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The redispersible emulsion powder is first physically mixed with other inorganic cementing materials (such as cement, hydrated lime, etc.) and various aggregates and additives to make dry mixed mortar. When the dry mixed mortar is mixed with water, under the action of hydrophilic protective colloid (polyvinyl alcohol) and mechanical shear force, the rubber powder particles are dispersed into the water, and affect the rheology, constructability, compressive bending strength and tensile bond strength of the mortar.   Ceramic tile binder is the cement-based bonding material of ceramic tile, which can be used to paste natural stone such as ceramic tile, polished brick and granite. The addition of redispersible emulsion powder can extend the working time and adjust the time of the newly mixed mortar, improve the water retention performance and anti-hanging performance; Improve the bonding property, deformation resistance and aging resistance of hardened mortar.   External wall insulation system has been applied in the field of the world, and its installation on the external wall of the building mainly saves the energy consumption of the building 40%-70%. Dry mix mortar modified with redispersing emulsion powder is used to bond polystyrene board to the wall while protecting the polystyrene board. For protective mortars as well as cement-based decorative mortars, polymer adhesive powder provides good adhesion, impact resistance, low water absorption and high flexibility even in harsh environments.   After film formation, the emulsion and redispersed emulsion powder can form high tensile strength and bond strength on different materials, and they are combined with cement as the second binder in the mortar, and the cement and polymer play the corresponding special features respectively, so that the performance of the mortar can be improved.   Even if the type of emulsion powder copolymer is the same, due to the different production processes of different manufacturers, the properties of latex powder are different, and its properties in the corresponding mortar should be considered comprehensively when selecting rubber powder. With the increase of the national promotion of the use of dry mixed mortar, the demand for redispersible emulsion powder is showing a rapid growth momentum, which is bound to usher in a new peak of use.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Hot melt adhesive is solvent-free, almost odorless, pollution-free, and easy to apply, so it is widely used in many fields. Hot melt adhesive with ethylene-vinyl acetate random copolymer (EVA) as the base resin is one of the most important varieties of hot melt adhesive, which can be used in packaging materials, book binding, wood processing and other industries.   The development of EVA hot melt adhesive in my country began in the early 1970s. In the 1980s, due to the rapid development of related industries and industries such as printing, food and beverage, wood processing, and electronics, various production lines were introduced to stimulate the rapid growth of new product development and production capacity of EVA hot melt adhesive. EVA hot melt adhesive is mainly used in the following fields in my country.   1 Book binding EVA hot melt adhesive is used for wireless binding, which changes the cumbersome processes of threading round backs, gluing, and covering the cover used in the past for binding books with latex, greatly shortening the book publishing cycle and improving work efficiency and book binding quality. 2 Wood processing In wood processing, EVA hot melt adhesive is mainly used in combination with panel furniture edge banding machines for furniture edge banding, which has changed the backward appearance of manual operation in the past, and is easy to fold and assemble, which improves labor efficiency. 3. Clothing lining EVA and EVAL powders are inexpensive and have good adhesion. They are suitable for various coating processes such as powder coating, powder dot coating, and slurry coating. The hot melt lining made of EVA hot melt adhesive can make the clothing beautiful, crisp, non-deformed, and low-cost. 4 Packaging The bonding ability of EVA hot melt adhesive is relatively stable, not affected by changes in temperature and humidity in the working environment, and eliminates the inherent gluing and peeling problems of packaging machinery. Therefore, EVA hot melt adhesive can be used in the packaging industry in the fields of cardboard and cardboard boxes, cement bags, labeling, food packaging, protective packaging, and packaging container sealing.   EVA hot melt adhesive is also used in the manufacture of electrical appliances such as televisions, air conditioners, refrigerators, as well as the shoemaking industry, PET blow molding bottles, cigarette filter winding, outer packaging tear strips, cable joint sealing, oil pipeline anti-corrosion and other fields.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com   ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

