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Polyurethane Synthetic Leather For Shoes
Polyurethane Synthetic Leather:
The polyurethane synthetic leather with non-woven fabric as the base and polyurethane as the coating has a rich and soft feel close to natural leather, beautiful appearance and excellent processing performance. It has the advantages of high strength, air permeability, wear resistance, cold resistance, aging resistance, solvent resistance, tear resistance and microbial resistance. It is widely used in shoe making and gradually replaces the PVC artificial leather with relatively poor air permeability and moisture absorption and difficult to be degraded, It becomes an ideal imitation leather product instead of natural leather.
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Study On Improving The Properties Of Shoe Leather
Wear resistance:
The wear resistance of vamp material is one of the important indexes reflecting the quality of shoe products. In the process of wearing, the heel often scrapes and rubs with the external environment along with the movement of people’s feet. If the upper material does not have good wear resistance, it will cause fading, fuzzing, ballooning, peeling or damage of the surface coating of the upper material, thus affecting the service life of the shoe.
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Study On Application Characteristics Of Super Fiber Leather In Products
Features of super fiber leather:
The full name of microfiber leather is “Microfiber Reinforced leather”. It has extremely excellent wear resistance, ventilation, aging resistance, softness and comfort, strong flexibility and environmental protection effect advocated now. It has been increasingly recognized by the market. Its wide range of applications, large number and varieties are beyond the satisfaction of traditional natural leather. The leather material itself has elegant color, excellent touch and bright appearance, which has an excellent advantage in the product market. Super fiber leather is generally softer than natural leather, wear-resistant, and has a better handle. It is relatively easy to take care of, with the characteristics of ventilation and warmth. And the super fiber leather is also cheaper and better than the real leather.
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Study On Resin Modification Of Waterborne Alkyd Resin Coatings
Alkyd resin coating has become one of the most studied and produced coatings in the coating industry because of its easy availability of raw materials, low price and excellent gloss, flexibility and adhesion. However, the traditional alkyd resin coating has some disadvantages such as low coating hardness, water resistance and heat resistance, and its application can not meet the requirements of industrial development for high performance. It is imperative to modify and expand the application field of alkyd resin coating.
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Synthesis Of UV Curable Waterborne Polyurethane Acrylate Coatings
Uv-wpua coating is composed of oligomer, photoinitiator, active diluent, etc. Oligomer is the most important component in uv-wpua coating. Its structure determines the basic properties of UV curing film, such as hardness, flexibility, wear resistance, water resistance and corrosion resistance. Photoinitiator is an important component of UV curing system, which plays an important role in the sensitivity of UV curing process and also affects the final performance of cured film. Uv-wpua coating uses water as active diluent, which greatly reduces the use of organic solvents.
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Waterborne Polyurethane Matting Resin
Aqueous polyurethane is an aqueous solution, dispersion or aqueous lotion formed by polyurethane resin in water. It is widely used in building, home, automobile, leather clothing, household appliances and other decorative coatings. Waterborne polyurethane can be used to prepare matting coating. At present, the matting effect of coating resin is mainly obtained by adding matting agent and self matting modification of resin.
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Study On Modification Of Waterborne Polyurethane Leather Finishing
In the process of leather production, finishing is a very important process, which has a very important impact on the use value of leather. With the development of economy and the continuous improvement of people’s living standards, people have higher and higher requirements for leather finishing agents, and in recent years, they have gradually moved closer to the environment-friendly type. The waterborne polyurethane leather finishing agent can effectively avoid the pollution and toxicity of traditional finishing agents, and has the characteristics of easy storage, transportation and non combustion. It has excellent performance, but it still has some shortcomings in wear resistance and water resistance. It needs relevant staff to actively explore and modify the waterborne polyurethane leather finishing agent.
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Application Of Water-Based Environmental Protection Ink In Food Packaging
As a new type of packaging and printing material, the biggest advantage of water-based ink is that it does not contain volatile organic solvents. Its use reduces the amount of volatile organic compounds (VOCs), does not damage the health of ink manufacturers and printing operators, and improves the environmental quality. Therefore, it can be called an environmental friendly ink. The biggest characteristics of water-based ink are no pollution to the environment, no impact on human health, no combustion, and good safety. It can not only reduce the residual toxicity on the surface of printed products, make it convenient to clean printing equipment, but also reduce the fire risk caused by static electricity and flammable solvents. In addition to environmental protection, the printing characteristics of water-based ink are also good. The water-based ink has stable performance, does not corrode the plate, simple operation, low price, good adhesion after printing, strong water resistance and rapid drying. Water based inks are not only used in flexographic printing and screen printing with great development potential.
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Pure Problems Of Water-Based Ink In PVC Color Film Intaglio Printing
As an alternative to traditional paint, PVC color film is a widely used decorative material for modern household cabinets, wardrobes, blister wood doors, integrated walls, plastic floors and other building materials due to its high efficiency and realistic color. The traditional PVC plastic color film is printed by solvent based ink intaglio printing. Because there are a large number of volatile organic compounds (VOCs) in the solvent based system, the volatilization of VOCs in the printing process brings bad production and operation environment, odor residue and solvent volatilization, which brings about gas pollution and waste of petrochemical resources.
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Study On The Application Of Water-Based Resin In Microfiber
Technical problems faced by Microfiber:
1.1 lack of air permeability and moisture permeability:
After the previous treatment of super fiber leather, the surface layer and adhesive layer are treated, which leads to its air permeability and moisture permeability no longer. In general, the top resin of super fiber leather is TPU or oily PU resin, because it is easy to form a film. However, it also has some disadvantages, such as no air permeability and moisture permeability after coating. This leads to the unique performance of the super fiber being affected and no longer has advantages.
