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qizhen0809
Legenda soseske
Pridružen/-a: 10.01. 2017, 10:56
Prispevkov: 621
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 Objavljeno: 29 Mar 2018 10:47 Naslov sporočila: the plastic |
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| <p>How to reduce the plastic odor becomes a new difficulty for the plastics industry Plastics are an important raw material in the packaging industry. Plastics processing products emit unpleasant odors. In order to overcome this problem, plastic resin processors have long been working to reduce the emission levels of these odors. The solution is to replace those unpleasant screwing tougue and groove additives with low odor substitutes; to reduce the amount of residual monomers in plastics; to add gas sorbents to plastics and add antibacterial agents to prevent the production of bacteria and fungi. Smells; there is also the ability to reduce the residual odor by solvent extraction and venting during the recycling of plastics. </p> <p> Many compounds in plastics have unpleasant office ceiling tiles odors, including amines, benzene, aldehydes, ketones, and some plasticizers and flame retardants. Solvents used in plastic processing also release a strong chemical odor. To reduce the plastic odor can take the following measures: Change additives The tertiary amines used in the production of polyurethane foams often give off strong odors. The solution to the problem is to find alternatives to these amines.</p> <p> One of the measures is mdf veneer panels the use of polyhydroxy compounds, which not only have a component of the polyurethane molecular chain but also have catalytic activity as well. Some polyols can even replace half of the tertiary amine catalysts, and the odor emitted from the resulting product is much weaker. Phenolic stabilizers used in PVC extrusion or calendering processes are also often replaced by low-odor zinc stabilizers. Plant extract oils such as erucic acid and oleic how to attach a pergola to a deck acid have much less odor than amine lubricants made from animal extract oils (used in polyolefin and styrenic food packaging materials).</p> |
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