With the deepening of the field of adhesive research, at present, the development trend of synthetic adhesives in the world is as follows: 1.Construction technology and sizing equipment constantly updated，the adhesive on the higher requirements. In order to improve product quality, simplify the operation process, improve the construction efficiency, developed countries have developed a series of special equipment. Not only to the synthetic adhesive users to provide a better means of construction, but also on the adhesive industry put forward higher requirements. For its sustainable development has created an important condition. 2. High performance synthetic adhesives grow rapidly. High-performance synthetic adhesives, first, the product requirements at the same time have good mechanical properties and functionality; second, the required process on the production line is operational. Currently. As the construction industry and the automotive industry on the adhesive quality requirements of strict, construction conditions demanding, developed countries are committed to the development of high-performance, high-quality new type of rubber. and made great progress. In recent years, the annual growth rate of synthetic adhesive production in developed countries is very low. Some varieties of production even in the decline, but sales have increased faster. The main reason is the development of high-performance synthetic adhesive has brought great economic benefits. High-performance synthetic adhesives include epoxy, silicone, polyurethane and new modified acrylic adhesive. 3. Environmentally friendly synthetic adhesives developed rapidly. With the increasingly stringent environmental regulations, developed countries developed water-based adhesives and hot-melt adhesives and other solvent-free adhesives. In 1998 the developed countries of the synthetic adhesive market, water-based glue accounted for 50%. hot melt about 20%, while solvent-based adhesives accounted for only 20%.The future of the global synthetic adhesive market will be low-pollution water-based glue and hot-melt adhesives, environmentally friendly synthetic adhesive will be the market in favor of goods. At present, China's synthetic adhesive industry trends have three aspects: (1) High-performance rubber will be the rapid development. (2) Environmentally friendly adhesive will become the mainstream of synthetic adhesives. (3) Synthetic adhesive industry is accelerating the rational adjustment of the scale structure, to achieve large-scale restructuring of the synthetic adhesive industry, so that factors of production to the advantages of business concentration, to achieve the intensive production of adhesive, large-scale.

Adhesives can be used to bond metal, glass, wood, paper, fiber, rubber, plastic and other materials together to produce a function or performance greater than the sum of its part and the whole. Adhesive bonding method is increasingly replacing the mechanical coupling method, which is mainly due to the adhesive bonding method has the following advantages. (1) Film, fiber and small particles and other materials with other methods are not good or difficult to link, with adhesive easily bonded together. Typical examples of such uses are: Polyethylene and other plastic film, aluminum foil, cotton fabric and paper laminated gluing; Glass wool insulator and wool glass fiber composite material; Grinding wheel, sandpaper, emery cloth and brake pads; Rayon, nylon, polyester and glass fiber reinforced tires; Corrugated boards, paper bags, labels, tapes, stamps and envelopes; Safety glass; non-woven fabrics and a flocked fabric or carpet made of cotton, wool or fine velvet, a particle board or particle board, a furniture trim panel or a polaroid board. (2) Compared with the traditional weaving method, metal welding method and riveting, bolt or pinning and other mechanical connection method, the adhesive bonding method may be faster and more economical, this is often an important reason for using the bonding method. (3) Can be different materials (such as: aluminum - paper, iron - copper, etc.) together. Moreover, when bonding two kinds of metal, the adhesive can be separated from them to prevent corrosion. When the thermal expansion coefficient of the two sticky objects is very different, the flexible adhesive can reduce the gravitational force caused by the temperature change. The properties of laminates of different materials are superior to those of any of the bonded materials. (4) Stress is distributed in larger areas, can reduce the fatigue damage of the assembly, and may be lighter and stronger than the mechanical connection, such as aircraft wings or tail and body bonding. (5) The strength-mass and dimensional stability of the anisotropic material is improved by cross-bonding. The non-homogeneous and water-sensitive wood can be transformed into warp-resistant, water-resistant plywood; The random fiber mesh can be made into an isotropic nonwoven fabric. (6) In the capacitor, printed circuit and filling resistors, the glue can provide electrical insulation. (7) Gluing can act as a moisture barrier, such as in packaging laminates, the glue line will greatly increase the moisture resistance.

