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Complex polyurethane adhesives are rapidly evolving as environmentally friendly materials
Public date:2017/12/12   Hits:306
Polyurethane adhesive is an environmentally friendly adhesive, which is an important part of the currently developing polyurethane resin. It has excellent properties and has been widely used in many aspects. It is one of the eight major synthetic adhesives.
China's polyurethane adhesive research and development started in the 1960s on the world. Since the 1980s, our country has been more active in the study of water-borne polyurethane adhesives. However, compared with the large-scale industrialization of waterborne polyurethane adhesives in foreign countries, it is still in the development stage. In the 1990s, due to the urgent need for the imported products localization, related research institutes and production units to increase development efforts, new products continue to emerge. So far, some foreign varieties of adhesive now have our basic.
Although China's polyurethane industry has a considerable scale, but there is still a big gap compared with developed countries, the main difference is that the overall output of polyurethane is not large, in addition, the technical level is still lagging behind some developed countries.
First, the adhesive profile
Composite polyurethane adhesive industry for the fine chemical industry sub-industry adhesives, adhesives refers to the role of adhesion, can be sticky substances together, a wide variety. According to China Adhesives Industry Association on the adhesive product classification, mainly divided into the following six categories: pressure-sensitive adhesive (tape), polymer emulsion adhesive, rubber adhesive, polyurethane adhesive, hot melt adhesives and engineering adhesives.
Second, the introduction of composite polyurethane adhesive
Adhesive refers to the substance that binds the adherends together by adhesion. Among them, the composite polyurethane adhesive specifically refers to the molecular chain containing urethane (-NHCOO-) or isocyanate (-NCO) class of adhesive, mainly used for two or more different or the same nature of the film, the sheet material viscosity Then, the formation of a new composite adhesive. The principle is shown below:
Classification and performance
Complex polyurethane adhesive product range, classification methods vary, there are three common classification methods:
① According to the purpose, it can be divided into: composite polyurethane adhesive for packaging, leather, textile and footwear, printing, transportation, home appliances and electronic products, furniture and building materials, safety protection and new energy;
② According to the characteristics can be divided into: ultra-low temperature, foam, anaerobic, conductivity, high temperature, high barrier, anti-aging, anti-media, anti-slippery agent composite polyurethane adhesives and other categories;
③ According to the different chemical principles can be divided into: reactive polyurethane adhesive, non-reactive polyurethane adhesive and other two categories. Due to non-reactive polyurethane adhesive environment, safety and other issues, this year its market share has been gradually replaced by reactive polyurethane adhesive composite.
Reactive polyurethane composite adhesive refers to containing more than two chemically active components, when used in curing cross-linked composite polyurethane adhesive, in addition to a wide range of applications, the adhesive also has the following advantages:
High bonding strength;
High temperature, can design a wide range;
Good hygienic and biological properties;
High process adaptability;
Strong anti-media.
Third, the application of composite polyurethane adhesive
Composite polyurethane adhesive is mainly used in packaging, printing, leather, textile and footwear, transportation, home electronics, furniture, building materials, safety protection, new energy, tobacco and so on.
Fourth, the composite polyurethane adhesive industry profile
① Since the reform and opening up, China's composite polyurethane adhesive industry has been sustained, rapid and steady development, and has formed a certain scale of production, but from the industry point of view, medium and small-scale composite polyurethane adhesive manufacturers are still the main industry. According to incomplete statistics, there are up to hundreds of compound polyurethane adhesive manufacturers in our country, most of which are still small and medium-sized enterprises. They are scattered in 28 provinces and autonomous regions nationwide, with an annual sales income of more than 50 million yuan, There are less than 10 main enterprises; and most small enterprises have low production technology and management level, small output and low grade of products, which make it difficult to meet the challenge of modern production and market competition.
② As a high-end product in the industry, composite polyurethane adhesives, although historically due to late start-up and relatively low R & D investment, have not yet been able to compete with international companies on the technical level of a few products by domestic manufacturers. However, they benefit from the application of new domestic materials The continuous expansion of the field and the rapid development of the domestic economy over the past 10 years have maintained a strong momentum of development. Output and sales have been growing at a rapid rate over the past 10 years with an average growth rate of 20%.
③ In 2009, the domestic industrial added value increased by 11% compared with 2008. In the same year, China's production of composite polyurethane adhesive used in plastic flexible packaging reached 215,000 tons, still achieving a high growth rate of 26.5%. At the same time, despite the fact that Its sales accounted for only about 5.5% of the total sales of adhesive varieties, but sales accounted for more than 8% of total sales of adhesives, in the adhesive industry has an important position.
Fifth, the main industry trends
At present, the development of composite polyurethane adhesive industry presents the following major trends
① application areas to expand
As a high-end adhesive, the compound polyurethane adhesive has been widely used in the fields of oil, printing, household appliances, building materials, transportation, new energy, safety, etc. in addition to being widely used in the traditional packaging fields such as foodstuffs, medicines, daily chemicals, precision instruments, instruments and electronic devices Protection and other fields have also begun to have a wide range of applications.