EVA hot melt adhesive is a solvent-free, water-free, 100% solid fusible polymer. It is solid at room temperature and becomes a liquid adhesive that can flow and has a certain viscosity when heated and melted to a certain degree. It is light brown translucent or white after melting.   EVA hot melt adhesive is mainly made of the following four components: base resin, namely EVA resin, tackifying resin, wax, antioxidant, and a small amount of filler can be added in some occasions to increase the gap filling and reduce costs.   EVA hot melt adhesive has the following characteristics: (1). It has fast curing, low pollution, strong adhesion, and the adhesive layer has certain flexibility, hardness, and toughness; (2). After the adhesive liquid is applied to the adherend and cooled and solidified, the adhesive layer can be heated and melted again to become an adhesive body and then bonded to the adherend, with a certain degree of re-adhesion; (3). When using, just heat and melt the hot melt adhesive into the required liquid state and apply it to the adherend. After pressing, the bonding and curing can be completed within a few seconds, and the hardening, cooling and drying can be achieved within a few minutes.   The type of EVA determines the cohesive strength, flexibility, adhesion to the substrate and processability of the hot melt adhesive. For hot melt adhesive, the following properties of EVA should be paid attention to: molecular weight and its distribution, vinyl acetate (VA) content, crystallinity, softening point, melting point, melt index (MI) and melt viscosity, etc., because these properties directly affect the various properties of hot melt adhesive.   As the melt index of EVA increases, its strength, hardness, softening point and viscosity all decrease regularly; and the more VA content in EVA, the greater the elongation at break and the lower the hardness. In addition, when the VA content exceeds 30%, although the adhesion to polar and various non-porous non-polar substrates is improved, this EVA polymer is incompatible with wax, which is a point to be noted when designing hot melt adhesive formulas. In a formula, it is often necessary to use EVA with different MI or EVA with different VA content to obtain satisfactory comprehensive performance.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

EVA resin is short for ethylene acetate-ethylene resin, which is a polymer made of ethylene acetate and ethylene monomer. According to the different contents of ethylene acetate, the copolymers of ethylene and ethylene acetate were divided into EVA resin, EVA rubber and VAE emulsion. .Products containing less than 40% vinyl acetate are EVA resins.    EVA resin has good softness and shock-absorbing properties. It is one of the materials widely used in the footwear manufacturing industry and can be used to make soles, insoles, uppers and other components. It is also often used as a cushioning material, such as knee pads, wrist pads, and ankle pads in sporting goods, as well as car seat pads, motorcycle seat pads, etc.   EVA resin can be molded through various processing methods, such as extrusion, injection, calendering, etc., and it also has shock-absorbing properties. It is an excellent packaging material such as protective film, liner, protective cover, etc. to protect items during transportation and storage. No damage is caused during the process.   The chemical resistance of EVA resin can resist the erosion of many chemical substances. In medicine, EVA resin is often used to make medical instruments and equipment, such as surgical instruments, medical tapes, gloves, etc. It has good chemical resistance and transparency, and meets hygiene and health requirements. It is also an insulating material for electronic products, such as cable insulation tubes, insulating gaskets, etc. It can also be used as a protective material for batteries, with excellent chemical resistance and heat insulation properties.   In terms of building materials, EVA resin can be used as building materials, such as sound insulation panels, heat insulation panels, etc. It has good sound absorption, heat insulation and weather resistance properties, and can improve the comfort of buildings.   Agricultural use EVA resin can be used as agricultural covering film. It has good weather resistance and light transmittance, and can protect crops from bad weather.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Polyvinyl acetate (PVAC), also known as polyvinyl acetate. It is a polymer of vinyl acetate (vinyl acetate) with the chemical formula (C4H6O2)n. It is a colorless viscous liquid or light yellow transparent glassy particles, soluble in solvents such as benzene, acetone and chloroform. Vinyl acetate, the raw material used in PVAc emulsion, is one of the fifty most produced chemical raw materials in the world and is also the cheapest polymer monomer.   China's vinyl acetate output ranks among the top in the world. At present, more than 80% of the domestic vinyl acetate is used in the production of vinylon and polyvinyl alcohol. At the same time, downstream products such as PVAc emulsion, polyvinyl acetal and other copolymers are derived. At present, the domestic production of PVAc emulsion is more than 1 million tons.   The application fields of PVAc emulsion are very wide: 1. Construction industry, can be used for interior wall decorative coatings, colorful coatings, etc. It is also used for cement modification to improve the tensile strength, adhesion and chemical stability of cement mortar or concrete, and to prevent cracking, etc. 2. In the building materials industry, adhesive glue can be produced, such as woodworking glue, white latex, furniture glue, super glue, etc. 3. Paper industry, can be used as adhesive, impregnating agent, rewetting adhesive, 4. Packaging printing, can be used for plastic-plastic bonding, aluminum-plastic bonding, and post-processing of printed paper products In addition, it has certain applications in textile printing and dyeing, fiberglass processing, and biomedicine.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

