Polyvinyl Alcohol (PVA) film is a kind of functional material with excellent properties and wide applications. Because of its unique chemical structure and physical properties, it has been widely used in many fields. The following is a detailed introduction to the properties of polyvinyl alcohol films.

1. Good transparency: PVA film has good transparency, light transmission rate of more than 90%, so that it has a wide range of uses in optical applications, such as liquid crystal display polarizer, optical filter and so on.

2. Excellent mechanical properties: PVA film has good tensile properties and rupture resistance, with high tensile strength and elongation at break. This property makes PVA film has important applications in packaging materials, reinforced fibers and other fields.

3. Good chemical resistance: PVA film has good corrosion resistance to water and organic solvents, so that it can still maintain its physical properties in high humidity environment. This makes PVA film an ideal material for water-soluble fertilizer packaging, medicine preservation and other fields.

4. Solubility: polyvinyl alcohol film has good solubility in water and is a water-soluble polymer that can be completely dissolved. This characteristic makes PVA film can be used as water-soluble packaging film, water-soluble drug coating agent and so on.

5. Thermal stability: PVA film has a high melting point and glass conversion temperature, and can maintain good physical properties at higher temperatures. This enables the application of PVA films in high temperature environments.

6. Biocompatibility: polyvinyl alcohol film is non-toxic and harmless to the human body, has good biocompatibility and will not have any harmful effects on the human body. This makes PVA film widely used in medical devices, artificial organs and other fields.

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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.

Polyacrylamide is a polymer that possesses several special features, making it a versatile solution for various applications, including water treatment. Here are some of its key features:

1. High Molecular Weight: Polyacrylamide can be synthesized with a wide range of molecular weights, ranging from low to very high. This allows for tailoring its properties based on the desired application.

2. Water Solubility: Polyacrylamide is highly water-soluble, which enables easy mixing and dispersion in aqueous solutions. This feature is particularly advantageous for applications where uniform distribution is required.

3. Flocculation and Coagulation: Polyacrylamide can function as both a flocculant and a coagulant. It can promote the aggregation of fine particles in water, forming larger, settleable flocs or facilitating their removal through filtration processes.

4. Rheology Modifier: Polyacrylamide can modify the rheological properties of aqueous systems. Depending on the molecular weight and concentration, it can increase viscosity, improve fluid stability, control flow, and enhance the suspension of solids.

5. Adsorption and Ion Exchange: Polyacrylamide can adsorb onto solid surfaces and participate in ion exchange reactions. This property allows it to interact with contaminants, colloidal particles, and dissolved substances, contributing to their removal from water.

6. Biocompatibility: Polyacrylamide is generally considered non-toxic and biocompatible, making it suitable for various applications, including those involving contact with human or environmental systems.

7. Stability: Polyacrylamide exhibits good chemical and thermal stability, enabling its use in a wide range of pH conditions and temperatures.

These special features of polyacrylamide make it a valuable tool in water treatment, including processes such as clarification, sedimentation, flotation, filtration, and dewatering of sludge. Its ability to improve the efficiency of solid-liquid separation and enhance the overall water quality makes it a versatile solution in the field of water and wastewater treatment.

A variety of adhesives with different functions and uses can be prepared from VAE emulsion and its modified emulsions. Such as PVC film adhesive, interior decoration glue, plywood glue, floor glue, wallpaper glue, wood glue, paper-plastic composite glue, PVC plastic door special glue, difficult plastic bottle label glue, carpet back glue, cigarette glue, external wall insulation board glue, non-woven adhesive, aluminum foil glue, paper tube glue, binding glue, flock glue, leather glue, paulowood glue, roof waterproof glue. Here are some typical varieties.

1. PVC film adhesive: 50 parts VAE emulsion (CW40-707), 25 parts terpene resin aqueous dispersion (TSR-5112TP), 20 parts water and 5 parts ethyl acetate. After mixing evenly, the PVC film adhesive is obtained, and the water resistance of the bonded PVC film is better than that of the acrylic emulsion adhesive.

2. Special adhesive for PVC plastic and steel skin: Mixed with VAE emulsion 40-50 parts, rosin or rosin ester emulsion 20-25 parts, DOP 1 part, toluene 3 parts to 5 parts, defoam-0.3 parts to 0.5 parts, PVC plastic and steel skin special adhesive can be prepared for the bonding of PVC plastic and steel skin with plywood or wood-based board.

