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Environmental protection pressure has prompted some traditional solvent-based products to gradually withdraw from the market and replace them with water-based, high solid content, powder products, etc.Waterborne polyurethane, as an important member of waterborne products, is facing unprecedented development opportunities with its unique excellent properties.In addition to the leather industry, it ...
Water-based pressure-sensitive adhesive is a type of adhesive that uses water as a solvent and is pressure-sensitive, that is, it can adhere quickly to the surface when slight pressure is applied. Due to its environmental protection, non-toxic, cost-effective, adjustable viscosity and other advantages, it has gradually become the mainstream product in the pressure sensitive adhesive market. Accord...
Let's take a look at the characteristics of water-based acrylic emulsion! 1.Excellent adhesion The polymer structure of the aqueous acrylic emulsion contributes to the flow and wettability of the molecular chains on the surface of the substrate, making the coating and the substrate molecules in close contact to achieve high adhesion. 2.The high bearing capacity of the filler can significantly redu...
1. The effect of membrane material There are dust adsorption, particle impurities, poor plasticization and other crystal points in the film. The moisture absorption on the film surface of the material and the precipitation of additives in the material will cause composite bubbles. The thickness of the film should be as uniform as possible, if the distribution is uneven, it is easy to cause the imb...
Acrylic paint is a fast drying paint made from pigments suspended in acrylic polymer emulsions and plasticizers, silicone oils, defoamizers, stabilizers, metal soaps. Acrylic paint is water-soluble, but becomes resistant to water when dried.Depending on the amount of paint diluted with water, or modified with acrylic gels, media, or pastes, the final acrylic paint can resemble watercolor, gouache,...
Laminating glue is currently a kind of strong glue widely used in the market, so what is the application processing process of laminating glue? The application processing technology of laminating glue is as follows: 1, the composite method is dry composite, that is, the coating machine should use a dry composite machine with curing furnace and composite roller heating. 2, curing furnace ambient te...
There are four common waterborne polyurethane thickeners: ①Inorganic thickeners, such as flake silicates, fumed silica, etc.; ②Natural organic thickeners, such as cellulose ethers; ③Synthetic organic thickeners, such as polyacrylates, polyvinylpyrrolidone; ④associative thickener. This paper mainly introduces the associated emulsion thickener. Associative emulsion thickeners are non-ionic synthetic...
In gravure printing, ink resolubility is also a key indicator to test the performance of ink. Especially in the color ink printing, the moderate resolubility can not only make the color fully displayed, but also solve the problem of shallow plate mesh blocking and overprinting cross-color. In color ink printing, according to the different hue requirements, the depth of the ink hole mesh of the pri...
After the ink is stored for a period of time, the upper part of the ink appears thin in the container, the viscosity is small, and the color and concentration are relatively poor; The lower part is thick, the viscosity is large, and the color and concentration are also relatively good. Intaglio printing inks are thin and have a small viscosity, because the pigment is poorly dispersed in the connec...
In order to prevent ink delamination and pigment precipitation, users must be fully stirred before printing. The following summarizes the faults and elimination methods of screen printing ink in use for your reference. 1.Poor adhesion: the reason is improper selection of ink, insufficient pre-press treatment, impurities in the substrate, insufficient drying temperature, insufficient time, improper...
With the development of the application of digital inkjet printing technology in the clothing industry, environmental monitoring is more stringent and the demand for small batch production and personalized customization is increasing. Therefore, the requirements for textile coating ink are becoming higher and higher, and the raw materials for the production of textile coating ink are bec...
Due to the hydrophobic properties of waterborne polyurethane resin, it is difficult to dissolve in water or disperse uniformly, and the high reactivity of isocyanate groups to water, the direct synthesis of waterborne polyurethane faces many challenges. Therefore, to achieve the preparation of waterborne polyurethane, the primary strategy is to cleverly integrate hydrophilic functional groups (suc...
Water based polyurethane emulsion has soft properties, so that it has good adhesion when attached to the surface of the object; At the same time, it can maintain a certain strength and does not crack. It is especially suitable for articles in high temperature, humid and chemically corrosive environment. This substance also has superior wear resistance and film smoothness, so it can form a uniform ...
Waterborne Polyurethane (WPU) is a polyurethane system using water as a solvent or dispersion medium. In recent years, with the increasingly strict environmental regulations and the improvement of people's environmental awareness, waterborne polyurethane, as an environmentally friendly material, has received extensive attention and research. First, the characteristics of waterborne polyuretha...
1.Touch optimization: the pursuit of softness and fullness In view of the frequent skin-to-skin contact of fabrics, the primary goal of the design of waterborne polyurethane coatings is to achieve soft touch and full form. This requires us to carefully balance the ratio of hard and soft segments in the formulation adjustment, while carefully selecting the types of both to ensure that the coating r...
In the process of UV flexographic printing, the viscosity of the ink is one of the key factors that affect the printing quality and effect. Choosing the right viscosity UV flexographic ink is crucial to ensure printing quality and efficiency. When adjusting viscosity, it is usually necessary to consider many factors such as printing equipment, printing materials, image details and the expected pri...
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