The post era of the most environmentally friendly

2022-08-02
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The post era of stable development of environmental protection and heat not long ago, the plastic pipe professional committee of China Plastics Processing Industry Association issued a declaration on the comprehensive prohibition of lead in PVC pipes. The feedback from several leading heat stabilizer enterprises in China is also very positive. This is undoubtedly of great significance in the development history of China's environmental protection heat stabilizers and has pushed China's environmental protection heat stabilizers into the fast lane of development

the ban on lead has long been the consensus of European PVC heat stabilizer suppliers. In view of EU regulations, they promised to halve the amount of lead salt used as PVC heat stabilizer by 2010 and completely eliminate lead salt as stabilizer by 2015. The lead salt stabilizer will be mainly replaced by the metal mixture of calcium and zinc

the president of the heat stabilizer branch of the special committee of plastic additives of China Plastics Association said: "the collective signing of the Declaration on banning lead in PVC pipes by the plastic pipe industry this time will raise the attention of the whole society to the prohibition of lead, and the market environment of environmental friendly heat stabilizers will also be improved. This provides an opportunity for the heat stabilizer industry to adjust its product structure, and will accelerate the pace of banning lead in the heat stabilizer industry." According to his analysis, the process of banning lead in the plastic pipeline industry may face two tests: on the one hand, it is necessary to meet the requirements of relevant environmental protection standards and realize the upgrading of products, which will inevitably increase the cost, which has a certain pressure on such a low profit industry as PVC pipeline; On the other hand, compared with lead salt heat stabilizers, the existing calcium zinc composite heat stabilizers and organotin heat stabilizers in China still have some gaps in stability, application scope and price. Heat stabilizer manufacturers should also speed up the development of new products with high efficiency and environmental protection when the main engine is not installed at a high level. At the same time, it is necessary to further reduce the production cost through technological research and development

competitive advantages and broad application prospects of plastic pipes

different from traditional materials, plastics have a faster pace of technological progress. The emerging new technologies, new materials and new processes make the advantages of plastic pipes more and more prominent compared with traditional materials. Compared with the traditional metal pipe and cement pipe, the plastic pipe has light weight, which is generally only 1//10 of the metal pipe. It has good corrosion resistance, impact resistance and tensile strength. The inner surface of the plastic pipe is much smoother than that of the cast iron pipe, with small friction coefficient and fluid resistance. It can reduce the water transmission energy consumption by more than 5%. The comprehensive energy saving is good, and the manufacturing energy consumption is reduced by 75%. It is convenient to transport, simple to install and has a service life of up to years. Polyethylene pipes have developed rapidly in the world in the past 10 years. Developed countries have an absolute advantage in the application of polyethylene pipes in the field of water supply and gas. Polyethylene pipes are not only widely used to replace traditional steel pipes and cast iron pipes, but also to replace PVC pipes. The reason lies in the technological innovation of polyethylene pipes in the past 10 years. On the one hand, Caixin new energy automobile is also vigorously trying and promoting spray free materials, which has made great progress. Through the improvement of polyethylene polymerization production process, the strength of polyethylene pipe special materials has almost doubled. On the other hand, there are new developments in the application technology. For example, in recent years, the technology of laying polyethylene pipes by directional drilling method without excavating pipe trenches gives full play to the advantages of polyethylene pipes, making the traditional pipes have no competitiveness in the occasions where this method is suitable

requirements for the application proportion of Building Plastics: in 2005, the proportion of plastic pipes used in the national new construction, reconstruction and expansion projects that make full use of the world's best talents was: more than 70% of building drainage pipes, more than 60% of building water supply and hot water supply pipes, more than 80% of wire protective sleeves, and more than 50% of the cooling material water pipes, more than 70% of village water supply pipes, and more than 30% of urban drainage pipes, More than 50% of urban gas pipelines (medium and low pressure pipes). Therefore, about 760000 tons of various UPVC pipes and fittings are required,; 160000 tons of LDPE and h/mdpe pipes and fittings. In 2010, the proportion of plastic pipes used in new construction, reconstruction and expansion was: more than 85% of building drainage pipes, and the traditional cast iron pipes were basically eliminated; More than 85% of building water supply and hot water supply pipes and heating pipes, more than 90% of wire casing, more than 80% of building rainwater drainage pipes, more than 80% of urban water supply pipes (below dn400mm), more than 85% of rural water supply pipes, more than 50% of urban drainage pipes, and more than 60% of urban gas pipes (medium and low pressure pipes). In the newly-built projects nationwide, the application and popularization rate of building water supply pipeline, building drainage pipeline, wire casing, urban water supply pipeline (below dn400mm), urban drainage pipeline and urban gas pipeline (medium and low pressure pipe) should reach more than 90%

classification and development status of heat stabilizers

in 2007, the total output of heat stabilizers in China was about 340000 tons, an increase of 9.3% year on year. The output of lead salt decreased by 10000 tons, the output of calcium/zinc composite stabilizer increased rapidly, and its output and apparent consumption increased by 50% and 33% respectively. The output of lead salt decreased significantly. The dust-free composite lead salt began to decline in 2008, and the capacity and output of calcium/zinc composite stabilizers doubled. Before that, China's output of heat stabilizers has been growing at an average annual rate of 10% ~ 15%. In 2008, about 600000 tons of heat stabilizers were produced

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