3. Building decoration glue: Add a small amount of DBP, inorganic fillers (such as paste precipitated barium sulfate, etc.) and auxiliaries to VAE emulsion to produce environmentally friendly white latex. An appropriate amount of VAE emulsion can also be added to polyvinyl acetate emulsion to obtain white latex such as HL-005 white latex with faster curing, less brittleness and better water resistance.

4. Adhesive for cigarette machine: the reference formula is 55 parts VAE emulsion (CW-707), 30 parts modified monomer, mixed soap-free emulsifier 1.0 parts, DBP5 parts, additives (castor oil), butyl phosphate, ethylene glycol, defoamer (n-octanol) small amount. It is used as an adhesive for lap, joint, molding and packaging of high speed cigarette machine.

5. Plywood adhesive: It is composed of VAE emulsion, DBP, ultra-fine calcined kaolin, fumed white carbon black, etc., adding 10-15 parts of MDI before use, and mixing evenly for bonding solid wood plywood.

6. Paulownia adhesive: The general adhesive used in the joint of paulownia jointing is easy to be red, yellow and black, especially in the rainy and humid hot season. The reason for the color development of paulownia joint may be that the paulownia itself contains a color substance, when the moisture content of the bonding place is higher, the color substance migrates to the joint, resulting in color development phenomenon, resulting in unqualified product quality. Using imported VAE emulsion, polyvinyl formaldehyde adhesive liquid, dibutyl phthalate, nano-calcium carbonate, precipitated barium sulfate and other adhesive, no red cracks were found.

7. Adhesive for building exterior wall insulation board: 100 parts VAE emulsion (CW-705LH), 40 parts quartz powder, 60 parts precipitated barium sulfate, 20 parts ultrafine calcinated kaolin, mixed into paste, adding cement and appropriate amount of water before use to adjust the viscosity required. Adhesive polystyrene foam (EPS) board and concrete, strong and durable.

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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.

Redispersible emulsion powder is a modified emulsion powder obtained by spray drying of a binary or ternary copolymer of vinyl acetate and tertiary vinyl carbonate -VeoVa or ethylene or acrylic ester, which has good redispersibility and is re-dispersed into emulsion when it is in contact with water, and its chemical properties are exactly the same as the initial emulsion.

After mixing with the water in the mortar, it emulsifies and disperses in the water to form a stable polymerization emulsion. After dispersing in water, the water evaporates, forming a polymer film in the mortar after drying, improving the performance of the mortar. Different dispersible latex powders have different effects on the dry mortar.

1. Improve the impact resistance, durability and wear resistance of mortar

The rubber powder particles fill the cavity of the mortar, the densification of the mortar is increased, and the wear resistance is improved. Under the action of external forces will produce relaxation and not be destroyed. The polymer film can exist in the mortar system for a long time.

2. Improve the bonding strength and cohesion of mortar

As an organic binder, dispersible emulsion powders provide high tensile strength and bonding strength on different substrates. It plays a very important role in the adhesion between mortar and organic materials (molded plates, extruded plates) and smooth surface substrates. The film-forming polymer rubber powder is distributed in the whole mortar system as a reinforcing material to increase the cohesion of the mortar.

3. Improve the mortar's weatherability, freeze-thaw resistance and prevent mortar cracking
The RDP emulsion powder is a thermoplastic resin adhesive powder with good flexibility, which can make the mortar cope with the external cold and hot environment changes and effectively prevent the mortar from cracking due to the change in temperature difference.

4. Improve the hydrophobicity of mortar and reduce water absorption
The RDP emulsion powder forms a film in the mortar cavity and surface, and the polymer resin film will not disperse twice after encountering water, preventing the invasion of water and improving the impermeability. Enhanced dispersible adhesive powder with hydrophobic effect has better hydrophobic effect.

5. Improve the bending strength and flexural strength of mortar

The polymer film formed by dispersible emulsion powder has good flexibility. The film is formed in the gap and surface of cement mortar particles to form a flexible connection, so that the brittle cement mortar becomes elastic. The mortar added with dispersible emulsion powder has much better tensile and flexural properties than ordinary mortar.

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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.

