Composite polyurethane adhesives are developing rapidly as environmentally friendly materials.

Polyurethane adhesive is an environmentally friendly adhesive, is currently developing rapidly in the polyurethane resin is an important component, with excellent performance, in many aspects have been widely used, is one of the eight synthetic adhesives in one of the important varieties.
china's polyurethane adhesive research and development started in the world in the 1960s. After the 80's, the research on water-used polyurethane adhesive in China is more active, but compared with the level of water-used polyurethane adhesive series industry abroad, it is still in the development stage. In the 90's, due to the urgent need for domestic imported products, related research institutes and production units to increase development efforts, new products continue to emerge. So far, there are some adhesive varieties abroad, our country now also basically have.
Although China's polyurethane industry has a considerable scale, but compared with developed countries, there is still a big gap, the main gap is that the overall production of polyurethane is not large, in addition, the technical level is still lagging behind some developed countries.
1, Adhesive Introduction
Composite polyurethane adhesive industry for fine chemical sub-industry adhesive industry, adhesive refers to the adhesive is through adhesive cooperation, can be glued together by a wide variety of substances. According to the Product Classification of Adhesives by China Adhesive Industry Association, the following 6 categories are divided into: pressure-sensitive adhesives (belts), polymer emulsion adhesives, rubber-type adhesives, polyurethane adhesives, hot melt adhesives and engineering adhesives.
, compound polyurethane adhesive introduction
adhesive refers to a wide variety of substances that can be bonded together by adhesive cooperation. Among them, composite polyurethane adhesive refers to the molecular chain containing urethane -NHCOO-) or isocyanate base (-NCO) type adhesive, mainly used to two or more different or the same properties of membrane-like, flaky material bonding, forming a new composite adhesive. The principle is shown in the figure below:
classification and performance
a wide variety of composite polyurethane adhesive products, classification methods are different, there are three common classification methods:
(1) according to the use can be divided into: packaging, leather, textile shoes, printing, transportation, home appliances and electronic products, furniture and building materials, safety protection, new energy composite polyurethane adhesive;
(2) according to the characteristics can be divided into: ultra-low temperature, foam type, anaerobic type, conductivity, high temperature resistance, high barrier, anti-aging, anti-media, anti-coolant compound polyurethane adhesive and other categories;
(3) according to the different chemical principles can be divided into: reactive composite polyurethane adhesive, non-reactive composite polyurethane adhesive and other two categories. Due to the problems of environmental protection and safe production of non-reactive compound polyurethane adhesives, its market share has been gradually replaced by reactive compound polyurethane adhesives this year.
Performance
Reactive composite polyurethane adhesive refers to a composite polyurethane adhesive containing more than two chemically active components that are cured cross-linked when used, in addition to a wide range of applications, the adhesive also has the following advantages:
adhesive strength is high;
high and low temperature, designable wide range;
health and biological properties are good;
process adaptability is high;
is highly resistant to media.
3, composite polyurethane adhesive applications
composite polyurethane adhesives are mainly used in packaging, printing, leather, textile shoes, transportation, home appliances electronics, furniture building materials, safety protection, new energy, tobacco and so on.
4, composite polyurethane adhesive industry overview
(1) Since the reform and opening up, China's composite polyurethane adhesive industry has been sustained, rapid and stable development, and has formed a certain scale of production, but from the industry's internal point of view, small and medium-sized composite polyurethane adhesive manufacturers are still the main body of the industry. According to incomplete statistics, China's composite polyurethane adhesive production enterprises as many as hundreds, most are still small and medium-sized enterprises, scattered in the country's 28 provinces and autonomous regions, annual sales revenue of more than 50 million yuan and independent technology-based enterprises less than 10;
(2) compound polyurethane adhesive as the industry's high-end products, although due to late start time, relatively little investment in research and development and other historical reasons, domestic production enterprises in a small number of products on the technical level can not compete with international enterprises, but benefit from the continuous expansion of domestic new materials applications and the rapid development of the domestic economy over the past 10 years, still maintained a strong momentum of development, production and sales growth in the past 10 years, the average growth rate of 20%.
