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完整版 how to identification plastic raw materials - identification method
Date: 2019-11-18 10:03
Views: 2471
Source: Internet
| in using/adopting how to identification plastics raw materials various plastics recycled methods for waste plastics again utilizing front, large more need will plastics separation 拣. due to plastics 消费渠道 more complex, has rear plastics also difficult through appearance simple will its separation, therefore, most good can in plastics products upper 标明材 material product types. China USA plastics 协会（SPE）提出并实施 材 material product types made GB/T16288—1996“ plastics packaging products recycling 标志”, can utilizing upper 述标记 methods 以方便 separation 拣, due to China has many 无标记 plastics products, to separation belt/tape difficult, is will different product types plastics separation 别, classification recycling, need identification different plastics Knowledge, lower introduction plastics easy identification method: | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1． plastics appearance identification through plastics appearance, can identification plastics products large type: thermoplastic property plastics hot solid property plastics or elastomer. generally thermoplastic property plastics has crystallization and 无定形两 type. crystallization property plastics appearance semi transparent, 乳浊状 or transparent, has in film 状态呈 transparent 状, hardness from soft/flexible to 角质. 无定形 generally is color, in add additives is full transparent, hardness from hard 于角质橡胶状（此时常 add has increase agent and other additives ）. hot solid property plastics usually has 填且不透 material 明, 如不含 filler is transparent. elastomer tool 橡胶状手感, has tensile rate. |
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| 2． plastics add hot identification upper type plastics add hot 特征也 is same, through add hot methods can identification. thermoplastic property plastics add hot soft 化, easy melt, melt transparent, can from melt filament, usually easy hot combined. hot solid property plastics add hot material chemical separation understanding front, maintain its has hardness soft 化, dimensions relatively stability, separation understanding temperature degree 炭化. elastomer add hot 时, to chemical separation understanding temperature degree front, 不发生 flow, separation understanding temperature degree material separation understanding 炭化. commonly used thermoplastic property plastics soft or melt temperature degree scope/range table/sheet
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| 3． plastics solvent agent identification thermoplastic property plastics in solvent agent in 会发生 solvent 胀, generally solvent cold solvent agent, in hot solvent agent in, has thermoplastic property plastics 会发生 solvent understanding, polyethylene (PE) solvent 于二甲苯 in, hot solid property plastics in solvent agent in solvent, generally 也不发生 solvent or light micro solvent 胀, elastomer solvent solvent agent, usually 会发生 solvent 胀.
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