Why talk about flue gas desulphurisation? Flue gas desulphurisation (FGD) is often used in power plants, and its high desulphurisation efficiency is the reason why it is widely used. But the process of flue gas desulphurisation will produce a large number of bubbles, which is one of the problems that many power plants need to solve, the reason why the bubbles will be produced, in the process of flue gas desulphurisation will be added to a variety of chemical additives caused by. Can be added in the desulphurisation process of flue gas desulphurisation defoamer.
Flue gas desulfurisation defoamer is a defoamer factory according to the foaming characteristics of flue gas desulfurisation developed by an antifoaming agent, is a combination of chemical reaction characteristics and later to facilitate the purification process and the development of the antifoaming agent to polysiloxane, with a unique chemical inertia and is widely used in a variety of kettle and tower reaction, for the nature of the plant's wet desulfurisation foaming and research and development, to prevent the tower liquid level of the false high, the slurry overflows.

The characteristics of FGD defoamer are generally as follows:
1. Reasonable foam treatment, high pH and low pH reliability at lower concentrations;
2. Cutting resistance, high pressure resistance, small particle size, good heat resistance;
3. Excellent and efficient flue gas desulphurisation defoamer characteristics, good compatibility, good compatibility.

The use of flue gas desulphurisation defoamer:
According to different foaming systems, generally add a few thousandths to a few ten thousandths; use 1 to 5 times water dilution
When used, dilute with 1 to 5 times of water and add it uniformly or add it directly; the temperature of use is below 100℃; it may be delaminated after dilution and placed for too long, but it does not affect the effect, and it can be stirred well when used.
Good effect of defoaming and foam inhibition, it can quickly penetrate into the foam to eliminate the excess foam, and will not foam again in the subsequent process.

Click on the related products links：RK-400S(Silicone Defoaming Emulsion) / RK-700P(High Effective Fermentation Antifoam)

With the rapid development of industry, water pollution is becoming more and more serious, and the high-efficiency and energy-saving ceramic membrane technology plays an important role in modern water treatment. Silicon carbide (SiC) ceramic membrane has the advantages of good thermal shock resistance, high temperature and high pressure resistance, can maintain good stability under harsh conditions and long service life, etc. Silicon carbide (SiC) ceramic membrane separation technology is also considered to be one of the most rapidly developed new membrane separation technologies in recent years.

Application in High Temperature Flue Gas Purification

Silicon carbide membrane tube has unique advantages in the field of high temperature flue gas treatment because of its advantages of high temperature resistance, corrosion resistance and thermal shock resistance.

For particulate pollutants such as PM2.5, the dust removal mechanism of SiC membrane tube is sieve, retention, adsorption and so on.

In addition, silicon carbide membrane tube in high temperature dust removal has achieved large-scale applications, such as coal chemical industry, polysilicon and steel and other industries, such as high-performance SiC membrane tube has been industrial application in the coking industry moving bed active coke desulfurization.

Besides, the catalyst can also be loaded on the it to realize the integration of dust removal and catalysis, which has a good application prospect. For example, the specific surface area can be improved by the pore modification strategy to improve the catalyst loading efficiency.

Schematic diagram of SiC TiO2 Pt catalytic membrane

Application in Oil-Water Separation

Compared with other oxide ceramic membrane tubes, silicon carbide membrane tubes have higher hydrophilicity and more advantages in oil-water separation. This is because the hydrophilic silicon carbide membrane has a greater electrostatic repulsive effect on the oil, so it has a higher water flux and better anti-pollution performance.

For example, membrane bioreactor (MBR) is a new water treatment technology which is coupled by membrane separation unit and biological treatment unit. The silicon carbide membrane bioreactor has also shown good effect in the treatment of oily wastewater.

Compared with the polymer flat membrane, the flux of silicon carbide membrane is increased by more than 50%, which can effectively reduce the chemical oxygen demand and turbidity in water. Silicon carbide membrane shows a good application prospect in the treatment of oily wastewater.

Application in Gas Separation

Silicon carbide membrane tube is widely used in gas separation fields such as hydrogen recovery, nitrogen recovery, acid gas treatment, greenhouse gas capture, water gas reaction, etc., without introducing phase change process, it has the advantage of low energy consumption. The separation layer of the asymmetric silicon carbide membrane tube screens the gas under the action of molecular repulsion, compared with small molecular gases, the diffusion of large molecular gases is hindered, so as to achieve selective separation, so it can be used for the separation of He/Ar, H2/N2, H2/CH4, H2/CO2 and other gases.

