Oleic acid amide: oleic acid amide genus what aids, what is slippery agent, what role, what are the common type, usage or dosage is.-Iota

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Service > Oleic acid amide: oleic acid amide genus what aids, what is slippery agent, what role, what are the common type, usage or dosage is.

Oleic acid amide: oleic acid amide genus what aids, what is slippery agent, what role, what are the common type, usage or dosage is.

2.1 BOPP film BOPP film material used in the secondary arc Ingredients homopolymer box lettuce Valley Wind greedy Fen Kai bundle wrapped in cloth BOPP film grade polypropylene Compound, isotacticity at about 97%, a melt index of about 2.0g / 10min. Early production of BOPP films are mainly due to imports of polypropylene, are now largely self domestic production, such as Shanghai Petrochemical, Yanshan Petrochemical, Maoming Petrochemical Polypropylene can produce BOPP film, and stable performance, to meet the production line and the market requirements. The production of heat-seal film, in addition to polypropylene, but also need sealing material. Sealing material is generally an ethylene - propylene binary copolymer or an ethylene - propylene - butene terpolymer, heat-sealing material is applied to only the film surface, at a higher temperature the film can be bonded to each other through a sealing machine, Acronym heat sealability. Seal initiation temperature lower than the temperature of the terpolymer is a binary copolymer, so that a wide range of heat-sealing temperature. At present, China BOPP film industry used sealing materials largely from imports, but also part of the use of domestic materials. 2.2 BOPP film functional additives BOPP film production line high degree of automation, production speed, large daily consumption of raw materials, BOPP functional additives add less, usually thousands of PPM. Production process, can not, as the production of blown film as the CPP or additives mixed with a large amount of polypropylene, therefore, the actual production application, usually with various additives and kneaded by a certain percentage of polypropylene masterbatch made material, then the master batch production in order to increase the aid dispersion and homogeneity. Category BOPP functional additive masterbatch more, including antistatic masterbatch, slip masterbatch, Stiffness masterbatch, AR masterbatch, pearlescent masterbatch, whitening masterbatch, antiblocking masterbatch, synthetic paper masterbatch , anti-droplet masterbatch, extinction masterbatch, anti-oxidation materials such as mother. 2.2.1 antistatic masterbatch antistatic masterbatch antistatic agent used mostly glyceryl monostearate and ethoxylated amine complex matter. Mechanism of antistatic agents are: organic antistatic agent through the lipophilic group in the interaction with the polypropylene in the polypropylene increases its compatibility; on the other hand, the antistatic agent by hydrophilic groups and air water interactions, the film surface to eliminate the accumulation of electrostatic charge. In the actual production of BOPP film, usually by adding an appropriate amount of the antistatic agent, in order to eliminate static electricity BOPP film production and use of the process due to friction generated. Strong migratory antistatic agent is a surface active agent, usually added to the core layer film, in order to ensure the long-term antistatic effect film products. The amount of the antistatic agent BOPP film products and market product requirements related to high demand for antistatic BOPP film (such as product packaging powder and dust), can increase the amount of the antistatic agent. But is particularly noteworthy, since the antistatic agent is a low melting point surfactant, which migrate to the film surface to form a thin organic layer, with the decrease of the ambient temperature, the film in the winding process due to tension generated stress and radial pressure causes the organic layer is solidified, resulting in a film adhesion. Therefore, in the actual production of BOPP film, in addition to the core layer in the film was added antistatic masterbatch, but usually added in the surface layer of inorganic silicon-based anti-blocking agent, an antistatic agent in order to eliminate the negative effects brought about. 2.2.2 The slip masterbatch slip masterbatch BOPP film lubricant is a certain proportion of polypropylene by a single-screw or twin-screw extruder kneading. In the production of BOPP film, the lubricant applied mainly erucamide, oleamide, ethylene bis stearic acid amide and silicone lubricants. Erucic acid amide and oleic acid amide has good external lubrication, erucic acid amide oleic acid amide temperature resistance better than the decomposition temperature of up to 220 ℃, more suitable for the production of polypropylene masterbatch production and BOPP films. The oleic acid amide decomposition temperature of about 180 ℃, the actual production of masterbatch often added antioxidants and other additives, in order to improve its high temperature capability. Ethylenebis stearic outer poor lubrication, the lubrication medium. These three kinds of lubricants, are migrating substance generally added to the core layer of the film, they migrate to the film surface to form a thin layer of lubricant, to reduce the friction coefficient of the film. In the case of the film corona treatment, migration is particularly strong, often in the film surface "blooming", due to the migration and Impact of haze film, so the actual production, to meet the technical specifications of the premise, as far as possible control its amount. Silicone lubricant is a non-migratory material, the outer lubrication is better, but at higher temperatures, outer lubricating effect (e.g., 80 ℃) good, more suitable for the packaging operation demand BOPP cigarette packaging film, so is widely used in the production of BOPP cigarette packaging film, because it is a non-migratory substances, it can only be used for the surface layer BOPP cigarette packaging film. 2.2.3 by just by just masterbatch masterbatch is a modified material, which consists of homopolymer polypropylene material and modification by just mixing together by a certain percentage. Currently materials by just two categories: 1) from natural pine oil, sesame oil and orange terpenes synthetic polymer compound; 2) a hydrocarbon polymer. By just masterbatches can significantly alter the performance of polypropylene homopolymer, giving some excellent properties that are not pure polypropylene film

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