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The components of polyurethane ink binder Polyurethane ink binder is a kind of high-molecular compound, composed of polyurethane resin, active plasticizer, additives, fillers, etc. Polyurethane resin is one of its main components, which is a high-molecular compound made from isocyanate and polyol through polycondensation reaction. Hazardous Nature 1. Fire and explosion hazard: Polyurethane ink binder has a relatively high fire and explosion hazard. It is flammable and explosive at high...
Introduction to the Characteristics of Two-component Polyurethane Adhesives
Two-component polyurethane adhesives were developed relatively early. Since their introduction, due to their advantages such as adjustable performance, high bonding strength and wide bonding range, they have become the most diverse and widely produced products among polyurethane adhesives. The categories of two-component polyurethane adhesives can be classified based on the presence or absence of solvents, including solvent-based two-component polyurethane adhesives, solvent-free polyurethane...
Polyurethane adhesives - New materials for future development
In the field of industrial bonding, polyurethane adhesives are becoming the first choice for enterprises with their diverse advantages, driving their market size to continue to rise. This adhesive material, which combines high performance and versatility, is suitable for the needs of multiple industries and conforms to the high-quality development trend of modern industry, becoming an important driving force for enterprises to enhance the competitiveness of their products. Strong versatility...
How to apply waterborne polyurethane adhesives correctly?
Waterborne polyurethane adhesives still hold a certain market share in the flexible packaging market. Their performance and operability are completely different from the existing ester-soluble polyurethane adhesives. How should we correctly apply waterborne polyurethane adhesives? The performance characteristics of waterborne polyurethane adhesives Compared with solvent-based polyurethane adhesives, waterborne polyurethane adhesives, in addition to having the advantages of being...
The core properties and application value of polyurethane adhesives
Polyurethane adhesives, with their unique molecular structure design, possess multiple outstanding properties and occupy an important position in various fields such as construction, automobiles, and packaging, becoming one of the widely used high-performance adhesives. Its performance advantages are mainly reflected in key dimensions such as bonding strength, environmental adaptability and flexibility. Outstanding bonding strength is its core advantage. Polyurethane adhesives can form a...
Polyurethane ink binder is the core component of polyurethane ink. Its core function is to evenly disperse and bond pigment particles into a film, while endowing the ink with key properties such as adhesion and weather resistance. It directly determines the printing effect and usage stability of the ink. Its description is as follows: 1. Core dispersion and load-bearing function The binder is the "carrier" of the ink. The polar groups of the polyurethane molecular chain can combine with the...
Introduction to Polyurethane Adhesives
Polyurethane adhesives are high-performance adhesives prepared by the reaction of polyisocyanates and polyols with polyurethane resins as the main body. They feature strong adhesion, high toughness and wide substrate compatibility, and are widely used in the automotive, construction, electronics, packaging and other fields. In recent years, they have been accelerating their iteration towards environmental protection and high performance. Core Classification and characteristics 1....
Why have polyurethane adhesives become the first choice for many industries
In recent years, polyurethane adhesives have been increasingly widely used in multiple fields such as construction, automobiles, electronics, and packaging, gradually becoming the preferred bonding material in the industry. Behind this trend lies the superimposition of its outstanding comprehensive performance, wide adaptability and multiple advantages that meet the demands of green development. Outstanding performance is the core competitiveness of polyurethane adhesives. It features high...
Ink binder is the core component of ink. As the carrier of pigment, it plays a key role in dispersing pigment and endowing ink with application performance and film-forming performance, which directly determines the printability and print quality of ink. First, disperse and carry pigments. The binder can moisten the pigment particles, disperse the pigment evenly by stirring, grinding and other processes, avoid pigment agglomeration and sedimentation, and ensure the uniform color of the ink....
Polyurethane (PU for short) is a general term for a class of high-molecular polymers whose molecular structure contains carbamate groups (-NHCOO-). It is not a single substance but is made through the addition polymerization reaction of two core raw materials, namely polyols and isocyanates. By adjusting the types, ratios and processes of raw materials, products with completely different properties can be manufactured, and thus it is hailed as the "universal material". The core characteristic...
Comparison of single-component and two-component polyurethane adhesives
Both one-component and two-component polyurethane adhesives take polyurethane prepolymers as the core raw material. With their high bonding strength, weather resistance and flexibility, they are widely used in packaging, automotive, construction and other fields. The core difference lies in the curing mechanism and application scenarios. 1. One-component polyurethane adhesives are premixed systems that do not require on-site mixing. They complete crosslinking and curing by absorbing moisture...
The core difference between polyurethane adhesives and other adhesives
Polyurethane adhesives, as a type of high-performance adhesive, have significant differences in composition, performance and application scenarios compared with traditional adhesives such as epoxy, acrylic and rubber types. From the perspective of core components, polyurethane adhesives use polyurethane resin as the base material and form a bonding layer through the reaction of isocyanate with hydroxyl groups. Epoxy adhesives rely on the cross-linking reaction between epoxy resin and curing...
How to identify the state of polyurethane adhesives?