The silicon carbide membrane tube is more attractive for the separation of hydrogen. Compared with the high-temperature gas purification and oil-water separation, the application of SiC membrane tube in gas separation is less, mainly because the formed silicon carbide membrane has a dense structure and is only suitable for small molecule gas separation and limited.

Combined with cost and other factors, the competitiveness of silicon carbide membrane tube compared with other gas separation membranes needs to be improved.

BMI-200 powder (BMI-2300)  Phenylmethane maleimide manufactured by Yangchen Tech  is a bismaleimide resin that is known for its excellent thermal stability, mechanical strength, and chemical resistance. These properties make it a valuable material for various high-performance applications across multiple industries. Here are some key applications of BMI-200 powder.

Technical Indicators

Solubility

1. BMI-200 powder manufactured by Yangchen Tech can be used in Aerospace Industry

Composite Materials: Used in the production of advanced composite materials for aircraft structures, including wings, fuselage, and control surfaces.

Adhesives and Sealants: Employed in high-performance adhesives and sealants for bonding and sealing components in aircraft and spacecraft.

Benefits:

High Thermal Stability: Ensures structural integrity and performance at high temperatures.

Mechanical Strength: Provides excellent mechanical properties, enhancing the durability and reliability of aerospace components.

Chemical Resistance: Protects against aviation fuels, hydraulic fluids, and other harsh chemicals.

2. BMI-200 powder manufactured by Yangchen Tech can be used in Automotive Industry

High-Temperature Components: Used in the manufacture of components exposed to high temperatures, such as engine parts, exhaust systems, and heat shields.

Lightweight Composites: Contributes to the production of lightweight composite materials for automotive body panels and structural components.

Benefits:

Enhanced Heat Resistance: Improves the thermal stability of automotive components, ensuring performance under high-temperature conditions.

Weight Reduction: Enables the use of lightweight composites, reducing vehicle weight and improving fuel efficiency.

Durability: Enhances the mechanical properties and longevity of automotive parts.

3. BMI-200 powder manufactured by Yangchen Tech can be used in Electronics and Electrical Industry

Printed Circuit Boards (PCBs): Used in the manufacture of high-performance PCBs, ensuring reliability in high-temperature environments.

Encapsulation and Potting: Employed in encapsulating and potting electronic components to protect them from heat and environmental factors.

Benefits:

Thermal Management: Provides excellent thermal stability, essential for the performance of electronic components.

Electrical Insulation: Ensures high dielectric strength and electrical insulation properties.

Protection: Offers protection against thermal and chemical degradation.

4. BMI-200 powder manufactured by Yangchen Tech can be used in Industrial Applications

Machinery and Equipment: Used in the production of components for industrial machinery and equipment that operate under high temperatures and mechanical stress.

Pipelines and Valves: Utilized in the manufacture of high-performance pipelines and valves for the chemical and petrochemical industries.

Benefits:

High-Temperature Performance: Ensures the reliability and durability of industrial components in extreme conditions.

Mechanical Strength: Provides excellent mechanical properties, essential for heavy-duty industrial applications.

Chemical Resistance: Protects against aggressive chemicals and industrial fluids.

5. BMI-200 powder manufactured by Yangchen Tech can be used in Coatings

Protective Coatings: Used in the formulation of protective coatings for industrial and automotive applications, providing high-temperature and chemical resistance.

Insulation Coatings: Employed in coatings that provide thermal insulation and protection for electrical components.

Benefits:

Thermal Stability: Ensures coatings can withstand high temperatures without degrading.

Chemical Resistance: Provides a protective barrier against corrosive chemicals and environmental factors.

Durability: Enhances the longevity and performance of coated surfaces.

6. BMI-200 powder manufactured by Yangchen Tech can be used in Marine Industry

Hull Construction: Used in the construction of boat and ship hulls, providing strength and thermal stability.

Deck and Superstructure: Employed in bonding and reinforcing deck and superstructure components.

Benefits:

Water and Chemical Resistance: Ensures long-term durability in marine environments.

Thermal Stability: Provides reliable performance under high-temperature conditions.

Mechanical Strength: Enhances the structural integrity of marine vessels.

BMI-200 powder Phenylmethane maleimide is a high-performance bismaleimide resin that offers exceptional thermal stability, mechanical strength, and chemical resistance. These properties make it suitable for a wide range of applications across various industries, including aerospace, automotive, electronics, industrial, coatings, and marine. By incorporating BMI-200 powder into your products, manufacturers can achieve superior performance, durability, and reliability.