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     After pretanned by Fe 3+ the pelt has higher shrinkage temperature(77℃).
     裸皮经过Fe3 + 预鞣后 ,收缩温度较高 (77℃ )。
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     For example,only 1.5h and 3h were needed for full penetration of mimosa and valonia extract in goatskin under ultrasound, compared to 3.5h and 4.5h in conventional pond tanning.
     例如 ,采用传统池鞣法的橡和荆树皮栲胶 ,需 4 .5 h和 3.5 h才能渗透裸皮 ,而在超声波作用下 ,这 2种栲胶的渗透时间减少为 3h和 1.5 h。
短句来源
     g? Cr 2O 3/l. The fullness and the shrinkage temperature of the leather can be prominently increased by the treatment.
     采用该助鞣剂在软化后处理裸皮 ,可进行无盐浸酸铬鞣 ,可使铬鞣废液中的铬降至 0 .1 3 0gCr2 O3/l,使革的收缩温度与丰满度明显增加。
短句来源
     Besides, with a precipitative freeze dissolution method, Na~+ and Ca~(2+) are localized in the ultrastructure of the pelts swollen by caustic soda and by lime, respectively. Thus the information about penetration and alao distribution of caustic soda (Na~+) and of lime (Ca~(2+)) are obtained separately.
     还利用冰冻熔解沉淀法制样,定位检出了碱、灰裸皮超微结构内的Na~+、Ca~(2+),得到了碱、灰在超微结构内分布及碱、灰能否渗入原纤维的信息。
短句来源
     Combined with 1.0% Cr 2O 3, leathers with shrinkage temperature above 110℃ were achieved. In such a small offer of vegetable compounds, vegetable tanned character of leathers is largely eliminated.
     改性栲胶的用量为 5%~ 10 %时 ,即可以很快渗透裸皮与 1.0 %的 Cr2 O3结合鞣 ,可使成革的 Ts>110℃ ,鞣制废液中的铬含量显著降低。
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Recently improvements of permeability, bonding properties and heat resistance of valonia extractives for rapid tanning (short float) are urged by tanners for military and civil commodities.

近年,军工、民用的制革者反映,橡椀栲胶用于少浴速鞣中,应努力改进其渗透、结合和抗热性能。提高渗透速度,可以扩大橡椀用量,代替一部分杨梅栲胶;增进抗热性能,可以提高军用革质量。采用化学改性方法,在橡椀栲胶生产过程中,添加适量的氨基苯磺酸(Sulfa-nilic acid),以降低栲胶粘度,增进胶粒分散性,使鞣液透入裸皮速度得到改善。但在鞣制中,随改性栲胶用量的增加,成革的耐潮热稳定性下降。为了既有利于渗透,又有利于抗温和结合,经选用氨基苯磺酸与四硼酸钠混合处理后,收到明显效果。试验证明:在军用水牛肉底革鞣制工艺条件下,证明两种改性橡椀栲胶(5-1,5-2型)的渗透速度和成革耐潮热性比普通橡椀有明显的提高。在水牛肉底革初鞣阶段代替33%杨梅栲胶,可以满足军用水牛肉底革植鞣工艺要求。

Oxazolidine is a new tanning agent. For getting more informations a series of oxazolidnes has been synthesized and the tanning properties have been researched. This set is made up 33 oxazolidines. The relationship of the tanning properties and the structure of the oxazolidines is introduced in this paper, moreover, the reaction between the oxazolidines and the amino acids is researched. In this reaction a solid material has been getted. By the analysis of the MS and the atoms, it is told that the structure of...

Oxazolidine is a new tanning agent. For getting more informations a series of oxazolidnes has been synthesized and the tanning properties have been researched. This set is made up 33 oxazolidines. The relationship of the tanning properties and the structure of the oxazolidines is introduced in this paper, moreover, the reaction between the oxazolidines and the amino acids is researched. In this reaction a solid material has been getted. By the analysis of the MS and the atoms, it is told that the structure of this this solid material and got that tentative information of the reaction form between the amino acids the oxazolidines.

本文是对“恶唑烷”系列的合成和鞣性研究。合成部分共制备了三十三种不同结构的恶唑烷,并对它们的结构进行了波谱分析。在鞣性测定实验部分分别用三十三种恶唑烷对小块浸酸裸皮进行鞣制,测定了鞣制后裸皮的收缩温度。对三十三种恶唑烷的鞣性进行了对比,总结出一些规律。另外,用氨基酸与鞣性的恶唑烷进行了反应,初步探讨了氨基酸与恶唑烷的反应型式。

with electron microscopy, the morphological changes have been systematically investigated of pigskin collagen fibrils in upper and middle strata of butt and belly areas of pelts during the process of caustic soda and lime swelling. And the statistics are made about numerical changes appeared in diameters of the fibrils, in length of the bands periods of the fibrils, in spaces between the fibrils. Besides, with a precipitative freeze dissolution method, Na~+ and Ca~(2+) are localized in the ultrastructure of...

with electron microscopy, the morphological changes have been systematically investigated of pigskin collagen fibrils in upper and middle strata of butt and belly areas of pelts during the process of caustic soda and lime swelling. And the statistics are made about numerical changes appeared in diameters of the fibrils, in length of the bands periods of the fibrils, in spaces between the fibrils. Besides, with a precipitative freeze dissolution method, Na~+ and Ca~(2+) are localized in the ultrastructure of the pelts swollen by caustic soda and by lime, respectively. Thus the information about penetration and alao distribution of caustic soda (Na~+) and of lime (Ca~(2+)) are obtained separately.

本课题利用电镜技术,系统地研究了碱、灰膨胀过程中不同部位、不同层次猪皮胶原原纤维的形态变化,统计了原纤维的直径、带状周期长度、原纤维间隙的数值变化;还利用冰冻熔解沉淀法制样,定位检出了碱、灰裸皮超微结构内的Na~+、Ca~(2+),得到了碱、灰在超微结构内分布及碱、灰能否渗入原纤维的信息。

 
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