② industry concentration increased
In recent years, users of complex polyurethane adhesive product quality, performance and environmental protection requirements are increasing, awareness of the industry's enterprises continue to strengthen the brand, the market increasingly competitive fierce. The industry as a whole showed large-scale and intensive trend of development, and the industry concentration continued to increase. The enterprises with strong R & D capability and high technical level expanded rapidly.
③ professional development
With the growing demand for domestic compound polyurethane adhesives, continuous innovation of application methods, tailor-made special composite polyurethane adhesives according to customers' performance requirements will become the development trend of high-end adhesives in the future. This will greatly enhance the R & D capability of composite polyurethane adhesive manufacturers and The level of specialization put forward higher requirements.
④ import substitution trend
In recent years, part of the composite polyurethane adhesive products, domestic enterprises have made considerable technological progress, and gradually be able to replace the part of the imported products, and the country show the giant show competition, while downstream customers to reduce their own cost from the point of view, has a strong The need to replace imported products also stimulates the development and production of domestic products.
Six, the industry market competition
China's composite polyurethane adhesive industry, the number of small businesses, widely dispersed, these companies to lower the technological level of the main products, low profit margins, so at the bottom of the pyramid in the industry, a handful of high-end self-knowledge of polyurethane adhesive master Property companies mainly produce domestic products with high technical content and high profit margins in the upper part of the industry pyramid; and international giants rely on their strong research and development capabilities and brand advantages, through the establishment of joint ventures or production bases in the country to reduce production costs in Market share of the most high-end products to achieve a monopoly, technology research and development occupy a clear competitive advantage, at the top of the pyramid.
As a high-end product in the industry, compound polyurethane adhesive has high requirements for R & D capability, technical level and sales channels. It has long been monopolized by international giants such as Henkel, Dow Corning and 3M in the United States. Many domestic industries Required composite polyurethane adhesives are dependent on imported or joint venture products. Since the 90s of last century, domestic enterprises, research institutes and other enterprises gradually began to enter the field of independent research and product development, after years of accumulated technology, and gradually in the composite polyurethane adhesive products have made their own knowledge to develop to replace imported As the goal.
The field of plastic flexible packaging is one of the most important applications of the composite polyurethane adhesive. After years of development, the compound polyurethane adhesive for plastic flexible packaging has accounted for over 50% of the total volume of the production and sales of the composite polyurethane adhesive and has a mature market. In 2009, our country produced more than 215,000 tons of compound polyurethane adhesives for plastic flexible packaging. At present, the market of composite polyurethane adhesives for domestic plastic flexible packaging has formed the following pattern: the most high-end product technology of multinational corporations is in short supply, the concentration of domestic enterprises is increased, specialization is focused on segments, the middle and high-end market share is continuously expanded, and import substitution products are gradually realized. "Plastic composite flexible packaging adhesive market research" a "China Packaging Industry"
Seven, market capacity analysis
In recent years, the adhesive industry in our country has continued its rapid development. Its output has risen from 1,750,000 tons in 2002 to 4,628,000 tons in 2010, and its sales have increased from 16.3 billion yuan in 2002 to 59 billion yuan in 2010. (Source: China Adhesives Industry Association)
Benefit from the rapid and steady development of the adhesive industry, the composite polyurethane adhesive has been developed rapidly in recent ten years with an average annual sales growth rate of 20%. It is one of the fastest growing adhesive products. Among them, the plastic flexible packaging is the main application areas of composite polyurethane adhesives, composite polyurethane adhesives in this area accounted for more than 50% of the total production and sales of polyurethane composite, after years of development, plastic flexible packaging with polyurethane adhesive has become a full range of high technical level , The market is mature and important composite polyurethane plastic species, in 2009 China's plastic flexible packaging with polyurethane adhesive production of about 215,000 tons, sales of 4.35 billion yuan, respectively, an increase of 26.47% over 2008, 21.85%.
Since 2009, China's composite polyurethane adhesive rapid development, the output of more than 25% average annual growth rate. In 2013 and 2014, China's composite polyurethane adhesive industry output reached 712,000 tons and 858,000 tons respectively, maintaining a good growth momentum. In 2013 and 2014, sales revenue of the composite polyurethane adhesive industry was 15.65 billion yuan and 19.37 billion yuan respectively.
In recent years, due to the continuous maturation of composite polyurethane adhesive technology and the upgrading of technical standards of downstream industries, composite polyurethane adhesives gradually enter emerging fields such as ink printing, transportation and safety protection, and the market capacity expansion will speed up in the future.
In addition to the rapid development of these emerging areas of composite polyurethane adhesives, and gradually expand more applications, new energy sources, household appliances, building materials and other emerging areas more in-depth application of the conservative estimates, the emerging field of general composite polyurethane adhesives On the next few years will be far more than 20% growth rate.
