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Change the life of the plastic
by：CSSSLD
2021-01-23
Aging said is plastics in injection molding of plastic processing and use process, affected by external environment factors.
These factors cause the destruction of the chemical structure, make the macromolecular chain rupture, molecular weight decreased, the original performance failure, thus lost the use value.
Many of the cause of plastic ageing, the plastic aging process is very complex, in addition to macromolecular free radical chain reaction, the chemical reaction could happen such as hydrolysis reaction.
change plastic life includes two aspects: one is the service life of plastic processing products for a long time, namely, prolong its service life, on the other hand the service life of the plastic products in complete rapid degradation, not pollute the environment, namely shorten its service life. Commonly used plastic ageing test indexes of weightlessness, tensile strength and elongation at break decreased. Test methods can be divided into natural atmospheric exposure to paint test method and the laboratory light exposure test method two kinds. Aging resistance of different varieties of polymer is different, this is mainly related to its aging structure. Bonds can be different, and its aging resistance, the lower the bond energy and aging resistance.
branch structure, the existence of branching in the polymer structure, can reduce the chemical bonds, which affects its aging resistance. General thermal oxidation of polymer increases with the increase of branched chain. Some functional groups in the polymer molecules exist influence its aging resistance. For the same active hydrogen in the polymer, the surrounding space steric hindrance, the greater the aging resistance, the better. Varieties of the same polymer in different aging resistance in different environmental media. According to different characteristics of different aging in the polymer, corresponding to different types of JiangXieJi proof, this is anti-aging formula.
add to increase the life of the plastic parts add anti-aging additives in plastics, to suppress or delay the ageing of the plastic reaction process. Antioxidant to inhibit or delay the polymer automatic oxidation reaction of small molecule organic compound, also known as protective agent in the rubber. Plastic adding antioxidants can be divided into living antioxidants and auxiliary antioxidants, its antioxidation mechanism is different.
anti aging mechanism of the primary antioxidants to capture and remove automatic reactive oxygen free radicals generated by the oxidation reaction, make its converted to hydrogen peroxide, so as to achieve the aim of automatic block oxidation reaction. Free radical scavenger, such antioxidants can react with reactive free radicals, formed no longer trigger automatically oxidation stable material.
auxiliary antioxidant anti aging mechanism, the main antioxidant function, to generate hydrogen peroxide to heat and light, and so on is extremely sensitive, it is easy to occur homolysis, generates free radicals to trigger automatic oxidation reaction. Auxiliary antioxidant agent is also known as hydrogen peroxide decomposition, it can make hydrogen peroxide into a stable substance. Auxiliary antioxidants alone to join without antioxidant effect, only to join together with the main antioxidant, just can have antioxidant effect.
hindered amine antioxidants oxygen resistance is very good, but because of the pollution in the use of easy discoloration and plastic products. Auxiliary antioxidant and the main antioxidant used together, can increase the main antioxidant antioxidant effect, and can also reduce the usage of antioxidants.
more wonderful sharing: plastic additives, crosslinking change heat resistance, click directly.
or copy the link: http://www. csssld。 cn//html/2016/Info_0613/260。 HTML
nantong on plastic products factory's official website: http://www. csssld。 cn//
change plastic life includes two aspects: one is the service life of plastic processing products for a long time, namely, prolong its service life, on the other hand the service life of the plastic products in complete rapid degradation, not pollute the environment, namely shorten its service life. Commonly used plastic ageing test indexes of weightlessness, tensile strength and elongation at break decreased. Test methods can be divided into natural atmospheric exposure to paint test method and the laboratory light exposure test method two kinds. Aging resistance of different varieties of polymer is different, this is mainly related to its aging structure. Bonds can be different, and its aging resistance, the lower the bond energy and aging resistance.
branch structure, the existence of branching in the polymer structure, can reduce the chemical bonds, which affects its aging resistance. General thermal oxidation of polymer increases with the increase of branched chain. Some functional groups in the polymer molecules exist influence its aging resistance. For the same active hydrogen in the polymer, the surrounding space steric hindrance, the greater the aging resistance, the better. Varieties of the same polymer in different aging resistance in different environmental media. According to different characteristics of different aging in the polymer, corresponding to different types of JiangXieJi proof, this is anti-aging formula.
add to increase the life of the plastic parts add anti-aging additives in plastics, to suppress or delay the ageing of the plastic reaction process. Antioxidant to inhibit or delay the polymer automatic oxidation reaction of small molecule organic compound, also known as protective agent in the rubber. Plastic adding antioxidants can be divided into living antioxidants and auxiliary antioxidants, its antioxidation mechanism is different.
anti aging mechanism of the primary antioxidants to capture and remove automatic reactive oxygen free radicals generated by the oxidation reaction, make its converted to hydrogen peroxide, so as to achieve the aim of automatic block oxidation reaction. Free radical scavenger, such antioxidants can react with reactive free radicals, formed no longer trigger automatically oxidation stable material.
auxiliary antioxidant anti aging mechanism, the main antioxidant function, to generate hydrogen peroxide to heat and light, and so on is extremely sensitive, it is easy to occur homolysis, generates free radicals to trigger automatic oxidation reaction. Auxiliary antioxidant agent is also known as hydrogen peroxide decomposition, it can make hydrogen peroxide into a stable substance. Auxiliary antioxidants alone to join without antioxidant effect, only to join together with the main antioxidant, just can have antioxidant effect.
hindered amine antioxidants oxygen resistance is very good, but because of the pollution in the use of easy discoloration and plastic products. Auxiliary antioxidant and the main antioxidant used together, can increase the main antioxidant antioxidant effect, and can also reduce the usage of antioxidants.
more wonderful sharing: plastic additives, crosslinking change heat resistance, click directly.
or copy the link: http://www. csssld。 cn//html/2016/Info_0613/260。 HTML
nantong on plastic products factory's official website: http://www. csssld。 cn//
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