The main differences between the milky white and translucent states of water-based polyurethane resins are as follows: Microscopic Structure • Different particle size: The average particle size of polyurethane particles in milky white water-based polyurethane resin is greater than 0.1 μm; the particle size of translucent water-based polyurethane resin is between 0.001 and 0.1 μm. • Different molecular aggregation states: The molecular aggregation state of milky white resin may be relatively loose, with a relatively disordered arrangement of molecules and many scattering centers; the molecular aggregation state of translucent resin is relatively regular, with more ordered intermolecular interactions and arrangements, and relatively fewer scattering centers. Macroscopic Properties • Differences in optical properties: Due to the larger particle size, milky white water-based polyurethane resin has a strong light scattering effect, resulting in an opaque milky white appearance; the smaller particle size of translucent resin results in weaker light scattering, allowing some light to pass through, thus appearing translucent. • Differences in film formation: Generally, milky white water-based polyurethane resin may have a certain degree of haze after film formation, with relatively low transparency, but possibly better hiding power; translucent water-based polyurethane resin has higher transparency after film formation, better showcasing the original color and texture of the coated object. • Different stability: Translucent water-based polyurethane resin has a smaller particle size, larger specific surface area, and higher surface energy, making it more susceptible to external factors during storage and use, potentially leading to aggregation or deterioration; milky white water-based polyurethane resin is relatively more stable. Formulation and Synthesis Process Aspects • Different hydrophilic component content: The more hydrophilic components the resin contains, the finer the particle size of the emulsion, and the more translucent it becomes. Therefore, milky white water-based polyurethane resins have a relatively low content of hydrophilic components, while translucent resins have a relatively high content of hydrophilic components. • Differences in synthesis process: During the synthesis process, process parameters such as stirring speed, temperature, and reaction time affect the particle size and appearance of the resin. Generally, the more vigorous the stirring, the finer the emulsion particles, and the more likely it is to appear translucent. We research, develop, produce, and sell various acrylic emulsions, water-based polyurethane dispersions, etc., which are applied in packaging lamination, water-based coatings, wood coatings, water-based metal anti-corrosion paints, single and double component water-based plastic paints, leather finishing agents, printing inks and varnishes, water-based composite ink adhesion, laminating adhesives, film adhesiv...

Three Core Advantages of Polyurethane Topcoat: 1. High Weather Resistance: Superior UV resistance compared to epoxy paints; does not chalk or lose gloss under outdoor exposure, maintaining vibrant colors. 2. Strong Comprehensive Protection: Offers excellent wear resistance, impact resistance, oil resistance, and resistance to mild chemicals, with superior mechanical properties. 3. Easy Application: Can be sprayed or brushed, with good leveling properties and a full paint film; fast drying time (approximately 2 hours), improving construction efficiency. Application Scenarios:Surface protection for outdoor facilities such as bridges, machinery, and steel structure factories; the "standard topcoat" for heavy-duty anti-corrosion systems. Sinograce Chemical produces water-based polyurethane resin used in water-based metal anti-corrosion topcoats. Samples are available for testing before purchase; a small quantity of samples is provided free of charge. Please contact us if you have any needs; your satisfaction is our priority. Contact Us Anhui Sinograce Chemical Co., Ltd.

Waterborne Polyurethane Resin Water based polyurethane emulsion PU-20 series is a waterborne polyurethane resin independently researched, developed, and produced by Anhui Sinograce Chemical Co., Ltd. Waterborne polyurethane emulsions PU-203 and PU-201 are suitable for various metal surface treatments and coatings requiring high solvent resistance. Application Fields Advantages of Waterborne Polyurethane Emulsion PU-203: 1. Excellent stability and hydrolysis resistance; 2. Excellent adhesion to metals, glass, etc., and good flexibility; 3. Excellent water resistance and good solvent resistance; 4. Good dryness and electrolyte resistance. Suggested application process for Waterborne Polyurethane Emulsion PU-203: Note: Adding 5% hardener/curing agent can improve water resistance, hardness, chemical resistance, and abrasion resistance. About Samples You can test before purchasing; A small number of free samples are available. please contact us; your satisfaction is our priority. Contact Us Anhui Sinograce Chemical Co., Ltd.

Acrylic adhesives are renowned for their excellent overall performance, especially in industrial applications requiring high strength, aging resistance, and rapid curing. Key Features High Strength and Toughness: After curing, they form a strong and tough adhesive layer, with particularly excellent impact and peel resistance. Rapid Curing: Second-generation acrylates (SGA) and UV-cured acrylates can reach usable strength within seconds to minutes. Environmental Resistance:Weather resistance, UV resistance, water resistance, heat resistance (typically -40℃ to 120℃), and chemical resistance are generally superior to epoxy resins and polyurethanes. Wide Applicability: They have good adhesion to various metals, plastics, and composite materials, and can even bond materials with slightly oily surfaces (such as SGA). Adjustability: Through formulation design, products in different forms (liquid, paste, film) and with different properties (rigid, flexible) can be produced. Main Classifications 1. Reactive Acrylic Adhesives First-generation acrylic adhesives (FGA): Requires mixing, cures slowly, and is now rarely used. Second-generation acrylic adhesives (SGA - commonly known as "AB glue" or "blue and red glue") Characteristics: Non-mixing type, primer type (base agent + primer) or dual-base agent type. The biggest advantage is its ability to bond to oily surfaces, and its fast curing speed (initial cure in minutes). Typical Applications: Structural bonding: Metal/plastic parts for automobiles and motorcycles (such as rearview mirrors, spoilers), speaker magnetic circuits, elevator cars, rail transit interiors, etc. Repair and assembly: Widely used in mechanical repair, equipment installation, and other on-site operations. 2. Ultraviolet (UV) Curing Acrylic Adhesives Characteristics: Instantly cures within seconds under specific wavelength ultraviolet light irradiation, environmentally friendly and efficient, enabling automated precision coating. Typical Applications: Electronics Industry: Mobile phone/tablet display bonding (OCA optical adhesive), touchscreen assembly, camera lens mounting, PCB component encapsulation. Medical Devices: Assembly of disposable medical devices (such as syringes and catheters). Glass Furniture and Crafts: Glass lamination bonding. Fiber Optic Communication: Fiber optic coating bonding and connector protection. 3. Acrylic Pressure-Sensitive Adhesive (PSA) Features: Permanent adhesion; bonds under pressure without curing. Forms: Commonly coated onto substrates (such as films, foam, and non-woven fabrics) to form tapes, labels, and protective films. Typical Applications: Industrial Tapes: Double-sided foam tape (for automotive emblems and mobile phone structural component bonding), high-temperature masking tape (for spray coating masking), VHB strong double-sided tape (for building curtain walls and elevator decorative panels). Labels and Protective Films: Product labels, electronic product surface protective films, packaging ...