PVB (Polyvinyl Butyral) is a synthetic resin, which is the product of the acid-catalyzed condensation of polyvinyl alcohol and butyraldehyde. It has many features and a wide range of applications. PVB molecules contain long branch chains, have good flexibility, low glass transition temperature, and high tensile strength and impact strength. PVB resin has good thermal bonding properties and can be connected to other materials through hot pressing or hot melting methods. It has excellent transparency, good solubility, good light resistance, water resistance, heat resistance, cold resistance and film-forming properties.   PVB resin has good weather resistance against ultraviolet radiation and atmospheric oxidation, and can provide long-term protection. Bonds well to glass and other materials. This makes PVB film an important material for manufacturing laminated glass, which can enhance the impact resistance and safety of the glass. This safety glass has good transparency and high impact strength, and is widely used in the aviation and automotive fields.   Because PVB resin has good transparency and optical properties, it is a transparent material with a high refractive index and low hygroscopicity. It is widely used in fields such as optical coatings, optical films and optical glasses.   PVB can also be used for flexo printing, gravure printing, embossing printing, screen printing, and thermal transfer printing in the printing industry. Because it is soluble in alcohol and non-toxic, the printed parts do not retain odor, and can be used in packaging that is sensitive to odor in the food industry. Such as tea/cigarettes, etc. Because the resin is cationic, it has adhesion to glass surfaces with strong anions, and is especially suitable for glass plate decorative silk screen printing.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

EVA film is a thermosetting and sticky film, mainly used in the middle of laminated glass. It has the characteristics of high transparency, high adhesion, good durability and easy storage. ‌ ‌High transparency allows light to penetrate better, reducing light energy loss and improving photoelectric conversion efficiency.   ‌High adhesion, able to firmly bond various materials, effectively ensuring the stability between components.   ‌Good durability, able to resist high temperature, moisture, ultraviolet rays and other environmental factors, ensuring long-term use.   ‌Easy to store, it can be stored at room temperature and is not affected by humidity and water absorption.   ‌Low melting point, easy to flow, suitable for lamination process of various glass, such as patterned glass, tempered glass, curved glass, etc.   Strong sound insulation effect. Compared with PVB film, EVA film has stronger sound insulation effect, especially for high-frequency sound.   Due to various excellent properties, EVA film is widely used in current components and various optical products, especially playing an important role in the packaging of solar photovoltaic modules.‌Solar photovoltaic module packaging, EVA film is used to fix solar cells and provide insulation protection, optical coupling, and provide moderate mechanical strength and heat conduction paths.   In recent years, with the rise and development of the global photovoltaic industry, the market demand for EVA has increased year by year, which has broad market prospects. There is also great room for improvement in the domestic EVA film market.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

PVA optical films have a wide range of applications, including optical lenses, display devices, filters and optical sensors. By using PVA optical film, the performance of optical devices can be improved and better optical effects can be achieved.   PVA optical film has high transparency and excellent optical properties. It can be used as a coating on the surface of optical lenses to improve the optical properties of the lenses. At the same time, PVA optical film also has the characteristics of wear resistance and anti-pollution, which can protect the lens surface and reduce damage.   With the development of electronic products, the demand for display devices is also getting higher and higher. PVA optical film has excellent polarizing effect and high contrast, which is especially suitable for polarizers of LCD displays. It can also be used as anti-reflective coating for touch screens, effectively reducing reflected light and improving the viewing experience.   PVA optical film has good tunability and can be used to make various optical filters. An optical filter is an optical component that selectively transmits or reflects light of specific wavelengths. Such as infrared filters, UV filters, etc. These filters have a wide range of applications in optical imaging, spectral analysis and other fields.   PVA optical films have excellent optical properties and stability and can be used to make high-sensitivity, high-resolution optical sensors. An optical sensor is a device that can convert optical signals into electrical signals and is widely used in optical measurement, optical communications and other fields.   With the continuous development of science and technology, the application prospects of PVA optical films in the optical field will be broader.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

PVB interlayer is a translucent film, mainly used for laminated glass. It is a polymer material made of polyvinyl butyral resin plasticized and extruded with a plasticizer. The appearance is a translucent film with no impurities, a smooth surface, a certain roughness and good softness, good adhesion to inorganic glass, transparency, heat resistance, cold resistance, moisture resistance, and high mechanical strength.   Safety glass produced using all-resin PVB film has superior optical properties, higher light transmittance and lower haze, making the finished glass more transparent. For example, if multiple layers of PVB are used to make laminated glass, the advantages of all-resin PVB will be It will be more obvious. Secondly, the yellowing value of the film is very low and the film is whiter, so that the finished glass will not turn yellow and is suitable for ultra-white laminated glass. The all-resin film is more durable and can withstand the sun and rain. It will not cause degumming, bubbles, aging and other undesirable phenomena after long-term use.   PVB interlayer film is widely used in construction, automobile, photovoltaic and other industries. PVB interlayer films produced with special formulas are also widely used in aerospace, military and high-tech industries, such as aircraft, aerospace products, military instruments, solar cells and solar receivers. It is currently the best adhesive material for manufacturing laminated and safety glass in the world. It is also widely used in construction fields such as building curtain walls, tents, showcases, bank counters, prison viewing windows, steel furnace screens and various bulletproof glass.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