(3) in 2009 the value added of domestic industry than in 2008 increased by 11% in the environment, when China's application in the field of plastic packaging composite polyurethane adhesive production reached 215,000 tons, still It has achieved a high growth rate of 26.5%, and although its sales account for only about 5.5% of the total sales of all adhesive varieties, sales account for more than 8% of the total sales of adhesives, which plays an important role in the whole adhesive industry.
Five, the main development trend of the industry
At present, the development of composite polyurethane adhesive industry shows the following major trends
(1) the application of the expansion of
composite polyurethane adhesive as a high-end adhesive, in addition to food, pharmaceuticals, daily chemical, precision instruments, instruments and electronics and other traditional packaging areas have been widely used, in oil printing, household appliances, building materials, transportation, new energy, security and other fields have also begun to have a wide range of applications.
(2) increased industry concentration
In recent years, users of composite polyurethane adhesive product quality, performance and environmental protection requirements are increasing, the industry's corporate brand awareness is constantly strengthened, the market is becoming increasingly fierce. The industry as a whole presents a large-scale, intensive development trend, the industry concentration continues to improve;
(3) Professional development
With the increasing demand for compound polyurethane adhesives in China, the continuous innovation of the application mode, according to customer performance requirements tailored to the development trend of special composite polyurethane adhesives will become the future high-end adhesives, which will put forward higher requirements for the research and development capabilities and professional level of composite polyurethane adhesive manufacturers.
(4) Import substitution trend
In recent years, in some composite polyurethane adhesive products, domestic enterprises have made considerable technological progress, and gradually can replace this part of the imported products, with the national Western giant to compete, while downstream customers from the point of view of reducing their own costs, there is a strong demand for alternative imported products, which also stimulates the development and production of domestic products.
Se6, industry market competition pattern
China's composite polyurethane adhesive industry in the number of small enterprises, widely dispersed, these enterprises to lower technical requirements of products as the main industry, product profit margin is low, so in the bottom of the industry pyramid, a small number of high-end compound polyurethane adhesive independent intellectual property rights Domestic enterprises mainly produce products with high technical content and profit margin, located in the upper part of the industry pyramid, while the international giants, with their strong research and development capabilities and brand advantages, reduce production costs through the establishment of joint ventures or production bases in China, in the market share of the highest-end products to achieve a monopoly, technology research and development has a clear competitive advantage, at the top of the pyramid.
compound polyurethane adhesive as a high-end products in the industry, due to the enterprise research and development capabilities, technical level, sales channels and other requirements are very high, has long been The German Henson Company, the United States Dao Corning Company, the United States 3M Company and other international giants monopolized, many industries need composite polyurethane adhesives are dependent on imports or joint venture products. Since the 1990s, domestic enterprises, research institutes and other enterprises and institutions gradually began to enter the field of independent research and development of products, after years of technical accumulation, and gradually in the composite polyurethane adhesive products have achieved independent knowledge development, to replace imports as the goal.
Plastics soft packaging field is one of the most important applications of composite polyurethane adhesives, plastic soft packaging compound polyurethane adhesives after years of development, its share of composite polyurethane adhesive production and sales has reached more than 50%, with a more mature market. In 2009, China's enterprises produced plastic soft packaging compound polyurethane adhesive reached 215,000 tons. At present, the domestic plastic soft packaging with composite polyurethane adhesive market formed the following pattern: multinational companies at the highest end of the product technology empty, domestic enterprise concentration increased, focus on segments, expanding the market share of the high-end products, and gradually realize product import substitution. "Plastic composite soft packaging adhesive market research" a "China packaging industry
7, market capacity analysis
In recent years, China's adhesive industry continued to develop rapidly, production increased from 1.705 million tons in 2002 to 4.628 million tons in 2010, sales increased from 16.3 billion yuan in 2002 to 59 billion yuan in 2010. (Source: China Monthly Adhesive Industry Association)
. Benefiting from the rapid and steady development of the adhesive industry, compound polyurethane adhesives have developed rapidly in the past ten years, with an average annual sales growth rate of up to 20%, making them one of the fastest growing adhesive products. Among them, plastic soft packaging is the main application area of composite polyurethane adhesive, the field with composite polyurethane adhesive accounted for more than 50% of the total production and sales of composite polyurethane, after years of development, plastic soft packaging compound polyurethane adhesive has become a complete category, high technical level, market mature important compound Polyurethane gum species, in 2009 China's plastic soft packaging compound polyurethane adhesive production of about 215,000 tons, sales of 4.35 billion yuan, respectively, an increase of 26.47 percent, 21.85 percent.
