Heat-shrinkable material, also known as shape memory polymer materials, polymer materials and radiation processing is a technology cross-combination of an intelligent material. Common polymer materials such as polyethylene, polyvinyl chloride, etc. are usually linear structures, and other radioactive sources through electronic accelerator into a network structure of radiation, these materials will have a unique "memory effect", the expansion and cooling of material can be re-heated to restore the original shape of the contraction. Memory performance heat shrinkable material used to make heat shrink tubing can be, and membrane-shaped material, the main feature is the added heat shrink covering the outer surface of the object, can play the insulation, moisture, sealing, protecting and connecting other effects, the radial contraction of materials shrinkage of up to 50% -80%. With the excellent performance of these special, heat-shrinkable material widely used in electronics, home appliances, communications, electric power, automotive, pipe corrosion and other industries.
Radiation processing of polymer materials abroad, development of the industry in the 1950s by the U.S. Raychem Corporation in 1959 applied for a patent first polyethylene heat shrinkable tube. After forty years of development, Raychem Corporation has grown into a 8,000 employees, more than 3,000 kinds of heat-shrinkable product specifications, annual production value of nearly 30 billion dollars in large multinational companies. Globally, the United States Raychem Corporation and Sumitomo Corporation of Japan, respectively, in electrical and electronic heat-shrinkable material market leading position. Overall, the world's heat-shrinkable material market is in a growth phase, the average annual demand growth of 1% or so.
China's basic research on the basic heat-shrinkable material with international standards, but industrial production is lagging behind. In 1994, the Chinese Academy of Sciences, Changchun should be of the establishment of Changchun Heat Shrinkable Materials Co., Ltd., for domestic heat-shrinkable materials industry, the scale of the foundation.
Enter a new round of high-growth period
China's current total market size of heat shrinkable material 30 billion yuan, while watching from the international context, the United States alone TYCO company's electronic products annual sales revenue is $ 1.0 billion, the power class of heat-shrinkable products annual sales revenue of $ 500 million dollars, two types of heat-shrinkable material products combined sales of the current domestic market size of more than four times that of domestic demand growth shrink material potential future products. As China entered the stage of heavy chemical industry, the domestic industrial structure upgrading and international industrial transfer of the heat-shrinkable material downstream industries are the future growth in these areas, which is expected to pull the heat-shrinkable material into a new round of high-growth industry (see Table 1).
Electrical and electronic materials demand growth: With the domestic industrial structure upgrading, heat shrinkable materials, the main application areas such as electronics and electrical industry as the industry's highest growth areas. According to MII statistics, national electronic information industry in 2004 sales revenue of 2.655 trillion yuan to complete, an increase of 42%; eight months of 2005, domestic electronic information industry was 1.4821 trillion yuan sales income, an increase of 40%. In 2004, the completion of China's electronic information products export $ 207.5 billion, an increase of 46% in 2005, 1-8 months, total exports of electronic information products completed $ 122.5 billion, an increase of 51%. With the international scope of electronic, electrical products to the domestic production capacity to accelerate the transfer of the growing trend of global demand for heat-shrinkable materials also will be transferred to the domestic.
Radiation cross-linked heat shrinkable thin tube with electrical and electronic products are mainly distributed applications in electronics, home appliances, communications, information, and automobile industries, use more widely. Domestic market capacity of $ 600 million, of which more than 50% of the heat-shrinkable thin tube located in the Pearl River Delta market. In the downstream electrical and electronic industry in the future against the backdrop of continued high growth, according to the electronics industry demand for heat-shrinkable thin tube correlation analysis, is expected to shrink the domestic electrical and electronic material needs of the average annual growth rate will reach 20-30 percent. The automotive industry with double-wall heat-shrinkable tube tube and environmental heat shrinkable material in foreign markets account for a large proportion of the domestic application is lagging behind. With the domestic auto industry entered a high growth period, the car market with a heat-shrinkable products heat-shrinkable materials for domestic manufacturers to provide a new target market.
Electric products market growth is vast: the "Eleventh Five-Year" period, China will usher in the grid investment, railway electrification, and the climax of subway construction, the power class is expected to shrink demand for the product will enter a period of rapid growth. "Eleventh Five-Year" period, National Grid, Southern Power Grid Corporation will invest up to 12000-13000 yuan, is "15" invest 580 billion yuan during the grid more than twice. At present, high-voltage cable accessories (mainly prefabricated silicone rubber) is about $ 200 million market demand, low-voltage cable accessories in the market capacity is approximately $ 310 million. According to the State Power Corporation plans to add 1998-2000 average of 20 million KVA scheduling, power cable accessories market demand for the next five years will be about 20% growth rate.
According to the Ministry of Railways' long-term railway network planning ", from 2005 to 2020, the Ministry of Railways will invest 2 trillion yuan of funds for railway construction, the average annual investment in 1000 billion yuan. Construction plan in accordance with the national railway, railway electrification and transformation will bring 2-3 billion per year of radiation cross-linked heat shrinkable busbar insulating tube of market demand. Heat shrinkable busbar current capacity of about 1.5 billion market, the market will shrink busbar into the period of rapid growth, short-term growth rate will reach 40%.
Development of pipeline transport to provide a new growth engine heat-shrinkable material: steel pipe anti-corrosion coated with heat-shrinkable sleeve and the metal film is mainly used for laying the pipeline on the next part of the process of protection and corrosion protection in the country belong to the early growth of new products. With the acceleration of domestic energy consumption structure change, oil and natural gas suitable for pipeline transport and gradually increase the proportion of energy, several large petrochemical groups are stepping up the construction of national crude oil, refined oil and natural gas pipeline system, the amount of future domestic pipeline construction will show rapid growth, so as to provide heat-shrinkable material with pipeline corrosion huge market space. China invested 200 billion yuan are being accelerated natural gas transportation pipeline network construction, including large parts of West-East Gas Pipeline and the proposed liquefied gas (LNG) project and supporting the pipeline, "15" China's new natural gas during the main trunk to 10,000 km or so. The country's western development strategy in the key project "Natural Gas" project has already begun to make the amount of domestic pipe coated films increased dramatically.
Export market potential: international companies have moved into the domestic market, with domestic manufacturers to improve technical level and comprehensive strength, the international market also open the door to domestic manufacturers. International higher degree of heat shrinkable materials market monopoly, large multinational companies generally higher product pricing. Domestic firms in manufacturing costs have a greater competitive advantage by virtue of the future expected price advantage in the international market share considerable market share. New materials, for example the long garden, the company products have been gradually into Indonesia, Vietnam, Pakistan and other developing markets, the first half of 2005 reached 17.18 million yuan of overseas revenue, accounting for 10.7 per cent share of the main income, an increase of 155 large %.
Concern the two companies
In addition to several major multinational corporations, domestic industries and enterprises in the number of heat-shrinkable material to hundreds. However, since the main production equipment investment in large-scale electron accelerators, technical difficulty, with electron accelerators, the number of firms to achieve scale production only in the dozen or so listed companies in the Kinwa long garden, and G is the industry leader enterprise.
