into less stable one.

结果表明，对于ZY煤而言，黄铁矿和不稳定有机硫除在氮气气氛下500℃时热解不能全部分解外，在其他条件下热解时都可以分解。1%氧气对ZY煤中稳定的有机硫的分解有很强的促进作用，不仅可以脱除稳定的有机硫，还可以使更稳定的有机硫断裂生成次稳定的有机硫，在随后的AP-TPR-MS实验过程中，这部分硫在较低的温度下逸出。

The stability effects of the new heat-stable inhibitors of calcium soap and zinc soap are evaluated through the statical and dynamical heat stability test,which show that the new heat stablizer have higher heat stability with heat-stable time two times longer than calcium stearate or zinc stearate,and can be used in non-toxic PVC pro ducts with good economic and social effec

研究结果表明：这种新型钙皂、锌皂具有较高的热稳定效果，在 1 70℃下的热稳定时间是硬脂酸钙、硬脂酸锌的 2倍以上，完全可以替代热稳定效果较差的硬脂酸钙、硬脂酸锌，可用于无毒PVC制品中，具有良好的经济效益及社会效益。

The property of Ba/Zn liquid complex heat stabilizer doped with larium isooctoate was studied.By using the electronic property of La 3+ to synergise with barium isooctoate and zinc isooctoate,both the short term and long term stabilities of the complex stabilizer were improved,which was of benefit to the improvement of the processability and weather resistance of PVC.

研究了异辛酸镧掺杂钡锌液体复合热稳定体系的性能；利用La3+的电子性与异辛酸钡、异辛酸锌进行协同作用，提高了复合液体热稳定剂的初期及长期稳定性，改善了聚氯乙烯的加工性能及耐候性；通过热烘法、刚果红法、热重分析及紫外光谱考查了稀土含量、复配助剂对镧/钡/锌三元体系热稳定性的影响。

Calcium dimer acids and zinc dimer acids were prepared by double decomposition reaction,and their structures were identified by IR.Their effects on heat stability of PVC were tested by way of Congo Red Method and Heating Method.Calcium dimmer acids and zinc dimmer acids were compared with traditional calcium stearate and zinc stearate.

通过复分解法制备了二聚酸钙和二聚酸锌，并通过红外检测证明了其结构；采用刚果红法、热烘法研究了二聚酸钙和二聚酸锌对PVC的热稳定作用，并与传统的硬脂酸钙、硬脂酸锌热稳定剂作了比较。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。