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Polypropylene has a distinctive IR spectrum and possesses characteristic thermal properties. It has a density between 0.880 and 0.913 g per cm3. The permeation properties of molded polypropylene ...
182022.05
The thermogram of the specimen is similar to the thermogram of USP Low-Density Polyethylene RS, similarly determined, and...
132022.05
he thermogram of the specimen is similar to the thermogram of USP High-Density Polyethylene RS, similarly determined, and ...
112022.05
The moisture-proof function of packaging is mainly controlled in two aspects, one is to block the invasion of external water mole...
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