lead salt

Methods: Erucic rape oil was extracted with cooling crystallization, and compared with lead salt method.

方法: 采用冷结晶法提取芥酸, 并与铅盐法提取芥酸作了比较.

Dustless Compounded Lead Salt Stabilizer

无尘复合铅盐稳定剂

Dustless Compounded Lead Salt Stabilizer Progress and research in lead-free composite solder

无尘复合铅盐稳定剂无铅复合钎料研究及发展

The whole flavones obtained from leaves of hawthorn by the methods of boiling water, alcohol extraction, dilute alcohol percolation, lead salt sedimentation and lime cream sedimentation were extracted.

采用水煮醇提法、稀醇渗漉法、铅盐沉淀法和石灰水沉淀法所提得山楂叶总黄酮，顺次以石油醚、乙醚、乙酸乙酯和正丁醇进行萃取。

Inorganic acid is substituted with cyanuric acid to synthesize organic lead salt. Auxiliary heat stabilizer and multi-function assistants with synergistic effect are selected. Specially for the processing of PVC plastics, XDW high-efficiency multifunction organic lead-salt compound stabilizer is prepared by reasonable formula and special process.

以氰尿酸替代无机酸合成有机铅盐，选择具有协同作用的辅助热稳定剂和多种功能性助剂，通过合理配方和特殊工艺制成PVC塑料加工专用XDW高效多功能有机铅盐复合稳定剂。

Static and dynamic testings have confirmed that thermal stabilization effect of a modified low lead stabilizer is superior to traditional lead salt stabilizers. The results also reveal that the new stabilizer offers good workability, with dust-free environment created in PVC processing workshops.

本文以多种静态和动态热稳定试验证明：TS－D对PVC的热稳定效果超过传统的铅盐类稳定剂，并且具有良好的加工性，可达到低尘操作的良好环境。

The characteristics of dustless compouded lead salt stabilizer are good, and without dust poison.

无尘复合铅盐稳定剂性能优良, 无粉尘毒害.

The fusion time, fusion temperature, and equilibrium torque of rare earth stabilizer system were 2.5 min, 177 ℃, and 19.0 N · m, respectively, which were less than those of lead salt system, 4.3 min, 184 ℃ and 19.5 N · m.

稀土稳定剂体系的塑化时间、塑化温度和平衡扭矩分别为2.5min、177℃、19.0N·m，分别小于同配方铅盐体系的4.3min、184℃、19.5N·m。

Methods: Erucic acid from rape oil was extracted with cooling crystallization, and compared with lead salt method.

方法：采用冷结晶法提取芥酸，并与铅盐法提取芥酸作了比较。