2009, China's compound polyurethane adhesive rapid development, production at an average annual rate of more than 25% continued to grow. 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, the 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, downstream industry technology standard upgrading, composite polyurethane adhesive gradually into ink printing, transportation, safety protection and other emerging areas, the future market capacity expansion speed will be accelerated.
compound polyurethane adhesives in addition to the rapid development of the above emerging areas, and gradually expand more applications in new energy, household appliances, building materials and other emerging areas to get more in-depth applications, conservative estimates, emerging areas with composite polyurethane adhesives in general in the next few years will be far more than 20% growth rate.
8, industry profit level and change trend
In recent years, due to China's sustained and rapid economic development, the continued prosperity of the downstream industry led to the rapid development of the composite polyurethane adhesive industry, the industry's overall gross margin level is relatively stable, profitability and production in direct ratio, especially for the production of high-performance composite polyurethane adhesive products advantages For enterprises, profits have continued to grow in recent years and profit margins are high, mainly due to:
compound polyurethane adhesive industry gross margin is high
It is expected that the gross margin of composite polyurethane adhesives in high-end traditional areas will be relatively stable for a long time to come, and the gross margin of composite polyurethane adhesives used in emerging fields will remain relatively high. As a result, the polyurethane adhesive industry has a high gross margin.
Compound polyurethane adhesive industry product demand is increasing
compound polyurethane adhesive as a new material, its application range is still expanding, especially can adapt to different environments and performance requirements of high-performance composite polyurethane adhesive has been widely used in ink printing, household appliances, building materials, transportation, new energy, safety protection and other emerging areas, these emerging areas of the market is huge, and with the upgrading of these areas of technical standards, composite polyurethane products in the future market.
9. Factors affecting the development of the industry
favorable factors
(1) the application field continues to expand
composite polyurethane adhesive as a polymer new material, in improving product performance, reduce costs and environmental protection and energy conservation and other aspects of outstanding role, with the improvement of product quality and stability in recent years, the popularization of market awareness, in-depth, related downstream industry technical standards upgrade, application areas continue to expand.
(2) Industrial policy support
composite polyurethane adhesive as a polymer new material, plays an important role in the national economy, by more and more attention by government departments, some policy documents clear the future development of the industry ideas, and it is included in the national encouragement and development of the industry, for the composite polyurethane adhesive enterprises to provide a very favorable policy environment.
(3) Upgrade of relevant industry technical standards
Composite polyurethane adhesives are widely used in packaging, printing, household appliances, building materials, transportation, new energy, safety protection and other important fields, the upgrading of technical standards in related fields to the development of composite polyurethane adhesives has brought greater opportunities.
(4) Intellectual Property Protection
In recent years, with the introduction of various laws and regulations on intellectual property protection, the state has been strengthening the protection of intellectual property rights, providing a strong guarantee for the future rapid development of enterprises with independent innovation ability and intellectual property rights.
Favorable factors
(1) raw material price fluctuations are sharp
the raw materials used in the production of composite polyurethane adhesives are petroleum processing products, in recent years, the international market crude oil prices fluctuate sharply, resulting in the composite polyurethane adhesive raw material prices have also changed significantly.
(2) research and development requirements are increasing
composite polyurethane adhesive industry is a technology-intensive industry, product formulation and research and development capabilities are the guarantee of maintaining high profit margins, with the rapid development of the global fine chemical industry, customer demand is constantly changing, and showing a personalized trend, invisibly improve the difficulty of upstream product development, enterprises must always pay attention to product formulation improvement, performance improvement, and expand the application area to meet the changing market demand to consolidate market share.
(3) The localization of multinational enterprises has intensified
with the rapid development of the composite polyurethane adhesive industry, some countries.