With the rapid development of modern electronic technology, thermal conductive materials are increasingly used in electronic devices. As a new type of thermal conductive material, thermally conductive PVA (polyvinyl alcohol) film has received widespread attention due to its excellent thermal conductivity, good mechanical strength and processing performance. Thermally conductive PVA film has a wide range of application prospects in the field of electronic equipment due to its excellent performance.   1. LED lighting: LED lamps generate a lot of heat during operation, and thermally conductive materials are required for effective heat dissipation. Thermally conductive PVA film can be used as a heat dissipation substrate or insulating gasket for LED lamps to improve heat dissipation efficiency and service life.   2. Electronic components: Electronic components will generate heat accumulation when working, affecting performance and life. Using thermal conductive PVA film as an isolation material or heat dissipation pad between components can effectively reduce the operating temperature and improve reliability.   3. New energy vehicles: The battery packs in new energy vehicles will generate a lot of heat when working and need to be dissipated in time to ensure safe and stable operation. Adding thermal conductive PVA film between battery packs can achieve effective heat dissipation and extend battery life.   4. Communication equipment: The power amplifiers, filters and other components in communication equipment will generate a lot of heat when working and need to be dissipated to avoid equipment damage or performance degradation. Using thermal conductive PVA film to wrap or fill around these components can achieve good heat dissipation and ensure normal and stable operation of the equipment.    

As a new type of thermal conductive material, thermal conductive PVA (polyvinyl alcohol) film has excellent thermal conductivity, good mechanical strength and processing performance. The preparation of thermal conductive PVA film mainly includes raw material selection, blending modification, film forming process and post-processing.   Raw material selection: The main raw material of thermal conductive PVA film is polyvinyl alcohol resin, and a certain amount of thermal conductive filler, such as oxygen, needs to be added Aluminum, boron nitride, etc. The addition of these fillers can effectively improve the thermal conductivity of PVA films.   Blending modification: the polyvinyl alcohol resin is mixed with the thermal conductive filler in a certain proportion, and the blending modification is carried out by high-speed stirring, ball milling and other methods. During the blending process, the filler particles are uniformly dispersed in the resin matrix to form a thermal conductivity network, thereby improving the thermal conductivity of the material.   Film forming process: the blended modified slurry is made into a film by casting, calendering or extrusion processes. In the film forming process, parameters such as temperature, pressure and speed need to be controlled to ensure the thickness, uniformity and surface quality of the film.   Post-treatment: Post-treatment processes such as drying and heat setting need to be carried out after film formation to eliminate the internal stress inside the film and improve dimensional stability.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Polyvinyl alcohol (PVA) is a water-soluble polymer material widely used in the preparation of hemostatic fibers, artificial skin, plasma substitutes, etc. It can also be used as a drug sustained-release carrier material to prepare targeted microspheres. Animal experiments have shown that it is completely harmless and has good biocompatibility. It can be slowly degraded in the body, so it is widely used as a drug carrier. Polyvinyl alcohol microspheres with a particle size of less than 10 microns release drugs into the human body to achieve the purpose of treatment and immunity. For example, PVA microspheres made of erythropoietin, interferon, and cholera toxin B subunit can be absorbed orally. Through dispersion polymerization, polyvinyl alcohol microspheres with a size of 1-10μm can be prepared, and they can also be further chemically converted into various types of functionalized microspheres according to the different requirements of the application field.   Polyvinyl alcohol foam embolic microspheres are medical substances used for embolization of blood vessels. They are mainly composed of polyvinyl alcohol and/or polyglycolide and are specially treated to enable them to swell and embolize blood vessels. Such microparticles are often used in intravascular surgery to prevent blood from flowing into and contaminating the surgical area. In addition, they can also be used to treat ischemic stroke and other vascular diseases.   Features of polyvinyl alcohol foam embolic microspheres include: it can swell upon contact with blood and quickly solidify, thereby effectively embolizing blood vessels. The microspheres are degradable and will be absorbed by the body after a period of time, which helps reduce the risk of complications. In addition, it can be combined with other substances (such as drugs) to achieve specific therapeutic purposes. When using polyvinyl alcohol foam embolic microspheres, strict guidelines and standard operating procedures need to be followed. These microspheres are usually inserted into blood vessels by medical professionals when using endovascular procedures.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.