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ETFE ethylene tetrafluoroethylene copolymer is a fluorine-based plastic designed to have high corrosion resistance and strength over a wide temperature range. Thanks to its special chemical and physical properties, ETFE is widely applied in the chemical, electrical/electronic, construction, architectural, and automotive industries. ETFE copolymers are basically alternating copolymers, and in the molecular formula, they are isomeric with polyvinylidene fluoride (PVDF) with a head-to-head, tail-to-tail structure. ETFE has excellent electrical and chemical properties. ETFE is especially suited for applications requiring High Mechanical Strength, High Chemical Resistance, Superior thermal and electrical properties.
With low smoke and flame characteristics, ETFE powder is rated 94V-0 by UL It is odorless and non-toxic. Exhibits outstanding resistance to weather and aging, Exception UV transmission Excellent dielectric properties. Its radiation resistance is high with the advantage of being cross-linked by high-energy radiation. Thanks to its special chemical and physical properties, ETFE powder is widely applied in the chemical, electrical/electronic, construction, architectural, and automotive industries.
PAM polyacrylamide is a synthetic water-soluble polymer made from monomers of acrylamide. PAM binds soil particles together. Once soil particles suspended in water are bound together by PAM, they settle out, so water has a harder time washing them out of the field. Water-soluble polymers like PAM have been known to benefit soil properties for a long time. Recently these polymers have gained renewed attention for their use in reducing irrigation-induced erosion, now that the cost of applying PAM has become economically feasible. Other uses of polymers like PAM include treatment of municipal water supplies, food packaging, adhesives, a boiler water additive, film former in the imprinting of soft-shell gelatin capsules, adjuvants in the manufacturing of paper and paperboard, and the list goes on and on.
Anionic polyacrylamide is the generic name for a group of very high molecular weight macromolecules produced by the free-radical polymerization of acrylamide and an anionically charged comonomer, mainly the sodium salt of acrylic acid, sodium acrylate. Anionic polyacrylamide (APAM) as an important flocculant possess the advantages of high molecular weight, acceptable flocculation performance, low cost and green. The anionic chemical groups in APAM are able to neutralize the positive charge of colloid particles in the wastewater and lead them to crash, aggregate and settle.
Along with the increasing need for water resources, the recycling and reuse of municipal wastewater are essential. Cationic polyacrylamide is effective flocculants over a wide range of PH and nontoxic. They could be specially used for the wastewater with negative charges. Cationic polyelectrolyte water treatment is really an effective and cost-saving way.
Polyaluminum chloride is used mainly to remove color and colloidal matter in aqueous systems. It is also used in water treatment plants, clarification of industrial effluents and as a replacement for aluminum sulfate, aluminum chloride, ferric chloride, ferric sulfate and other non-polymerized conventional inorganic salts.
Aluminium sulfate is the most widely used aluminium coagulant (Section 8.20 ). It is available in a number of solid grades such as block, kibbled or ground and is also available as a solution typically containing 8–8.3% w/w Al 2 O 3. Aluminum sulfate serves as a coagulant and flocculating agent in water treatment, making the water easier to clean. It is mainly used in municipal water treatment plants to treat wastewater and potable water.
Concrete superplasticizer refers to an admixture that can reduce water consumption and increase the strength of concrete. It also refers to the admixture for saving cement in the condition of constant workability and strength. While with the improvement of the quality of construction projects, the use of concrete superplasticizers has become increasingly widespread. Superplasticizers reduce the water content and the cement content. Also, it increases the workability of concrete. and reduces the permeability of concrete.
Polycarboxylic acid series superplasticizer is a high-performance water reducer and a cement dispersant for cement concrete applications. Widely used in highways, bridges, dams, tunnels, high-rise buildings and other projects. The product is environmentally friendly, non-flammable, non-explosive, and can be safely transported by train and car.
Naphthalene series superplasticizer (naphthalenesulfonic acid formaldehyde condensate) and some other chemical admixtures play an important role in modern concrete materials and technologies. It can improve the various properties of concrete and promote the development of new concrete technologies. When used together with mineral admixtures (also known as mineral admixtures), it promotes the utilization of industrial by-products (such as ground slag and fly ash) in the cementitious material system, which helps to save resources and protect the environment.