The hottest additives make plastic polymers even m

2022-08-05
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Additives make plastic polymers even more powerful

many plastic polymers will add additives in the production process, which can improve the formability or just change the pigmentation. Each substance contained in the material is part of the overall chemical composition. These substances must be carefully controlled. Different kinds of additives have different disadvantages and advantages. When added to polymers, the polymers have different properties, so that the polymers have greater practical value and meet the increasing market demand

formability "Market Research on plastic composite flexible packaging adhesives" 1 "China packaging industry" additives provide polymer impact resistance

polymers with difficult formability can be used as lubricants or processing aids, which can help materials stick to metal surfaces and reduce the amount of energy required to manufacture them. Some additives, such as acrylic polymers, can improve impact resistance. PVC materials, which can be used in molding or extrusion equipment, are often regarded as lubricants, as well as processing aids and additives. But these additives can contaminate other chemicals through solvents

more and more polymer materials have poured into the market, and various polymer products have emerged. Nowadays, polymer products include polymer films, polymer cells, polymer batteries, etc. In terms of characteristics, some polymers are transparent, some have good air tightness, and some have conductivity, semiconductivity, magnetism, etc. these excellent characteristics have been widely used in various industrial technology fields

improve the formability and stability of polymers

different polymers have their own characteristics. Some polymers, such as rubber, are elastic, while others, such as lignin or nitrocellulose, are relatively rigid and cannot be softened by exposure to non solvent materials. For this reason, plasticizing compounds can be added to polymers to "reduce their hardness and improve their formability. Plasticizers collect molecular groups between different polymer chains, but do not change the amount of polymer. This can limit the movement of the polymer chain less

plasticizers usually have a solubility level close to that of the polymer itself. As long as the polymer can be used compatibly, the sliding support is composed of the support and half of the steel column bearing, and multiple plasticizing additives can be in a single mixture. When the plasticizer phthalic acid is introduced into the polymer of polyvinyl chloride (PVC), its melt viscosity can be reduced and its photostability can be improved. The oxidation resistant acid it provides also makes the polymer more susceptible to fungal contamination and corrosion

change the color of polymer materials

in order to meet the market demand, today's polymers can have different colors by adding pigments. However, some pigments can increase the susceptibility of polymers to chemical reactions, so be careful when choosing pigments. Pigments, such as carbon black, do not react to form corrosive agents. Clay and other hydrophilic additives are water absorbent, which may damage some polymers. Similarly, carbonate pigments, such as limestone, can make materials susceptible to corrosion by inorganic acids. These effects can be mitigated by other means. In addition, adhesives such as organosilane, electrical and electronic industries help to make up for the deficiency between pigments and polymer molecules

UV stabilizers and antioxidants make polymers more stable

many unsaturated polymers can be absorbed from various sources, such as oxygen, resulting in the release and degradation of organic peroxides. In order to reduce the risk of deterioration of mechanical and chemical properties, phenolic or amine antioxidants can be added to these polymers, and some pigments and stabilizers are conducive to shielding ultraviolet light. Common additives with these effects are: hindered phenol: a benzene ring composed of phenol and hydroxyl. When it is replaced by hydrogen bonded by adjacent carbon atoms and heavier elements, it will be converted into hindered phenolic compounds, thus preventing oxidative degradation of rubber polymers

antioxidants: secondary amines, including aromatic hydrocarbons, such as benzene, can act as antioxidants in their compositions to protect polymers from oxidative deterioration. However, they also react with acids, making them vulnerable to acid corrosion

stabilizer: some organic polymers have photooxidation, which is caused by the deterioration of oxygen exposure under ultraviolet light. Pigments such as carbon black and UV stabilizers such as hydroxybenzophenone can be added to inhibit the rate of photooxidation

in the future, the market demand for polymers will increase, which requires the diversification of the properties of polymers, and various additives will also play a very important role in this development process, making the properties of polymers diverse and the application fields extensive

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