Knitwear design techniques for its varied and unique knitted texture combine to give consumers new visual effects and dress experience. Among them, more printing decorative techniques applied to become an important form of expression and innovative means of knitting product design. Moreover, compared to the dyeing and finishing of knitted garment printing fabric printing aspects of large-volume, long product life cycle and other characteristics, but also reflects a kind of tailor-made in small quantities and strengths, great to meet the people of the current fast pace of life and dress differentiation demand. Far less popular categories of knitted apparel printing and features to expand elaboration. Knitwear popular printing process analysis Knitted apparel printing process can basically be divided in accordance with different screen printing, transfer printing, hand-painted, and other major categories. 1. Screen Printing category Screen printing is the most widely knitted garment printing technology. It is done using a screen plate, in the printed version of the publication membrane system (role play to prevent ink through) and the graphic (by scraping pressure force of the ink printed onto the substrate leak), thereby forming a printed pattern. The entire printing process including pre-computer color design - the film - drying nets - printing - drying several major steps. General printing paste and water slurry is divided into two kinds of mortar, it is divided into offset printing and watermarks. ① water paste printing Water paste printing is the most common of knitted apparel printing process, but also the screen printing industry, a basic printing process. It works similar to staining, the difference is that the fabric of a region which will be "dyed" color of flowers into the desired position. This process can print on almost all of the light background fabric. Water paste printing in an aqueous slurry of water-soluble resin syrup is used to reconcile the diluted paint pigment printed on the clothes with belonging aid itself does not show color, it was transparent and soluble in water. After drying in India, will dissolve in previous washing is completed, and the pigment is combined with the fabrics, insoluble in water, water paste printing parts will become soft after washing, fully consistent with the unprinted feel a sense of body parts. Advantages: water paste printing from the feel, color brightness, color fastness, technology is very mature in terms of experience, etc., it is the most common printing process. More suitable for large prints, spend a good bit fastness, it can be relatively low price printed better results. Inadequate: the limitations of water paste printing process can not be applied in all dark fabrics. Multicolor printing water slurry prone to discoloration cased section. Suitable knitwear categories: mainly used white, light-colored knitted T-shirt printing and knitted underwear products. ② mortar printing Screen pri...

At present, nearly half of all aircrafts flying in the sky are being leased by airline companies from aircraft leasing companies. Renting a standard white plane and modifying the logo is significantly more economical and convenient than redrawing the entire aircraft, what's more, some aircraft leasing companies are not allowed hire debit to change the color of the aircraft. Expensive decoration The cost of color painting of an aircraft at $50,000-200,000, at the same, the entire spraying work takes 2-3 weeks, this period will also cause loss of income.   More color = more weight = more fuel consumption = higher cost Take Boeing 747 as an example, decoration 747 requires at least 250 kilograms of paint, but the whole machine polished paint weight is only 25 kg. Take EasyJet airlines company as an example, only using lighter aerodynamic body coatings can save 2% of operating costs for the company. Imagine, a year of fuel costs about $1 billion 200 million, so 2% means saving about $22 million 400 thousand. Is it suddenly felt that the high end of the body paint up?   Color aircraft resale price is low Because the body color is not white means that buyers need to re paint, this will cause the fuselage to be heavier, so if the clolor of the fuselage is not white will have a negative impact on the resale price of the aircraft. Usually, airlines that choose to buy rather than rent aircraft will use long-term loans to pay. In the fierce competition in the market at the moment, it can be described as a huge investment. So when company operating conditions become worse, they may want to sell or rent their own aircraft. White has a significant temperature control advantage than others.  White reflects all the wavelengths of light, so light is not converted into heat, other colors absorb multiple wavelengths of light and convert it into heat, which causes objects to heat up. In most cases, the low temperature of the white body can only be considered as one advantage. But in terms of "plastic" aircraft (made of composite materials), some airframes enquiry must use white on the surface to ensure that some elements in the material in the limit conditions. Early "Diamond aircraft" company designed aircrafts inquiry outdoor temperature shall not be higher than 38°C, otherwise, these aircraft wing structure ruggedness is not enough. As for concorde, it must use a special, highly reflective white paint to reduce the extreme heat effect caused by friction when the faster than 2 Maher. This could be the reason why white is the standard color of the aircraft.