What is a plasticizer? Plasticizers, also commonly known as plasticizers. Plasticizers are industrially widely used polymeric material auxiliaries, which are added to plastics to increase the plasticity without affecting the essential properties of the polymer. It can increase the elongation, flexibility and flexibility of plastics, but the hardness, modulus, softening temperature and embrittlement temperature will decrease. Taiwanese manufacturers use a common plasticizer DEHP (later detected by DINP, DNOP, DBP, DMP, DEP, etc.) instead of palm oil to prepare a clouding agent can also produce a thickening effect similar to emulsifier. However, industry insiders pointed out that plasticizers such as DEHP and DINP are not raw materials for food and fragrance. Therefore, DEHP can not only be added to food, but even not allowed on food packaging. Plasticizer DEHP molecular structure "clouding agent" is a legal food additive, often used in fruit juice, jam, beverages and other foods, is made of a mixture of gum arabic, emulsifier, palm oil and various food additives. . The role of plasticizers: The plasticizer is divided into a main plasticizer according to its action, that is, a solvent-based plasticizer; an auxiliary plasticizer, that is, a non-solvent plasticizer; a catalyst-type plasticizer; and a phthalate ester according to its chemical structure. , fatty acid esters, phosphates, polyesters, epoxy esters, chlorine-containing compounds, and the like. Commonly used plasticizers are dibutyl phthalate (DBP), dioctyl phthalate (DOP), epoxidized soybean oil, tricresyl phosphate, triphenyl phosphate, dioctyl sebacate, Chlorinated paraffin, etc. PVC is the main end user of these plasticizers. The main application areas for the addition of plasticizer PVC are wire, cable, floor and wall veneers, building materials, automotive and packaging materials. Plasticizers are the most used in all plastic additives. China's total production capacity is about 1 million tons. Plasticizers are mainly phthalic acid esters with good comprehensive performance and excellent price. The consumption of the world's four major producing and consuming countries and regions - the United States, Western Europe, Japan, and China 70% to 90%. Plasticizer application Plasticizers are large-scale industrial products, which are widely used in various fields of the national economy, including plastics, rubber, adhesives, cellulose, resins, medical equipment, cables and other thousands of products. Concrete application Generally, the higher the water content of concrete, the better its fluidity and processability. However, when the concrete has sufficient moisture, the strength and water content of the concrete after solidification are inversely proportional. Therefore, if the concrete has high strength, the amount of concrete should not be too much, and the T addition will be worse at this time. The plasticizer can reduce the water content without affecting the workability of the concrete (hence the water reduction). ()), while also increasing the strength of concrete. If Pozzolana volcanic ash is added to the concrete, plasticizers are added to increase the strength. This method is often used to increase strength when producing high-strength concrete or fiber-reinforced concrete. 2. Cosmetic application For cosmetics, such as perfumes and nail varnishes, which are often used by women, phthalates are used as a deodorant to maintain the fragrance of the fragrance or to make the nail polish film smoother. ingredient (1) Phthalate Esters (PaEs) are esterified derivatives of Phthalate acid and are the most common plasticizers. (2) Phthalates are widely used in daily and industrial applications, with di(2-ethylhexyl) phthalate (DEHP) being the largest, accounting for three-quarters of the plasticizer production. This is followed by dibutyl phthalate (DBP). (3) Phthalate plasticizer is a colorless liquid with a little aromatic or odorless, medium viscosity, high stability, low volatility, low cost, low water solubility, but soluble in most organic solvents. in. 3. Energetic materials application Plasticizers and pyrotechnic agents generally use plasticizers, which on the one hand can improve the physical properties of the propellant itself or its binder, and on the other hand can also be used as an auxiliary fuel to increase the propulsion provided by the unit mass of fuel (ie More than rush). Plasticizers are particularly needed in solid rocket propellants and smokeless gunpowder to improve physical properties or to increase specific impulses. Plasticizers that increase the specific impulse are generally referred to as energetic plasticizers. 4. Food packaging For example, the plastic wrap generally used, one is a PE (polyethylene) material without additives, but its viscosity is poor; the other widely used is PVC (polyvinyl chloride) cling film, which has a large amount of plasticization. The agent is made of PVC (polyvinyl chloride) material to be soft and increased in viscosity, which is very suitable for the packaging of fresh food.
Seamless Boiler Steel Tubes are produced by Cold Drawn Seamless Processing,
with steel grade of Low Carbon Steel, Medium Carbon Steel, Alloy Steel etc.
Technical Standards as
ASTM A179, ASTM A192, ASTM A210, ASTM A213, ASTM A334, ASTM A335 etc
DIN17175, EN10216-2, GB/T 5310, BS3059, etc.
Steel Grade:
Carbon Steel Grade:
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ST35.8, ST37.0, ST44, ST52;
E155, E195, E215, E235, E275, E355;
195GH, P235GH, P265GH, P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2;
SAE1010, SAE1020, SAE1026, SAE1035, SAE1045;
Carbon steel tube: SA178, A179, A192, A210, SA213, SA214, etc.
Alloy Steel Grade:
T2, T5, T9, T11, T12, T17, T21, T22, T91,T92, 15Mo3,16Mo3, 13CrMo44;
SAE4130, SAE4140, 40Cr, 40Cr4, 10CrMo910, 12CrMo910, 11CrMo910,
25CrMo4, 35CrMo, 35CrMo4, 42CrMo4, 34CrMo4, 20MnV, 20MnV6,20CrMn,12Cr1MoVG;