Normal polyurethane adhesives should possess the following characteristics in terms of physical appearance and condition: In terms of appearance, it usually presents as a uniform liquid state without visible impurities. It comes in a variety of colors, commonly colorless and transparent, light yellow or amber, and there are also milky white ones (such as one-component wet-curing type or water-dispersed type). Regardless of the color depth, the overall texture should be uniform, clear or...
How to choose polyurethane adhesives?
Selecting polyurethane adhesives is a technical task that requires comprehensive consideration. The core lies in ensuring that the performance of the adhesives precisely matches the application requirements. The following are several key steps: 1. Clearly define the bonding material First of all, it is necessary to determine the type of material to be bonded (such as metal, plastic, wood, composite materials, etc.) and its surface characteristics (such as polarity, roughness). The...
The function of polyurethane adhesives
Polyurethane adhesive is a type of adhesive, and its base material is polyurethane polymer. Polyurethane is a type of polymer whose molecular structure contains amino and isocyanate functional groups. These functional groups can chemically combine with other substances in chemical reactions, forming a strong bond. The basic functions of polyurethane adhesives are as follows: 1. Bonding effect The main function of polyurethane adhesives is to bond different materials and surfaces, making them...
Polyurethane adhesive is a type of adhesive mainly composed of polyurethane resin. It forms a high-strength and high-elasticity bonding layer through chemical reactions or physical curing, featuring excellent temperature resistance, chemical resistance, impact resistance and flexibility. It is widely used in automotive manufacturing, construction, packaging, textile and other fields. The carbamate groups in its molecular structure endow it with excellent bonding performance to a variety of...
The core function of polyurethane adhesives
Polyurethane adhesives are a type of adhesive with polyurethane as the main component. With their unique molecular structure and performance, they play an indispensable role in many industrial fields and daily life. Its core functions are mainly reflected in the following aspects: 1. Its most prominent features are outstanding bonding performance and wide material adaptability. The polyurethane molecular chain contains polar carbamate groups and other groups, which can form strong physical...
The magical all-purpose adhesive: Polyurethane adhesive
In daily life, from the smart phone in your hand to the soles of sports shoes under your feet, from the interiors of cars to the insulation layers of high-rise buildings, behind many seemingly unrelated items, there is an invisible "adhesive master" - polyurethane adhesive. What exactly makes it so special that it can become an indispensable "all-rounder" in modern industry? The core mystery of polyurethane adhesives lies in their unique molecular structure. It is not a single substance, but...
The Invisible "Industrial Seamstress" : Ubiquitous Polyurethane adhesives
At this moment when you are reading this passage, it might be quietly guarding a corner of your life - it could be the light rebound of your sports shoes, the quiet insulation of the insulating glass outside the window, or even the sturdy structure that concerns safety in a speeding car. It is polyurethane adhesive, a highly skilled "invisible seamstress" in modern industry. Unlike the traditional perception of glue, the excellence of polyurethane adhesives lies first and foremost in their...
What are the applicable scenarios of polyurethane adhesives?
Polyurethane adhesives are high-performance adhesives. With their unique molecular structure, they demonstrate outstanding applicability in numerous fields. Its core advantages lie in its powerful bonding strength, excellent flexibility, wear resistance, oil resistance and low-temperature resistance. The main applicable scenarios include: 1.Transportation field: This is one of the most important application scenarios for polyurethane adhesives. It is widely used for composite bonding of...
Key Components Its core components are polyisocyanates and polyols. Polyisocyanates (typically containing two or more highly reactive -NCO functional groups) are the main source of the "rigid segments" in adhesives, providing strength, hardness and heat resistance. Polyols (such as polyether polyols or polyester polyols, which contain multiple -OH groups) form "flexible segments", endowing adhesives with flexibility, elasticity and impact resistance. These two are the basis for synthesizing...
What are the core functions and positioning of polyurethane adhesives
Polyurethane adhesives are a type of high-performance and multi-functional bonding material. Their core function lies in forming a strong and tough polymer network through chemical reactions, thereby achieving excellent bonding to various materials. Its key capabilities and market positioning are mainly reflected in the following aspects: Firstly, its core functions are prominently manifested as "strong adaptability" and "high comprehensive performance". It can effectively bond materials with...
Why is polyurethane adhesive considered a stable adhesive?
Polyurethane adhesives are widely regarded as stable adhesives mainly due to their unique chemical structure and the comprehensive performance advantages brought about by it. (1) The polyurethane molecular chain is composed of soft segments (polyether or polyester polyols) and hard segments (formed by the reaction of isocyanate with chain extender) connected by carbamate bonds. This microphase separation structure is the basis of its stability. The soft segment provides flexibility and impact...
Is polyurethane adhesive a dangerous good? What should be noted when using it?
Whether polyurethane adhesives are classified as dangerous goods depends on their specific components. Most common one-component polyurethane adhesives do not fall under the strict category of hazardous chemicals, but some two-component products (containing free cyanate ester monomers) or solvent-based products may be classified as dangerous goods, featuring flammability and harmfulness. When using polyurethane adhesives, the following safety precautions must be noted: 1. Ventilation...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.