Eight, industry profit levels and trends
In recent years, due to the sustained and rapid economic development in our country, the continuous prosperity of the downstream industries has led to the rapid development of the composite polyurethane adhesive industry. The overall gross margin of the industry is relatively stable, and the profitability is directly proportional to the output. Especially for the production of high performance composite polyurethane adhesive products Advantage companies, the profits in recent years continued to grow, higher profit margins, mainly due to:
Composite polyurethane adhesive industry, higher gross profit margin
Enterprises producing high-end traditional areas and emerging areas of complex polyurethane adhesives have strong market bargaining and cost-shifting capabilities to cope with fluctuations in raw material prices. It is estimated that the gross profit margin of the composite polyurethane adhesives in the high-end traditional areas will be relatively stable in a long period of time, and the gross profit margin of the composite polyurethane adhesives used in emerging fields will remain relatively high. Therefore, the polyurethane adhesive industry will have a higher gross profit margin.
Polyurethane adhesive industry demand for products continues to increase
Composite polyurethane adhesive as a new material, its scope of application is still expanding, especially to adapt to different environmental and performance requirements of high performance composite polyurethane adhesive has been widely used in printing ink, household appliances, building materials, transportation, new energy sources , Security and other emerging areas, these emerging areas of the huge market, but with the upgrading of technical standards in these areas, composite polyurethane adhesive products in the future market is huge.
Nine, factors that affect the development of the industry
Favorable factors
① applications continue to expand
As a new polymer material, composite polyurethane adhesive plays an important role in improving product performance, reducing cost and environmental protection and energy saving. With the improvement of product quality and stability in recent years, the popularization and deepening of market cognition, technical standards of related downstream industries Upgrade, application areas continue to expand.
② industrial policy support
As a new polymer material, composite polyurethane adhesive plays an important role in the national economy and is receiving more and more attention from the government departments. Some policy documents clarify the future development of the industry and include them in the national encouragement industry Composite polyurethane adhesive enterprises to provide a very favorable policy environment.
③ related industries technical standards upgrade
Composite polyurethane adhesives are widely used in packaging, printing, household appliances, building materials, transportation, new energy sources, safety protection and other important areas. The upgrading of related technical standards has brought more opportunities for the development of composite polyurethane adhesives.
④ intellectual property protection
In recent years, with the promulgation of various laws and regulations on the protection of intellectual property, the state has increasingly strengthened the protection of intellectual property rights and provided a powerful guarantee for the rapid development of enterprises with independent innovation capability and intellectual property rights in the future.
Unfavorable factors
① raw material price volatility
The raw materials used in the production of composite polyurethane adhesives are all petroleum processed products. In recent years, the crude oil price in the international market fluctuates violently, which leads to great changes in the prices of raw materials for composite polyurethane adhesives.
② R & D requirements are increasing
Composite polyurethane adhesive industry is a technology-intensive industry, product formulation and research and development capabilities to ensure high profit margins, with the rapid development of the global fine chemical industry, changing customer needs and showing a personalized trend, virtually improve the upstream Product development difficulty, companies must always focus on product formulation improvements, performance improvements, and expand the application areas to meet the changing needs of the market to consolidate market share.
③ localization of multinationals intensified competition
With the rapid development of the composite polyurethane adhesive industry, some domestic enterprises have begun to gradually acquire independent intellectual property rights and gradually gain some competitive advantages in some fields. However, some multinational corporations realize that the Chinese market has strong development potential because of its implementation of the global Strategic competition hot spots. In recent years, multinational corporations have increased their investment in China, accelerating the process of localization of product manufacturing and scientific research and reducing their costs.

Ten, the industrial chain
Industry upstream and downstream industry chain
Upstream industry
Polyurethane adhesive upstream of the industry for the basic petrochemical raw materials industry, the main raw materials for the two ethanol, adipic acid, isophthalic acid and so on.
At present, 95% of the raw materials in the industry have been domestically produced, mainly provided by Sinopec, PetroChina, Wuer (China) and Yantai Wanhua. Overall, the raw materials for composite polyurethane adhesives are generally in a balanced supply and demand situation.
Downstream industry
Due to the wide range of applications, the downstream industries of composite polyurethane adhesives include packaging, printing leather, textiles, footwear, household appliances, electronics, furniture, building materials, transportation, new energy sources, safety protection and tobacco.
XI, industry-related laws and policies
"Guiding Catalog of Industrial Structure Adjustment (2005 Edition)", "Outline of the 11th Five-Year Plan of Economic and Social Development of the People's Republic of China", "Outline of National Medium and Long-term Scientific and Technological Development Plan (2006. 2020)", "Foreign Investment Industrial (2007), Administrative Measures on the Accreditation of High-tech Enterprises (April 28, 2008), High and New Technology Fields Supported by the State (Guo Fa Fa Huo [2008] No. 172) and other policy documents proposed positive development Economic and chemical industry, at the same time the adhesive as a key new material development, and its inclusion in the state to encourage the development of industries.
China Petroleum and Chemical Industry Association released the "China Petroleum and Chemical Industry," Eleventh Five-Year "Outline for Development clearly pointed out that the adhesive industry, focusing on the development of environmentally friendly and high performance adhesives, such as polyurethane adhesives, silicone adhesives, low formaldehyde emission The amount of urea-formaldehyde glue, epoxy adhesives.
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