【作者】 王玉春；

【导师】 谭欣；

【作者基本信息】 天津大学 ， 化学工程， 2004， 硕士

【摘要】 包核三盐基硫酸铅是一种低铅的 PVC 热稳定剂，由于其创造性地采用了包核技术，将目前仍广泛使用、在稳定剂市场上占有较大比例的 PVC 稳定剂三盐基硫酸铅包覆在惰性填料微细颗粒表面制成新颖的包核三盐基硫酸铅，大幅度降低了有毒性的铅的含量，并且保持原有的优良的稳定性能。其广泛应用于 PVC 加工中的管材、管件、异型材、电线电缆、扣板等领域。 本文对包核三盐基硫酸铅的合成进行了较深入的研究，实验研究了其最佳合成的工艺条件。研究方法是选用惰性或半惰性材料为核，在它的表面均匀地包覆一层一定厚度的三盐基性硫酸铅。通过实验，将该反应所涉及的工艺参数及反应条件（如反应温度、铅液浓度、包覆量、水料比等）进行了优化，制备出铅含量较低的包核三盐基硫酸铅，并与传统三盐基硫酸铅进行了对比实验。实验表明：在使其各方面的综合性能不受影响的前提下，本实验降低了铅含量，从而降低了成本，减少了环境污染，拓宽了原料来源，具有良好的经济效益和社会效益。更多还原

【Abstract】 The product core-covered trisalty lead sulfate is a PVCheating stabilizer with low lead content. It is made with thetechnology of core covering that is to cover the trisalty leadsulfate, which is vastly used and hold the majority in the filedof PVC heating stabilizer,to the surface of the inertia fillinggranules to make the new core-covered trisalty lead sulfate. Thishas greatly reduced the content of the toxic lead but remain theoriginal better stable properties. This product is widely usedin the manufacturing of pipes,pipe appliances,specialpipes,wires and cables,buckle plate,etc. This article studied the synthesis of core-covered leadsulfate. The best process condition has been studied throughexperiments. The method contains using the inertia orsemi-inertia materials as the core,uniformly covering a certainthick layer of trisalty lead sulfate to the core surface. Thereaction index and conditions have been optimized by tests(suchas reaction temperature,concentration of lead solution,quantityof covering,mixing rate,etc.). Finally the low lead contentcore-covered trisalty lead sulfate has been put out . Thecomparison test has been made between this product and thetraditional trisalty lead sulfate. The results shows thefollowing. Under the condition that no properties are affected,the test has reduced the content of lead which led to thereduction of cost and environmental pollution as well as widenedthe material resources. Ingeneral,the product has bettereconomic and social profits.更多还原